./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-tiling/mbpr4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/array-tiling/mbpr4.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 d3770c63a87ff983494c9353997301d9eb30588c650f83b67bcf55f325443055 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 20:45:31,687 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 20:45:31,745 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 20:45:31,750 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 20:45:31,751 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 20:45:31,775 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 20:45:31,775 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 20:45:31,776 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 20:45:31,776 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 20:45:31,779 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 20:45:31,779 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 20:45:31,780 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 20:45:31,780 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 20:45:31,780 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 20:45:31,780 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 20:45:31,781 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 20:45:31,781 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 20:45:31,781 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 20:45:31,781 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 20:45:31,781 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 20:45:31,781 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 20:45:31,783 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 20:45:31,784 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 20:45:31,784 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 20:45:31,784 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 20:45:31,784 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 20:45:31,784 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 20:45:31,785 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 20:45:31,785 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 20:45:31,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 20:45:31,786 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 20:45:31,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 20:45:31,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:45:31,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 20:45:31,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 20:45:31,787 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 20:45:31,787 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 20:45:31,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 20:45:31,788 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 20:45:31,788 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 20:45:31,788 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 20:45:31,789 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 20:45:31,789 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3770c63a87ff983494c9353997301d9eb30588c650f83b67bcf55f325443055 [2024-11-21 20:45:31,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 20:45:31,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 20:45:31,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 20:45:31,999 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 20:45:31,999 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 20:45:32,000 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/mbpr4.c [2024-11-21 20:45:33,225 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 20:45:33,357 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 20:45:33,358 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/mbpr4.c [2024-11-21 20:45:33,364 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bc767270/d65a98d59e254cbd9b117ccf4521ca5f/FLAG44c3e435b [2024-11-21 20:45:33,772 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bc767270/d65a98d59e254cbd9b117ccf4521ca5f [2024-11-21 20:45:33,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 20:45:33,775 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 20:45:33,776 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 20:45:33,776 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 20:45:33,781 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 20:45:33,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:45:33" (1/1) ... [2024-11-21 20:45:33,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69c421f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:33, skipping insertion in model container [2024-11-21 20:45:33,782 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:45:33" (1/1) ... [2024-11-21 20:45:33,804 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 20:45:33,963 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-tiling/mbpr4.c[396,409] [2024-11-21 20:45:33,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:45:33,997 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 20:45:34,008 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-tiling/mbpr4.c[396,409] [2024-11-21 20:45:34,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:45:34,035 INFO L204 MainTranslator]: Completed translation [2024-11-21 20:45:34,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:34 WrapperNode [2024-11-21 20:45:34,036 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 20:45:34,037 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 20:45:34,037 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 20:45:34,037 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 20:45:34,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:34" (1/1) ... [2024-11-21 20:45:34,049 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:34" (1/1) ... [2024-11-21 20:45:34,069 INFO L138 Inliner]: procedures = 15, calls = 54, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 146 [2024-11-21 20:45:34,069 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 20:45:34,070 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 20:45:34,070 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 20:45:34,070 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 20:45:34,078 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:34" (1/1) ... [2024-11-21 20:45:34,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:34" (1/1) ... [2024-11-21 20:45:34,081 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:34" (1/1) ... [2024-11-21 20:45:34,091 INFO L175 MemorySlicer]: Split 44 memory accesses to 3 slices as follows [2, 8, 34]. 77 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0]. The 20 writes are split as follows [0, 0, 20]. [2024-11-21 20:45:34,091 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:34" (1/1) ... [2024-11-21 20:45:34,092 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:34" (1/1) ... [2024-11-21 20:45:34,097 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:34" (1/1) ... [2024-11-21 20:45:34,100 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:34" (1/1) ... [2024-11-21 20:45:34,101 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:34" (1/1) ... [2024-11-21 20:45:34,102 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:34" (1/1) ... [2024-11-21 20:45:34,104 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 20:45:34,104 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 20:45:34,105 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 20:45:34,105 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 20:45:34,105 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:34" (1/1) ... [2024-11-21 20:45:34,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:45:34,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:45:34,133 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) [2024-11-21 20:45:34,135 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 [2024-11-21 20:45:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 20:45:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 20:45:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-21 20:45:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-21 20:45:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-21 20:45:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-21 20:45:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-21 20:45:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-21 20:45:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 20:45:34,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 20:45:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-21 20:45:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-21 20:45:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-21 20:45:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-21 20:45:34,257 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 20:45:34,259 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 20:45:34,496 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-21 20:45:34,496 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 20:45:34,510 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 20:45:34,510 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-21 20:45:34,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:45:34 BoogieIcfgContainer [2024-11-21 20:45:34,511 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 20:45:34,513 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 20:45:34,514 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 20:45:34,516 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 20:45:34,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:45:33" (1/3) ... [2024-11-21 20:45:34,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e0c0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:45:34, skipping insertion in model container [2024-11-21 20:45:34,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:34" (2/3) ... [2024-11-21 20:45:34,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e0c0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:45:34, skipping insertion in model container [2024-11-21 20:45:34,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:45:34" (3/3) ... [2024-11-21 20:45:34,521 INFO L112 eAbstractionObserver]: Analyzing ICFG mbpr4.c [2024-11-21 20:45:34,534 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 20:45:34,535 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 20:45:34,590 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 20:45:34,597 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;@5f71e47a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 20:45:34,597 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 20:45:34,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 38 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:34,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-21 20:45:34,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:45:34,606 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:45:34,607 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:45:34,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:45:34,611 INFO L85 PathProgramCache]: Analyzing trace with hash -912130766, now seen corresponding path program 1 times [2024-11-21 20:45:34,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:45:34,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369719849] [2024-11-21 20:45:34,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:45:34,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:45:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:45:34,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:45:34,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:45:34,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369719849] [2024-11-21 20:45:34,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369719849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:45:34,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:45:34,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 20:45:34,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61200842] [2024-11-21 20:45:34,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:45:34,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-21 20:45:34,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:45:34,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-21 20:45:34,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-21 20:45:34,778 INFO L87 Difference]: Start difference. First operand has 39 