./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem15_label26.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/Problem15_label26.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 cdf2fa99034a2ce4515fc13e5b104f83251835a7a436038ebabc8d1f47f1da91 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:41:57,285 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:41:57,346 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:41:57,349 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:41:57,350 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:41:57,371 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:41:57,372 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:41:57,372 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:41:57,372 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:41:57,373 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:41:57,374 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:41:57,374 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:41:57,375 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:41:57,376 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:41:57,376 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:41:57,376 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:41:57,377 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:41:57,377 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:41:57,377 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:41:57,377 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:41:57,377 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:41:57,378 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:41:57,378 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:41:57,378 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:41:57,378 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:41:57,378 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:41:57,378 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:41:57,379 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:41:57,379 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:41:57,379 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:41:57,379 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:41:57,379 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:41:57,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:41:57,380 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:41:57,380 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:41:57,380 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:41:57,380 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:41:57,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:41:57,380 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:41:57,380 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:41:57,380 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:41:57,381 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:41:57,381 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cdf2fa99034a2ce4515fc13e5b104f83251835a7a436038ebabc8d1f47f1da91 [2024-11-09 19:41:57,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:41:57,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:41:57,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:41:57,611 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:41:57,611 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:41:57,612 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem15_label26.c [2024-11-09 19:41:58,767 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:41:59,037 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:41:59,039 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label26.c [2024-11-09 19:41:59,059 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc538bdd2/f0047f76cccd43da9bad47f2506179c5/FLAGc1dbbebc1 [2024-11-09 19:41:59,072 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc538bdd2/f0047f76cccd43da9bad47f2506179c5 [2024-11-09 19:41:59,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:41:59,074 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:41:59,076 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:41:59,076 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:41:59,080 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:41:59,081 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:41:59" (1/1) ... [2024-11-09 19:41:59,082 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31c1fbda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:59, skipping insertion in model container [2024-11-09 19:41:59,082 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:41:59" (1/1) ... [2024-11-09 19:41:59,129 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:41:59,338 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/Problem15_label26.c[6541,6554] [2024-11-09 19:41:59,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:41:59,591 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:41:59,613 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/Problem15_label26.c[6541,6554] [2024-11-09 19:41:59,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:41:59,770 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:41:59,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:59 WrapperNode [2024-11-09 19:41:59,770 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:41:59,771 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:41:59,772 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:41:59,772 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:41:59,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:59" (1/1) ... [2024-11-09 19:41:59,808 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:59" (1/1) ... [2024-11-09 19:41:59,903 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1759 [2024-11-09 19:41:59,904 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:41:59,904 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:41:59,904 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:41:59,904 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:41:59,916 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:59" (1/1) ... [2024-11-09 19:41:59,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:59" (1/1) ... [2024-11-09 19:41:59,931 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:59" (1/1) ... [2024-11-09 19:42:00,027 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]. [2024-11-09 19:42:00,027 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:59" (1/1) ... [2024-11-09 19:42:00,028 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:59" (1/1) ... [2024-11-09 19:42:00,066 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:59" (1/1) ... [2024-11-09 19:42:00,072 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:59" (1/1) ... [2024-11-09 19:42:00,079 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:59" (1/1) ... [2024-11-09 19:42:00,087 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:59" (1/1) ... [2024-11-09 19:42:00,101 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:42:00,102 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:42:00,102 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:42:00,102 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:42:00,103 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:59" (1/1) ... [2024-11-09 19:42:00,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:42:00,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:42:00,128 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) [2024-11-09 19:42:00,130 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 [2024-11-09 19:42:00,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:42:00,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:42:00,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:42:00,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:42:00,221 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:42:00,223 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:42:02,342 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1665: havoc calculate_output_#t~ret7#1; [2024-11-09 19:42:02,499 INFO L? ?]: Removed 697 outVars from TransFormulas that were not future-live. [2024-11-09 19:42:02,500 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:42:02,517 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:42:02,517 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:42:02,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:42:02 BoogieIcfgContainer [2024-11-09 19:42:02,518 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:42:02,519 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:42:02,519 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:42:02,522 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:42:02,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:41:59" (1/3) ... [2024-11-09 19:42:02,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166e204e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:42:02, skipping insertion in model container [2024-11-09 19:42:02,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:59" (2/3) ... [2024-11-09 19:42:02,523 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166e204e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:42:02, skipping insertion in model container [2024-11-09 19:42:02,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:42:02" (3/3) ... [2024-11-09 19:42:02,524 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label26.c [2024-11-09 19:42:02,536 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:42:02,536 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:42:02,590 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:42:02,595 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;@6ab5040c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:42:02,595 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:42:02,599 INFO L276 IsEmpty]: Start isEmpty. Operand has 427 states, 425 states have (on average 2.3176470588235296) internal successors, (985), 426 states have internal predecessors, (985), 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) [2024-11-09 19:42:02,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 19:42:02,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:02,625 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:02,625 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:02,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:02,634 INFO L85 PathProgramCache]: Analyzing trace with hash 741961884, now seen corresponding path program 1 times [2024-11-09 19:42:02,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:02,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122074622] [2024-11-09 19:42:02,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:02,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:03,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:42:03,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:03,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122074622] [2024-11-09 19:42:03,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122074622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:03,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:03,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:42:03,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92841666] [2024-11-09 19:42:03,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:03,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:03,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:03,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:03,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:03,034 INFO L87 Difference]: Start difference. First operand has 427 states, 425 states have (on average 2.3176470588235296) internal successors, (985), 426 states have internal predecessors, (985), 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 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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) [2024-11-09 19:42:05,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:05,138 INFO L93 Difference]: Finished difference Result 1197 states and 2859 transitions. [2024-11-09 19:42:05,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:05,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 55 [2024-11-09 19:42:05,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:05,152 INFO L225 