./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-nonlinear/color-magicseries2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/floats-nonlinear/color-magicseries2.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 f056be744fcae26accb2c049a9cf7a4321bd3ba6c0302870967f442303a6d9cc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 06:26:15,722 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 06:26:15,826 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 06:26:15,832 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 06:26:15,834 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 06:26:15,861 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 06:26:15,861 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 06:26:15,862 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 06:26:15,864 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 06:26:15,867 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 06:26:15,868 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 06:26:15,868 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 06:26:15,869 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 06:26:15,869 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 06:26:15,869 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 06:26:15,870 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 06:26:15,870 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 06:26:15,870 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 06:26:15,872 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 06:26:15,873 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 06:26:15,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 06:26:15,874 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 06:26:15,874 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 06:26:15,874 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 06:26:15,875 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 06:26:15,875 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 06:26:15,875 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 06:26:15,875 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 06:26:15,876 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 06:26:15,876 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 06:26:15,876 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 06:26:15,877 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 06:26:15,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:26:15,877 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 06:26:15,878 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 06:26:15,878 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 06:26:15,879 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 06:26:15,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 06:26:15,879 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 06:26:15,880 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 06:26:15,880 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 06:26:15,881 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 06:26:15,881 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f056be744fcae26accb2c049a9cf7a4321bd3ba6c0302870967f442303a6d9cc [2024-11-16 06:26:16,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 06:26:16,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 06:26:16,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 06:26:16,158 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 06:26:16,159 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 06:26:16,160 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-nonlinear/color-magicseries2.c [2024-11-16 06:26:17,624 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 06:26:17,821 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 06:26:17,822 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-nonlinear/color-magicseries2.c [2024-11-16 06:26:17,829 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26766e6f3/c860f9ffdd6444038137df611af306d3/FLAG14c87bd40 [2024-11-16 06:26:18,201 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26766e6f3/c860f9ffdd6444038137df611af306d3 [2024-11-16 06:26:18,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 06:26:18,205 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 06:26:18,206 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 06:26:18,207 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 06:26:18,211 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 06:26:18,212 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:26:18" (1/1) ... [2024-11-16 06:26:18,212 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b3cd278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:26:18, skipping insertion in model container [2024-11-16 06:26:18,213 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:26:18" (1/1) ... [2024-11-16 06:26:18,230 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 06:26:18,391 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/floats-nonlinear/color-magicseries2.c[613,626] [2024-11-16 06:26:18,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:26:18,443 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 06:26:18,454 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/floats-nonlinear/color-magicseries2.c[613,626] [2024-11-16 06:26:18,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:26:18,490 INFO L204 MainTranslator]: Completed translation [2024-11-16 06:26:18,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:26:18 WrapperNode [2024-11-16 06:26:18,491 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 06:26:18,492 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 06:26:18,493 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 06:26:18,493 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 06:26:18,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:26:18" (1/1) ... [2024-11-16 06:26:18,512 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:26:18" (1/1) ... [2024-11-16 06:26:18,542 INFO L138 Inliner]: procedures = 17, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 140 [2024-11-16 06:26:18,546 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 06:26:18,547 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 06:26:18,547 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 06:26:18,547 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 06:26:18,558 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:26:18" (1/1) ... [2024-11-16 06:26:18,559 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:26:18" (1/1) ... [2024-11-16 06:26:18,563 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:26:18" (1/1) ... [2024-11-16 06:26:18,581 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 4]. The 0 writes are split as follows [0, 0]. [2024-11-16 06:26:18,581 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:26:18" (1/1) ... [2024-11-16 06:26:18,582 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:26:18" (1/1) ... [2024-11-16 06:26:18,587 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:26:18" (1/1) ... [2024-11-16 06:26:18,591 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:26:18" (1/1) ... [2024-11-16 06:26:18,593 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:26:18" (1/1) ... [2024-11-16 06:26:18,593 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:26:18" (1/1) ... [2024-11-16 06:26:18,599 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 06:26:18,600 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 06:26:18,600 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 06:26:18,600 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 06:26:18,601 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:26:18" (1/1) ... [2024-11-16 06:26:18,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:26:18,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:26:18,639 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) [2024-11-16 06:26:18,644 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 [2024-11-16 06:26:18,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 06:26:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 06:26:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 06:26:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 06:26:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure check_domain [2024-11-16 06:26:18,701 INFO L138 BoogieDeclarations]: Found implementation of procedure check_domain [2024-11-16 06:26:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 06:26:18,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 06:26:18,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 06:26:18,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 06:26:18,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 06:26:18,807 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 06:26:18,809 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 06:26:18,993 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L33: call ULTIMATE.dealloc(check_sum_~#s~0#1.base, check_sum_~#s~0#1.offset);havoc check_sum_~#s~0#1.base, check_sum_~#s~0#1.offset; [2024-11-16 06:26:19,025 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2024-11-16 06:26:19,025 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 06:26:19,040 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 06:26:19,041 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 06:26:19,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:26:19 BoogieIcfgContainer [2024-11-16 06:26:19,041 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 06:26:19,044 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 06:26:19,044 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 06:26:19,046 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 06:26:19,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 06:26:18" (1/3) ... [2024-11-16 06:26:19,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a141bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:26:19, skipping insertion in model container [2024-11-16 06:26:19,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:26:18" (2/3) ... [2024-11-16 06:26:19,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a141bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:26:19, skipping insertion in model container [2024-11-16 06:26:19,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:26:19" (3/3) ... [2024-11-16 06:26:19,049 INFO L112 eAbstractionObserver]: Analyzing ICFG color-magicseries2.c [2024-11-16 06:26:19,078 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 06:26:19,079 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 06:26:19,148 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 06:26:19,153 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;@881405c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 06:26:19,153 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 06:26:19,157 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 36 states have internal predecessors, (50), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-16 06:26:19,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-16 06:26:19,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:26:19,163 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:26:19,164 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:26:19,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:26:19,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1472708255, now seen corresponding path program 1 times [2024-11-16 06:26:19,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:26:19,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405904285] [2024-11-16 06:26:19,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:26:19,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:26:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:19,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 06:26:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:19,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:26:19,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:26:19,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405904285] [2024-11-16 06:26:19,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405904285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:26:19,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:26:19,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 06:26:19,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139029915] [2024-11-16 06:26:19,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:26:19,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 06:26:19,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:26:19,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 06:26:19,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 06:26:19,548 INFO L87 Difference]: Start difference. First operand has 42 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 36 states have internal predecessors, (50), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:26:19,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:26:19,611 INFO L93 Difference]: Finished difference