./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label23.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/eca-rers2012/Problem13_label23.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 adf96f71bf2a13ae5fd22bce01b9c481e5a9d21572a73a17cea58c8fcaecb44e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 03:59:55,340 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 03:59:55,400 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 03:59:55,405 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 03:59:55,406 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 03:59:55,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 03:59:55,433 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 03:59:55,433 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 03:59:55,434 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 03:59:55,435 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 03:59:55,435 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 03:59:55,436 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 03:59:55,436 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 03:59:55,438 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 03:59:55,438 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 03:59:55,438 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 03:59:55,438 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 03:59:55,439 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 03:59:55,439 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 03:59:55,439 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 03:59:55,439 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 03:59:55,440 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 03:59:55,442 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 03:59:55,443 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 03:59:55,443 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 03:59:55,443 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 03:59:55,443 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 03:59:55,443 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 03:59:55,444 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 03:59:55,444 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 03:59:55,444 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 03:59:55,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 03:59:55,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:59:55,444 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 03:59:55,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 03:59:55,445 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 03:59:55,445 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 03:59:55,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 03:59:55,445 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 03:59:55,445 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 03:59:55,445 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 03:59:55,446 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 03:59:55,446 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adf96f71bf2a13ae5fd22bce01b9c481e5a9d21572a73a17cea58c8fcaecb44e [2024-11-16 03:59:55,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 03:59:55,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 03:59:55,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 03:59:55,705 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 03:59:55,705 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 03:59:55,706 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label23.c [2024-11-16 03:59:57,091 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 03:59:57,494 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 03:59:57,495 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label23.c [2024-11-16 03:59:57,518 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91fc9d752/7d56197e1d9b4d32a0f1054fc67b4f21/FLAG31ab7bc5e [2024-11-16 03:59:57,553 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91fc9d752/7d56197e1d9b4d32a0f1054fc67b4f21 [2024-11-16 03:59:57,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 03:59:57,558 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 03:59:57,560 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 03:59:57,561 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 03:59:57,565 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 03:59:57,567 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:59:57" (1/1) ... [2024-11-16 03:59:57,568 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e069b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:57, skipping insertion in model container [2024-11-16 03:59:57,568 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:59:57" (1/1) ... [2024-11-16 03:59:57,662 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 03:59:57,856 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/eca-rers2012/Problem13_label23.c[2192,2205] [2024-11-16 03:59:58,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:59:58,527 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 03:59:58,540 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/eca-rers2012/Problem13_label23.c[2192,2205] [2024-11-16 03:59:59,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:59:59,158 INFO L204 MainTranslator]: Completed translation [2024-11-16 03:59:59,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:59 WrapperNode [2024-11-16 03:59:59,159 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 03:59:59,160 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 03:59:59,163 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 03:59:59,163 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 03:59:59,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:59" (1/1) ... [2024-11-16 03:59:59,220 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:59" (1/1) ... [2024-11-16 03:59:59,710 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-11-16 03:59:59,711 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 03:59:59,711 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 03:59:59,712 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 03:59:59,712 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 03:59:59,734 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:59" (1/1) ... [2024-11-16 03:59:59,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:59" (1/1) ... [2024-11-16 03:59:59,892 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:59" (1/1) ... [2024-11-16 04:00:00,152 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 04:00:00,152 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:59" (1/1) ... [2024-11-16 04:00:00,152 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:59" (1/1) ... [2024-11-16 04:00:00,305 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:59" (1/1) ... [2024-11-16 04:00:00,323 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:59" (1/1) ... [2024-11-16 04:00:00,343 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:59" (1/1) ... [2024-11-16 04:00:00,362 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:59" (1/1) ... [2024-11-16 04:00:00,425 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 04:00:00,427 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 04:00:00,427 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 04:00:00,427 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 04:00:00,428 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:59" (1/1) ... [2024-11-16 04:00:00,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:00:00,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:00:00,465 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 04:00:00,475 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 04:00:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 04:00:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 04:00:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 04:00:00,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 04:00:00,657 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 04:00:00,659 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 04:00:05,009 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1894: havoc calculate_output_#t~ret9#1; [2024-11-16 04:00:05,009 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3629: havoc calculate_output2_#t~ret10#1; [2024-11-16 04:00:05,011 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L5351: havoc calculate_output3_#t~ret11#1; [2024-11-16 04:00:05,188 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-16 04:00:05,188 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 04:00:05,230 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 04:00:05,230 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 04:00:05,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:00:05 BoogieIcfgContainer [2024-11-16 04:00:05,231 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 04:00:05,233 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 04:00:05,233 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 04:00:05,236 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 04:00:05,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:59:57" (1/3) ... [2024-11-16 04:00:05,237 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461f50d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:00:05, skipping insertion in model container [2024-11-16 04:00:05,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:59" (2/3) ... [2024-11-16 04:00:05,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461f50d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:00:05, skipping