./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-tiling/nr3.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/nr3.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 4885a4fffd0288753086daaa59bdb12816a7be62636dc49311bbb97ad277d866 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 20:45:46,952 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 20:45:47,011 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 20:45:47,015 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 20:45:47,015 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 20:45:47,040 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 20:45:47,040 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 20:45:47,041 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 20:45:47,041 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 20:45:47,042 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 20:45:47,042 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 20:45:47,042 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 20:45:47,043 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 20:45:47,043 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 20:45:47,044 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 20:45:47,044 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 20:45:47,044 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 20:45:47,045 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 20:45:47,045 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 20:45:47,045 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 20:45:47,045 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 20:45:47,046 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 20:45:47,046 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 20:45:47,047 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 20:45:47,047 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 20:45:47,047 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 20:45:47,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 20:45:47,048 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 20:45:47,048 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 20:45:47,048 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 20:45:47,048 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 20:45:47,049 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 20:45:47,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:45:47,049 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 20:45:47,050 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 20:45:47,050 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 20:45:47,050 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 20:45:47,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 20:45:47,050 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 20:45:47,051 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 20:45:47,051 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 20:45:47,053 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 20:45:47,053 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4885a4fffd0288753086daaa59bdb12816a7be62636dc49311bbb97ad277d866 [2024-11-21 20:45:47,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 20:45:47,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 20:45:47,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 20:45:47,344 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 20:45:47,345 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 20:45:47,346 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/nr3.c [2024-11-21 20:45:48,799 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 20:45:48,973 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 20:45:48,973 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/nr3.c [2024-11-21 20:45:48,980 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb1955c4d/078d378a4391441ca580ca9dd6fe107c/FLAG0325d686a [2024-11-21 20:45:49,376 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb1955c4d/078d378a4391441ca580ca9dd6fe107c [2024-11-21 20:45:49,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 20:45:49,383 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 20:45:49,383 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 20:45:49,384 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 20:45:49,388 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 20:45:49,389 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:45:49" (1/1) ... [2024-11-21 20:45:49,389 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35fd48e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:49, skipping insertion in model container [2024-11-21 20:45:49,389 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:45:49" (1/1) ... [2024-11-21 20:45:49,409 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 20:45:49,605 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/nr3.c[394,407] [2024-11-21 20:45:49,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:45:49,639 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 20:45:49,651 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/nr3.c[394,407] [2024-11-21 20:45:49,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:45:49,682 INFO L204 MainTranslator]: Completed translation [2024-11-21 20:45:49,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:49 WrapperNode [2024-11-21 20:45:49,683 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 20:45:49,684 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 20:45:49,685 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 20:45:49,685 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 20:45:49,692 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:49" (1/1) ... [2024-11-21 20:45:49,700 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:49" (1/1) ... [2024-11-21 20:45:49,721 INFO L138 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2024-11-21 20:45:49,721 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 20:45:49,722 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 20:45:49,722 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 20:45:49,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 20:45:49,733 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:49" (1/1) ... [2024-11-21 20:45:49,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:49" (1/1) ... [2024-11-21 20:45:49,736 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:49" (1/1) ... [2024-11-21 20:45:49,752 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 6, 4]. 50 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0]. The 2 writes are split as follows [0, 0, 2]. [2024-11-21 20:45:49,752 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:49" (1/1) ... [2024-11-21 20:45:49,753 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:49" (1/1) ... [2024-11-21 20:45:49,757 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:49" (1/1) ... [2024-11-21 20:45:49,760 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:49" (1/1) ... [2024-11-21 20:45:49,762 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:49" (1/1) ... [2024-11-21 20:45:49,762 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:49" (1/1) ... [2024-11-21 20:45:49,764 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 20:45:49,765 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 20:45:49,765 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 20:45:49,765 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 20:45:49,766 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:49" (1/1) ... [2024-11-21 20:45:49,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:45:49,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:45:49,801 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 20:45:49,804 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 20:45:49,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 20:45:49,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 20:45:49,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-21 20:45:49,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-21 20:45:49,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-21 20:45:49,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-21 20:45:49,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-21 20:45:49,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-21 20:45:49,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 20:45:49,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 20:45:49,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-21 20:45:49,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-21 20:45:49,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-21 20:45:49,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-21 20:45:49,936 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 20:45:49,938 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 20:45:50,138 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-21 20:45:50,139 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 20:45:50,148 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 20:45:50,149 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-21 20:45:50,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:45:50 BoogieIcfgContainer [2024-11-21 20:45:50,149 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 20:45:50,151 