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 38 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:34,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:45:34,790 INFO L93 Difference]: Finished difference Result 73 states and 106 transitions. [2024-11-21 20:45:34,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-21 20:45:34,792 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-21 20:45:34,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:45:34,797 INFO L225 Difference]: With dead ends: 73 [2024-11-21 20:45:34,798 INFO L226 Difference]: Without dead ends: 34 [2024-11-21 20:45:34,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-21 20:45:34,802 INFO L432 NwaCegarLoop]: 50 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, 50 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 [2024-11-21 20:45:34,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:45:34,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-21 20:45:34,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-21 20:45:34,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.303030303030303) internal successors, (43), 33 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:34,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2024-11-21 20:45:34,836 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 19 [2024-11-21 20:45:34,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:45:34,836 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2024-11-21 20:45:34,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:34,837 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2024-11-21 20:45:34,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-21 20:45:34,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:45:34,839 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:45:34,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 20:45:34,839 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:45:34,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:45:34,840 INFO L85 PathProgramCache]: Analyzing trace with hash 560162573, now seen corresponding path program 1 times [2024-11-21 20:45:34,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:45:34,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479666555] [2024-11-21 20:45:34,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:45:34,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:45:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:45:35,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:45:35,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:45:35,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479666555] [2024-11-21 20:45:35,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479666555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:45:35,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:45:35,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 20:45:35,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907915481] [2024-11-21 20:45:35,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:45:35,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 20:45:35,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:45:35,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 20:45:35,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:45:35,070 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:35,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:45:35,093 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2024-11-21 20:45:35,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 20:45:35,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-21 20:45:35,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:45:35,094 INFO L225 Difference]: With dead ends: 38 [2024-11-21 20:45:35,094 INFO L226 Difference]: Without dead ends: 36 [2024-11-21 20:45:35,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:45:35,095 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:45:35,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:45:35,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-21 20:45:35,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-21 20:45:35,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 35 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:35,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2024-11-21 20:45:35,101 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 19 [2024-11-21 20:45:35,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:45:35,102 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2024-11-21 20:45:35,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:35,102 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2024-11-21 20:45:35,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-21 20:45:35,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:45:35,102 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:45:35,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-21 20:45:35,103 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:45:35,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:45:35,103 INFO L85 PathProgramCache]: Analyzing trace with hash 560222155, now seen corresponding path program 1 times [2024-11-21 20:45:35,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:45:35,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818519984] [2024-11-21 20:45:35,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:45:35,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:45:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:45:35,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:45:35,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:45:35,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818519984] [2024-11-21 20:45:35,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818519984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:45:35,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:45:35,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-21 20:45:35,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822466749] [2024-11-21 20:45:35,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:45:35,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-21 20:45:35,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:45:35,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-21 20:45:35,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:45:35,286 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:35,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:45:35,390 INFO L93 Difference]: Finished difference Result 78 states and 102 transitions. [2024-11-21 20:45:35,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-21 20:45:35,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-21 20:45:35,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:45:35,391 INFO L225 Difference]: With dead ends: 78 [2024-11-21 20:45:35,391 INFO L226 Difference]: Without dead ends: 52 [2024-11-21 20:45:35,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:45:35,392 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 54 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:45:35,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 24 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:45:35,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-21 20:45:35,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2024-11-21 20:45:35,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:35,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2024-11-21 20:45:35,402 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 19 [2024-11-21 20:45:35,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:45:35,402 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2024-11-21 20:45:35,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:35,403 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2024-11-21 20:45:35,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-21 20:45:35,403 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:45:35,403 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:45:35,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-21 20:45:35,404 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:45:35,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:45:35,404 INFO L85 PathProgramCache]: Analyzing trace with hash -846989385, now seen corresponding path program 1 times [2024-11-21 20:45:35,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:45:35,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574761882] [2024-11-21 20:45:35,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:45:35,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:45:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:45:35,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-21 20:45:35,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:45:35,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574761882] [2024-11-21 20:45:35,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574761882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:45:35,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:45:35,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 20:45:35,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161772141] [2024-11-21 20:45:35,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:45:35,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 20:45:35,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:45:35,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 20:45:35,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 20:45:35,528 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:35,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:45:35,550 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2024-11-21 20:45:35,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 20:45:35,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-21 20:45:35,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:45:35,551 INFO L225 Difference]: With dead ends: 55 [2024-11-21 20:45:35,551 INFO L226 Difference]: Without dead ends: 40 [2024-11-21 20:45:35,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 20:45:35,552 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 17 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:45:35,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 35 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:45:35,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-21 20:45:35,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-21 20:45:35,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:35,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2024-11-21 20:45:35,560 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 35 [2024-11-21 20:45:35,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:45:35,560 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2024-11-21 20:45:35,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:35,560 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2024-11-21 20:45:35,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-21 20:45:35,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:45:35,562 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:45:35,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-21 20:45:35,562 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:45:35,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:45:35,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1240016395, now seen corresponding path program 1 times [2024-11-21 20:45:35,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:45:35,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819688322] [2024-11-21 20:45:35,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:45:35,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:45:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:45:36,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:45:36,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:45:36,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819688322] [2024-11-21 20:45:36,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819688322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:45:36,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484358386] [2024-11-21 20:45:36,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:45:36,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:45:36,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:45:36,806 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) [2024-11-21 