Difference]: With dead ends: 1197 [2024-11-09 19:42:05,152 INFO L226 Difference]: Without dead ends: 691 [2024-11-09 19:42:05,155 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 [2024-11-09 19:42:05,158 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 550 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:05,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 234 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:42:05,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2024-11-09 19:42:05,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 683. [2024-11-09 19:42:05,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 2.2873900293255134) internal successors, (1560), 682 states have internal predecessors, (1560), 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) [2024-11-09 19:42:05,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1560 transitions. [2024-11-09 19:42:05,236 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1560 transitions. Word has length 55 [2024-11-09 19:42:05,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:05,236 INFO L471 AbstractCegarLoop]: Abstraction has 683 states and 1560 transitions. [2024-11-09 19:42:05,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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) [2024-11-09 19:42:05,237 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1560 transitions. [2024-11-09 19:42:05,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-09 19:42:05,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:05,240 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 19:42:05,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:42:05,240 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:05,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:05,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1145646588, now seen corresponding path program 1 times [2024-11-09 19:42:05,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:05,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948743386] [2024-11-09 19:42:05,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:05,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:05,407 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:42:05,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:05,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948743386] [2024-11-09 19:42:05,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948743386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:05,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:05,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:42:05,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296060886] [2024-11-09 19:42:05,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:05,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:05,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:05,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:05,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:05,413 INFO L87 Difference]: Start difference. First operand 683 states and 1560 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 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) [2024-11-09 19:42:07,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:07,090 INFO L93 Difference]: Finished difference Result 1970 states and 4570 transitions. [2024-11-09 19:42:07,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:07,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 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 124 [2024-11-09 19:42:07,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:07,098 INFO L225 Difference]: With dead ends: 1970 [2024-11-09 19:42:07,098 INFO L226 Difference]: Without dead ends: 1289 [2024-11-09 19:42:07,100 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 [2024-11-09 19:42:07,101 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 479 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:07,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 343 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 19:42:07,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2024-11-09 19:42:07,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1286. [2024-11-09 19:42:07,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1285 states have (on average 2.1151750972762646) internal successors, (2718), 1285 states have internal predecessors, (2718), 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) [2024-11-09 19:42:07,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 2718 transitions. [2024-11-09 19:42:07,130 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 2718 transitions. Word has length 124 [2024-11-09 19:42:07,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:07,131 INFO L471 AbstractCegarLoop]: Abstraction has 1286 states and 2718 transitions. [2024-11-09 19:42:07,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 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) [2024-11-09 19:42:07,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 2718 transitions. [2024-11-09 19:42:07,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-09 19:42:07,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:07,137 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 19:42:07,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:42:07,137 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:07,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:07,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1373010404, now seen corresponding path program 1 times [2024-11-09 19:42:07,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:07,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846845283] [2024-11-09 19:42:07,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:07,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:07,406 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:42:07,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:07,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846845283] [2024-11-09 19:42:07,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846845283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:07,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:07,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:42:07,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086060794] [2024-11-09 19:42:07,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:07,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:07,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:07,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:07,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:07,409 INFO L87 Difference]: Start difference. First operand 1286 states and 2718 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 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) [2024-11-09 19:42:08,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:08,830 INFO L93 Difference]: Finished difference Result 2870 states and 6002 transitions. [2024-11-09 19:42:08,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:08,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 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 132 [2024-11-09 19:42:08,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:08,835 INFO L225 Difference]: With dead ends: 2870 [2024-11-09 19:42:08,836 INFO L226 Difference]: Without dead ends: 1586 [2024-11-09 19:42:08,837 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 [2024-11-09 19:42:08,838 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 457 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:08,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 363 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 19:42:08,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2024-11-09 19:42:08,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1586. [2024-11-09 19:42:08,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1586 states, 1585 states have (on average 2.0542586750788643) internal successors, (3256), 1585 states have internal predecessors, (3256), 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) [2024-11-09 19:42:08,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 3256 transitions. [2024-11-09 19:42:08,860 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 3256 transitions. Word has length 132 [2024-11-09 19:42:08,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:08,861 INFO L471 AbstractCegarLoop]: Abstraction has 1586 states and 3256 transitions. [2024-11-09 19:42:08,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 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) [2024-11-09 19:42:08,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 3256 transitions. [2024-11-09 19:42:08,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-09 19:42:08,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:08,863 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:08,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:42:08,863 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:08,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:08,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1017795931, now seen corresponding path program 1 times [2024-11-09 19:42:08,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:08,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896604284] [2024-11-09 19:42:08,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:08,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:09,067 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-09 19:42:09,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:09,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896604284] [2024-11-09 19:42:09,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896604284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:09,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:09,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:42:09,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092564970] [2024-11-09 19:42:09,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:09,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:09,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:09,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:09,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:09,069 INFO L87 Difference]: Start difference. First operand 1586 states and 3256 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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) [2024-11-09 19:42:10,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:10,718 INFO L93 Difference]: Finished difference Result 4081 states and 8583 transitions. [2024-11-09 19:42:10,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:10,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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 216 [2024-11-09 19:42:10,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:10,726 INFO L225 Difference]: With dead ends: 4081 [2024-11-09 19:42:10,727 INFO L226 Difference]: Without dead ends: 2797 [2024-11-09 19:42:10,728 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 [2024-11-09 19:42:10,729 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 490 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:10,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 365 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 19:42:10,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2024-11-09 19:42:10,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2791. [2024-11-09 19:42:10,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2790 states have (on average 1.9971326164874552) internal successors, (5572), 2790 states have internal predecessors, (5572), 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) [2024-11-09 19:42:10,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 5572 transitions. [2024-11-09 19:42:10,774 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 5572 transitions. Word has length 216 [2024-11-09 19:42:10,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:10,775 INFO L471 AbstractCegarLoop]: Abstraction has 2791 states and 5572 transitions. [2024-11-09 19:42:10,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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) [2024-11-09 19:42:10,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 