./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array15_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array15_pattern.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 511c1484167d1d7d90ff27dae8a1569edd7c5a72fd917e4f05baeab770e0fcd4 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 16:58:15,019 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 16:58:15,092 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 16:58:15,098 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 16:58:15,101 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 16:58:15,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 16:58:15,125 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 16:58:15,126 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 16:58:15,127 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 16:58:15,128 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 16:58:15,128 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 16:58:15,128 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 16:58:15,129 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 16:58:15,131 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 16:58:15,131 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 16:58:15,132 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 16:58:15,132 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 16:58:15,132 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 16:58:15,133 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 16:58:15,133 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 16:58:15,136 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 16:58:15,137 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 16:58:15,137 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 16:58:15,137 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 16:58:15,138 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 16:58:15,138 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 16:58:15,138 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 16:58:15,138 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 16:58:15,139 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 16:58:15,139 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 16:58:15,139 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 16:58:15,139 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 16:58:15,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 16:58:15,140 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 16:58:15,140 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 16:58:15,140 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 16:58:15,141 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 16:58:15,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 16:58:15,141 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 16:58:15,143 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 16:58:15,143 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 16:58:15,143 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 16:58:15,144 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 511c1484167d1d7d90ff27dae8a1569edd7c5a72fd917e4f05baeab770e0fcd4 [2024-11-19 16:58:15,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 16:58:15,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 16:58:15,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 16:58:15,410 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 16:58:15,411 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 16:58:15,412 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array15_pattern.c [2024-11-19 16:58:16,805 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 16:58:16,999 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 16:58:17,000 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array15_pattern.c [2024-11-19 16:58:17,010 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4db90bca/f12d5cbba0254834bc776c07a0d976f9/FLAGdba38cbbe [2024-11-19 16:58:17,023 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4db90bca/f12d5cbba0254834bc776c07a0d976f9 [2024-11-19 16:58:17,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 16:58:17,026 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 16:58:17,028 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 16:58:17,028 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 16:58:17,033 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 16:58:17,034 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:58:17" (1/1) ... [2024-11-19 16:58:17,034 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@539914ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:17, skipping insertion in model container [2024-11-19 16:58:17,035 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:58:17" (1/1) ... [2024-11-19 16:58:17,055 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 16:58:17,229 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array15_pattern.c[1424,1437] [2024-11-19 16:58:17,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 16:58:17,260 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 16:58:17,269 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array15_pattern.c[1424,1437] [2024-11-19 16:58:17,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 16:58:17,293 INFO L204 MainTranslator]: Completed translation [2024-11-19 16:58:17,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:17 WrapperNode [2024-11-19 16:58:17,293 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 16:58:17,295 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 16:58:17,295 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 16:58:17,295 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 16:58:17,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:17" (1/1) ... [2024-11-19 16:58:17,308 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:17" (1/1) ... [2024-11-19 16:58:17,331 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 98 [2024-11-19 16:58:17,331 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 16:58:17,332 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 16:58:17,335 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 16:58:17,336 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 16:58:17,345 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:17" (1/1) ... [2024-11-19 16:58:17,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:17" (1/1) ... [2024-11-19 16:58:17,348 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:17" (1/1) ... [2024-11-19 16:58:17,358 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-19 16:58:17,359 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:17" (1/1) ... [2024-11-19 16:58:17,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:17" (1/1) ... [2024-11-19 16:58:17,364 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:17" (1/1) ... [2024-11-19 16:58:17,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:17" (1/1) ... [2024-11-19 16:58:17,369 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:17" (1/1) ... [2024-11-19 16:58:17,370 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:17" (1/1) ... [2024-11-19 16:58:17,372 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 16:58:17,372 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 16:58:17,373 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 16:58:17,373 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 16:58:17,374 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:17" (1/1) ... [2024-11-19 16:58:17,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 16:58:17,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:58:17,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 16:58:17,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 16:58:17,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 16:58:17,463 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 16:58:17,464 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 16:58:17,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 16:58:17,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 16:58:17,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 16:58:17,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 16:58:17,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 16:58:17,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 16:58:17,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 16:58:17,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 16:58:17,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 16:58:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 16:58:17,550 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 16:58:17,552 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 16:58:17,741 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-19 16:58:17,741 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 16:58:17,753 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 16:58:17,753 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-19 16:58:17,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:58:17 BoogieIcfgContainer [2024-11-19 16:58:17,754 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 16:58:17,757 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 16:58:17,757 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 16:58:17,761 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 16:58:17,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:58:17" (1/3) ... [2024-11-19 16:58:17,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56dccd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:58:17, skipping insertion in model container [2024-11-19 16:58:17,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:17" (2/3) ... [2024-11-19 16:58:17,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56dccd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:58:17, skipping insertion in model container [2024-11-19 