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 20:45:50,151 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 20:45:50,155 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 20:45:50,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:45:49" (1/3) ... [2024-11-21 20:45:50,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b576ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:45:50, skipping insertion in model container [2024-11-21 20:45:50,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:45:49" (2/3) ... [2024-11-21 20:45:50,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b576ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:45:50, skipping insertion in model container [2024-11-21 20:45:50,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:45:50" (3/3) ... [2024-11-21 20:45:50,160 INFO L112 eAbstractionObserver]: Analyzing ICFG nr3.c [2024-11-21 20:45:50,173 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 20:45:50,173 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 20:45:50,216 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 20:45:50,222 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;@2ce87d37, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 20:45:50,222 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 20:45:50,225 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 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 20:45:50,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-21 20:45:50,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:45:50,230 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:45:50,230 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:45:50,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:45:50,235 INFO L85 PathProgramCache]: Analyzing trace with hash -405965127, now seen corresponding path program 1 times [2024-11-21 20:45:50,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:45:50,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651632193] [2024-11-21 20:45:50,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:45:50,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:45:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:45:50,449 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 20:45:50,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:45:50,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651632193] [2024-11-21 20:45:50,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651632193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:45:50,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:45:50,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 20:45:50,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130422126] [2024-11-21 20:45:50,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:45:50,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-21 20:45:50,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:45:50,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-21 20:45:50,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-21 20:45:50,485 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 20:45:50,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:45:50,501 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2024-11-21 20:45:50,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-21 20:45:50,504 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2024-11-21 20:45:50,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:45:50,510 INFO L225 Difference]: With dead ends: 45 [2024-11-21 20:45:50,510 INFO L226 Difference]: Without dead ends: 20 [2024-11-21 20:45:50,513 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 20:45:50,516 INFO L432 NwaCegarLoop]: 31 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, 31 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 20:45:50,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:45:50,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-21 20:45:50,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-21 20:45:50,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 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 20:45:50,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-11-21 20:45:50,549 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2024-11-21 20:45:50,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:45:50,549 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-21 20:45:50,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 20:45:50,550 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-11-21 20:45:50,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-21 20:45:50,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:45:50,551 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:45:50,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 20:45:50,552 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:45:50,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:45:50,553 INFO L85 PathProgramCache]: Analyzing trace with hash 274093243, now seen corresponding path program 1 times [2024-11-21 20:45:50,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:45:50,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152919834] [2024-11-21 20:45:50,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:45:50,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:45:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:45:50,766 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 20:45:50,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:45:50,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152919834] [2024-11-21 20:45:50,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152919834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:45:50,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:45:50,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 20:45:50,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392073014] [2024-11-21 20:45:50,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:45:50,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 20:45:50,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:45:50,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 20:45:50,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:45:50,773 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 20:45:50,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:45:50,801 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2024-11-21 20:45:50,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 20:45:50,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2024-11-21 20:45:50,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:45:50,803 INFO L225 Difference]: With dead ends: 24 [2024-11-21 20:45:50,803 INFO L226 Difference]: Without dead ends: 22 [2024-11-21 20:45:50,804 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 20:45:50,805 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 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 20:45:50,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:45:50,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-21 20:45:50,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-21 20:45:50,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 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 20:45:50,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-11-21 20:45:50,812 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2024-11-21 20:45:50,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:45:50,812 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-21 20:45:50,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 20:45:50,813 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-11-21 20:45:50,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-21 20:45:50,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:45:50,813 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:45:50,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-21 20:45:50,814 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:45:50,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:45:50,815 INFO L85 PathProgramCache]: Analyzing trace with hash 274152825, now seen corresponding path program 1 times [2024-11-21 20:45:50,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:45:50,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150678630] [2024-11-21 20:45:50,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:45:50,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:45:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:45:51,101 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 20:45:51,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:45:51,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150678630] [2024-11-21 20:45:51,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150678630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:45:51,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:45:51,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-21 20:45:51,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365272881] [2024-11-21 20:45:51,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:45:51,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-21 20:45:51,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:45:51,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-21 