20:45:36,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 20:45:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:45:36,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-21 20:45:36,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:45:37,010 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 15 treesize of output 1 [2024-11-21 20:45:37,051 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:45:37,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 18 [2024-11-21 20:45:37,111 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 23 treesize of output 11 [2024-11-21 20:45:37,138 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:45:37,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 25 [2024-11-21 20:45:37,180 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 23 treesize of output 11 [2024-11-21 20:45:37,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 11 [2024-11-21 20:45:37,246 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 23 treesize of output 11 [2024-11-21 20:45:37,264 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:45:37,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 25 [2024-11-21 20:45:37,322 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 [2024-11-21 20:45:37,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:45:37,348 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:45:37,537 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 17 treesize of output 15 [2024-11-21 20:45:37,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 20 [2024-11-21 20:45:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-21 20:45:37,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484358386] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:45:37,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:45:37,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-21 20:45:37,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384153168] [2024-11-21 20:45:37,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:45:37,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-21 20:45:37,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:45:37,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-21 20:45:37,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-21 20:45:37,578 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:37,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:45:37,835 INFO L93 Difference]: Finished difference Result 103 states and 124 transitions. [2024-11-21 20:45:37,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-21 20:45:37,835 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-21 20:45:37,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:45:37,836 INFO L225 Difference]: With dead ends: 103 [2024-11-21 20:45:37,836 INFO L226 Difference]: Without dead ends: 70 [2024-11-21 20:45:37,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2024-11-21 20:45:37,837 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 220 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-21 20:45:37,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 86 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-21 20:45:37,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-21 20:45:37,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 42. [2024-11-21 20:45:37,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:37,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2024-11-21 20:45:37,847 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 35 [2024-11-21 20:45:37,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:45:37,847 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2024-11-21 20:45:37,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:37,847 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2024-11-21 20:45:37,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-21 20:45:37,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:45:37,848 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:45:37,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-21 20:45:38,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:45:38,050 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:45:38,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:45:38,051 INFO L85 PathProgramCache]: Analyzing trace with hash 505076392, now seen corresponding path program 1 times [2024-11-21 20:45:38,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:45:38,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661554454] [2024-11-21 20:45:38,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:45:38,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:45:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:45:38,709 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:45:38,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:45:38,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661554454] [2024-11-21 20:45:38,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661554454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:45:38,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251307157] [2024-11-21 20:45:38,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:45:38,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:45:38,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:45:38,712 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) [2024-11-21 20:45:38,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 20:45:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:45:38,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-21 20:45:38,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:45:38,872 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 15 treesize of output 1 [2024-11-21 20:45:38,904 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:45:38,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 32 [2024-11-21 20:45:38,958 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 23 treesize of output 11 [2024-11-21 20:45:38,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 11 [2024-11-21 20:45:39,008 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 23 treesize of output 11 [2024-11-21 20:45:39,022 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:45:39,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 25 [2024-11-21 20:45:39,120 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 [2024-11-21 20:45:39,138 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:45:39,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:45:39,288 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 19 treesize of output 17 [2024-11-21 20:45:39,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 24 treesize of output 20 [2024-11-21 20:45:39,327 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-21 20:45:39,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251307157] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:45:39,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:45:39,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-21 20:45:39,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488572812] [2024-11-21 20:45:39,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:45:39,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-21 20:45:39,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:45:39,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-21 20:45:39,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-21 20:45:39,335 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:39,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:45:39,637 INFO L93 Difference]: Finished difference Result 99 states and 117 transitions. [2024-11-21 20:45:39,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-21 20:45:39,637 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-21 20:45:39,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:45:39,638 INFO L225 Difference]: With dead ends: 99 [2024-11-21 20:45:39,638 INFO L226 Difference]: Without dead ends: 70 [2024-11-21 20:45:39,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 78 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2024-11-21 20:45:39,639 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 135 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-21 20:45:39,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 117 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-21 20:45:39,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-21 20:45:39,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 48. [2024-11-21 20:45:39,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:39,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2024-11-21 20:45:39,644 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 41 [2024-11-21 20:45:39,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:45:39,644 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2024-11-21 20:45:39,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:39,644 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2024-11-21 20:45:39,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-21 20:45:39,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:45:39,645 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:45:39,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-21 20:45:39,849 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,SelfDestructingSolverStorable5 [2024-11-21 20:45:39,850 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:45:39,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:45:39,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1880770843, now seen corresponding path program 2 times [2024-11-21 20:45:39,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:45:39,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143596913] [2024-11-21 20:45:39,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:45:39,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:45:39,884 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:45:39,886 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:45:40,328 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-21 20:45:40,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:45:40,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143596913] [2024-11-21 20:45:40,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143596913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:45:40,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836805279] [2024-11-21 20:45:40,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:45:40,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:45:40,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:45:40,332 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) [2024-11-21 20:45:40,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 20:45:40,399 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:45:40,399 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:45:40,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-21 20:45:40,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:45:40,493 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 15 treesize of output 1 [2024-11-21 20:45:40,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 11 [2024-11-21 20:45:40,550 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 23 treesize of output 11 [2024-11-21 20:45:40,562 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:45:40,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 25 [2024-11-21 20:45:40,685 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 [2024-11-21 20:45:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-21 20:45:40,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:45:40,806 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 19 treesize of output 17 [2024-11-21 20:45:40,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 24 treesize of output 20 [2024-11-21 20:45:40,848 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-21 20:45:40,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836805279] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:45:40,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:45:40,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-21 20:45:40,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201418617] [2024-11-21 20:45:40,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:45:40,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-21 20:45:40,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:45:40,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-21 20:45:40,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-11-21 