insertion in model container [2024-11-16 04:00:05,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:00:05" (3/3) ... [2024-11-16 04:00:05,240 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label23.c [2024-11-16 04:00:05,255 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 04:00:05,256 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 04:00:05,359 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 04:00:05,365 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;@309f85b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 04:00:05,366 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 04:00:05,376 INFO L276 IsEmpty]: Start isEmpty. Operand has 1101 states, 1099 states have (on average 1.8252957233848954) internal successors, (2006), 1100 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:05,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-16 04:00:05,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:05,382 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:00:05,383 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:05,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:05,388 INFO L85 PathProgramCache]: Analyzing trace with hash -2043483357, now seen corresponding path program 1 times [2024-11-16 04:00:05,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:05,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125576124] [2024-11-16 04:00:05,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:05,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:05,635 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 04:00:05,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:05,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125576124] [2024-11-16 04:00:05,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125576124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:05,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:00:05,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:00:05,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558042409] [2024-11-16 04:00:05,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:05,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:05,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:05,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:05,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:00:05,667 INFO L87 Difference]: Start difference. First operand has 1101 states, 1099 states have (on average 1.8252957233848954) internal successors, (2006), 1100 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:09,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:09,987 INFO L93 Difference]: Finished difference Result 3166 states and 5849 transitions. [2024-11-16 04:00:09,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:09,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-16 04:00:09,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:10,010 INFO L225 Difference]: With dead ends: 3166 [2024-11-16 04:00:10,011 INFO L226 Difference]: Without dead ends: 1986 [2024-11-16 04:00:10,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 04:00:10,020 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 1090 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:10,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 353 Invalid, 4004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [974 Valid, 3030 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-16 04:00:10,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2024-11-16 04:00:10,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1933. [2024-11-16 04:00:10,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1932 states have (on average 1.7960662525879918) internal successors, (3470), 1932 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:10,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 3470 transitions. [2024-11-16 04:00:10,143 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 3470 transitions. Word has length 15 [2024-11-16 04:00:10,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:10,143 INFO L471 AbstractCegarLoop]: Abstraction has 1933 states and 3470 transitions. [2024-11-16 04:00:10,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:10,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 3470 transitions. [2024-11-16 04:00:10,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-16 04:00:10,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:10,149 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:00:10,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 04:00:10,149 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:10,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:10,150 INFO L85 PathProgramCache]: Analyzing trace with hash 293912285, now seen corresponding path program 1 times [2024-11-16 04:00:10,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:10,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759521499] [2024-11-16 04:00:10,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:10,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:10,432 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:00:10,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:10,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759521499] [2024-11-16 04:00:10,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759521499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:10,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:00:10,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:00:10,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196821123] [2024-11-16 04:00:10,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:10,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:10,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:10,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:10,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:00:10,439 INFO L87 Difference]: Start difference. First operand 1933 states and 3470 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:14,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:14,004 INFO L93 Difference]: Finished difference Result 4725 states and 8530 transitions. [2024-11-16 04:00:14,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:14,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-16 04:00:14,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:14,013 INFO L225 Difference]: With dead ends: 4725 [2024-11-16 04:00:14,013 INFO L226 Difference]: Without dead ends: 2794 [2024-11-16 04:00:14,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 04:00:14,019 INFO L432 NwaCegarLoop]: 603 mSDtfsCounter, 815 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 3015 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 3316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 3015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:14,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 741 Invalid, 3316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 3015 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-16 04:00:14,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2024-11-16 04:00:14,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 2733. [2024-11-16 04:00:14,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2732 states have (on average 1.699121522693997) internal successors, (4642), 2732 states have internal predecessors, (4642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4642 transitions. [2024-11-16 04:00:14,064 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4642 transitions. Word has length 81 [2024-11-16 04:00:14,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:14,065 INFO L471 AbstractCegarLoop]: Abstraction has 2733 states and 4642 transitions. [2024-11-16 04:00:14,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:14,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4642 transitions. [2024-11-16 04:00:14,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-16 04:00:14,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:14,071 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:00:14,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 04:00:14,071 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:14,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:14,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1343910030, now seen corresponding path program 1 times [2024-11-16 04:00:14,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:14,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901601500] [2024-11-16 04:00:14,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:14,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:14,226 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:00:14,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:14,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901601500] [2024-11-16 04:00:14,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901601500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:14,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:00:14,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:00:14,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289560123] [2024-11-16 04:00:14,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:14,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:14,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:14,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:14,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:00:14,231 INFO L87 Difference]: Start