Result 80 states and 113 transitions. [2024-11-16 06:26:19,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:26:19,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-16 06:26:19,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:26:19,623 INFO L225 Difference]: With dead ends: 80 [2024-11-16 06:26:19,623 INFO L226 Difference]: Without dead ends: 41 [2024-11-16 06:26:19,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 06:26:19,628 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 195 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 [2024-11-16 06:26:19,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 195 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:26:19,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-16 06:26:19,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-16 06:26:19,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-16 06:26:19,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 57 transitions. [2024-11-16 06:26:19,665 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 57 transitions. Word has length 18 [2024-11-16 06:26:19,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:26:19,665 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 57 transitions. [2024-11-16 06:26:19,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:26:19,666 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 57 transitions. [2024-11-16 06:26:19,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-16 06:26:19,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:26:19,668 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:26:19,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 06:26:19,668 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:26:19,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:26:19,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1811141791, now seen corresponding path program 1 times [2024-11-16 06:26:19,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:26:19,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087643263] [2024-11-16 06:26:19,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:26:19,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:26:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:19,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 06:26:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:19,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:26:19,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:26:19,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087643263] [2024-11-16 06:26:19,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087643263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:26:19,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:26:19,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 06:26:19,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274724774] [2024-11-16 06:26:19,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:26:19,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 06:26:19,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:26:19,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 06:26:19,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:26:19,864 INFO L87 Difference]: Start difference. First operand 41 states and 57 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:26:19,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:26:19,883 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2024-11-16 06:26:19,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 06:26:19,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-16 06:26:19,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:26:19,887 INFO L225 Difference]: With dead ends: 46 [2024-11-16 06:26:19,887 INFO L226 Difference]: Without dead ends: 41 [2024-11-16 06:26:19,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:26:19,889 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:26:19,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 142 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:26:19,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-16 06:26:19,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-16 06:26:19,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 34 states have internal predecessors, (43), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-16 06:26:19,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 55 transitions. [2024-11-16 06:26:19,903 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 55 transitions. Word has length 18 [2024-11-16 06:26:19,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:26:19,903 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 55 transitions. [2024-11-16 06:26:19,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:26:19,904 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 55 transitions. [2024-11-16 06:26:19,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-16 06:26:19,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:26:19,905 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:26:19,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 06:26:19,905 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:26:19,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:26:19,906 INFO L85 PathProgramCache]: Analyzing trace with hash 161788384, now seen corresponding path program 1 times [2024-11-16 06:26:19,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:26:19,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538907073] [2024-11-16 06:26:19,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:26:19,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:26:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:19,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 06:26:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:19,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:26:19,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:26:19,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538907073] [2024-11-16 06:26:19,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538907073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:26:19,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:26:19,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:26:19,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106035907] [2024-11-16 06:26:19,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:26:19,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 06:26:19,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:26:19,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 06:26:19,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:26:19,978 INFO L87 Difference]: Start difference. First operand 41 states and 55 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:26:19,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:26:20,000 INFO L93 Difference]: Finished difference Result 59 states and 77 transitions. [2024-11-16 06:26:20,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 06:26:20,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-16 06:26:20,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:26:20,005 INFO L225 Difference]: With dead ends: 59 [2024-11-16 06:26:20,005 INFO L226 Difference]: Without dead ends: 41 [2024-11-16 06:26:20,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:26:20,007 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:26:20,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:26:20,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-16 06:26:20,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-16 06:26:20,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-16 06:26:20,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2024-11-16 06:26:20,020 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 20 [2024-11-16 06:26:20,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:26:20,021 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2024-11-16 06:26:20,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:26:20,021 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2024-11-16 06:26:20,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-16 06:26:20,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:26:20,024 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:26:20,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 06:26:20,025 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:26:20,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:26:20,025 INFO L85 PathProgramCache]: Analyzing trace with hash -678909165, now seen corresponding path program 1 times [2024-11-16 06:26:20,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:26:20,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091871724] [2024-11-16 06:26:20,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:26:20,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:26:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 06:26:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 06:26:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:26:20,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:26:20,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091871724] [2024-11-16 06:26:20,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091871724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:26:20,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:26:20,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 06:26:20,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987584652] [2024-11-16 06:26:20,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:26:20,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 06:26:20,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:26:20,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 06:26:20,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:26:20,139 INFO L87 Difference]: Start difference. First operand 41 states and 54 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 06:26:20,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:26:20,170 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2024-11-16 06:26:20,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 06:26:20,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2024-11-16 06:26:20,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:26:20,172 INFO L225 Difference]: With dead ends: 69 [2024-11-16 06:26:20,172 INFO L226 Difference]: Without dead ends: 41 [2024-11-16 06:26:20,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:26:20,174 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:26:20,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:26:20,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-16 06:26:20,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-16 06:26:20,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-16 06:26:20,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2024-11-16 06:26:20,183 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 26 [2024-11-16 06:26:20,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:26:20,186 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2024-11-16 06:26:20,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 06:26:20,186 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2024-11-16 06:26:20,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-16 06:26:20,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:26:20,188 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:26:20,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 06:26:20,188 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:26:20,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:26:20,189 INFO L85 PathProgramCache]: Analyzing trace with hash -541973915, now seen corresponding path program 1 times [2024-11-16 06:26:20,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:26:20,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473526967] [2024-11-16 06:26:20,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:26:20,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:26:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 06:26:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 06:26:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-16 06:26:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,258 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:26:20,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:26:20,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473526967] [2024-11-16 06:26:20,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473526967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:26:20,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:26:20,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 06:26:20,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572107819] [2024-11-16 06:26:20,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:26:20,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 06:26:20,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:26:20,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 06:26:20,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:26:20,262 