5572 transitions. [2024-11-09 19:42:10,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-09 19:42:10,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:10,778 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:10,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:42:10,779 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:10,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:10,779 INFO L85 PathProgramCache]: Analyzing trace with hash 880422333, now seen corresponding path program 1 times [2024-11-09 19:42:10,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:10,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539930904] [2024-11-09 19:42:10,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:10,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:10,972 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-09 19:42:10,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:10,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539930904] [2024-11-09 19:42:10,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539930904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:10,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:10,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:42:10,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805550059] [2024-11-09 19:42:10,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:10,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:10,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:10,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:10,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:10,974 INFO L87 Difference]: Start difference. First operand 2791 states and 5572 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2024-11-09 19:42:12,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:12,486 INFO L93 Difference]: Finished difference Result 7390 states and 14952 transitions. [2024-11-09 19:42:12,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:12,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 224 [2024-11-09 19:42:12,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:12,500 INFO L225 Difference]: With dead ends: 7390 [2024-11-09 19:42:12,500 INFO L226 Difference]: Without dead ends: 4901 [2024-11-09 19:42:12,503 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 [2024-11-09 19:42:12,506 INFO L432 NwaCegarLoop]: 834 mSDtfsCounter, 507 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:12,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 873 Invalid, 1587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 19:42:12,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4901 states. [2024-11-09 19:42:12,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4901 to 4301. [2024-11-09 19:42:12,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4301 states, 4300 states have (on average 1.9432558139534883) internal successors, (8356), 4300 states have internal predecessors, (8356), 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) [2024-11-09 19:42:12,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4301 states to 4301 states and 8356 transitions. [2024-11-09 19:42:12,574 INFO L78 Accepts]: Start accepts. Automaton has 4301 states and 8356 transitions. Word has length 224 [2024-11-09 19:42:12,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:12,575 INFO L471 AbstractCegarLoop]: Abstraction has 4301 states and 8356 transitions. [2024-11-09 19:42:12,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2024-11-09 19:42:12,576 INFO L276 IsEmpty]: Start isEmpty. Operand 4301 states and 8356 transitions. [2024-11-09 19:42:12,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-09 19:42:12,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:12,578 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:12,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:42:12,578 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:12,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:12,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1360472037, now seen corresponding path program 1 times [2024-11-09 19:42:12,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:12,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747314975] [2024-11-09 19:42:12,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:12,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:12,726 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-09 19:42:12,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:12,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747314975] [2024-11-09 19:42:12,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747314975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:12,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:12,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:42:12,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246646810] [2024-11-09 19:42:12,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:12,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:12,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:12,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:12,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:12,729 INFO L87 Difference]: Start difference. First operand 4301 states and 8356 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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) [2024-11-09 19:42:14,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:14,485 INFO L93 Difference]: Finished difference Result 9805 states and 19363 transitions. [2024-11-09 19:42:14,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:14,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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 230 [2024-11-09 19:42:14,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:14,505 INFO L225 Difference]: With dead ends: 9805 [2024-11-09 19:42:14,506 INFO L226 Difference]: Without dead ends: 5806 [2024-11-09 19:42:14,510 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 [2024-11-09 19:42:14,512 INFO L432 NwaCegarLoop]: 327 mSDtfsCounter, 452 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:14,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 368 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 19:42:14,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5806 states. [2024-11-09 19:42:14,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5806 to 5504. [2024-11-09 19:42:14,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5504 states, 5503 states have (on average 1.9274940941304743) internal successors, (10607), 5503 states have internal predecessors, (10607), 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) [2024-11-09 19:42:14,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5504 states to 5504 states and 10607 transitions. [2024-11-09 19:42:14,592 INFO L78 Accepts]: Start accepts. Automaton has 5504 states and 10607 transitions. Word has length 230 [2024-11-09 19:42:14,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:14,592 INFO L471 AbstractCegarLoop]: Abstraction has 5504 states and 10607 transitions. [2024-11-09 19:42:14,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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) [2024-11-09 19:42:14,593 INFO L276 IsEmpty]: Start isEmpty. Operand 5504 states and 10607 transitions. [2024-11-09 19:42:14,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2024-11-09 19:42:14,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:14,596 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2024-11-09 19:42:14,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:42:14,597 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:14,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:14,598 INFO L85 PathProgramCache]: Analyzing trace with hash -220936658, now seen corresponding path program 1 times [2024-11-09 19:42:14,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:14,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303132039] [2024-11-09 19:42:14,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:14,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:14,846 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-09 19:42:14,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:14,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303132039] [2024-11-09 19:42:14,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303132039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:14,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:14,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:42:14,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71533894] [2024-11-09 19:42:14,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:14,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:14,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:14,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:14,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:14,848 INFO L87 Difference]: Start difference. First operand 5504 states and 10607 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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) [2024-11-09 19:42:16,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:16,202 INFO L93 Difference]: Finished difference Result 12513 states and 24456 transitions. [2024-11-09 19:42:16,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:16,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 344 [2024-11-09 19:42:16,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:16,221 INFO L225 Difference]: With dead ends: 12513 [2024-11-09 19:42:16,221 INFO L226 Difference]: Without dead ends: 7311 [2024-11-09 19:42:16,229 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 [2024-11-09 19:42:16,230 INFO L432 NwaCegarLoop]: 834 mSDtfsCounter, 506 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:16,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 875 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 19:42:16,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7311 states. [2024-11-09 19:42:16,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7311 to 7309. [2024-11-09 19:42:16,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7309 states, 7308 states have (on average 1.9098248494800218) internal successors, (13957), 7308 states have internal predecessors, (13957), 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) [2024-11-09 19:42:16,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7309 states to 7309 states and 13957 transitions. [2024-11-09 19:42:16,359 INFO L78 Accepts]: Start accepts. Automaton has 7309 states and 13957 transitions. Word has length 344 [2024-11-09 19:42:16,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:16,359 INFO L471 AbstractCegarLoop]: Abstraction has 7309 states and 13957 transitions. [2024-11-09 19:42:16,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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) [2024-11-09 19:42:16,360 INFO L276 IsEmpty]: Start isEmpty. Operand 7309 states and 13957 transitions. [2024-11-09 19:42:16,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-11-09 19:42:16,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:16,364 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:16,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:42:16,364 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:16,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:16,364 INFO L85 PathProgramCache]: Analyzing trace with hash -193440828, now seen corresponding path program 1 times [2024-11-09 19:42:16,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:16,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625263528] [2024-11-09 19:42:16,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:16,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:16,613 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:42:16,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:16,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625263528] [2024-11-09 19:42:16,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625263528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:16,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:16,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:42:16,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733939635] [2024-11-09 19:42:16,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:16,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:16,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:16,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:16,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:16,616 INFO L87 Difference]: Start difference. First operand 7309 states and 13957 transitions. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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) [2024-11-09 19:42:18,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:18,186 INFO L93 Difference]: Finished difference Result 16124 states and 31159 transitions. [2024-11-09 19:42:18,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:18,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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 420 [2024-11-09 19:42:18,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:18,200 INFO L225 Difference]: With dead ends: 16124 [2024-11-09 19:42:18,201 INFO L226 Difference]: Without dead ends: 9117 [2024-11-09 19:42:18,206 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 [2024-11-09 19:42:18,207 INFO L432 NwaCegarLoop]: 820 mSDtfsCounter, 481 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:18,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 858 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 19:42:18,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9117 states. [2024-11-09 19:42:18,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9117 to 8810. [2024-11-09 19:42:18,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8810 states, 8809 states have (on average 1.897945283233057) internal successors, (16719), 8809 states have internal predecessors, (16719), 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) [2024-11-09 19:42:18,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8810 states to 8810 states and 16719 transitions. [2024-11-09 19:42:18,306 INFO L78 Accepts]: Start accepts. Automaton has 8810 states and 16719 transitions. Word has length 420 [2024-11-09 19:42:18,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:18,307 INFO L471 AbstractCegarLoop]: Abstraction has 8810 states and 16719 transitions. [2024-11-09 19:42:18,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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) [2024-11-09 19:42:18,308 INFO L276 IsEmpty]: Start isEmpty. Operand 8810 states and 16719 transitions. [2024-11-09 19:42:18,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2024-11-09 19:42:18,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:18,312 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:18,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:42:18,312 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:18,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:18,313 INFO L85 PathProgramCache]: Analyzing trace with hash -369387961, now seen corresponding path program 1 times [2024-11-09 19:42:18,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:18,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604107976] [2024-11-09 19:42:18,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:18,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:18,559 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-09 19:42:18,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:18,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604107976] [2024-11-09 19:42:18,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604107976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:18,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:18,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:42:18,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042752620] [2024-11-09 19:42:18,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:18,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:18,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:18,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:18,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:18,564 INFO L87 Difference]: Start difference. First operand 8810 states and 16719 transitions. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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) [2024-11-09 19:42:20,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:20,197 INFO L93 Difference]: Finished difference Result 20618 states and 39324 transitions. [2024-11-09 19:42:20,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:20,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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 430 [2024-11-09 19:42:20,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:20,216 INFO L225 Difference]: With dead ends: 20618 [2024-11-09 19:42:20,217 INFO L226 Difference]: Without dead ends: 12110 [2024-11-09 19:42:20,225 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 [2024-11-09 19:42:20,227 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 493 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:20,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 319 Invalid, 1575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 19:42:20,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12110 states. [2024-11-09 19:42:20,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12110 to 7904. [2024-11-09 19:42:20,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7904 states, 7903 states have (on average 1.9072504112362394) internal successors, (15073), 7903 states have internal predecessors, (15073), 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) [2024-11-09 19:42:20,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7904 states to 7904 states and 15073 transitions. [2024-11-09 19:42:20,363 INFO L78 Accepts]: Start accepts. Automaton has 7904 states and 15073 transitions. Word has length 430 [2024-11-09 19:42:20,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:20,363 INFO L471 AbstractCegarLoop]: Abstraction has 7904 states and 15073 transitions. [2024-11-09 19:42:20,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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) [2024-11-09 19:42:20,363 INFO L276 IsEmpty]: Start isEmpty. Operand 7904 states and 15073 transitions. [2024-11-09 19:42:20,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2024-11-09 19:42:20,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:20,370 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:20,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:42:20,371 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:20,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:20,371 INFO L85 PathProgramCache]: Analyzing trace with hash 838131712, now seen corresponding path program 1 times [2024-11-09 19:42:20,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:20,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412587840] [2024-11-09 19:42:20,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:20,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:20,559 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2024-11-09 19:42:20,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:20,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412587840] [2024-11-09 19:42:20,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412587840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:20,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:20,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:42:20,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201435403] [2024-11-09 19:42:20,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:20,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:20,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:20,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:20,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:20,562 INFO L87 Difference]: Start difference. First operand 7904 states and 15073 transitions. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 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) [2024-11-09 19:42:21,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:21,782 INFO L93 Difference]: Finished difference Result 17905 states and 34427 transitions. [2024-11-09 19:42:21,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:21,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 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 522 [2024-11-09 19:42:21,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:21,795 INFO L225 Difference]: With dead ends: 17905 [2024-11-09 19:42:21,795 INFO L226 Difference]: Without dead ends: 10303 [2024-11-09 19:42:21,800 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 [2024-11-09 19:42:21,802 INFO L432 NwaCegarLoop]: 662 mSDtfsCounter, 594 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:21,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 684 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 19:42:21,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10303 states. [2024-11-09 19:42:21,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10303 to 10303. [2024-11-09 19:42:21,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10303 states, 10302 states have (on average 1.9120559114735003) internal successors, (19698), 10302 states have internal predecessors, (19698), 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) [2024-11-09 19:42:21,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10303 states to 10303 states and 19698 transitions. [2024-11-09 19:42:21,904 INFO L78 Accepts]: Start accepts. Automaton has 10303 states and 19698 transitions. Word has length 522 [2024-11-09 19:42:21,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:21,905 INFO L471 AbstractCegarLoop]: Abstraction has 10303 states and 19698 transitions. [2024-11-09 19:42:21,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 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) [2024-11-09 19:42:21,905 INFO L276 IsEmpty]: Start isEmpty. Operand 10303 states and 19698 transitions. [2024-11-09 19:42:21,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2024-11-09 19:42:21,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:21,909 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:21,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:42:21,909 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:21,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:21,910 INFO L85 PathProgramCache]: Analyzing trace with hash 60285052, now seen corresponding path program 1 times [2024-11-09 19:42:21,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:21,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86597884] [2024-11-09 19:42:21,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:21,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:22,344 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 446 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2024-11-09 19:42:22,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:22,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86597884] [2024-11-09 19:42:22,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86597884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:22,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:22,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:42:22,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543652376] [2024-11-09 19:42:22,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:22,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:22,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:22,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:22,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:22,346 INFO L87 Difference]: Start difference. First operand 10303 states and 19698 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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) [2024-11-09 19:42:23,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:23,672 INFO L93 Difference]: Finished difference Result 25118 states and 48279 transitions. [2024-11-09 19:42:23,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:23,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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 547 [2024-11-09 19:42:23,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:23,691 INFO L225 Difference]: With dead ends: 25118 [2024-11-09 