difference. First operand 2733 states and 4642 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:17,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:17,449 INFO L93 Difference]: Finished difference Result 7873 states and 13461 transitions. [2024-11-16 04:00:17,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:17,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-11-16 04:00:17,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:17,466 INFO L225 Difference]: With dead ends: 7873 [2024-11-16 04:00:17,467 INFO L226 Difference]: Without dead ends: 5142 [2024-11-16 04:00:17,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 04:00:17,473 INFO L432 NwaCegarLoop]: 881 mSDtfsCounter, 938 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2603 mSolverCounterSat, 749 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 3352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 749 IncrementalHoareTripleChecker+Valid, 2603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:17,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 1018 Invalid, 3352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [749 Valid, 2603 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-16 04:00:17,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5142 states. [2024-11-16 04:00:17,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5142 to 5134. [2024-11-16 04:00:17,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5134 states, 5133 states have (on average 1.532437171244886) internal successors, (7866), 5133 states have internal predecessors, (7866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:17,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5134 states to 5134 states and 7866 transitions. [2024-11-16 04:00:17,548 INFO L78 Accepts]: Start accepts. Automaton has 5134 states and 7866 transitions. Word has length 87 [2024-11-16 04:00:17,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:17,550 INFO L471 AbstractCegarLoop]: Abstraction has 5134 states and 7866 transitions. [2024-11-16 04:00:17,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:17,551 INFO L276 IsEmpty]: Start isEmpty. Operand 5134 states and 7866 transitions. [2024-11-16 04:00:17,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-16 04:00:17,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:17,554 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:00:17,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 04:00:17,554 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:17,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:17,554 INFO L85 PathProgramCache]: Analyzing trace with hash -738549608, now seen corresponding path program 1 times [2024-11-16 04:00:17,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:17,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822058468] [2024-11-16 04:00:17,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:17,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:00:17,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:17,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822058468] [2024-11-16 04:00:17,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822058468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:17,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:00:17,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:00:17,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143820877] [2024-11-16 04:00:17,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:17,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:17,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:17,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:17,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:00:17,694 INFO L87 Difference]: Start difference. First operand 5134 states and 7866 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:20,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:20,824 INFO L93 Difference]: Finished difference Result 15008 states and 23050 transitions. [2024-11-16 04:00:20,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:20,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2024-11-16 04:00:20,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:20,849 INFO L225 Difference]: With dead ends: 15008 [2024-11-16 04:00:20,849 INFO L226 Difference]: Without dead ends: 9876 [2024-11-16 04:00:20,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:00:20,857 INFO L432 NwaCegarLoop]: 1862 mSDtfsCounter, 935 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 3289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:20,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 2010 Invalid, 3289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2482 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-16 04:00:20,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9876 states. [2024-11-16 04:00:20,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9876 to 9871. [2024-11-16 04:00:20,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9871 states, 9870 states have (on average 1.399594731509625) internal successors, (13814), 9870 states have internal predecessors, (13814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:20,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9871 states to 9871 states and 13814 transitions. [2024-11-16 04:00:20,977 INFO L78 Accepts]: Start accepts. Automaton has 9871 states and 13814 transitions. Word has length 127 [2024-11-16 04:00:20,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:20,979 INFO L471 AbstractCegarLoop]: Abstraction has 9871 states and 13814 transitions. [2024-11-16 04:00:20,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:20,979 INFO L276 IsEmpty]: Start isEmpty. Operand 9871 states and 13814 transitions. [2024-11-16 04:00:20,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-16 04:00:20,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:20,981 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:20,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 04:00:20,981 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:20,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:20,981 INFO L85 PathProgramCache]: Analyzing trace with hash 973537070, now seen corresponding path program 1 times [2024-11-16 04:00:20,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:20,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342501658] [2024-11-16 04:00:20,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:20,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:21,328 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:00:21,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:21,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342501658] [2024-11-16 04:00:21,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342501658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:21,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:00:21,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:00:21,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009233795] [2024-11-16 04:00:21,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:21,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:00:21,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:21,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:00:21,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:00:21,333 INFO L87 Difference]: Start difference. First operand 9871 states and 13814 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:25,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:25,524 INFO L93 Difference]: Finished difference Result 17356 states and 24607 transitions. [2024-11-16 04:00:25,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:00:25,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2024-11-16 04:00:25,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:25,544 INFO L225 Difference]: With dead ends: 17356 [2024-11-16 04:00:25,544 INFO L226 Difference]: Without dead ends: 7487 [2024-11-16 04:00:25,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 04:00:25,553 INFO L432 NwaCegarLoop]: 683 mSDtfsCounter, 2520 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 4102 mSolverCounterSat, 702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2520 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 4804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 4102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:25,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2520 Valid, 968 Invalid, 4804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [702 Valid, 4102 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-16 04:00:25,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7487 states. [2024-11-16 04:00:25,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7487 to 7484. [2024-11-16 04:00:25,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7484 states, 7483 states have (on average 1.2977415475076841) internal successors, (9711), 7483 states have internal predecessors, (9711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:25,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7484 states to 7484 states and 9711 transitions. [2024-11-16 04:00:25,739 INFO L78 Accepts]: Start accepts. Automaton has 7484 states and 9711 transitions. Word has length 133 [2024-11-16 04:00:25,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:25,739 INFO L471 AbstractCegarLoop]: Abstraction has 7484 states and 9711 transitions. [2024-11-16 04:00:25,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:25,743 INFO L276 IsEmpty]: Start isEmpty. Operand 7484 