16:58:17,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:58:17" (3/3) ... [2024-11-19 16:58:17,765 INFO L112 eAbstractionObserver]: Analyzing ICFG array15_pattern.c [2024-11-19 16:58:17,781 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 16:58:17,781 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 16:58:17,828 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 16:58:17,835 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;@60662590, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 16:58:17,837 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 16:58:17,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 27 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:58:17,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-19 16:58:17,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:58:17,849 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:58:17,850 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:58:17,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:58:17,856 INFO L85 PathProgramCache]: Analyzing trace with hash 179087049, now seen corresponding path program 1 times [2024-11-19 16:58:17,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:58:17,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86899080] [2024-11-19 16:58:17,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:58:17,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:58:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:18,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 16:58:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:18,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:58:18,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:58:18,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86899080] [2024-11-19 16:58:18,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86899080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:58:18,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 16:58:18,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 16:58:18,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28753562] [2024-11-19 16:58:18,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:58:18,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 16:58:18,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:58:18,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 16:58:18,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 16:58:18,071 INFO L87 Difference]: Start difference. First operand has 32 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 27 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 16:58:18,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:58:18,087 INFO L93 Difference]: Finished difference Result 61 states and 93 transitions. [2024-11-19 16:58:18,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 16:58:18,090 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-19 16:58:18,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:58:18,096 INFO L225 Difference]: With dead ends: 61 [2024-11-19 16:58:18,096 INFO L226 Difference]: Without dead ends: 28 [2024-11-19 16:58:18,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 16:58:18,102 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:58:18,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:58:18,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-19 16:58:18,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-19 16:58:18,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:58:18,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2024-11-19 16:58:18,136 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 15 [2024-11-19 16:58:18,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:58:18,137 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2024-11-19 16:58:18,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 16:58:18,138 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-11-19 16:58:18,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 16:58:18,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:58:18,140 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:58:18,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 16:58:18,141 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:58:18,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:58:18,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1195633489, now seen corresponding path program 1 times [2024-11-19 16:58:18,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:58:18,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982371954] [2024-11-19 16:58:18,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:58:18,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:58:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:18,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 16:58:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:18,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 16:58:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:18,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 16:58:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:18,484 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 16:58:18,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:58:18,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982371954] [2024-11-19 16:58:18,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982371954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:58:18,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503474643] [2024-11-19 16:58:18,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:58:18,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:58:18,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:58:18,489 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:58:18,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 16:58:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:18,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 16:58:18,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:58:18,706 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 16:58:18,707 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 16:58:18,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503474643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:58:18,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 16:58:18,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-19 16:58:18,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668201278] [2024-11-19 16:58:18,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:58:18,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 16:58:18,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:58:18,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 16:58:18,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-19 16:58:18,711 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 16:58:18,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:58:18,820 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2024-11-19 16:58:18,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 16:58:18,821 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2024-11-19 16:58:18,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:58:18,822 INFO L225 Difference]: With dead ends: 66 [2024-11-19 16:58:18,823 INFO L226 Difference]: Without dead ends: 40 [2024-11-19 16:58:18,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-19 16:58:18,824 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:58:18,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 85 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:58:18,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-19 16:58:18,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 29. [2024-11-19 16:58:18,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:58:18,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-11-19 16:58:18,832 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 29 [2024-11-19 16:58:18,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:58:18,835 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-11-19 16:58:18,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 16:58:18,836 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-19 16:58:18,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-19 16:58:18,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:58:18,837 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:58:18,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 16:58:19,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:58:19,039 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:58:19,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:58:19,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1481418797, now seen corresponding path program 1 times [2024-11-19 16:58:19,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:58:19,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241092946] [2024-11-19 16:58:19,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:58:19,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:58:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:19,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 16:58:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:19,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 16:58:19,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:19,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-19 16:58:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:19,173 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 16:58:19,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:58:19,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241092946] [2024-11-19 16:58:19,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241092946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:58:19,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 16:58:19,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 16:58:19,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233052019] [2024-11-19 