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-16 06:26:20,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:26:20,291 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2024-11-16 06:26:20,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 06:26:20,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2024-11-16 06:26:20,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:26:20,297 INFO L225 Difference]: With dead ends: 73 [2024-11-16 06:26:20,297 INFO L226 Difference]: Without dead ends: 41 [2024-11-16 06:26:20,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:26:20,298 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:26:20,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:26:20,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-16 06:26:20,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2024-11-16 06:26:20,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-16 06:26:20,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2024-11-16 06:26:20,304 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 32 [2024-11-16 06:26:20,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:26:20,305 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2024-11-16 06:26:20,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-16 06:26:20,305 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2024-11-16 06:26:20,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-16 06:26:20,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:26:20,306 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:26:20,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 06:26:20,307 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:26:20,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:26:20,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1720211048, now seen corresponding path program 1 times [2024-11-16 06:26:20,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:26:20,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107841816] [2024-11-16 06:26:20,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:26:20,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:26:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 06:26:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 06:26:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 06:26:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 06:26:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,376 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:26:20,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:26:20,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107841816] [2024-11-16 06:26:20,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107841816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:26:20,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:26:20,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:26:20,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846173528] [2024-11-16 06:26:20,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:26:20,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 06:26:20,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:26:20,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 06:26:20,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:26:20,381 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:26:20,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:26:20,398 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2024-11-16 06:26:20,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 06:26:20,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2024-11-16 06:26:20,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:26:20,401 INFO L225 Difference]: With dead ends: 43 [2024-11-16 06:26:20,402 INFO L226 Difference]: Without dead ends: 37 [2024-11-16 06:26:20,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:26:20,403 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:26:20,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:26:20,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-16 06:26:20,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-16 06:26:20,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-16 06:26:20,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2024-11-16 06:26:20,412 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 38 [2024-11-16 06:26:20,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:26:20,412 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2024-11-16 06:26:20,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:26:20,413 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2024-11-16 06:26:20,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-16 06:26:20,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:26:20,414 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:26:20,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 06:26:20,415 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:26:20,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:26:20,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1165921537, now seen corresponding path program 1 times [2024-11-16 06:26:20,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:26:20,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788755894] [2024-11-16 06:26:20,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:26:20,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:26:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 06:26:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 06:26:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 06:26:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 06:26:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,531 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:26:20,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:26:20,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788755894] [2024-11-16 06:26:20,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788755894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:26:20,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:26:20,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:26:20,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407553331] [2024-11-16 06:26:20,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:26:20,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 06:26:20,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:26:20,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 06:26:20,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:26:20,537 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:26:20,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:26:20,567 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2024-11-16 06:26:20,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 06:26:20,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2024-11-16 06:26:20,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:26:20,569 INFO L225 Difference]: With dead ends: 54 [2024-11-16 06:26:20,569 INFO L226 Difference]: Without dead ends: 46 [2024-11-16 06:26:20,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:26:20,571 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 9 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:26:20,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 74 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:26:20,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-16 06:26:20,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2024-11-16 06:26:20,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-16 06:26:20,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2024-11-16 06:26:20,579 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 42 [2024-11-16 06:26:20,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:26:20,579 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2024-11-16 06:26:20,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:26:20,580 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2024-11-16 06:26:20,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-16 06:26:20,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:26:20,581 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:26:20,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 06:26:20,581 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:26:20,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:26:20,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1336021079, now seen corresponding path program 1 times [2024-11-16 06:26:20,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:26:20,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433103056] [2024-11-16 06:26:20,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:26:20,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:26:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 06:26:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 06:26:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 06:26:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 06:26:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:26:20,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:26:20,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433103056] [2024-11-16 06:26:20,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433103056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:26:20,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:26:20,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:26:20,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116822459] [2024-11-16 06:26:20,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:26:20,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 06:26:20,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:26:20,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 06:26:20,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:26:20,667 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:26:20,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:26:20,689 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2024-11-16 06:26:20,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 06:26:20,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 45 [2024-11-16 06:26:20,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:26:20,692 INFO L225 Difference]: With dead ends: 59 [2024-11-16 06:26:20,692 INFO L226 Difference]: Without dead ends: 43 [2024-11-16 06:26:20,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:26:20,693 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:26:20,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 79 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:26:20,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-16 06:26:20,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2024-11-16 06:26:20,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-16 06:26:20,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2024-11-16 06:26:20,700 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 45 [2024-11-16 06:26:20,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:26:20,700 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2024-11-16 06:26:20,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:26:20,700 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2024-11-16 06:26:20,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 06:26:20,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:26:20,705 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:26:20,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 06:26:20,706 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:26:20,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:26:20,706 INFO L85 PathProgramCache]: Analyzing trace with hash 680017063, now seen corresponding path program 1 times [2024-11-16 06:26:20,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:26:20,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668856379] [2024-11-16 06:26:20,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:26:20,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:26:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 06:26:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 06:26:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 06:26:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 06:26:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,794 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:26:20,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:26:20,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668856379] [2024-11-16 06:26:20,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668856379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:26:20,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443453908] [2024-11-16 06:26:20,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:26:20,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:26:20,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:26:20,798 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) [2024-11-16 06:26:20,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 06:26:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:20,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 