20:45:51,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:45:51,108 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 20:45:51,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:45:51,160 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2024-11-21 20:45:51,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-21 20:45:51,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2024-11-21 20:45:51,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:45:51,161 INFO L225 Difference]: With dead ends: 38 [2024-11-21 20:45:51,161 INFO L226 Difference]: Without dead ends: 27 [2024-11-21 20:45:51,162 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 20:45:51,163 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 56 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:45:51,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 27 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:45:51,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-21 20:45:51,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2024-11-21 20:45:51,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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 20:45:51,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-21 20:45:51,174 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 13 [2024-11-21 20:45:51,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:45:51,175 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-21 20:45:51,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 20:45:51,176 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-21 20:45:51,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-21 20:45:51,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:45:51,177 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:45:51,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-21 20:45:51,177 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:45:51,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:45:51,178 INFO L85 PathProgramCache]: Analyzing trace with hash -715167033, now seen corresponding path program 1 times [2024-11-21 20:45:51,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:45:51,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840268133] [2024-11-21 20:45:51,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:45:51,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:45:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:45:51,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:45:51,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:45:51,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840268133] [2024-11-21 20:45:51,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840268133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:45:51,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:45:51,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 20:45:51,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705540654] [2024-11-21 20:45:51,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:45:51,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 20:45:51,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:45:51,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 20:45:51,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 20:45:51,255 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 20:45:51,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:45:51,279 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2024-11-21 20:45:51,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 20:45:51,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2024-11-21 20:45:51,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:45:51,281 INFO L225 Difference]: With dead ends: 42 [2024-11-21 20:45:51,281 INFO L226 Difference]: Without dead ends: 26 [2024-11-21 20:45:51,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 20:45:51,286 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:45:51,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 36 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:45:51,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-21 20:45:51,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-11-21 20:45:51,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 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 20:45:51,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-21 20:45:51,295 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2024-11-21 20:45:51,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:45:51,295 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-21 20:45:51,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 20:45:51,296 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-21 20:45:51,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-21 20:45:51,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:45:51,298 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 20:45:51,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-21 20:45:51,298 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:45:51,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:45:51,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1618667584, now seen corresponding path program 1 times [2024-11-21 20:45:51,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:45:51,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770690568] [2024-11-21 20:45:51,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:45:51,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:45:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:45:51,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:45:51,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:45:51,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770690568] [2024-11-21 20:45:51,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770690568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:45:51,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383515335] [2024-11-21 20:45:51,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:45:51,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:45:51,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:45:51,381 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 20:45:51,383 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 20:45:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:45:51,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 20:45:51,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:45:51,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:45:51,501 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:45:51,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:45:51,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383515335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:45:51,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:45:51,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-21 20:45:51,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383520623] [2024-11-21 20:45:51,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:45:51,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-21 20:45:51,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:45:51,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-21 20:45:51,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-21 20:45:51,535 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 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 20:45:51,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:45:51,573 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2024-11-21 20:45:51,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-21 20:45:51,574 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 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 20:45:51,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:45:51,574 INFO L225 Difference]: With dead ends: 47 [2024-11-21 20:45:51,575 INFO L226 Difference]: Without dead ends: 30 [2024-11-21 20:45:51,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-21 20:45:51,576 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 7 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:45:51,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 36 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:45:51,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-21 20:45:51,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-21 20:45:51,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 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 20:45:51,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-21 20:45:51,584 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 19 [2024-11-21 20:45:51,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:45:51,584 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-21 20:45:51,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 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 20:45:51,584 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-21 20:45:51,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-21 20:45:51,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:45:51,585 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:45:51,595 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 20:45:51,789 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 20:45:51,790 