states and 9711 transitions. [2024-11-16 04:00:25,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-16 04:00:25,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:25,745 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:00:25,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 04:00:25,746 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:25,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:25,747 INFO L85 PathProgramCache]: Analyzing trace with hash -340051140, now seen corresponding path program 1 times [2024-11-16 04:00:25,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:25,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677562305] [2024-11-16 04:00:25,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:25,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:25,979 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-16 04:00:25,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:25,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677562305] [2024-11-16 04:00:25,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677562305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:25,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:00:25,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:00:25,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429900705] [2024-11-16 04:00:25,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:25,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:25,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:25,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:25,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:00:25,983 INFO L87 Difference]: Start difference. First operand 7484 states and 9711 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:29,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:29,307 INFO L93 Difference]: Finished difference Result 20482 states and 27039 transitions. [2024-11-16 04:00:29,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:29,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2024-11-16 04:00:29,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:29,329 INFO L225 Difference]: With dead ends: 20482 [2024-11-16 04:00:29,329 INFO L226 Difference]: Without dead ends: 13788 [2024-11-16 04:00:29,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 04:00:29,340 INFO L432 NwaCegarLoop]: 831 mSDtfsCounter, 853 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2307 mSolverCounterSat, 866 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 3173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 866 IncrementalHoareTripleChecker+Valid, 2307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:29,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 968 Invalid, 3173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [866 Valid, 2307 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-16 04:00:29,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13788 states. [2024-11-16 04:00:29,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13788 to 13785. [2024-11-16 04:00:29,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13785 states, 13784 states have (on average 1.20625362739408) internal successors, (16627), 13784 states have internal predecessors, (16627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:29,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13785 states to 13785 states and 16627 transitions. [2024-11-16 04:00:29,526 INFO L78 Accepts]: Start accepts. Automaton has 13785 states and 16627 transitions. Word has length 207 [2024-11-16 04:00:29,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:29,527 INFO L471 AbstractCegarLoop]: Abstraction has 13785 states and 16627 transitions. [2024-11-16 04:00:29,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:29,527 INFO L276 IsEmpty]: Start isEmpty. Operand 13785 states and 16627 transitions. [2024-11-16 04:00:29,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-16 04:00:29,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:29,529 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:00:29,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 04:00:29,530 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:29,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:29,530 INFO L85 PathProgramCache]: Analyzing trace with hash 813430889, now seen corresponding path program 1 times [2024-11-16 04:00:29,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:29,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478898265] [2024-11-16 04:00:29,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:29,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:00:30,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:30,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478898265] [2024-11-16 04:00:30,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478898265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:30,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:00:30,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:00:30,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796888498] [2024-11-16 04:00:30,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:30,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:30,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:30,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:30,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:00:30,058 INFO L87 Difference]: Start difference. First operand 13785 states and 16627 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:33,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:33,878 INFO L93 Difference]: Finished difference Result 38635 states and 46925 transitions. [2024-11-16 04:00:33,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:33,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2024-11-16 04:00:33,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:33,909 INFO L225 Difference]: With dead ends: 38635 [2024-11-16 04:00:33,909 INFO L226 Difference]: Without dead ends: 24059 [2024-11-16 04:00:33,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:00:33,920 INFO L432 NwaCegarLoop]: 1800 mSDtfsCounter, 756 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 2568 mSolverCounterSat, 708 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 708 IncrementalHoareTripleChecker+Valid, 2568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:33,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 1940 Invalid, 3276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [708 Valid, 2568 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-16 04:00:33,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24059 states. [2024-11-16 04:00:34,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24059 to 24029. [2024-11-16 04:00:34,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24029 states, 24028 states have (on average 1.1472864990844016) internal successors, (27567), 24028 states have internal predecessors, (27567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:34,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24029 states to 24029 states and 27567 transitions. [2024-11-16 04:00:34,119 INFO L78 Accepts]: Start accepts. Automaton has 24029 states and 27567 transitions. Word has length 229 [2024-11-16 04:00:34,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:34,119 INFO L471 AbstractCegarLoop]: Abstraction has 24029 states and 27567 transitions. [2024-11-16 04:00:34,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:34,120 INFO L276 IsEmpty]: Start isEmpty. Operand 24029 states and 27567 transitions. [2024-11-16 04:00:34,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-16 04:00:34,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:34,122 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:00:34,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 04:00:34,122 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:34,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:34,122 INFO L85 PathProgramCache]: Analyzing trace with hash 862532676, now seen corresponding path program 1 times [2024-11-16 04:00:34,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:34,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366522991] [2024-11-16 04:00:34,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:34,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:35,049 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 23 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:00:35,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:35,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366522991] [2024-11-16 04:00:35,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366522991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:00:35,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746129812] [2024-11-16 04:00:35,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:35,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:00:35,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:00:35,058 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 04:00:35,062 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 04:00:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:35,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 04:00:35,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:00:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-16 04:00:35,303 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:00:35,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746129812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:35,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:00:35,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-16 