20:45:40,850 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 22 states, 22 states have (on average 5.909090909090909) internal successors, (130), 22 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:41,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:45:41,165 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2024-11-21 20:45:41,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-21 20:45:41,165 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.909090909090909) internal successors, (130), 22 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-21 20:45:41,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:45:41,168 INFO L225 Difference]: With dead ends: 107 [2024-11-21 20:45:41,168 INFO L226 Difference]: Without dead ends: 78 [2024-11-21 20:45:41,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=199, Invalid=731, Unknown=0, NotChecked=0, Total=930 [2024-11-21 20:45:41,169 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 107 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-21 20:45:41,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 142 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-21 20:45:41,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-21 20:45:41,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 54. [2024-11-21 20:45:41,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 53 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:41,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2024-11-21 20:45:41,178 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 47 [2024-11-21 20:45:41,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:45:41,178 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2024-11-21 20:45:41,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.909090909090909) internal successors, (130), 22 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:41,178 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2024-11-21 20:45:41,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-21 20:45:41,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:45:41,179 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 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, 1, 1, 1] [2024-11-21 20:45:41,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-21 20:45:41,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:45:41,380 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:45:41,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:45:41,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1212426930, now seen corresponding path program 3 times [2024-11-21 20:45:41,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:45:41,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340193745] [2024-11-21 20:45:41,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:45:41,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:45:41,436 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-21 20:45:41,436 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:45:42,073 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-21 20:45:42,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:45:42,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340193745] [2024-11-21 20:45:42,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340193745] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:45:42,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995131086] [2024-11-21 20:45:42,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:45:42,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:45:42,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:45:42,076 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) [2024-11-21 20:45:42,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-21 20:45:42,178 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-21 20:45:42,178 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:45:42,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-21 20:45:42,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:45:42,201 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 13 treesize of output 9 [2024-11-21 20:45:42,222 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:45:42,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 47 treesize of output 38 [2024-11-21 20:45:42,374 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-21 20:45:42,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:45:42,510 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 17 treesize of output 15 [2024-11-21 20:45:42,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-21 20:45:42,514 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-21 20:45:42,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995131086] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:45:42,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:45:42,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 12] total 32 [2024-11-21 20:45:42,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924340806] [2024-11-21 20:45:42,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:45:42,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-21 20:45:42,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:45:42,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-21 20:45:42,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2024-11-21 20:45:42,516 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 32 states, 32 states have (on average 3.9375) internal successors, (126), 32 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:43,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:45:43,738 INFO L93 Difference]: Finished difference Result 181 states and 202 transitions. [2024-11-21 20:45:43,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-21 20:45:43,739 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.9375) internal successors, (126), 32 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-21 20:45:43,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:45:43,742 INFO L225 Difference]: With dead ends: 181 [2024-11-21 20:45:43,742 INFO L226 Difference]: Without dead ends: 98 [2024-11-21 20:45:43,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1202 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=690, Invalid=3732, Unknown=0, NotChecked=0, Total=4422 [2024-11-21 20:45:43,744 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 378 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-21 20:45:43,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 185 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-21 20:45:43,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-21 20:45:43,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 76. [2024-11-21 20:45:43,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0933333333333333) internal successors, (82), 75 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:43,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2024-11-21 20:45:43,756 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 53 [2024-11-21 20:45:43,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:45:43,756 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2024-11-21 20:45:43,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.9375) internal successors, (126), 32 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:43,757 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2024-11-21 20:45:43,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-21 20:45:43,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:45:43,758 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-21 20:45:43,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-21 20:45:43,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:45:43,958 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:45:43,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:45:43,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1835840619, now seen corresponding path program 4 times [2024-11-21 20:45:43,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:45:43,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163683613] [2024-11-21 20:45:43,959 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:45:43,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:45:43,987 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:45:43,987 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:45:44,699 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 20 proven. 43 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-21 20:45:44,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:45:44,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163683613] [2024-11-21 20:45:44,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163683613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:45:44,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478784774] [2024-11-21 20:45:44,700 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:45:44,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:45:44,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:45:44,702 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) [2024-11-21 20:45:44,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-21 20:45:44,784 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:45:44,784 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:45:44,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-21 20:45:44,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:45:44,887 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 15 treesize of output 1 [2024-11-21 20:45:44,919 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:45:44,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 32 [2024-11-21 20:45:44,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:45:44,959 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 31 treesize of output 11 [2024-11-21 20:45:44,975 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:45:44,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 44 [2024-11-21 20:45:45,166 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 [2024-11-21 20:45:45,175 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 30 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-21 20:45:45,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:45:45,417 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 25 treesize of output 23 [2024-11-21 20:45:45,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 102 treesize of output 94 [2024-11-21 20:45:45,501 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 30 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-21 20:45:45,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478784774] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:45:45,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:45:45,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 12] total 31 [2024-11-21 20:45:45,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517600173] [2024-11-21 20:45:45,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:45:45,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-21 20:45:45,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:45:45,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-21 20:45:45,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2024-11-21 20:45:45,503 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand has 31 states, 31 states have (on average 5.516129032258065) internal successors, (171), 31 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:46,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:45:46,062 INFO L93 Difference]: Finished difference Result 97 states and 105 transitions. [2024-11-21 20:45:46,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-21 20:45:46,063 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.516129032258065) internal successors, (171), 31 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-21 20:45:46,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:45:46,064 INFO L225 Difference]: With dead ends: 97 [2024-11-21 20:45:46,064 INFO L226 Difference]: Without dead ends: 87 [2024-11-21 20:45:46,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 135 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=1819, Unknown=0, NotChecked=0, Total=2256 [2024-11-21 20:45:46,065 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 68 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 20:45:46,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 213 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 