06:26:20,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:26:20,980 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:26:20,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:26:21,036 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:26:21,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443453908] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:26:21,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:26:21,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-16 06:26:21,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590817432] [2024-11-16 06:26:21,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:26:21,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 06:26:21,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:26:21,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 06:26:21,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:26:21,039 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:26:21,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:26:21,073 INFO L93 Difference]: Finished difference Result 71 states and 87 transitions. [2024-11-16 06:26:21,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 06:26:21,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2024-11-16 06:26:21,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:26:21,075 INFO L225 Difference]: With dead ends: 71 [2024-11-16 06:26:21,077 INFO L226 Difference]: Without dead ends: 53 [2024-11-16 06:26:21,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:26:21,079 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 11 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:26:21,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 157 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:26:21,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-16 06:26:21,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-16 06:26:21,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 states have internal predecessors, (55), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-16 06:26:21,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2024-11-16 06:26:21,091 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 49 [2024-11-16 06:26:21,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:26:21,092 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2024-11-16 06:26:21,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:26:21,093 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2024-11-16 06:26:21,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-16 06:26:21,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:26:21,094 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:26:21,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 06:26:21,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:26:21,295 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:26:21,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:26:21,295 INFO L85 PathProgramCache]: Analyzing trace with hash -389740127, now seen corresponding path program 2 times [2024-11-16 06:26:21,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:26:21,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380626309] [2024-11-16 06:26:21,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:26:21,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:26:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:21,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 06:26:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:21,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 06:26:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:21,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 06:26:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:21,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 06:26:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:21,422 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-16 06:26:21,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:26:21,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380626309] [2024-11-16 06:26:21,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380626309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:26:21,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:26:21,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 06:26:21,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702215245] [2024-11-16 06:26:21,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:26:21,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 06:26:21,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:26:21,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 06:26:21,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:26:21,424 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:26:21,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:26:21,441 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2024-11-16 06:26:21,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 06:26:21,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2024-11-16 06:26:21,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:26:21,443 INFO L225 Difference]: With dead ends: 60 [2024-11-16 06:26:21,444 INFO L226 Difference]: Without dead ends: 53 [2024-11-16 06:26:21,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:26:21,448 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:26:21,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:26:21,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-16 06:26:21,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-16 06:26:21,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-16 06:26:21,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2024-11-16 06:26:21,453 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 61 [2024-11-16 06:26:21,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:26:21,456 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2024-11-16 06:26:21,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:26:21,456 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2024-11-16 06:26:21,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-16 06:26:21,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:26:21,458 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:26:21,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 06:26:21,458 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:26:21,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:26:21,459 INFO L85 PathProgramCache]: Analyzing trace with hash -321147476, now seen corresponding path program 1 times [2024-11-16 06:26:21,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:26:21,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430610761] [2024-11-16 06:26:21,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:26:21,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:26:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:21,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 06:26:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:21,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 06:26:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:21,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 06:26:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:21,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 06:26:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:21,561 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-16 06:26:21,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:26:21,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430610761] [2024-11-16 06:26:21,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430610761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:26:21,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567447654] [2024-11-16 06:26:21,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:26:21,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:26:21,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:26:21,564 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) [2024-11-16 06:26:21,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 06:26:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:21,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 06:26:21,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:26:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-16 06:26:21,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:26:21,802 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-16 06:26:21,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567447654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:26:21,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:26:21,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-16 06:26:21,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903038120] [2024-11-16 06:26:21,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:26:21,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 06:26:21,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:26:21,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 06:26:21,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:26:21,805 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:26:21,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:26:21,849 INFO L93 Difference]: Finished difference Result 127 states and 153 transitions. [2024-11-16 06:26:21,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 06:26:21,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 64 [2024-11-16 06:26:21,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:26:21,851 INFO L225 Difference]: With dead ends: 127 [2024-11-16 06:26:21,851 INFO L226 Difference]: Without dead ends: 119 [2024-11-16 06:26:21,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:26:21,852 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 19 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:26:21,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 146 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:26:21,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-16 06:26:21,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2024-11-16 06:26:21,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 113 states have (on average 1.1946902654867257) internal successors, (135), 113 states have internal predecessors, (135), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-16 06:26:21,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 143 transitions. [2024-11-16 06:26:21,861 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 143 transitions. Word has length 64 [2024-11-16 06:26:21,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:26:21,862 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 143 transitions. [2024-11-16 06:26:21,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:26:21,862 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 143 transitions. [2024-11-16 06:26:21,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-16 06:26:21,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:26:21,863 INFO L215 NwaCegarLoop]: trace histogram [20, 16, 16, 16, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:26:21,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 06:26:22,064 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,SelfDestructingSolverStorable10 [2024-11-16 06:26:22,064 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:26:22,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:26:22,065 INFO L85 PathProgramCache]: Analyzing trace with hash -374997197, now seen corresponding path program 2 times [2024-11-16 06:26:22,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:26:22,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220129186] [2024-11-16 06:26:22,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:26:22,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:26:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:23,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 06:26:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:23,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 06:26:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:23,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 06:26:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:23,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 06:26:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:23,035 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 343 proven. 123 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-16 06:26:23,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:26:23,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220129186] [2024-11-16 06:26:23,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220129186] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:26:23,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201974080] [2024-11-16 06:26:23,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:26:23,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:26:23,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:26:23,037 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) [2024-11-16 06:26:23,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 06:26:23,170 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:26:23,171 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:26:23,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-16 06:26:23,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:26:23,562 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 289 proven. 