16:58:19,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:58:19,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 16:58:19,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:58:19,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 16:58:19,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 16:58:19,179 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 16:58:19,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:58:19,234 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2024-11-19 16:58:19,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 16:58:19,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2024-11-19 16:58:19,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:58:19,235 INFO L225 Difference]: With dead ends: 64 [2024-11-19 16:58:19,235 INFO L226 Difference]: Without dead ends: 40 [2024-11-19 16:58:19,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 16:58:19,237 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 13 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:58:19,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 50 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:58:19,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-19 16:58:19,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2024-11-19 16:58:19,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:58:19,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2024-11-19 16:58:19,250 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 32 [2024-11-19 16:58:19,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:58:19,251 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2024-11-19 16:58:19,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 16:58:19,251 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2024-11-19 16:58:19,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-19 16:58:19,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:58:19,252 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:58:19,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 16:58:19,252 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:58:19,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:58:19,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1699065963, now seen corresponding path program 1 times [2024-11-19 16:58:19,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:58:19,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139999428] [2024-11-19 16:58:19,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:58:19,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:58:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:19,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 16:58:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:19,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 16:58:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:19,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 16:58:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:19,533 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-19 16:58:19,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:58:19,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139999428] [2024-11-19 16:58:19,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139999428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:58:19,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289893501] [2024-11-19 16:58:19,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:58:19,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:58:19,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:58:19,537 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:58:19,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 16:58:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:19,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 16:58:19,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:58:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 16:58:19,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:58:19,750 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-19 16:58:19,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289893501] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:58:19,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:58:19,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2024-11-19 16:58:19,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331332868] [2024-11-19 16:58:19,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:58:19,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 16:58:19,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:58:19,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 16:58:19,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-19 16:58:19,753 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-19 16:58:19,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:58:19,928 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2024-11-19 16:58:19,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 16:58:19,929 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 34 [2024-11-19 16:58:19,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:58:19,930 INFO L225 Difference]: With dead ends: 46 [2024-11-19 16:58:19,931 INFO L226 Difference]: Without dead ends: 42 [2024-11-19 16:58:19,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-19 16:58:19,932 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 44 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:58:19,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 117 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:58:19,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-19 16:58:19,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2024-11-19 16:58:19,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:58:19,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-11-19 16:58:19,945 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 34 [2024-11-19 16:58:19,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:58:19,946 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-11-19 16:58:19,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-19 16:58:19,947 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-11-19 16:58:19,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-19 16:58:19,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:58:19,947 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:58:19,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 16:58:20,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-19 16:58:20,148 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:58:20,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:58:20,149 INFO L85 PathProgramCache]: Analyzing trace with hash -459431893, now seen corresponding path program 1 times [2024-11-19 16:58:20,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:58:20,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321393341] [2024-11-19 16:58:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:58:20,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:58:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:20,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 16:58:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:20,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 16:58:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:20,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 16:58:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:20,453 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 16:58:20,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:58:20,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321393341] [2024-11-19 16:58:20,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321393341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:58:20,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15816078] [2024-11-19 16:58:20,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:58:20,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:58:20,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:58:20,458 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:58:20,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 16:58:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:20,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 16:58:20,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:58:20,734 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 16:58:20,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:58:21,102 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 16:58:21,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15816078] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:58:21,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:58:21,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 12] total 25 [2024-11-19 16:58:21,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129434065] [2024-11-19 16:58:21,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:58:21,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 16:58:21,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:58:21,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 16:58:21,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2024-11-19 16:58:21,108 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 25 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 18 states have internal predecessors, (48), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-19 16:58:21,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:58:21,964 INFO L93 Difference]: Finished difference Result 165 states and 207 transitions. [2024-11-19 16:58:21,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-19 16:58:21,965 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 18 states have internal predecessors, (48), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) Word has length 39 [2024-11-19 