20:45:46,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-21 20:45:46,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2024-11-21 20:45:46,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.08) internal successors, (81), 75 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:46,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2024-11-21 20:45:46,076 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 75 [2024-11-21 20:45:46,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:45:46,077 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2024-11-21 20:45:46,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.516129032258065) internal successors, (171), 31 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:45:46,077 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2024-11-21 20:45:46,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-21 20:45:46,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:45:46,078 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:45:46,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-21 20:45:46,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:45:46,283 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:45:46,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:45:46,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1442813609, now seen corresponding path program 5 times [2024-11-21 20:45:46,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:45:46,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585115398] [2024-11-21 20:45:46,283 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:45:46,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:45:46,345 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-21 20:45:46,345 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:45:47,612 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:45:47,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:45:47,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585115398] [2024-11-21 20:45:47,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585115398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:45:47,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445002923] [2024-11-21 20:45:47,612 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:45:47,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:45:47,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:45:47,615 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) [2024-11-21 20:45:47,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-21 20:45:48,267 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-21 20:45:48,268 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:45:48,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-21 20:45:48,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:45:48,374 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 15 treesize of output 1 [2024-11-21 20:45:48,402 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:45:48,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 18 [2024-11-21 20:45:48,444 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 23 treesize of output 11 [2024-11-21 20:45:48,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:45:48,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 32 [2024-11-21 20:45:48,474 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 23 treesize of output 11 [2024-11-21 20:45:48,483 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:45:48,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 25 [2024-11-21 20:45:48,506 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 23 treesize of output 11 [2024-11-21 20:45:48,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 11 [2024-11-21 20:45:48,534 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 23 treesize of output 11 [2024-11-21 20:45:48,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 11 [2024-11-21 20:45:48,570 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 23 treesize of output 11 [2024-11-21 20:45:48,579 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:45:48,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 32 [2024-11-21 20:45:48,592 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 23 treesize of output 11 [2024-11-21 20:45:48,601 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:45:48,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 25 [2024-11-21 20:45:48,780 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 [2024-11-21 20:45:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:45:48,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:45:57,236 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 19 treesize of output 17 [2024-11-21 20:45:57,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 24 treesize of output 20 [2024-11-21 20:45:57,316 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 54 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-21 20:45:57,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445002923] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:45:57,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:45:57,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 13] total 33 [2024-11-21 20:45:57,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025933060] [2024-11-21 20:45:57,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:45:57,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-21 20:45:57,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:45:57,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-21 20:45:57,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2024-11-21 20:45:57,318 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand has 33 states, 33 states have (on average 6.181818181818182) internal successors, (204), 33 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:46:02,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:46:02,404 INFO L93 Difference]: Finished difference Result 170 states and 191 transitions. [2024-11-21 20:46:02,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-21 20:46:02,405 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 6.181818181818182) internal successors, (204), 33 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-21 20:46:02,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:46:02,406 INFO L225 Difference]: With dead ends: 170 [2024-11-21 20:46:02,406 INFO L226 Difference]: Without dead ends: 160 [2024-11-21 20:46:02,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 145 SyntacticMatches, 7 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=539, Invalid=2767, Unknown=0, NotChecked=0, Total=3306 [2024-11-21 20:46:02,408 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 380 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-21 20:46:02,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 271 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-21 20:46:02,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-21 20:46:02,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 82. [2024-11-21 20:46:02,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0740740740740742) internal successors, (87), 81 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:46:02,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2024-11-21 20:46:02,417 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 75 [2024-11-21 20:46:02,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:46:02,417 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2024-11-21 20:46:02,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.181818181818182) internal successors, (204), 33 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:46:02,417 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2024-11-21 20:46:02,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-21 20:46:02,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:46:02,418 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:46:02,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-21 20:46:02,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:46:02,619 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:46:02,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:46:02,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1969766492, now seen corresponding path program 6 times [2024-11-21 20:46:02,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:46:02,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758545982] [2024-11-21 20:46:02,620 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 20:46:02,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:46:02,649 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-21 20:46:02,649 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:46:03,661 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 88 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-21 20:46:03,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:46:03,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758545982] [2024-11-21 20:46:03,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758545982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:46:03,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647975960] [2024-11-21 20:46:03,662 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 20:46:03,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:46:03,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:46:03,663 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) [2024-11-21 20:46:03,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-21 20:46:03,966 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-21 20:46:03,966 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:46:03,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-21 20:46:03,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:46:04,093 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 15 treesize of output 1 [2024-11-21 20:46:04,121 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:46:04,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 32 [2024-11-21 20:46:04,180 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 23 treesize of output 11 [2024-11-21 20:46:04,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 11 [2024-11-21 20:46:04,212 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 23 treesize of output 11 [2024-11-21 20:46:04,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 11 [2024-11-21 20:46:04,247 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 23 treesize of output 11 [2024-11-21 20:46:04,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:46:04,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 32 [2024-11-21 20:46:04,282 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 23 treesize of output 11 [2024-11-21 20:46:04,290 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:46:04,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 25 [2024-11-21 20:46:04,536 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 [2024-11-21 20:46:04,541 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 88 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-21 20:46:04,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:46:04,904 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 19 treesize of output 17 [2024-11-21 20:46:04,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 24 treesize of output 20 [2024-11-21 20:46:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 80 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-21 20:46:04,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647975960] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:46:04,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:46:04,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 14] total 36 [2024-11-21 20:46:04,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046210080] [2024-11-21 20:46:04,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:46:04,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-21 20:46:04,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:46:04,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-21 20:46:04,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1131, Unknown=0, NotChecked=0, Total=1260 [2024-11-21 20:46:04,992 INFO L87 Difference]: Start difference. First operand 82 states and 87 transitions. Second operand has 36 states, 36 states have (on average 5.944444444444445) internal successors, (214), 36 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:46:06,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:46:06,448 