48 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2024-11-16 06:26:23,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:26:23,697 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:26:23,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2024-11-16 06:26:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 289 proven. 48 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2024-11-16 06:26:23,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201974080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:26:23,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:26:23,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 12] total 37 [2024-11-16 06:26:23,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401154334] [2024-11-16 06:26:23,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:26:23,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-16 06:26:23,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:26:23,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-16 06:26:23,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2024-11-16 06:26:23,913 INFO L87 Difference]: Start difference. First operand 119 states and 143 transitions. Second operand has 37 states, 37 states have (on average 3.4864864864864864) internal successors, (129), 37 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:26:26,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:26:26,568 INFO L93 Difference]: Finished difference Result 481 states and 599 transitions. [2024-11-16 06:26:26,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-16 06:26:26,569 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.4864864864864864) internal successors, (129), 37 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 130 [2024-11-16 06:26:26,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:26:26,571 INFO L225 Difference]: With dead ends: 481 [2024-11-16 06:26:26,571 INFO L226 Difference]: Without dead ends: 410 [2024-11-16 06:26:26,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3924 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1241, Invalid=10969, Unknown=0, NotChecked=0, Total=12210 [2024-11-16 06:26:26,577 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 447 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 1867 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 1875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 06:26:26,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 1000 Invalid, 1875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1867 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 06:26:26,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2024-11-16 06:26:26,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 305. [2024-11-16 06:26:26,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 299 states have (on average 1.2608695652173914) internal successors, (377), 299 states have internal predecessors, (377), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-16 06:26:26,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 385 transitions. [2024-11-16 06:26:26,612 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 385 transitions. Word has length 130 [2024-11-16 06:26:26,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:26:26,613 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 385 transitions. [2024-11-16 06:26:26,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.4864864864864864) internal successors, (129), 37 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:26:26,614 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 385 transitions. [2024-11-16 06:26:26,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-16 06:26:26,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:26:26,617 INFO L215 NwaCegarLoop]: trace histogram [20, 16, 16, 13, 5, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:26:26,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 06:26:26,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:26:26,821 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:26:26,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:26:26,821 INFO L85 PathProgramCache]: Analyzing trace with hash -586081994, now seen corresponding path program 1 times [2024-11-16 06:26:26,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:26:26,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054197609] [2024-11-16 06:26:26,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:26:26,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:26:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:27,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 06:26:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:27,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 06:26:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:27,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 06:26:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:27,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 06:26:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:27,697 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 309 proven. 247 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-16 06:26:27,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:26:27,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054197609] [2024-11-16 06:26:27,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054197609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:26:27,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638912599] [2024-11-16 06:26:27,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:26:27,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:26:27,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:26:27,700 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) [2024-11-16 06:26:27,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 06:26:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:27,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 06:26:27,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:26:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 348 proven. 129 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-11-16 06:26:28,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:26:28,385 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:26:28,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-11-16 06:26:28,529 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 348 proven. 115 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2024-11-16 06:26:28,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638912599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:26:28,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:26:28,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 10] total 36 [2024-11-16 06:26:28,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725418738] [2024-11-16 06:26:28,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:26:28,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-16 06:26:28,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:26:28,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-16 06:26:28,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1133, Unknown=0, NotChecked=0, Total=1260 [2024-11-16 06:26:28,533 INFO L87 Difference]: Start difference. First operand 305 states and 385 transitions. Second operand has 36 states, 36 states have (on average 3.9444444444444446) internal successors, (142), 36 states have internal predecessors, (142), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:26:31,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:26:31,963 INFO L93 Difference]: Finished difference Result 951 states and 1168 transitions. [2024-11-16 06:26:31,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-11-16 06:26:31,964 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.9444444444444446) internal successors, (142), 36 states have internal predecessors, (142), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 130 [2024-11-16 06:26:31,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:26:31,968 INFO L225 Difference]: With dead ends: 951 [2024-11-16 06:26:31,968 INFO L226 Difference]: Without dead ends: 793 [2024-11-16 06:26:31,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6888 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1391, Invalid=19201, Unknown=0, NotChecked=0, Total=20592 [2024-11-16 06:26:31,974 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 204 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 2894 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:26:31,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 1095 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2894 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 06:26:31,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2024-11-16 06:26:32,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 686. [2024-11-16 06:26:32,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 680 states have (on average 1.238235294117647) internal successors, (842), 680 states have internal predecessors, (842), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-16 06:26:32,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 850 transitions. [2024-11-16 06:26:32,014 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 850 transitions. Word has length 130 [2024-11-16 06:26:32,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:26:32,014 INFO L471 AbstractCegarLoop]: Abstraction has 686 states and 850 transitions. [2024-11-16 06:26:32,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.9444444444444446) internal successors, (142), 36 states have internal predecessors, (142), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:26:32,014 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 850 transitions. [2024-11-16 06:26:32,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-16 06:26:32,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:26:32,017 INFO L215 NwaCegarLoop]: trace histogram [20, 16, 16, 11, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:26:32,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 06:26:32,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:26:32,221 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:26:32,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:26:32,221 INFO L85 PathProgramCache]: Analyzing trace with hash -465014536, now seen corresponding path program 2 times [2024-11-16 06:26:32,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:26:32,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906721510] [2024-11-16 06:26:32,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:26:32,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:26:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:32,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 06:26:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:32,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 06:26:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:32,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 06:26:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:32,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 06:26:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:32,852 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 153 proven. 435 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-16 06:26:32,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:26:32,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906721510] [2024-11-16 06:26:32,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906721510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:26:32,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151230223] [2024-11-16 06:26:32,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:26:32,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:26:32,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:26:32,855 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) [2024-11-16 06:26:32,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 06:26:32,979 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:26:32,979 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:26:32,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-16 06:26:32,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:26:33,359 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 335 proven. 193 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-16 06:26:33,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:26:33,524 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-16 06:26:33,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 14 [2024-11-16 06:26:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 458 proven. 