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:45:51,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:45:51,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1797589728, now seen corresponding path program 2 times [2024-11-21 20:45:51,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:45:51,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561759261] [2024-11-21 20:45:51,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:45:51,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:45:51,819 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:45:51,820 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:45:51,955 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:45:51,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:45:51,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561759261] [2024-11-21 20:45:51,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561759261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:45:51,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780543996] [2024-11-21 20:45:51,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:45:51,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:45:51,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:45:51,959 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 20:45:51,961 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 20:45:52,023 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:45:52,024 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:45:52,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-21 20:45:52,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:45:52,113 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:45:52,113 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 20:45:52,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780543996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:45:52,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 20:45:52,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-21 20:45:52,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915666318] [2024-11-21 20:45:52,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:45:52,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-21 20:45:52,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:45:52,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-21 20:45:52,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-11-21 20:45:52,119 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 20:45:52,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:45:52,161 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2024-11-21 20:45:52,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-21 20:45:52,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 25 [2024-11-21 20:45:52,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:45:52,162 INFO L225 Difference]: With dead ends: 53 [2024-11-21 20:45:52,163 INFO L226 Difference]: Without dead ends: 30 [2024-11-21 20:45:52,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-11-21 20:45:52,164 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 17 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:45:52,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 48 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:45:52,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-21 20:45:52,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-21 20:45:52,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 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 20:45:52,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-11-21 20:45:52,176 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 25 [2024-11-21 20:45:52,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:45:52,176 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-11-21 20:45:52,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 20:45:52,177 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-11-21 20:45:52,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-21 20:45:52,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:45:52,178 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:45:52,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-21 20:45:52,378 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 20:45:52,379 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:45:52,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:45:52,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1796312990, now seen corresponding path program 1 times [2024-11-21 20:45:52,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:45:52,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448194072] [2024-11-21 20:45:52,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:45:52,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:45:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:45:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:45:53,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:45:53,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448194072] [2024-11-21 20:45:53,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448194072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:45:53,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112926218] [2024-11-21 20:45:53,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:45:53,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:45:53,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:45:53,051 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 20:45:53,053 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 20:45:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:45:53,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-21 20:45:53,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:45:53,252 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 20:45:53,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-21 20:45:53,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:45:53,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:45:53,448 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:45:53,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 21 [2024-11-21 20:45:53,571 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:45:53,571 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:45:57,778 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_21| Int) (v_ArrVal_51 Int)) (or (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select (let ((.cse0 (* 12 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int#2| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~j~0#1| (- 4)) .cse0) |c_ULTIMATE.start_main_~j~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_21| (- 4))) v_ArrVal_51)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 1)) (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_21| 1)))) is different from false [2024-11-21 20:46:13,988 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 42 treesize of output 40 [2024-11-21 20:46:13,995 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 298 treesize of output 294 [2024-11-21 20:46:14,188 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2024-11-21 20:46:14,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112926218] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:46:14,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:46:14,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 33 [2024-11-21 20:46:14,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385447079] [2024-11-21 20:46:14,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:46:14,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-21 20:46:14,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:46:14,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-21 20:46:14,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=826, Unknown=5, NotChecked=60, Total=1056 [2024-11-21 20:46:14,191 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 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 20:46:15,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:46:15,602 INFO L93 Difference]: Finished difference Result 139 states and 166 transitions. [2024-11-21 20:46:15,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-21 20:46:15,602 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 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 25 [2024-11-21 20:46:15,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:46:15,603 INFO L225 Difference]: With dead ends: 139 [2024-11-21 20:46:15,603 INFO L226 Difference]: Without dead ends: 116 [2024-11-21 20:46:15,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1116 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=689, Invalid=3216, Unknown=5, NotChecked=122, Total=4032 [2024-11-21 20:46:15,606 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 284 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-21 20:46:15,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 214 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 521 Invalid, 0 Unknown, 108 Unchecked, 0.5s Time] [2024-11-21 20:46:15,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-21 20:46:15,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 68. [2024-11-21 20:46:15,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.208955223880597) internal successors, (81), 67 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 