INFO L93 Difference]: Finished difference Result 180 states and 202 transitions. [2024-11-21 20:46:06,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-21 20:46:06,449 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.944444444444445) internal successors, (214), 36 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-21 20:46:06,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:46:06,450 INFO L225 Difference]: With dead ends: 180 [2024-11-21 20:46:06,450 INFO L226 Difference]: Without dead ends: 170 [2024-11-21 20:46:06,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 150 SyntacticMatches, 5 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=577, Invalid=3583, Unknown=0, NotChecked=0, Total=4160 [2024-11-21 20:46:06,452 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 576 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 1884 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 2086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-21 20:46:06,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 380 Invalid, 2086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1884 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-21 20:46:06,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-21 20:46:06,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 88. [2024-11-21 20:46:06,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.0689655172413792) internal successors, (93), 87 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:46:06,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2024-11-21 20:46:06,464 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 81 [2024-11-21 20:46:06,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:46:06,464 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2024-11-21 20:46:06,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.944444444444445) internal successors, (214), 36 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:46:06,464 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2024-11-21 20:46:06,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-21 20:46:06,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:46:06,468 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:46:06,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-21 20:46:06,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:46:06,670 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:46:06,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:46:06,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1625921487, now seen corresponding path program 7 times [2024-11-21 20:46:06,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:46:06,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929217374] [2024-11-21 20:46:06,671 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-21 20:46:06,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:46:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:46:07,461 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 12 proven. 114 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-21 20:46:07,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:46:07,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929217374] [2024-11-21 20:46:07,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929217374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:46:07,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383634952] [2024-11-21 20:46:07,462 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-21 20:46:07,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:46:07,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:46:07,476 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) [2024-11-21 20:46:07,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-21 20:46:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:46:07,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-21 20:46:07,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:46:07,755 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 15 treesize of output 1 [2024-11-21 20:46:07,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 11 [2024-11-21 20:46:07,822 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 23 treesize of output 11 [2024-11-21 20:46:07,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:46:07,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 32 [2024-11-21 20:46:07,848 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 23 treesize of output 11 [2024-11-21 20:46:07,857 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:46:07,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 25 [2024-11-21 20:46:08,134 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 [2024-11-21 20:46:08,139 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 12 proven. 124 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-21 20:46:08,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:46:08,430 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 19 treesize of output 17 [2024-11-21 20:46:08,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 24 treesize of output 20 [2024-11-21 20:46:08,518 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 12 proven. 108 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-21 20:46:08,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383634952] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:46:08,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:46:08,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 37 [2024-11-21 20:46:08,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32775882] [2024-11-21 20:46:08,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:46:08,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-21 20:46:08,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:46:08,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-21 20:46:08,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1209, Unknown=0, NotChecked=0, Total=1332 [2024-11-21 20:46:08,520 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand has 37 states, 37 states have (on average 6.1891891891891895) internal successors, (229), 37 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:46:09,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:46:09,796 INFO L93 Difference]: Finished difference Result 172 states and 192 transitions. [2024-11-21 20:46:09,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-21 20:46:09,797 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.1891891891891895) internal successors, (229), 37 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-11-21 20:46:09,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:46:09,798 INFO L225 Difference]: With dead ends: 172 [2024-11-21 20:46:09,798 INFO L226 Difference]: Without dead ends: 162 [2024-11-21 20:46:09,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 157 SyntacticMatches, 5 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 766 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=482, Invalid=3550, Unknown=0, NotChecked=0, Total=4032 [2024-11-21 20:46:09,799 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 411 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 2104 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 2250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 2104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-21 20:46:09,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 442 Invalid, 2250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 2104 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-21 20:46:09,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-21 20:46:09,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 94. [2024-11-21 20:46:09,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.064516129032258) internal successors, (99), 93 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:46:09,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2024-11-21 20:46:09,806 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 87 [2024-11-21 20:46:09,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:46:09,807 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2024-11-21 20:46:09,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.1891891891891895) internal successors, (229), 37 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:46:09,807 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2024-11-21 20:46:09,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-21 20:46:09,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:46:09,807 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:46:09,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-21 20:46:10,008 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,SelfDestructingSolverStorable11 [2024-11-21 20:46:10,009 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:46:10,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:46:10,009 INFO L85 PathProgramCache]: Analyzing trace with hash -382055166, now seen corresponding path program 8 times [2024-11-21 20:46:10,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:46:10,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956674044] [2024-11-21 20:46:10,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:46:10,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:46:10,035 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:46:10,035 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:46:10,431 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-21 20:46:10,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:46:10,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956674044] [2024-11-21 20:46:10,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956674044] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:46:10,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35609299] [2024-11-21 20:46:10,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:46:10,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:46:10,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:46:10,434 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) [2024-11-21 20:46:10,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-21 20:46:10,550 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:46:10,551 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:46:10,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-21 20:46:10,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:46:10,647 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 [2024-11-21 20:46:10,672 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:46:10,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 32 [2024-11-21 20:46:10,987 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-21 20:46:10,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:46:11,095 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 17 treesize of output 15 [2024-11-21 20:46:11,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-21 20:46:11,102 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-21 20:46:11,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35609299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:46:11,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:46:11,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 17] total 34 [2024-11-21 20:46:11,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555848383] [2024-11-21 20:46:11,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:46:11,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-21 20:46:11,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:46:11,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-21 20:46:11,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2024-11-21 20:46:11,105 INFO L87 Difference]: Start difference. First operand 94 states and 99 transitions. Second operand has 34 states, 34 states have (on average 5.088235294117647) internal successors, (173), 34 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:46:11,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:46:11,830 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2024-11-21 20:46:11,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-21 20:46:11,830 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.088235294117647) internal successors, (173), 34 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-21 20:46:11,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:46:11,831 INFO L225 Difference]: With dead ends: 140 [2024-11-21 20:46:11,831 INFO L226 Difference]: Without dead ends: 138 [2024-11-21 