16:58:21,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:58:21,968 INFO L225 Difference]: With dead ends: 165 [2024-11-19 16:58:21,970 INFO L226 Difference]: Without dead ends: 139 [2024-11-19 16:58:21,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=360, Invalid=1532, Unknown=0, NotChecked=0, Total=1892 [2024-11-19 16:58:21,973 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 182 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 16:58:21,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 342 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 16:58:21,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-19 16:58:21,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 77. [2024-11-19 16:58:21,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 67 states have internal predecessors, (85), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 16:58:21,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 97 transitions. [2024-11-19 16:58:21,997 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 97 transitions. Word has length 39 [2024-11-19 16:58:21,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:58:21,998 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 97 transitions. [2024-11-19 16:58:21,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 18 states have internal predecessors, (48), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-19 16:58:21,998 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 97 transitions. [2024-11-19 16:58:21,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-19 16:58:22,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:58:22,000 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:58:22,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 16:58:22,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:58:22,202 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:58:22,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:58:22,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1046237907, now seen corresponding path program 1 times [2024-11-19 16:58:22,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:58:22,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232750687] [2024-11-19 16:58:22,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:58:22,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:58:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 16:58:22,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1652095091] [2024-11-19 16:58:22,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:58:22,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:58:22,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:58:22,227 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:58:22,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 16:58:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:22,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-19 16:58:22,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:58:22,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 16:58:22,812 INFO L349 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2024-11-19 16:58:22,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 18 [2024-11-19 16:58:22,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 16:58:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 16:58:22,986 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:58:23,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:58:23,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232750687] [2024-11-19 16:58:23,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 16:58:23,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652095091] [2024-11-19 16:58:23,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652095091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:58:23,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 16:58:23,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2024-11-19 16:58:23,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365519075] [2024-11-19 16:58:23,456 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 16:58:23,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 16:58:23,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:58:23,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 16:58:23,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=755, Unknown=0, NotChecked=0, Total=930 [2024-11-19 16:58:23,458 INFO L87 Difference]: Start difference. First operand 77 states and 97 transitions. Second operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 18 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:58:23,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:58:23,968 INFO L93 Difference]: Finished difference Result 172 states and 215 transitions. [2024-11-19 16:58:23,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-19 16:58:23,969 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 18 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2024-11-19 16:58:23,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:58:23,971 INFO L225 Difference]: With dead ends: 172 [2024-11-19 16:58:23,971 INFO L226 Difference]: Without dead ends: 134 [2024-11-19 16:58:23,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=259, Invalid=1223, Unknown=0, NotChecked=0, Total=1482 [2024-11-19 16:58:23,973 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 80 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 16:58:23,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 137 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 16:58:23,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-19 16:58:24,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 109. [2024-11-19 16:58:24,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 93 states have (on average 1.2688172043010753) internal successors, (118), 95 states have internal predecessors, (118), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 16:58:24,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 136 transitions. [2024-11-19 16:58:24,016 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 136 transitions. Word has length 39 [2024-11-19 16:58:24,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:58:24,017 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 136 transitions. [2024-11-19 16:58:24,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 18 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:58:24,017 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 136 transitions. [2024-11-19 16:58:24,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-19 16:58:24,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:58:24,019 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:58:24,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 16:58:24,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:58:24,224 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:58:24,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:58:24,224 INFO L85 PathProgramCache]: Analyzing trace with hash -252023569, now seen corresponding path program 2 times [2024-11-19 16:58:24,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:58:24,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364680141] [2024-11-19 16:58:24,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:58:24,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:58:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:24,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 16:58:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:24,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 16:58:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:24,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 16:58:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:24,325 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 16:58:24,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:58:24,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364680141] [2024-11-19 16:58:24,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364680141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:58:24,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35591634] [2024-11-19 16:58:24,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 16:58:24,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:58:24,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:58:24,329 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:58:24,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 16:58:24,389 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 16:58:24,389 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:58:24,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 16:58:24,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:58:24,462 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 16:58:24,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:58:24,516 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 16:58:24,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35591634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:58:24,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:58:24,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-19 16:58:24,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217987292] [2024-11-19 16:58:24,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:58:24,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 16:58:24,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:58:24,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 16:58:24,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-19 16:58:24,519 INFO L87 Difference]: Start difference. First operand 109 states and 136 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 16:58:24,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:58:24,636 INFO L93 Difference]: Finished difference Result 164 states and 200 transitions. [2024-11-19 16:58:24,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 