19:42:23,692 INFO L226 Difference]: Without dead ends: 15117 [2024-11-09 19:42:23,701 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 [2024-11-09 19:42:23,702 INFO L432 NwaCegarLoop]: 822 mSDtfsCounter, 481 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:23,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 855 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 19:42:23,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15117 states. [2024-11-09 19:42:23,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15117 to 15106. [2024-11-09 19:42:23,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15106 states, 15105 states have (on average 1.8981794107911287) internal successors, (28672), 15105 states have internal predecessors, (28672), 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) [2024-11-09 19:42:23,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15106 states to 15106 states and 28672 transitions. [2024-11-09 19:42:23,892 INFO L78 Accepts]: Start accepts. Automaton has 15106 states and 28672 transitions. Word has length 547 [2024-11-09 19:42:23,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:23,893 INFO L471 AbstractCegarLoop]: Abstraction has 15106 states and 28672 transitions. [2024-11-09 19:42:23,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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) [2024-11-09 19:42:23,893 INFO L276 IsEmpty]: Start isEmpty. Operand 15106 states and 28672 transitions. [2024-11-09 19:42:23,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2024-11-09 19:42:23,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:23,900 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:23,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:42:23,901 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:23,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:23,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1590383810, now seen corresponding path program 1 times [2024-11-09 19:42:23,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:23,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829693837] [2024-11-09 19:42:23,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:23,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:24,259 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2024-11-09 19:42:24,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:24,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829693837] [2024-11-09 19:42:24,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829693837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:24,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:24,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:42:24,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000669502] [2024-11-09 19:42:24,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:24,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:24,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:24,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:24,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:24,262 INFO L87 Difference]: Start difference. First operand 15106 states and 28672 transitions. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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) [2024-11-09 19:42:25,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:25,416 INFO L93 Difference]: Finished difference Result 31110 states and 59005 transitions. [2024-11-09 19:42:25,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:25,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 601 [2024-11-09 19:42:25,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:25,435 INFO L225 Difference]: With dead ends: 31110 [2024-11-09 19:42:25,435 INFO L226 Difference]: Without dead ends: 15106 [2024-11-09 19:42:25,446 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 [2024-11-09 19:42:25,447 INFO L432 NwaCegarLoop]: 857 mSDtfsCounter, 481 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:25,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 903 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:42:25,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15106 states. [2024-11-09 19:42:25,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15106 to 15106. [2024-11-09 19:42:25,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15106 states, 15105 states have (on average 1.8962595167163192) internal successors, (28643), 15105 states have internal predecessors, (28643), 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) [2024-11-09 19:42:25,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15106 states to 15106 states and 28643 transitions. [2024-11-09 19:42:25,600 INFO L78 Accepts]: Start accepts. Automaton has 15106 states and 28643 transitions. Word has length 601 [2024-11-09 19:42:25,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:25,601 INFO L471 AbstractCegarLoop]: Abstraction has 15106 states and 28643 transitions. [2024-11-09 19:42:25,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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) [2024-11-09 19:42:25,601 INFO L276 IsEmpty]: Start isEmpty. Operand 15106 states and 28643 transitions. [2024-11-09 19:42:25,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2024-11-09 19:42:25,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:25,616 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:25,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 19:42:25,616 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:25,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:25,617 INFO L85 PathProgramCache]: Analyzing trace with hash -663091807, now seen corresponding path program 1 times [2024-11-09 19:42:25,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:25,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664050901] [2024-11-09 19:42:25,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:25,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:26,166 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 605 proven. 39 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-09 19:42:26,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:26,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664050901] [2024-11-09 19:42:26,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664050901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:42:26,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936991430] [2024-11-09 19:42:26,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:26,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:42:26,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:42:26,169 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) [2024-11-09 19:42:26,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:42:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:26,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 19:42:26,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:42:27,133 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 605 proven. 39 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-09 19:42:27,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:42:27,720 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 605 proven. 39 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-09 19:42:27,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936991430] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:42:27,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:42:27,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-09 19:42:27,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579703906] [2024-11-09 19:42:27,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:42:27,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 19:42:27,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:27,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 19:42:27,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-09 19:42:27,723 INFO L87 Difference]: Start difference. First operand 15106 states and 28643 transitions. Second operand has 9 states, 9 states have (on average 81.66666666666667) internal successors, (735), 8 states have internal predecessors, (735), 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) [2024-11-09 19:42:33,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:33,575 INFO L93 Difference]: Finished difference Result 38276 states and 72159 transitions. [2024-11-09 19:42:33,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 19:42:33,576 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 81.66666666666667) internal successors, (735), 8 states have internal predecessors, (735), 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 614 [2024-11-09 19:42:33,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:33,594 INFO L225 Difference]: With dead ends: 38276 [2024-11-09 19:42:33,594 INFO L226 Difference]: Without dead ends: 17807 [2024-11-09 19:42:33,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1237 GetRequests, 1223 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2024-11-09 19:42:33,603 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 6391 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 7984 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6391 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 8604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 7984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:33,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6391 Valid, 257 Invalid, 8604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 7984 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-09 19:42:33,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17807 states. [2024-11-09 19:42:33,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17807 to 13604. [2024-11-09 19:42:33,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13604 states, 13603 states have (on average 1.8379034036609572) internal successors, (25001), 13603 states have internal predecessors, (25001), 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) [2024-11-09 19:42:33,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13604 states to 13604 states and 25001 transitions. [2024-11-09 19:42:33,745 INFO L78 Accepts]: Start accepts. Automaton has 13604 states and 25001 transitions. Word has length 614 [2024-11-09 19:42:33,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:33,746 INFO L471 AbstractCegarLoop]: Abstraction has 13604 states and 25001 transitions. [2024-11-09 19:42:33,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.66666666666667) internal successors, (735), 8 states have internal predecessors, (735), 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) [2024-11-09 19:42:33,746 INFO L276 IsEmpty]: Start isEmpty. Operand 13604 states and 25001 transitions. [2024-11-09 19:42:33,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2024-11-09 19:42:33,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:33,752 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:33,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 19:42:33,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 19:42:33,953 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:33,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:33,954 INFO L85 PathProgramCache]: Analyzing trace with hash 937334873, now seen corresponding path program 1 times [2024-11-09 19:42:33,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:33,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679233679] [2024-11-09 19:42:33,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:33,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:34,191 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2024-11-09 19:42:34,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:34,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679233679] [2024-11-09 19:42:34,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679233679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:34,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:34,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:42:34,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600760356] [2024-11-09 19:42:34,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:34,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:34,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:34,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:34,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:34,196 INFO L87 Difference]: Start difference. First operand 13604 states and 25001 transitions. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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) [2024-11-09 19:42:35,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:35,228 INFO L93 Difference]: Finished difference Result 26904 states and 49464 transitions. [2024-11-09 19:42:35,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:35,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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 639 [2024-11-09 19:42:35,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:35,247 INFO L225 Difference]: With dead ends: 26904 [2024-11-09 19:42:35,247 INFO L226 Difference]: Without dead ends: 13602 [2024-11-09 19:42:35,256 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 [2024-11-09 19:42:35,257 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 671 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:35,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 72 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:42:35,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13602 states. [2024-11-09 19:42:35,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13602 to 13602. [2024-11-09 19:42:35,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13602 states, 13601 states have (on average 1.837879567678847) internal successors, (24997), 13601 states have internal predecessors, (24997), 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) [2024-11-09 19:42:35,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13602 states to 13602 states and 24997 transitions. [2024-11-09 19:42:35,365 INFO L78 Accepts]: Start accepts. Automaton has 13602 states and 24997 transitions. Word has length 639 [2024-11-09 19:42:35,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:35,365 INFO L471 AbstractCegarLoop]: Abstraction has 13602 states and 24997 transitions. [2024-11-09 19:42:35,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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) [2024-11-09 19:42:35,365 INFO L276 IsEmpty]: Start isEmpty. Operand 13602 states and 24997 transitions. [2024-11-09 19:42:35,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2024-11-09 19:42:35,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:35,373 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:35,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 19:42:35,373 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:35,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:35,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1544485686, now seen corresponding path program 1 times [2024-11-09 19:42:35,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:35,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254178621] [2024-11-09 19:42:35,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:35,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:36,310 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 104 proven. 377 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-09 19:42:36,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:36,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254178621] [2024-11-09 19:42:36,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254178621] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:42:36,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794112937] [2024-11-09 19:42:36,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:36,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:42:36,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:42:36,313 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) [2024-11-09 19:42:36,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:42:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:36,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:42:36,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:42:36,633 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2024-11-09 19:42:36,633 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:42:36,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794112937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:36,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:42:36,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 19:42:36,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680486088] [2024-11-09 19:42:36,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:36,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:36,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:36,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:36,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:42:36,637 INFO L87 Difference]: Start difference. First operand 13602 states and 24997 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2024-11-09 19:42:37,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:37,666 INFO L93 Difference]: Finished difference Result 27198 states and 49985 transitions. [2024-11-09 19:42:37,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:37,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 654 [2024-11-09 19:42:37,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:37,680 INFO L225 Difference]: With dead ends: 27198 [2024-11-09 19:42:37,680 INFO L226 Difference]: Without dead ends: 13598 [2024-11-09 19:42:37,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:42:37,688 INFO L432 NwaCegarLoop]: 717 mSDtfsCounter, 508 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:37,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 757 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:42:37,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13598 states. [2024-11-09 19:42:37,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13598 to 12697. [2024-11-09 19:42:37,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12697 states, 12696 states have (on average 1.8050567107750473) internal successors, (22917), 12696 states have internal predecessors, (22917), 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) [2024-11-09 19:42:37,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12697 states to 12697 states and 22917 transitions. [2024-11-09 19:42:37,790 INFO L78 Accepts]: Start accepts. Automaton has 12697 states and 22917 transitions. Word has length 654 [2024-11-09 19:42:37,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:37,791 INFO L471 AbstractCegarLoop]: Abstraction has 12697 states and 22917 transitions. [2024-11-09 19:42:37,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2024-11-09 19:42:37,791 INFO L276 IsEmpty]: Start isEmpty. Operand 12697 states and 22917 transitions. [2024-11-09 19:42:37,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2024-11-09 19:42:37,797 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:37,797 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2024-11-09 19:42:37,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 19:42:37,998 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,SelfDestructingSolverStorable14 [2024-11-09 19:42:37,998 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:37,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:37,999 INFO L85 PathProgramCache]: Analyzing trace with hash -990711196, now seen corresponding path program 1 times [2024-11-09 19:42:37,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:37,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207644527] [2024-11-09 19:42:37,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:37,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:38,249 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2024-11-09 19:42:38,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:38,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207644527] [2024-11-09 19:42:38,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207644527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:38,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:38,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:42:38,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673223365] [2024-11-09 19:42:38,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:38,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:38,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:38,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:38,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:38,252 INFO L87 Difference]: Start difference. First operand 12697 states and 22917 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2024-11-09 19:42:39,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:39,270 INFO L93 Difference]: Finished difference Result 28088 states and 50762 transitions. [2024-11-09 19:42:39,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:39,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 683 [2024-11-09 19:42:39,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:39,286 INFO L225 Difference]: With dead ends: 28088 [2024-11-09 19:42:39,286 INFO L226 Difference]: Without dead ends: 15393 [2024-11-09 19:42:39,295 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 [2024-11-09 19:42:39,295 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 514 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:39,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 185 Invalid, 1363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:42:39,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15393 states. [2024-11-09 19:42:39,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15393 to 14792. [2024-11-09 19:42:39,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14792 states, 14791 states have (on average 1.8019741734838752) internal successors, (26653), 14791 states have internal predecessors, (26653), 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) [2024-11-09 19:42:39,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14792 states to 14792 states and 26653 transitions. [2024-11-09 19:42:39,410 INFO L78 Accepts]: Start accepts. Automaton has 14792 states and 26653 transitions. Word has length 683 [2024-11-09 19:42:39,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:39,410 INFO L471 AbstractCegarLoop]: Abstraction has 14792 states and 26653 transitions. [2024-11-09 19:42:39,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2024-11-09 19:42:39,411 INFO L276 IsEmpty]: Start isEmpty. Operand 14792 states and 26653 transitions. [2024-11-09 19:42:39,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2024-11-09 19:42:39,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:39,417 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:39,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 19:42:39,417 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:39,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:39,418 INFO L85 PathProgramCache]: Analyzing trace with hash 86873488, now seen corresponding path program 1 times [2024-11-09 19:42:39,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:39,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429620990] [2024-11-09 19:42:39,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:39,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:39,969 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 603 proven. 192 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-09 19:42:39,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:39,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429620990] [2024-11-09 19:42:39,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429620990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:42:39,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120737809] [2024-11-09 19:42:39,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:39,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:42:39,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:42:39,971 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) [2024-11-09 19:42:39,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 19:42:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:40,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:42:40,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:42:40,368 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2024-11-09 19:42:40,368 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:42:40,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120737809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:40,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:42:40,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:42:40,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884995969] [2024-11-09 19:42:40,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:40,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:40,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:40,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:40,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:42:40,370 INFO L87 Difference]: Start difference. First operand 14792 states and 26653 transitions. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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) [2024-11-09 19:42:41,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:41,574 INFO L93 Difference]: Finished difference Result 31398 states and 56629 transitions. [2024-11-09 19:42:41,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:41,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 691 [2024-11-09 19:42:41,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:41,590 INFO L225 Difference]: With dead ends: 31398 [2024-11-09 19:42:41,590 INFO L226 Difference]: Without dead ends: 16608 [2024-11-09 19:42:41,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:42:41,597 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 530 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:41,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 129 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:42:41,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16608 states. [2024-11-09 19:42:41,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16608 to 14491. [2024-11-09 19:42:41,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14491 states, 14490 states have (on average 1.801863354037267) internal successors, (26109), 14490 states have internal predecessors, (26109), 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) [2024-11-09 19:42:41,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14491 states to 14491 states and 26109 transitions. [2024-11-09 19:42:41,718 INFO L78 Accepts]: Start accepts. Automaton has 14491 states and 26109 transitions. Word has length 691 [2024-11-09 19:42:41,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:41,719 INFO L471 AbstractCegarLoop]: Abstraction has 14491 states and 26109 transitions. [2024-11-09 19:42:41,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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) [2024-11-09 19:42:41,719 INFO L276 IsEmpty]: Start isEmpty. Operand 14491 states and 26109 transitions. [2024-11-09 19:42:41,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2024-11-09 19:42:41,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:41,726 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2024-11-09 19:42:41,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 19:42:41,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:42:41,926 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:41,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:41,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1395051854, now seen corresponding path program 1 times [2024-11-09 19:42:41,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:41,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922335617] [2024-11-09 19:42:41,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:41,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:42,370 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2024-11-09 19:42:42,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:42,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922335617] [2024-11-09 19:42:42,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922335617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:42,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:42,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:42:42,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414146554] [2024-11-09 19:42:42,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:42,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:42:42,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:42,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:42:42,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:42:42,373 INFO L87 Difference]: Start difference. First operand 14491 states and 26109 transitions. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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) [2024-11-09 19:42:44,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:44,047 INFO L93 Difference]: Finished difference Result 31992 states and 57724 transitions. [2024-11-09 19:42:44,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:42:44,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 716 [2024-11-09 19:42:44,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:44,067 INFO L225 Difference]: With dead ends: 31992 [2024-11-09 19:42:44,067 INFO L226 Difference]: Without dead ends: 17803 [2024-11-09 19:42:44,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:42:44,076 INFO L432 NwaCegarLoop]: 625 mSDtfsCounter, 1125 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 2404 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 2571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 2404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:44,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 676 Invalid, 2571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 2404 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 19:42:44,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17803 states. [2024-11-09 19:42:44,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17803 to 16903. [2024-11-09 19:42:44,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16903 states, 16902 states have (on average 1.7990770323038694) internal successors, (30408), 16902 states have internal predecessors, (30408), 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) [2024-11-09 19:42:44,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16903 states to 16903 states and 30408 transitions. [2024-11-09 19:42:44,207 INFO L78 Accepts]: Start accepts. Automaton has 16903 states and 30408 transitions. Word has length 716 [2024-11-09 19:42:44,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:44,208 INFO L471 AbstractCegarLoop]: Abstraction has 16903 states and 30408 transitions. [2024-11-09 19:42:44,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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) [2024-11-09 19:42:44,208 INFO L276 IsEmpty]: Start isEmpty. Operand 16903 states and 30408 transitions. [2024-11-09 19:42:44,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2024-11-09 19:42:44,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:44,219 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:44,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 19:42:44,220 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:44,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:44,220 INFO L85 PathProgramCache]: Analyzing trace with hash -247175307, now seen corresponding path program 1 times [2024-11-09 19:42:44,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:44,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510539562] [2024-11-09 19:42:44,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:44,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:44,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1109 backedges. 810 proven. 52 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-09 19:42:44,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:44,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510539562] [2024-11-09 19:42:44,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510539562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:42:44,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665910361] [2024-11-09 19:42:44,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:44,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:42:44,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:42:44,946 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) [2024-11-09 19:42:44,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 19:42:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:45,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 19:42:45,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:42:45,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1109 backedges. 621 proven. 0 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2024-11-09 19:42:45,858 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:42:45,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665910361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:45,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:42:45,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 19:42:45,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706037827] [2024-11-09 19:42:45,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:45,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:42:45,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:45,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:42:45,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:42:45,861 INFO L87 Difference]: Start difference. First operand 16903 states and 30408 transitions. Second operand has 4 states, 4 states have (on average 119.5) internal successors, (478), 3 states have internal predecessors, (478), 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) [2024-11-09 19:42:47,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:47,532 INFO L93 Difference]: Finished difference Result 39821 states and 71715 transitions. [2024-11-09 19:42:47,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:42:47,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 119.5) internal successors, (478), 3 states have internal predecessors, (478), 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 844 [2024-11-09 19:42:47,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:47,558 INFO L225 Difference]: With dead ends: 39821 [2024-11-09 19:42:47,558 INFO L226 Difference]: Without dead ends: 23220 [2024-11-09 19:42:47,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 843 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:42:47,569 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 768 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 2629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:47,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 128 Invalid, 2629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 19:42:47,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23220 states. [2024-11-09 19:42:47,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23220 to 19607. [2024-11-09 19:42:47,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19607 states, 19606 states have (on average 1.797357951647455) internal successors, (35239), 19606 states have internal predecessors, (35239), 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) [2024-11-09 19:42:47,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19607 states to 19607 states and 35239 transitions. [2024-11-09 19:42:47,734 INFO L78 Accepts]: Start accepts. Automaton has 19607 states and 35239 transitions. Word has length 844 [2024-11-09 19:42:47,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:47,735 INFO L471 AbstractCegarLoop]: Abstraction has 19607 states and 35239 transitions. [2024-11-09 19:42:47,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.5) internal successors, (478), 3 states have internal predecessors, (478), 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) [2024-11-09 19:42:47,735 INFO L276 IsEmpty]: Start isEmpty. Operand 19607 states and 35239 transitions. [2024-11-09 19:42:47,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 927 [2024-11-09 19:42:47,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:47,752 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:47,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 19:42:47,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:42:47,954 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:47,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:47,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1294986593, now seen corresponding path program 1 times [2024-11-09 19:42:47,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:47,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16939675] [2024-11-09 19:42:47,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:47,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:48,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 800 proven. 