20:46:11,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=311, Invalid=2341, Unknown=0, NotChecked=0, Total=2652 [2024-11-21 20:46:11,832 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 62 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-21 20:46:11,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 344 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-21 20:46:11,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-21 20:46:11,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 100. [2024-11-21 20:46:11,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.0707070707070707) internal successors, (106), 99 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:46:11,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2024-11-21 20:46:11,840 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 93 [2024-11-21 20:46:11,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:46:11,840 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2024-11-21 20:46:11,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.088235294117647) internal successors, (173), 34 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:46:11,840 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2024-11-21 20:46:11,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-21 20:46:11,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:46:11,840 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:46:11,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-21 20:46:12,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-21 20:46:12,041 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:46:12,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:46:12,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1196232693, now seen corresponding path program 9 times [2024-11-21 20:46:12,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:46:12,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975294644] [2024-11-21 20:46:12,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:46:12,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:46:12,070 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-21 20:46:12,070 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:46:12,426 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 157 proven. 49 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-21 20:46:12,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:46:12,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975294644] [2024-11-21 20:46:12,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975294644] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:46:12,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924834019] [2024-11-21 20:46:12,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:46:12,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:46:12,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:46:12,428 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) [2024-11-21 20:46:12,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-21 20:46:12,802 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-21 20:46:12,802 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:46:12,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-21 20:46:12,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:46:13,413 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 200 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-21 20:46:13,414 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:46:13,689 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 200 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-21 20:46:13,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924834019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:46:13,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:46:13,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 45 [2024-11-21 20:46:13,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591008878] [2024-11-21 20:46:13,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:46:13,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-21 20:46:13,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:46:13,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-21 20:46:13,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=495, Invalid=1485, Unknown=0, NotChecked=0, Total=1980 [2024-11-21 20:46:13,691 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand has 45 states, 45 states have (on average 5.511111111111111) internal successors, (248), 45 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:46:14,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:46:14,079 INFO L93 Difference]: Finished difference Result 287 states and 306 transitions. [2024-11-21 20:46:14,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-21 20:46:14,079 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.511111111111111) internal successors, (248), 45 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-11-21 20:46:14,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:46:14,080 INFO L225 Difference]: With dead ends: 287 [2024-11-21 20:46:14,080 INFO L226 Difference]: Without dead ends: 128 [2024-11-21 20:46:14,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=628, Invalid=1922, Unknown=0, NotChecked=0, Total=2550 [2024-11-21 20:46:14,082 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 400 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 20:46:14,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 310 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 20:46:14,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-21 20:46:14,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 116. [2024-11-21 20:46:14,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.0608695652173914) internal successors, (122), 115 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:46:14,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 122 transitions. [2024-11-21 20:46:14,092 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 122 transitions. Word has length 99 [2024-11-21 20:46:14,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:46:14,092 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 122 transitions. [2024-11-21 20:46:14,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.511111111111111) internal successors, (248), 45 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:46:14,093 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 122 transitions. [2024-11-21 20:46:14,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-21 20:46:14,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:46:14,093 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:46:14,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-21 20:46:14,293 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,SelfDestructingSolverStorable13 [2024-11-21 20:46:14,294 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:46:14,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:46:14,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1981607905, now seen corresponding path program 10 times [2024-11-21 20:46:14,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:46:14,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903913902] [2024-11-21 20:46:14,295 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:46:14,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:46:14,331 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:46:14,332 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:46:15,336 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 50 proven. 195 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-21 20:46:15,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:46:15,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903913902] [2024-11-21 20:46:15,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903913902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:46:15,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196143262] [2024-11-21 20:46:15,336 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:46:15,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:46:15,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:46:15,339 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) [2024-11-21 20:46:15,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-21 20:46:15,472 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:46:15,472 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:46:15,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-21 20:46:15,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:46:15,642 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 15 treesize of output 1 [2024-11-21 20:46:15,674 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:46:15,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 32 [2024-11-21 20:46:15,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:46:15,715 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 31 treesize of output 11 [2024-11-21 20:46:15,725 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:46:15,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 44 [2024-11-21 20:46:16,163 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 [2024-11-21 20:46:16,167 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 58 proven. 164 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-21 20:46:16,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:46:16,549 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 25 treesize of output 23 [2024-11-21 20:46:16,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 46 treesize of output 42 [2024-11-21 20:46:16,661 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 58 proven. 155 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-21 20:46:16,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196143262] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:46:16,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:46:16,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 16, 17] total 54 [2024-11-21 20:46:16,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368219684] [2024-11-21 20:46:16,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:46:16,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-21 20:46:16,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:46:16,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-21 20:46:16,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=2544, Unknown=0, NotChecked=0, Total=2862 [2024-11-21 20:46:16,664 INFO L87 Difference]: Start difference. First operand 116 states and 122 transitions. Second operand has 54 states, 54 states have (on average 5.018518518518518) internal successors, (271), 54 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:46:18,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:46:18,964 INFO L93 Difference]: Finished difference Result 149 states and 160 transitions. [2024-11-21 20:46:18,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-21 20:46:18,964 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.018518518518518) internal successors, (271), 54 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2024-11-21 20:46:18,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:46:18,965 INFO L225 Difference]: With dead ends: 149 [2024-11-21 20:46:18,965 INFO L226 Difference]: Without dead ends: 139 [2024-11-21 20:46:18,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 204 SyntacticMatches, 3 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2749 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1421, Invalid=9085, Unknown=0, NotChecked=0, Total=10506 [2024-11-21 20:46:18,967 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 338 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 3057 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 3204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 3057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:46:18,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 526 Invalid, 3204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 3057 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-21 20:46:18,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-21 20:46:18,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 116. [2024-11-21 20:46:18,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.0521739130434782) internal successors, (121), 115 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:46:18,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2024-11-21 20:46:18,978 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 115 [2024-11-21 20:46:18,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:46:18,978 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2024-11-21 20:46:18,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.018518518518518) internal successors, (271), 54 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:46:18,979 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2024-11-21 20:46:18,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-21 20:46:18,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:46:18,979 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:46:18,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-21 20:46:19,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-21 20:46:19,180 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:46:19,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:46:19,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1920332381, now seen corresponding path program 11 times [2024-11-21 20:46:19,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:46:19,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440551403] [2024-11-21 20:46:19,181 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:46:19,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:46:19,230 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-21 20:46:19,231 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:46:21,335 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 16 proven. 