16:58:24,636 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2024-11-19 16:58:24,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:58:24,637 INFO L225 Difference]: With dead ends: 164 [2024-11-19 16:58:24,638 INFO L226 Difference]: Without dead ends: 115 [2024-11-19 16:58:24,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-19 16:58:24,639 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:58:24,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 111 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:58:24,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-19 16:58:24,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 109. [2024-11-19 16:58:24,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 93 states have (on average 1.2258064516129032) internal successors, (114), 95 states have internal predecessors, (114), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 16:58:24,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2024-11-19 16:58:24,665 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 132 transitions. Word has length 41 [2024-11-19 16:58:24,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:58:24,666 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 132 transitions. [2024-11-19 16:58:24,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 16:58:24,666 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 132 transitions. [2024-11-19 16:58:24,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-19 16:58:24,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:58:24,667 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:58:24,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 16:58:24,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:58:24,868 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:58:24,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:58:24,869 INFO L85 PathProgramCache]: Analyzing trace with hash 796161581, now seen corresponding path program 2 times [2024-11-19 16:58:24,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:58:24,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375613135] [2024-11-19 16:58:24,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:58:24,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:58:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:24,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 16:58:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:24,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-19 16:58:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:24,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-19 16:58:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:24,981 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 16:58:24,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:58:24,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375613135] [2024-11-19 16:58:24,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375613135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:58:24,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59805599] [2024-11-19 16:58:24,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 16:58:24,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:58:24,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:58:24,984 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:58:24,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 16:58:25,043 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 16:58:25,043 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:58:25,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 16:58:25,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:58:25,100 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 16:58:25,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:58:25,150 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 16:58:25,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59805599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:58:25,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:58:25,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-19 16:58:25,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982799078] [2024-11-19 16:58:25,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:58:25,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 16:58:25,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:58:25,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 16:58:25,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-19 16:58:25,153 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 16:58:25,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:58:25,318 INFO L93 Difference]: Finished difference Result 172 states and 215 transitions. [2024-11-19 16:58:25,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 16:58:25,319 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2024-11-19 16:58:25,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:58:25,320 INFO L225 Difference]: With dead ends: 172 [2024-11-19 16:58:25,320 INFO L226 Difference]: Without dead ends: 139 [2024-11-19 16:58:25,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2024-11-19 16:58:25,321 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 34 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:58:25,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 151 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:58:25,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-19 16:58:25,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 119. [2024-11-19 16:58:25,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 103 states have (on average 1.233009708737864) internal successors, (127), 105 states have internal predecessors, (127), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 16:58:25,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 145 transitions. [2024-11-19 16:58:25,342 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 145 transitions. Word has length 41 [2024-11-19 16:58:25,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:58:25,342 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 145 transitions. [2024-11-19 16:58:25,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 16:58:25,343 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 145 transitions. [2024-11-19 16:58:25,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-19 16:58:25,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:58:25,344 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:58:25,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 16:58:25,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:58:25,545 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:58:25,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:58:25,545 INFO L85 PathProgramCache]: Analyzing trace with hash 178867369, now seen corresponding path program 3 times [2024-11-19 16:58:25,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:58:25,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593867176] [2024-11-19 16:58:25,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:58:25,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:58:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:25,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 16:58:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:25,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 16:58:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:25,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 16:58:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:25,642 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 16:58:25,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:58:25,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593867176] [2024-11-19 16:58:25,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593867176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:58:25,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117216349] [2024-11-19 16:58:25,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 16:58:25,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:58:25,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:58:25,646 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:58:25,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 16:58:25,726 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-19 16:58:25,727 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:58:25,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 16:58:25,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:58:25,779 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 16:58:25,780 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:58:25,836 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 16:58:25,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117216349] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:58:25,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:58:25,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2024-11-19 16:58:25,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407923981] [2024-11-19 16:58:25,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:58:25,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 16:58:25,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:58:25,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 16:58:25,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-19 16:58:25,841 INFO L87 Difference]: Start difference. First operand 119 states and 145 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 16:58:26,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:58:26,099 INFO L93 Difference]: Finished difference Result 167 states and 196 transitions. [2024-11-19 16:58:26,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 16:58:26,099 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2024-11-19 16:58:26,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:58:26,100 INFO L225 Difference]: With dead ends: 