04:00:35,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471506719] [2024-11-16 04:00:35,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:35,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:35,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:35,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:35,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-16 04:00:35,305 INFO L87 Difference]: Start difference. First operand 24029 states and 27567 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:37,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:37,984 INFO L93 Difference]: Finished difference Result 47266 states and 54338 transitions. [2024-11-16 04:00:37,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:37,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 258 [2024-11-16 04:00:37,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:38,014 INFO L225 Difference]: With dead ends: 47266 [2024-11-16 04:00:38,015 INFO L226 Difference]: Without dead ends: 24027 [2024-11-16 04:00:38,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-16 04:00:38,035 INFO L432 NwaCegarLoop]: 1349 mSDtfsCounter, 1188 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2453 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:38,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 1431 Invalid, 2897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2453 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-16 04:00:38,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24027 states. [2024-11-16 04:00:38,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24027 to 24026. [2024-11-16 04:00:38,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24026 states, 24025 states have (on average 1.1160041623309054) internal successors, (26812), 24025 states have internal predecessors, (26812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:38,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24026 states to 24026 states and 26812 transitions. [2024-11-16 04:00:38,353 INFO L78 Accepts]: Start accepts. Automaton has 24026 states and 26812 transitions. Word has length 258 [2024-11-16 04:00:38,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:38,354 INFO L471 AbstractCegarLoop]: Abstraction has 24026 states and 26812 transitions. [2024-11-16 04:00:38,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:38,354 INFO L276 IsEmpty]: Start isEmpty. Operand 24026 states and 26812 transitions. [2024-11-16 04:00:38,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2024-11-16 04:00:38,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:38,359 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:00:38,375 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 04:00:38,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:00:38,560 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:38,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:38,561 INFO L85 PathProgramCache]: Analyzing trace with hash -35853320, now seen corresponding path program 1 times [2024-11-16 04:00:38,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:38,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264289348] [2024-11-16 04:00:38,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:38,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:38,754 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-16 04:00:38,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:38,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264289348] [2024-11-16 04:00:38,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264289348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:38,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:00:38,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:00:38,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166893309] [2024-11-16 04:00:38,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:38,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:00:38,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:38,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:00:38,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:00:38,757 INFO L87 Difference]: Start difference. First operand 24026 states and 26812 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:45,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:45,579 INFO L93 Difference]: Finished difference Result 73483 states and 82539 transitions. [2024-11-16 04:00:45,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:00:45,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 367 [2024-11-16 04:00:45,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:45,671 INFO L225 Difference]: With dead ends: 73483 [2024-11-16 04:00:45,671 INFO L226 Difference]: Without dead ends: 50247 [2024-11-16 04:00:45,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:00:45,718 INFO L432 NwaCegarLoop]: 891 mSDtfsCounter, 1685 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 7103 mSolverCounterSat, 934 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 8037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 934 IncrementalHoareTripleChecker+Valid, 7103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:45,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1685 Valid, 1143 Invalid, 8037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [934 Valid, 7103 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-16 04:00:45,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50247 states. [2024-11-16 04:00:46,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50247 to 33501. [2024-11-16 04:00:46,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33501 states, 33500 states have (on average 1.1049253731343283) internal successors, (37015), 33500 states have internal predecessors, (37015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:46,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33501 states to 33501 states and 37015 transitions. [2024-11-16 04:00:46,457 INFO L78 Accepts]: Start accepts. Automaton has 33501 states and 37015 transitions. Word has length 367 [2024-11-16 04:00:46,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:46,458 INFO L471 AbstractCegarLoop]: Abstraction has 33501 states and 37015 transitions. [2024-11-16 04:00:46,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:46,458 INFO L276 IsEmpty]: Start isEmpty. Operand 33501 states and 37015 transitions. [2024-11-16 04:00:46,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2024-11-16 04:00:46,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:46,475 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:00:46,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 04:00:46,475 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:46,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:46,475 INFO L85 PathProgramCache]: Analyzing trace with hash 38980534, now seen corresponding path program 1 times [2024-11-16 04:00:46,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:46,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469708548] [2024-11-16 04:00:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:46,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:47,490 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 253 proven. 111 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 04:00:47,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:47,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469708548] [2024-11-16 04:00:47,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469708548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:00:47,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500665360] [2024-11-16 04:00:47,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:47,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:00:47,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:00:47,492 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 04:00:47,493 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 04:00:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:47,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 04:00:47,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:00:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2024-11-16 04:00:47,631 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:00:47,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500665360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:47,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:00:47,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-16 04:00:47,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082251266] [2024-11-16 04:00:47,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:47,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:47,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:47,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:47,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-16 04:00:47,633 INFO L87 Difference]: Start difference. First operand 33501 states and 37015 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:50,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:50,714 INFO L93 Difference]: Finished difference Result 82784 states and 92348 transitions. [2024-11-16 04:00:50,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:50,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2024-11-16 04:00:50,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:50,785 INFO L225 Difference]: With dead ends: 82784 [2024-11-16 