214 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-21 20:46:21,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:46:21,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440551403] [2024-11-21 20:46:21,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440551403] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:46:21,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250184633] [2024-11-21 20:46:21,335 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:46:21,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:46:21,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:46:21,337 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:46:21,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-21 20:46:25,672 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-21 20:46:25,672 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:46:25,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-21 20:46:25,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:46:25,811 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 15 treesize of output 1 [2024-11-21 20:46:25,838 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:46:25,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 18 [2024-11-21 20:46:25,897 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 23 treesize of output 11 [2024-11-21 20:46:25,908 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:46:25,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 32 [2024-11-21 20:46:25,943 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 23 treesize of output 11 [2024-11-21 20:46:25,954 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:46:25,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 32 [2024-11-21 20:46:25,971 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 23 treesize of output 11 [2024-11-21 20:46:25,978 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:46:25,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 25 [2024-11-21 20:46:26,002 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 23 treesize of output 11 [2024-11-21 20:46:26,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 11 [2024-11-21 20:46:26,028 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 23 treesize of output 11 [2024-11-21 20:46:26,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 11 [2024-11-21 20:46:26,054 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 23 treesize of output 11 [2024-11-21 20:46:26,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 11 [2024-11-21 20:46:26,086 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 23 treesize of output 11 [2024-11-21 20:46:26,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:46:26,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 32 [2024-11-21 20:46:26,111 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 23 treesize of output 11 [2024-11-21 20:46:26,126 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:46:26,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 32 [2024-11-21 20:46:26,147 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 23 treesize of output 11 [2024-11-21 20:46:26,155 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:46:26,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 25 [2024-11-21 20:46:26,513 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 [2024-11-21 20:46:26,518 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 16 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:46:26,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:46:31,345 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 19 treesize of output 17 [2024-11-21 20:46:31,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 24 treesize of output 20 [2024-11-21 20:46:31,476 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 16 proven. 212 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-21 20:46:31,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250184633] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:46:31,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:46:31,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 20] total 51 [2024-11-21 20:46:31,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644941617] [2024-11-21 20:46:31,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:46:31,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-21 20:46:31,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:46:31,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-21 20:46:31,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2024-11-21 20:46:31,478 INFO L87 Difference]: Start difference. First operand 116 states and 121 transitions. Second operand has 51 states, 51 states have (on average 5.882352941176471) internal successors, (300), 51 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:46:44,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:46:44,801 INFO L93 Difference]: Finished difference Result 288 states and 327 transitions. [2024-11-21 20:46:44,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-21 20:46:44,801 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.882352941176471) internal successors, (300), 51 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2024-11-21 20:46:44,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:46:44,802 INFO L225 Difference]: With dead ends: 288 [2024-11-21 20:46:44,802 INFO L226 Difference]: Without dead ends: 278 [2024-11-21 20:46:44,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 212 SyntacticMatches, 14 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3447 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=1314, Invalid=10242, Unknown=0, NotChecked=0, Total=11556 [2024-11-21 20:46:44,806 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 819 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 4319 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 4703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 4319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-21 20:46:44,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 729 Invalid, 4703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 4319 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-21 20:46:44,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-21 20:46:44,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 122. [2024-11-21 20:46:44,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.0495867768595042) internal successors, (127), 121 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:46:44,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 127 transitions. [2024-11-21 20:46:44,818 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 127 transitions. Word has length 115 [2024-11-21 20:46:44,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:46:44,818 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 127 transitions. [2024-11-21 20:46:44,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.882352941176471) internal successors, (300), 51 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:46:44,818 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 127 transitions. [2024-11-21 20:46:44,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-21 20:46:44,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:46:44,819 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:46:44,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-21 20:46:45,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-21 20:46:45,020 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:46:45,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:46:45,020 INFO L85 PathProgramCache]: Analyzing trace with hash -363854576, now seen corresponding path program 12 times [2024-11-21 20:46:45,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:46:45,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309176152] [2024-11-21 20:46:45,020 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 20:46:45,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:46:45,074 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-21 20:46:45,074 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:46:47,605 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 20 proven. 278 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-21 20:46:47,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:46:47,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309176152] [2024-11-21 20:46:47,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309176152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:46:47,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366032847] [2024-11-21 20:46:47,605 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 20:46:47,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:46:47,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:46:47,607 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:46:47,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-21 20:46:49,085 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-21 20:46:49,085 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:46:49,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-21 20:46:49,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:46:49,288 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 15 treesize of output 1 [2024-11-21 20:46:49,320 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:46:49,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 32 [2024-11-21 20:46:49,392 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 23 treesize of output 11 [2024-11-21 20:46:49,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 11 [2024-11-21 20:46:49,445 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 23 treesize of output 11 [2024-11-21 20:46:49,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 11 [2024-11-21 20:46:49,466 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 23 treesize of output 11 [2024-11-21 20:46:49,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 11 [2024-11-21 20:46:49,494 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 23 treesize of output 11 [2024-11-21 20:46:49,503 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:46:49,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 32 [2024-11-21 20:46:49,520 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 23 treesize of output 11 [2024-11-21 20:46:49,532 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:46:49,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 32 [2024-11-21 20:46:49,583 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 31 treesize of output 11 [2024-11-21 20:46:49,602 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-21 20:46:49,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 61 treesize of output 44 [2024-11-21 20:46:50,056 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 [2024-11-21 20:46:50,085 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 18 proven. 279 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-21 20:46:50,085 INFO L311 TraceCheckSpWp]: Computing backward predicates...