167 [2024-11-19 16:58:26,101 INFO L226 Difference]: Without dead ends: 99 [2024-11-19 16:58:26,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 95 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2024-11-19 16:58:26,102 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 49 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:58:26,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 111 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:58:26,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-19 16:58:26,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2024-11-19 16:58:26,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 76 states have (on average 1.144736842105263) internal successors, (87), 76 states have internal predecessors, (87), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 16:58:26,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2024-11-19 16:58:26,112 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 44 [2024-11-19 16:58:26,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:58:26,112 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2024-11-19 16:58:26,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 16:58:26,112 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2024-11-19 16:58:26,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-19 16:58:26,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:58:26,113 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:58:26,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 16:58:26,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:58:26,314 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:58:26,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:58:26,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1693722629, now seen corresponding path program 3 times [2024-11-19 16:58:26,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:58:26,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725189672] [2024-11-19 16:58:26,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:58:26,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:58:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:26,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 16:58:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:26,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 16:58:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:26,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-19 16:58:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:26,401 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-19 16:58:26,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:58:26,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725189672] [2024-11-19 16:58:26,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725189672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:58:26,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700965426] [2024-11-19 16:58:26,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 16:58:26,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:58:26,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:58:26,404 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:58:26,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 16:58:26,462 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 16:58:26,462 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:58:26,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 16:58:26,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:58:26,644 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-19 16:58:26,645 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:58:26,974 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-19 16:58:26,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700965426] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:58:26,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:58:26,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 12] total 26 [2024-11-19 16:58:26,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726639761] [2024-11-19 16:58:26,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:58:26,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 16:58:26,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:58:26,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 16:58:26,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2024-11-19 16:58:26,977 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand has 26 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 21 states have internal predecessors, (68), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-19 16:58:27,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:58:27,551 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2024-11-19 16:58:27,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-19 16:58:27,552 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 21 states have internal predecessors, (68), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 48 [2024-11-19 16:58:27,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:58:27,553 INFO L225 Difference]: With dead ends: 105 [2024-11-19 16:58:27,553 INFO L226 Difference]: Without dead ends: 99 [2024-11-19 16:58:27,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=443, Invalid=1719, Unknown=0, NotChecked=0, Total=2162 [2024-11-19 16:58:27,554 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 173 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 16:58:27,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 170 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 16:58:27,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-19 16:58:27,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2024-11-19 16:58:27,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 76 states have (on average 1.131578947368421) internal successors, (86), 76 states have internal predecessors, (86), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 16:58:27,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2024-11-19 16:58:27,564 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 48 [2024-11-19 16:58:27,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:58:27,565 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2024-11-19 16:58:27,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 21 states have internal predecessors, (68), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-19 16:58:27,565 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2024-11-19 16:58:27,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-19 16:58:27,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:58:27,566 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:58:27,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 16:58:27,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-19 16:58:27,771 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:58:27,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:58:27,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2069820594, now seen corresponding path program 1 times [2024-11-19 16:58:27,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:58:27,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836247237] [2024-11-19 16:58:27,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:58:27,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:58:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 16:58:27,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [871306201] [2024-11-19 16:58:27,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:58:27,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:58:27,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:58:27,795 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:58:27,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 16:58:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:58:27,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-19 16:58:27,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:58:27,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 16:58:28,138 INFO L349 Elim1Store]: treesize reduction 28, result has 50.0 percent of original size [2024-11-19 16:58:28,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 46 [2024-11-19 16:58:28,446 INFO L349 Elim1Store]: treesize reduction 90, result has 19.6 percent of original size [2024-11-19 16:58:28,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 58 treesize of output 44 [2024-11-19 16:58:28,571 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 16:58:28,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 14 [2024-11-19 16:58:28,621 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 16:58:28,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:58:37,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:58:37,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836247237] [2024-11-19 16:58:37,307 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 16:58:37,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871306201] [2024-11-19 16:58:37,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871306201] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:58:37,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 16:58:37,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2024-11-19 16:58:37,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134744990] [2024-11-19 16:58:37,307 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 16:58:37,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 16:58:37,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:58:37,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 16:58:37,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=438, Unknown=2, NotChecked=0, Total=552 [2024-11-19 16:58:37,308 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-19 16:58:37,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:58:37,736 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2024-11-19 