54 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-16 06:26:33,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151230223] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:26:33,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:26:33,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 10] total 35 [2024-11-16 06:26:33,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478673243] [2024-11-16 06:26:33,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:26:33,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-16 06:26:33,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:26:33,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-16 06:26:33,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1074, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 06:26:33,593 INFO L87 Difference]: Start difference. First operand 686 states and 850 transitions. Second operand has 35 states, 35 states have (on average 4.571428571428571) internal successors, (160), 35 states have internal predecessors, (160), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:26:35,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:26:35,813 INFO L93 Difference]: Finished difference Result 2172 states and 2679 transitions. [2024-11-16 06:26:35,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-16 06:26:35,814 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.571428571428571) internal successors, (160), 35 states have internal predecessors, (160), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 130 [2024-11-16 06:26:35,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:26:35,821 INFO L225 Difference]: With dead ends: 2172 [2024-11-16 06:26:35,821 INFO L226 Difference]: Without dead ends: 1758 [2024-11-16 06:26:35,826 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3853 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1043, Invalid=10729, Unknown=0, NotChecked=0, Total=11772 [2024-11-16 06:26:35,827 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 218 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 06:26:35,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 1136 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 06:26:35,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2024-11-16 06:26:35,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1383. [2024-11-16 06:26:35,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1377 states have (on average 1.2265795206971677) internal successors, (1689), 1377 states have internal predecessors, (1689), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-16 06:26:35,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1697 transitions. [2024-11-16 06:26:35,902 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1697 transitions. Word has length 130 [2024-11-16 06:26:35,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:26:35,903 INFO L471 AbstractCegarLoop]: Abstraction has 1383 states and 1697 transitions. [2024-11-16 06:26:35,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.571428571428571) internal successors, (160), 35 states have internal predecessors, (160), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:26:35,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1697 transitions. [2024-11-16 06:26:35,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-16 06:26:35,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:26:35,910 INFO L215 NwaCegarLoop]: trace histogram [20, 16, 16, 9, 7, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:26:35,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 06:26:36,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-16 06:26:36,114 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:26:36,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:26:36,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1654128388, now seen corresponding path program 3 times [2024-11-16 06:26:36,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:26:36,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654481583] [2024-11-16 06:26:36,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:26:36,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:26:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:36,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 06:26:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:36,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 06:26:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:36,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 06:26:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:36,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 06:26:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:36,832 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 8 proven. 567 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-16 06:26:36,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:26:36,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654481583] [2024-11-16 06:26:36,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654481583] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:26:36,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259122811] [2024-11-16 06:26:36,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:26:36,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:26:36,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:26:36,835 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:26:36,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 06:26:36,942 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-16 06:26:36,942 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:26:36,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 06:26:36,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:26:37,377 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:26:37,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 06:26:37,568 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 9 proven. 149 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-11-16 06:26:37,568 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:26:37,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 06:26:38,679 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 12 proven. 149 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2024-11-16 06:26:38,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259122811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:26:38,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:26:38,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 17] total 39 [2024-11-16 06:26:38,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516088092] [2024-11-16 06:26:38,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:26:38,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-16 06:26:38,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:26:38,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-16 06:26:38,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1306, Unknown=0, NotChecked=0, Total=1482 [2024-11-16 06:26:38,682 INFO L87 Difference]: Start difference. First operand 1383 states and 1697 transitions. Second operand has 39 states, 39 states have (on average 3.7948717948717947) internal successors, (148), 39 states have internal predecessors, (148), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-16 06:26:42,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:26:42,311 INFO L93 Difference]: Finished difference Result 3741 states and 4592 transitions. [2024-11-16 06:26:42,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2024-11-16 06:26:42,312 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.7948717948717947) internal successors, (148), 39 states have internal predecessors, (148), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 130 [2024-11-16 06:26:42,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:26:42,325 INFO L225 Difference]: With dead ends: 3741 [2024-11-16 06:26:42,325 INFO L226 Difference]: Without dead ends: 3625 [2024-11-16 06:26:42,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 246 SyntacticMatches, 2 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6716 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2469, Invalid=17271, Unknown=0, NotChecked=0, Total=19740 [2024-11-16 06:26:42,330 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 197 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 2618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:26:42,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1271 Invalid, 2618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 06:26:42,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3625 states. [2024-11-16 06:26:42,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3625 to 3248. [2024-11-16 06:26:42,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3248 states, 3239 states have (on average 1.2241432540907689) internal successors, (3965), 3239 states have internal predecessors, (3965), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-16 06:26:42,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3248 states to 3248 states and 3983 transitions. [2024-11-16 06:26:42,570 INFO L78 Accepts]: Start accepts. Automaton has 3248 states and 3983 transitions. Word has length 130 [2024-11-16 06:26:42,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:26:42,570 INFO L471 AbstractCegarLoop]: Abstraction has 3248 states and 3983 transitions. [2024-11-16 06:26:42,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.7948717948717947) internal successors, (148), 39 states have internal predecessors, (148), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-16 06:26:42,571 INFO L276 IsEmpty]: Start isEmpty. Operand 3248 states and 3983 transitions. [2024-11-16 06:26:42,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-16 06:26:42,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:26:42,578 INFO L215 NwaCegarLoop]: trace histogram [20, 16, 16, 10, 6, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:26:42,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 06:26:42,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-16 06:26:42,783 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:26:42,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:26:42,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1796367037, now seen corresponding path program 4 times [2024-11-16 06:26:42,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:26:42,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706657126] [2024-11-16 06:26:42,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:26:42,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:26:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:43,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 06:26:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:43,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 06:26:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:43,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 06:26:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:43,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 06:26:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 270 proven. 22 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2024-11-16 06:26:43,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:26:43,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706657126] [2024-11-16 06:26:43,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706657126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:26:43,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823450714] [2024-11-16 06:26:43,297 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:26:43,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:26:43,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:26:43,299 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:26:43,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 06:26:43,478 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:26:43,478 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:26:43,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 06:26:43,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:26:43,640 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 21 treesize of output 9 [2024-11-16 06:26:43,654 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 444 proven. 70 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-16 06:26:43,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:26:43,815 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-16 06:26:43,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 9 [2024-11-16 06:26:43,834 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 393 proven. 