20:46:15,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2024-11-21 20:46:15,617 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 25 [2024-11-21 20:46:15,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:46:15,618 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2024-11-21 20:46:15,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 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 20:46:15,618 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2024-11-21 20:46:15,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-21 20:46:15,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:46:15,619 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:46:15,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-21 20:46:15,823 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 20:46:15,824 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:46:15,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:46:15,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1798450104, now seen corresponding path program 1 times [2024-11-21 20:46:15,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:46:15,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618480819] [2024-11-21 20:46:15,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:46:15,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:46:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:46:16,261 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:46:16,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:46:16,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618480819] [2024-11-21 20:46:16,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618480819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:46:16,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910815855] [2024-11-21 20:46:16,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:46:16,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:46:16,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:46:16,264 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 20:46:16,266 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 20:46:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:46:16,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-21 20:46:16,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:46:16,389 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 20:46:16,499 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:46:16,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:46:16,580 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 20:46:16,585 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 20:46:16,749 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:46:16,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910815855] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:46:16,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:46:16,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 23 [2024-11-21 20:46:16,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050875412] [2024-11-21 20:46:16,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:46:16,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-21 20:46:16,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:46:16,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-21 20:46:16,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2024-11-21 20:46:16,751 INFO L87 Difference]: Start difference. First operand 68 states and 81 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 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 20:46:17,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:46:17,173 INFO L93 Difference]: Finished difference Result 131 states and 154 transitions. [2024-11-21 20:46:17,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-21 20:46:17,176 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 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 37 [2024-11-21 20:46:17,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:46:17,178 INFO L225 Difference]: With dead ends: 131 [2024-11-21 20:46:17,178 INFO L226 Difference]: Without dead ends: 129 [2024-11-21 20:46:17,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2024-11-21 20:46:17,182 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 49 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 20:46:17,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 213 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 20:46:17,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-21 20:46:17,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 95. [2024-11-21 20:46:17,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.2234042553191489) internal successors, (115), 94 states have internal predecessors, (115), 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 20:46:17,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 115 transitions. [2024-11-21 20:46:17,209 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 115 transitions. Word has length 37 [2024-11-21 20:46:17,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:46:17,210 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 115 transitions. [2024-11-21 20:46:17,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 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 20:46:17,210 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 115 transitions. [2024-11-21 20:46:17,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-21 20:46:17,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:46:17,211 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:46:17,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-21 20:46:17,411 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 20:46:17,411 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:46:17,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:46:17,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1685353013, now seen corresponding path program 2 times [2024-11-21 20:46:17,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:46:17,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523754307] [2024-11-21 20:46:17,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:46:17,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:46:17,437 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:46:17,437 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:46:18,530 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 59 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:46:18,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:46:18,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523754307] [2024-11-21 20:46:18,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523754307] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:46:18,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183176527] [2024-11-21 20:46:18,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:46:18,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:46:18,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:46:18,535 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 20:46:18,537 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 20:46:18,594 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:46:18,595 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:46:18,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-21 20:46:18,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:46:18,637 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 20:46:18,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-21 20:46:18,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:46:18,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:46:18,829 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:46:18,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 21 [2024-11-21 20:46:18,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:46:18,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:46:18,995 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:46:18,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2024-11-21 20:46:19,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:46:19,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:46:19,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:46:19,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:46:19,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:46:19,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:46:19,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2024-11-21 20:46:19,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:46:19,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:46:19,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:46:19,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:46:19,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:46:19,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:46:19,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:46:19,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:46:19,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-21 20:46:19,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 20:46:19,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 53 [2024-11-21 20:46:19,694 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 7 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:46:19,694 INFO L311 TraceCheckSpWp]: Computing backward predicates...