16:58:37,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 16:58:37,736 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 54 [2024-11-19 16:58:37,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:58:37,737 INFO L225 Difference]: With dead ends: 125 [2024-11-19 16:58:37,737 INFO L226 Difference]: Without dead ends: 86 [2024-11-19 16:58:37,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 52 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=187, Invalid=803, Unknown=2, NotChecked=0, Total=992 [2024-11-19 16:58:37,738 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 78 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 16:58:37,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 167 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 16:58:37,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-19 16:58:37,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 54. [2024-11-19 16:58:37,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:58:37,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2024-11-19 16:58:37,745 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 54 [2024-11-19 16:58:37,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:58:37,746 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2024-11-19 16:58:37,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-19 16:58:37,746 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2024-11-19 16:58:37,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-19 16:58:37,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:58:37,747 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:58:37,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 16:58:37,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:58:37,951 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:58:37,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:58:37,951 INFO L85 PathProgramCache]: Analyzing trace with hash 11450257, now seen corresponding path program 4 times [2024-11-19 16:58:37,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:58:37,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981183201] [2024-11-19 16:58:37,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:58:37,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:58:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 16:58:37,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697010513] [2024-11-19 16:58:37,978 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 16:58:37,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:58:37,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:58:37,981 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:58:37,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 16:58:38,186 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 16:58:38,186 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:58:38,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-19 16:58:38,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:58:38,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 16:58:38,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-19 16:58:38,560 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 16:58:38,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-19 16:58:38,675 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 16:58:38,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-19 16:58:39,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 16:58:39,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 16:58:39,529 INFO L349 Elim1Store]: treesize reduction 120, result has 30.6 percent of original size [2024-11-19 16:58:39,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 8 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 74 treesize of output 118 [2024-11-19 16:58:40,653 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 16:58:40,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 65 [2024-11-19 16:58:40,809 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 16:58:40,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:58:42,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:58:42,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981183201] [2024-11-19 16:58:42,521 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 16:58:42,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697010513] [2024-11-19 16:58:42,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697010513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:58:42,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 16:58:42,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2024-11-19 16:58:42,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995444448] [2024-11-19 16:58:42,522 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 16:58:42,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-19 16:58:42,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:58:42,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-19 16:58:42,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=2631, Unknown=0, NotChecked=0, Total=2970 [2024-11-19 16:58:42,524 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 36 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 32 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:58:43,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:58:43,444 INFO L93 Difference]: Finished difference Result 122 states and 146 transitions. [2024-11-19 16:58:43,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-19 16:58:43,445 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 32 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2024-11-19 16:58:43,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:58:43,446 INFO L225 Difference]: With dead ends: 122 [2024-11-19 16:58:43,446 INFO L226 Difference]: Without dead ends: 118 [2024-11-19 16:58:43,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1340 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=412, Invalid=3248, Unknown=0, NotChecked=0, Total=3660 [2024-11-19 16:58:43,447 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 63 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 16:58:43,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 139 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 16:58:43,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-19 16:58:43,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 90. [2024-11-19 16:58:43,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 81 states have (on average 1.1851851851851851) internal successors, (96), 81 states have internal predecessors, (96), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 16:58:43,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 106 transitions. [2024-11-19 16:58:43,460 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 106 transitions. Word has length 57 [2024-11-19 16:58:43,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:58:43,460 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 106 transitions. [2024-11-19 16:58:43,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 32 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 16:58:43,460 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 106 transitions. [2024-11-19 16:58:43,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-19 16:58:43,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:58:43,461 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:58:43,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 16:58:43,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-19 16:58:43,662 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:58:43,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:58:43,662 INFO L85 PathProgramCache]: Analyzing trace with hash 230304975, now seen corresponding path program 4 times [2024-11-19 16:58:43,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:58:43,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537103601] [2024-11-19 16:58:43,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:58:43,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:58:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 16:58:43,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1288534627] [2024-11-19 16:58:43,682 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 16:58:43,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:58:43,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:58:43,685 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:58:43,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 16:58:43,826 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 16:58:43,827 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:58:43,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-19 16:58:43,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:58:43,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 16:58:43,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-19 16:58:44,116 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 16:58:44,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-19 16:58:44,200 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 16:58:44,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-19 16:58:44,625 INFO L349 Elim1Store]: treesize reduction 144, result has 16.8 percent of original size [2024-11-19 16:58:44,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 56 treesize of output 54 [2024-11-19 16:58:45,091 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 16:58:45,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:58:46,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 230 treesize of output 222 [2024-11-19 16:58:46,520 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 16:58:46,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1729478 treesize of output 1651688 [2024-11-19 16:58:52,803 WARN L286 SmtUtils]: Spent 6.28s on a formula simplification. DAG size of input: 359 DAG size of output: 378 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)