121 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-16 06:26:43,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823450714] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:26:43,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:26:43,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2024-11-16 06:26:43,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488959879] [2024-11-16 06:26:43,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:26:43,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 06:26:43,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:26:43,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 06:26:43,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2024-11-16 06:26:43,836 INFO L87 Difference]: Start difference. First operand 3248 states and 3983 transitions. Second operand has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:26:44,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:26:44,476 INFO L93 Difference]: Finished difference Result 6167 states and 7548 transitions. [2024-11-16 06:26:44,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-16 06:26:44,477 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 130 [2024-11-16 06:26:44,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:26:44,492 INFO L225 Difference]: With dead ends: 6167 [2024-11-16 06:26:44,492 INFO L226 Difference]: Without dead ends: 3819 [2024-11-16 06:26:44,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 252 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=293, Invalid=1869, Unknown=0, NotChecked=0, Total=2162 [2024-11-16 06:26:44,498 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 105 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:26:44,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 591 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:26:44,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3819 states. [2024-11-16 06:26:44,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3819 to 2458. [2024-11-16 06:26:44,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2458 states, 2449 states have (on average 1.2351980400163332) internal successors, (3025), 2449 states have internal predecessors, (3025), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-16 06:26:44,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2458 states to 2458 states and 3043 transitions. [2024-11-16 06:26:44,704 INFO L78 Accepts]: Start accepts. Automaton has 2458 states and 3043 transitions. Word has length 130 [2024-11-16 06:26:44,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:26:44,704 INFO L471 AbstractCegarLoop]: Abstraction has 2458 states and 3043 transitions. [2024-11-16 06:26:44,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:26:44,705 INFO L276 IsEmpty]: Start isEmpty. Operand 2458 states and 3043 transitions. [2024-11-16 06:26:44,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-16 06:26:44,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:26:44,710 INFO L215 NwaCegarLoop]: trace histogram [20, 16, 16, 11, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:26:44,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 06:26:44,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:26:44,915 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:26:44,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:26:44,915 INFO L85 PathProgramCache]: Analyzing trace with hash -338368578, now seen corresponding path program 5 times [2024-11-16 06:26:44,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:26:44,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967202036] [2024-11-16 06:26:44,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:26:44,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:26:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:45,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 06:26:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:45,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 06:26:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:45,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 06:26:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:45,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 06:26:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:26:45,458 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 349 proven. 143 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-16 06:26:45,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:26:45,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967202036] [2024-11-16 06:26:45,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967202036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:26:45,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884182011] [2024-11-16 06:26:45,459 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:26:45,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:26:45,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:26:45,461 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:26:45,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 06:26:45,569 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-16 06:26:45,569 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:26:45,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-16 06:26:45,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:26:45,932 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 21 treesize of output 9 [2024-11-16 06:26:45,954 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 463 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-16 06:26:45,954 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:26:46,359 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 451 proven. 90 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-16 06:26:46,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884182011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:26:46,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:26:46,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 14] total 36 [2024-11-16 06:26:46,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962387090] [2024-11-16 06:26:46,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:26:46,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-16 06:26:46,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:26:46,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-16 06:26:46,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1082, Unknown=0, NotChecked=0, Total=1260 [2024-11-16 06:26:46,361 INFO L87 Difference]: Start difference. First operand 2458 states and 3043 transitions. Second operand has 36 states, 36 states have (on average 4.083333333333333) internal successors, (147), 36 states have internal predecessors, (147), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:26:51,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 06:26:57,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 06:26:58,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 06:27:02,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:27:02,641 INFO L93 Difference]: Finished difference Result 14343 states and 17750 transitions. [2024-11-16 06:27:02,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2024-11-16 06:27:02,642 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.083333333333333) internal successors, (147), 36 states have internal predecessors, (147), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 130 [2024-11-16 06:27:02,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:27:02,682 INFO L225 Difference]: With dead ends: 14343 [2024-11-16 06:27:02,682 INFO L226 Difference]: Without dead ends: 12781 [2024-11-16 06:27:02,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 245 SyntacticMatches, 5 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25490 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=6057, Invalid=55695, Unknown=0, NotChecked=0, Total=61752 [2024-11-16 06:27:02,693 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 228 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 1915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2024-11-16 06:27:02,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1036 Invalid, 1915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1877 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2024-11-16 06:27:02,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12781 states. [2024-11-16 06:27:03,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12781 to 5228. [2024-11-16 06:27:03,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5228 states, 5219 states have (on average 1.219965510634221) internal successors, (6367), 5219 states have internal predecessors, (6367), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-16 06:27:03,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5228 states to 5228 states and 6385 transitions. [2024-11-16 06:27:03,311 INFO L78 Accepts]: Start accepts. Automaton has 5228 states and 6385 transitions. Word has length 130 [2024-11-16 06:27:03,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:27:03,311 INFO L471 AbstractCegarLoop]: Abstraction has 5228 states and 6385 transitions. [2024-11-16 06:27:03,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.083333333333333) internal successors, (147), 36 states have internal predecessors, (147), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 06:27:03,312 INFO L276 IsEmpty]: Start isEmpty. Operand 5228 states and 6385 transitions. [2024-11-16 06:27:03,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-16 06:27:03,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:27:03,323 INFO L215 NwaCegarLoop]: trace histogram [20, 16, 16, 13, 5, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:27:03,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-16 06:27:03,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-16 06:27:03,524 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:27:03,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:27:03,524 INFO L85 PathProgramCache]: Analyzing trace with hash 2013179072, now seen corresponding path program 6 times [2024-11-16 06:27:03,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:27:03,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916146197] [2024-11-16 06:27:03,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:27:03,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:27:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:27:04,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 06:27:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:27:04,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 06:27:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:27:04,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 06:27:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:27:04,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 06:27:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:27:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 263 proven. 38 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2024-11-16 06:27:04,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:27:04,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916146197] [2024-11-16 06:27:04,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916146197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:27:04,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719219744] [2024-11-16 06:27:04,463 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 06:27:04,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:27:04,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:27:04,465 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:27:04,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 06:27:04,601 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-16 06:27:04,601 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:27:04,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-16 06:27:04,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:27:05,638 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:27:05,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 39 [2024-11-16 06:27:05,707 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 190 proven. 301 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2024-11-16 06:27:05,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:27:06,322 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:27:06,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 16 [2024-11-16 06:27:06,370 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 142 proven. 