04:00:50,785 INFO L226 Difference]: Without dead ends: 50073 [2024-11-16 04:00:50,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-16 04:00:50,810 INFO L432 NwaCegarLoop]: 928 mSDtfsCounter, 870 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2434 mSolverCounterSat, 782 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 782 IncrementalHoareTripleChecker+Valid, 2434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:50,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 1070 Invalid, 3216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [782 Valid, 2434 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-16 04:00:50,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50073 states. [2024-11-16 04:00:51,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50073 to 48475. [2024-11-16 04:00:51,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48475 states, 48474 states have (on average 1.0851796839542849) internal successors, (52603), 48474 states have internal predecessors, (52603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:51,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48475 states to 48475 states and 52603 transitions. [2024-11-16 04:00:51,404 INFO L78 Accepts]: Start accepts. Automaton has 48475 states and 52603 transitions. Word has length 374 [2024-11-16 04:00:51,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:51,407 INFO L471 AbstractCegarLoop]: Abstraction has 48475 states and 52603 transitions. [2024-11-16 04:00:51,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:51,408 INFO L276 IsEmpty]: Start isEmpty. Operand 48475 states and 52603 transitions. [2024-11-16 04:00:51,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2024-11-16 04:00:51,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:51,413 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:51,426 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 04:00:51,613 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,SelfDestructingSolverStorable9 [2024-11-16 04:00:51,614 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:51,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:51,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1032812626, now seen corresponding path program 1 times [2024-11-16 04:00:51,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:51,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277774091] [2024-11-16 04:00:51,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:51,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:52,006 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-16 04:00:52,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:52,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277774091] [2024-11-16 04:00:52,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277774091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:52,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:00:52,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:00:52,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690769535] [2024-11-16 04:00:52,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:52,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:52,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:52,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:52,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:00:52,008 INFO L87 Difference]: Start difference. First operand 48475 states and 52603 transitions. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:55,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:55,449 INFO L93 Difference]: Finished difference Result 112720 states and 123507 transitions. [2024-11-16 04:00:55,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:55,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 379 [2024-11-16 04:00:55,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:55,517 INFO L225 Difference]: With dead ends: 112720 [2024-11-16 04:00:55,517 INFO L226 Difference]: Without dead ends: 65035 [2024-11-16 04:00:55,542 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:00:55,543 INFO L432 NwaCegarLoop]: 796 mSDtfsCounter, 816 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2410 mSolverCounterSat, 926 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 3336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 926 IncrementalHoareTripleChecker+Valid, 2410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:55,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 879 Invalid, 3336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [926 Valid, 2410 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-16 04:00:55,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65035 states. [2024-11-16 04:00:56,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65035 to 63444. [2024-11-16 04:00:56,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63444 states, 63443 states have (on average 1.091720126727929) internal successors, (69262), 63443 states have internal predecessors, (69262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:56,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63444 states to 63444 states and 69262 transitions. [2024-11-16 04:00:56,300 INFO L78 Accepts]: Start accepts. Automaton has 63444 states and 69262 transitions. Word has length 379 [2024-11-16 04:00:56,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:56,301 INFO L471 AbstractCegarLoop]: Abstraction has 63444 states and 69262 transitions. [2024-11-16 04:00:56,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:56,301 INFO L276 IsEmpty]: Start isEmpty. Operand 63444 states and 69262 transitions. [2024-11-16 04:00:56,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2024-11-16 04:00:56,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:56,308 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:00:56,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 04:00:56,308 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:56,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:56,309 INFO L85 PathProgramCache]: Analyzing trace with hash 756058095, now seen corresponding path program 1 times [2024-11-16 04:00:56,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:56,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267122429] [2024-11-16 04:00:56,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:56,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:57,485 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 325 proven. 114 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-16 04:00:57,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:57,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267122429] [2024-11-16 04:00:57,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267122429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:00:57,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813912338] [2024-11-16 04:00:57,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:57,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:00:57,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:00:57,489 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 04:00:57,493 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 04:00:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:57,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 04:00:57,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:00:57,650 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2024-11-16 04:00:57,651 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:00:57,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813912338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:57,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:00:57,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-16 04:00:57,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189682967] [2024-11-16 04:00:57,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:57,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:57,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:57,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:57,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-16 04:00:57,653 INFO L87 Difference]: Start difference. First operand 63444 states and 69262 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:00,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:00,224 INFO L93 Difference]: Finished difference Result 127675 states and 139318 transitions. [2024-11-16 04:01:00,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:01:00,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 410 [2024-11-16 04:01:00,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:00,288 INFO L225 Difference]: With dead ends: 127675 [2024-11-16 04:01:00,288 INFO L226 Difference]: Without dead ends: 65021 [2024-11-16 04:01:00,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-16 04:01:00,303 INFO L432 NwaCegarLoop]: 1386 mSDtfsCounter, 1026 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2478 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 3084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 2478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:00,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 1472 Invalid, 3084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 2478 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-16 04:01:00,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65021 states. [2024-11-16 04:01:00,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65021 to 63434. [2024-11-16 04:01:00,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63434 states, 63433 states have (on average 1.0660224173537434) internal successors, (67621), 63433 states have internal predecessors, (67621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:00,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63434 states to 63434 states and 67621 transitions. [2024-11-16 04:01:00,995 INFO L78 Accepts]: Start accepts. Automaton has 63434 states and 67621 transitions. Word has length 410 [2024-11-16 04:01:00,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:00,996 INFO L471 AbstractCegarLoop]: Abstraction has 63434 states and 67621 transitions. [2024-11-16 04:01:00,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:00,996 INFO L276 IsEmpty]: Start isEmpty. Operand 63434 states and 67621 transitions. [2024-11-16 04:01:01,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2024-11-16 04:01:01,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:01,030 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:01:01,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 04:01:01,231 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 04:01:01,232 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:01,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:01,233 INFO L85 PathProgramCache]: Analyzing trace with hash -463484574, now seen corresponding path program 1 times [2024-11-16 04:01:01,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:01,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940578570] [2024-11-16 04:01:01,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:01,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:01,884 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 363 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-11-16 04:01:01,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:01,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940578570] [2024-11-16 04:01:01,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940578570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:01,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:01:01,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:01:01,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854163703] [2024-11-16 04:01:01,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:01,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:01:01,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:01,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:01:01,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:01:01,890 INFO L87 Difference]: Start difference. First operand 63434 states and 67621 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:04,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:04,678 INFO L93 Difference]: Finished difference Result 142643 states and 152731 transitions. [2024-11-16 04:01:04,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:01:04,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 492 [2024-11-16 04:01:04,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:04,755 INFO L225 Difference]: With dead ends: 142643 [2024-11-16 04:01:04,756 INFO L226 Difference]: Without dead ends: 78423 [2024-11-16 04:01:04,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:01:04,791 INFO L432 NwaCegarLoop]: 1739 mSDtfsCounter, 702 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2519 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 2519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:04,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 1883 Invalid, 2979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 2519 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-16 04:01:04,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78423 states. [2024-11-16 04:01:05,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78423 to 78406. [2024-11-16 04:01:05,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78406 states, 78405 states have (on average 1.0593584592819336) internal successors, (83059), 78405 states have internal predecessors, (83059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78406 states to 78406 states and 83059 transitions. [2024-11-16 04:01:05,774 INFO L78 Accepts]: Start accepts. Automaton has 78406 states and 83059 transitions. Word has length 492 [2024-11-16 04:01:05,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:05,778 INFO L471 AbstractCegarLoop]: Abstraction has 78406 states and 83059 transitions. [2024-11-16 04:01:05,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:05,778 INFO L276 IsEmpty]: Start isEmpty. Operand 78406 states and 83059 transitions. [2024-11-16 04:01:05,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2024-11-16 04:01:05,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:05,808 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:01:05,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 04:01:05,808 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:05,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:05,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1347150954, now seen corresponding path program 1 times [2024-11-16 04:01:05,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:05,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482546279] [2024-11-16 04:01:05,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:05,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:07,141 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 263 proven. 114 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 04:01:07,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:07,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482546279] [2024-11-16 04:01:07,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482546279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:01:07,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670267168] [2024-11-16 04:01:07,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:07,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:01:07,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:01:07,144 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 04:01:07,152 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 04:01:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:07,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 04:01:07,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:01:07,338 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2024-11-16 04:01:07,338 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:01:07,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670267168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:07,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:01:07,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-16 04:01:07,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021608722] [2024-11-16 04:01:07,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:07,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:01:07,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:07,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:01:07,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-16 04:01:07,341 INFO L87 Difference]: Start difference. First operand 78406 states and 83059 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:11,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:11,210 INFO L93 Difference]: Finished difference Result 182092 states and 193214 transitions. [2024-11-16 04:01:11,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:01:11,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 514 [2024-11-16 04:01:11,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:11,318 INFO L225 Difference]: With dead ends: 182092 [2024-11-16 04:01:11,319 INFO L226 Difference]: Without dead ends: 104476 [2024-11-16 04:01:11,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-16 04:01:11,338 INFO L432 NwaCegarLoop]: 457 mSDtfsCounter, 1017 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 2751 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 3654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 2751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:11,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 507 Invalid, 3654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 2751 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-16 04:01:11,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104476 states. [2024-11-16 04:01:12,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104476 to 101260. [2024-11-16 04:01:12,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101260 states, 101259 states have (on average 1.0612883793045556) internal successors, (107465), 101259 states have internal predecessors, (107465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:12,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101260 states to 101260 states and 107465 transitions. [2024-11-16 04:01:12,881 INFO L78 Accepts]: Start accepts. Automaton has 101260 states and 107465 transitions. Word has length 514 [2024-11-16 04:01:12,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:12,881 INFO L471 AbstractCegarLoop]: Abstraction has 101260 states and 107465 transitions. [2024-11-16 04:01:12,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:12,881 INFO L276 IsEmpty]: Start isEmpty. Operand 101260 states and 107465 transitions. [2024-11-16 04:01:12,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2024-11-16 04:01:12,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:12,909 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:01:12,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 