359 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-16 06:27:06,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719219744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:27:06,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:27:06,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 16] total 46 [2024-11-16 06:27:06,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457990498] [2024-11-16 06:27:06,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:27:06,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-16 06:27:06,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:27:06,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-16 06:27:06,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1867, Unknown=0, NotChecked=0, Total=2070 [2024-11-16 06:27:06,373 INFO L87 Difference]: Start difference. First operand 5228 states and 6385 transitions. Second operand has 46 states, 46 states have (on average 3.217391304347826) internal successors, (148), 46 states have internal predecessors, (148), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 06:27:13,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 06:27:16,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 06:27:18,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:27:18,564 INFO L93 Difference]: Finished difference Result 16790 states and 20938 transitions. [2024-11-16 06:27:18,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-11-16 06:27:18,565 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.217391304347826) internal successors, (148), 46 states have internal predecessors, (148), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 130 [2024-11-16 06:27:18,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:27:18,605 INFO L225 Difference]: With dead ends: 16790 [2024-11-16 06:27:18,606 INFO L226 Difference]: Without dead ends: 16022 [2024-11-16 06:27:18,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7861 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=3807, Invalid=21953, Unknown=0, NotChecked=0, Total=25760 [2024-11-16 06:27:18,613 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 472 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 125 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-16 06:27:18,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 988 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1424 Invalid, 2 Unknown, 0 Unchecked, 5.7s Time] [2024-11-16 06:27:18,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16022 states. [2024-11-16 06:27:19,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16022 to 12564. [2024-11-16 06:27:19,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12564 states, 12555 states have (on average 1.2569494225408204) internal successors, (15781), 12554 states have internal predecessors, (15781), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-16 06:27:19,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12564 states to 12564 states and 15799 transitions. [2024-11-16 06:27:19,873 INFO L78 Accepts]: Start accepts. Automaton has 12564 states and 15799 transitions. Word has length 130 [2024-11-16 06:27:19,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:27:19,875 INFO L471 AbstractCegarLoop]: Abstraction has 12564 states and 15799 transitions. [2024-11-16 06:27:19,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.217391304347826) internal successors, (148), 46 states have internal predecessors, (148), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 06:27:19,876 INFO L276 IsEmpty]: Start isEmpty. Operand 12564 states and 15799 transitions. [2024-11-16 06:27:19,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-16 06:27:19,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:27:19,907 INFO L215 NwaCegarLoop]: trace histogram [20, 16, 16, 10, 6, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:27:19,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 06:27:20,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 06:27:20,112 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:27:20,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:27:20,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1306912195, now seen corresponding path program 7 times [2024-11-16 06:27:20,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:27:20,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404294294] [2024-11-16 06:27:20,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:27:20,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:27:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:27:20,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 06:27:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:27:20,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 06:27:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:27:20,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 06:27:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:27:20,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 06:27:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:27:20,840 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 297 proven. 250 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-16 06:27:20,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:27:20,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404294294] [2024-11-16 06:27:20,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404294294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:27:20,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753375500] [2024-11-16 06:27:20,841 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 06:27:20,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:27:20,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:27:20,843 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:27:20,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 06:27:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:27:20,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-16 06:27:20,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:27:21,625 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 67 proven. 551 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-16 06:27:21,626 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:27:21,832 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-16 06:27:21,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 14 [2024-11-16 06:27:21,947 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 378 proven. 120 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2024-11-16 06:27:21,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753375500] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:27:21,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:27:21,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20, 14] total 46 [2024-11-16 06:27:21,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485608754] [2024-11-16 06:27:21,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:27:21,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-16 06:27:21,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:27:21,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-16 06:27:21,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1890, Unknown=0, NotChecked=0, Total=2070 [2024-11-16 06:27:21,949 INFO L87 Difference]: Start difference. First operand 12564 states and 15799 transitions. Second operand has 46 states, 46 states have (on average 4.282608695652174) internal successors, (197), 46 states have internal predecessors, (197), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 06:27:30,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:27:30,367 INFO L93 Difference]: Finished difference Result 45166 states and 57013 transitions. [2024-11-16 06:27:30,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2024-11-16 06:27:30,368 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.282608695652174) internal successors, (197), 46 states have internal predecessors, (197), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 130 [2024-11-16 06:27:30,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:27:30,465 INFO L225 Difference]: With dead ends: 45166 [2024-11-16 06:27:30,465 INFO L226 Difference]: Without dead ends: 40348 [2024-11-16 06:27:30,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7339 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1546, Invalid=21104, Unknown=0, NotChecked=0, Total=22650 [2024-11-16 06:27:30,484 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 248 mSDsluCounter, 2325 mSDsCounter, 0 mSdLazyCounter, 6475 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 6500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 6475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-16 06:27:30,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 2424 Invalid, 6500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 6475 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-16 06:27:30,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40348 states. [2024-11-16 06:27:33,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40348 to 25018. [2024-11-16 06:27:33,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25018 states, 25007 states have (on average 1.2650857759827248) internal successors, (31636), 25003 states have internal predecessors, (31636), 8 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (16), 13 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-16 06:27:33,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25018 states to 25018 states and 31660 transitions. [2024-11-16 06:27:33,911 INFO L78 Accepts]: Start accepts. Automaton has 25018 states and 31660 transitions. Word has length 130 [2024-11-16 06:27:33,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:27:33,912 INFO L471 AbstractCegarLoop]: Abstraction has 25018 states and 31660 transitions. [2024-11-16 06:27:33,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.282608695652174) internal successors, (197), 46 states have internal predecessors, (197), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 06:27:33,912 INFO L276 IsEmpty]: Start isEmpty. Operand 25018 states and 31660 transitions. [2024-11-16 06:27:33,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-16 06:27:33,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:27:33,944 INFO L215 NwaCegarLoop]: trace histogram [20, 16, 16, 12, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:27:33,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-16 06:27:34,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:27:34,149 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:27:34,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:27:34,149 INFO L85 PathProgramCache]: Analyzing trace with hash 530405375, now seen corresponding path program 8 times [2024-11-16 06:27:34,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:27:34,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783063853] [2024-11-16 06:27:34,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:27:34,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:27:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:27:34,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 06:27:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:27:34,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 06:27:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:27:34,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 06:27:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:27:34,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 06:27:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:27:34,606 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 315 proven. 246 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-16 06:27:34,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:27:34,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783063853] [2024-11-16 06:27:34,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783063853] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:27:34,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45319542] [2024-11-16 06:27:34,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:27:34,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:27:34,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:27:34,609 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:27:34,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 06:27:34,734 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:27:34,734 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:27:34,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 06:27:34,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:27:35,180 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 229 proven. 332 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-16 06:27:35,181 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:27:35,347 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:27:35,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2024-11-16 06:27:35,452 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 229 proven. 332 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-16 06:27:35,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45319542] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:27:35,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:27:35,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 30 [2024-11-16 06:27:35,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093304200] [2024-11-16 06:27:35,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:27:35,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-16 06:27:35,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:27:35,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-16 06:27:35,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2024-11-16 06:27:35,455 INFO L87 Difference]: Start difference. First operand 25018 states and 31660 transitions. Second operand has 30 states, 30 states have (on average 5.1) internal successors, (153), 30 states have internal predecessors, (153), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)