04:01:13,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:01:13,111 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:13,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:13,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1853624222, now seen corresponding path program 1 times [2024-11-16 04:01:13,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:13,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827203817] [2024-11-16 04:01:13,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:13,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:13,542 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 654 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-16 04:01:13,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:13,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827203817] [2024-11-16 04:01:13,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827203817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:13,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:01:13,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:01:13,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831890436] [2024-11-16 04:01:13,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:13,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:01:13,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:13,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:01:13,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:01:13,545 INFO L87 Difference]: Start difference. First operand 101260 states and 107465 transitions. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:16,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:16,713 INFO L93 Difference]: Finished difference Result 204109 states and 216699 transitions. [2024-11-16 04:01:16,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:01:16,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 558 [2024-11-16 04:01:16,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:16,828 INFO L225 Difference]: With dead ends: 204109 [2024-11-16 04:01:16,828 INFO L226 Difference]: Without dead ends: 103639 [2024-11-16 04:01:16,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:01:16,887 INFO L432 NwaCegarLoop]: 1774 mSDtfsCounter, 736 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2608 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1910 SdHoareTripleChecker+Invalid, 2663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:16,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1910 Invalid, 2663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2608 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-16 04:01:16,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103639 states. [2024-11-16 04:01:18,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103639 to 103625. [2024-11-16 04:01:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103625 states, 103624 states have (on average 1.0610765845750019) internal successors, (109953), 103624 states have internal predecessors, (109953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:18,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103625 states to 103625 states and 109953 transitions. [2024-11-16 04:01:18,450 INFO L78 Accepts]: Start accepts. Automaton has 103625 states and 109953 transitions. Word has length 558 [2024-11-16 04:01:18,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:18,451 INFO L471 AbstractCegarLoop]: Abstraction has 103625 states and 109953 transitions. [2024-11-16 04:01:18,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:18,451 INFO L276 IsEmpty]: Start isEmpty. Operand 103625 states and 109953 transitions. [2024-11-16 04:01:18,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2024-11-16 04:01:18,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:18,470 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:01:18,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 04:01:18,471 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:18,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:18,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1888775253, now seen corresponding path program 1 times [2024-11-16 04:01:18,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:18,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033011974] [2024-11-16 04:01:18,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:18,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:19,355 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 431 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 04:01:19,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:19,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033011974] [2024-11-16 04:01:19,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033011974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:19,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:01:19,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:01:19,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350837558] [2024-11-16 04:01:19,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:19,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:01:19,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:19,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:01:19,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:01:19,359 INFO L87 Difference]: Start difference. First operand 103625 states and 109953 transitions. Second operand has 4 states, 4 states have (on average 137.75) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:23,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:23,189 INFO L93 Difference]: Finished difference Result 215917 states and 228959 transitions. [2024-11-16 04:01:23,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:01:23,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 137.75) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 562 [2024-11-16 04:01:23,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:23,310 INFO L225 Difference]: With dead ends: 215917 [2024-11-16 04:01:23,310 INFO L226 Difference]: Without dead ends: 110716 [2024-11-16 04:01:23,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:01:23,361 INFO L432 NwaCegarLoop]: 792 mSDtfsCounter, 1359 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 4569 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1359 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 4881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 4569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:23,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1359 Valid, 1075 Invalid, 4881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 4569 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-16 04:01:23,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110716 states. [2024-11-16 04:01:24,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110716 to 109139. [2024-11-16 04:01:24,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109139 states, 109138 states have (on average 1.0559841668346497) internal successors, (115248), 109138 states have internal predecessors, (115248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:24,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109139 states to 109139 states and 115248 transitions. [2024-11-16 04:01:24,809 INFO L78 Accepts]: Start accepts. Automaton has 109139 states and 115248 transitions. Word has length 562 [2024-11-16 04:01:24,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:24,810 INFO L471 AbstractCegarLoop]: Abstraction has 109139 states and 115248 transitions. [2024-11-16 04:01:24,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.75) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:24,810 INFO L276 IsEmpty]: Start isEmpty. Operand 109139 states and 115248 transitions. [2024-11-16 04:01:24,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2024-11-16 04:01:24,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:24,828 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:01:24,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 04:01:24,828 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:24,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:24,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1067544296, now seen corresponding path program 1 times [2024-11-16 04:01:24,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:24,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234058823] [2024-11-16 04:01:24,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:24,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:25,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2024-11-16 04:01:25,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:25,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234058823] [2024-11-16 04:01:25,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234058823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:25,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:01:25,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:01:25,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511433475] [2024-11-16 04:01:25,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:25,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:01:25,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:25,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:01:25,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:01:25,108 INFO L87 Difference]: Start difference. First operand 109139 states and 115248 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 2 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)