0 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2024-11-09 19:42:48,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:48,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16939675] [2024-11-09 19:42:48,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16939675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:48,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:48,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:42:48,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094161276] [2024-11-09 19:42:48,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:48,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:42:48,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:48,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:42:48,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:42:48,379 INFO L87 Difference]: Start difference. First operand 19607 states and 35239 transitions. Second operand has 4 states, 4 states have (on average 143.5) internal successors, (574), 4 states have internal predecessors, (574), 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) [2024-11-09 19:42:49,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:49,849 INFO L93 Difference]: Finished difference Result 42817 states and 76985 transitions. [2024-11-09 19:42:49,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:42:49,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 143.5) internal successors, (574), 4 states have internal predecessors, (574), 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 926 [2024-11-09 19:42:49,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:49,874 INFO L225 Difference]: With dead ends: 42817 [2024-11-09 19:42:49,874 INFO L226 Difference]: Without dead ends: 23814 [2024-11-09 19:42:49,886 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:42:49,887 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 983 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 2396 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 2487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:49,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 141 Invalid, 2487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2396 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 19:42:49,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23814 states. [2024-11-09 19:42:50,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23814 to 19005. [2024-11-09 19:42:50,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19005 states, 19004 states have (on average 1.7972005893496106) internal successors, (34154), 19004 states have internal predecessors, (34154), 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) [2024-11-09 19:42:50,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19005 states to 19005 states and 34154 transitions. [2024-11-09 19:42:50,061 INFO L78 Accepts]: Start accepts. Automaton has 19005 states and 34154 transitions. Word has length 926 [2024-11-09 19:42:50,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:50,061 INFO L471 AbstractCegarLoop]: Abstraction has 19005 states and 34154 transitions. [2024-11-09 19:42:50,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.5) internal successors, (574), 4 states have internal predecessors, (574), 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) [2024-11-09 19:42:50,062 INFO L276 IsEmpty]: Start isEmpty. Operand 19005 states and 34154 transitions. [2024-11-09 19:42:50,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2024-11-09 19:42:50,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:50,076 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:50,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 19:42:50,077 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:50,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:50,077 INFO L85 PathProgramCache]: Analyzing trace with hash -2019935343, now seen corresponding path program 1 times [2024-11-09 19:42:50,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:50,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827702896] [2024-11-09 19:42:50,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:50,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:50,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 748 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-11-09 19:42:50,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:50,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827702896] [2024-11-09 19:42:50,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827702896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:50,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:50,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:42:50,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051250796] [2024-11-09 19:42:50,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:50,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:50,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:50,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:50,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:50,579 INFO L87 Difference]: Start difference. First operand 19005 states and 34154 transitions. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 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) [2024-11-09 19:42:51,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:51,571 INFO L93 Difference]: Finished difference Result 38601 states and 69481 transitions. [2024-11-09 19:42:51,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:51,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 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 931 [2024-11-09 19:42:51,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:51,594 INFO L225 Difference]: With dead ends: 38601 [2024-11-09 19:42:51,594 INFO L226 Difference]: Without dead ends: 22302 [2024-11-09 19:42:51,606 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 [2024-11-09 19:42:51,606 INFO L432 NwaCegarLoop]: 698 mSDtfsCounter, 546 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:51,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 739 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:42:51,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22302 states. [2024-11-09 19:42:51,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22302 to 20502. [2024-11-09 19:42:51,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20502 states, 20501 states have (on average 1.7963513974928051) internal successors, (36827), 20501 states have internal predecessors, (36827), 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) [2024-11-09 19:42:51,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20502 states to 20502 states and 36827 transitions. [2024-11-09 19:42:51,787 INFO L78 Accepts]: Start accepts. Automaton has 20502 states and 36827 transitions. Word has length 931 [2024-11-09 19:42:51,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:51,788 INFO L471 AbstractCegarLoop]: Abstraction has 20502 states and 36827 transitions. [2024-11-09 19:42:51,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 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) [2024-11-09 19:42:51,788 INFO L276 IsEmpty]: Start isEmpty. Operand 20502 states and 36827 transitions. [2024-11-09 19:42:51,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1086 [2024-11-09 19:42:51,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:51,804 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:51,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 19:42:51,804 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:51,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:51,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1326546655, now seen corresponding path program 1 times [2024-11-09 19:42:51,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:51,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965857206] [2024-11-09 19:42:51,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:51,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:52,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2271 backedges. 1384 proven. 52 refuted. 0 times theorem prover too weak. 835 trivial. 0 not checked. [2024-11-09 19:42:52,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:52,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965857206] [2024-11-09 19:42:52,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965857206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:42:52,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415601333] [2024-11-09 19:42:52,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:52,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:42:52,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:42:52,719 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:42:52,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 19:42:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:53,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:42:53,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:42:54,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2271 backedges. 1535 proven. 268 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2024-11-09 19:42:54,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:42:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2271 backedges. 966 proven. 0 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2024-11-09 19:42:54,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415601333] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 19:42:54,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 19:42:54,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4] total 8 [2024-11-09 19:42:54,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568964345] [2024-11-09 19:42:54,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:54,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:54,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:54,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:54,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 19:42:54,498 INFO L87 Difference]: Start difference. First operand 20502 states and 36827 transitions. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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) [2024-11-09 19:42:55,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:55,351 INFO L93 Difference]: Finished difference Result 33151 states and 59563 transitions. [2024-11-09 19:42:55,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:55,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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 1085 [2024-11-09 19:42:55,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:55,367 INFO L225 Difference]: With dead ends: 33151 [2024-11-09 19:42:55,368 INFO L226 Difference]: Without dead ends: 15055 [2024-11-09 19:42:55,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2173 GetRequests, 2167 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 19:42:55,377 INFO L432 NwaCegarLoop]: 586 mSDtfsCounter, 426 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:55,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 595 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 19:42:55,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15055 states. [2024-11-09 19:42:55,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15055 to 14155. [2024-11-09 19:42:55,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14155 states, 14154 states have (on average 1.7898120672601385) internal successors, (25333), 14154 states have internal predecessors, (25333), 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) [2024-11-09 19:42:55,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14155 states to 14155 states and 25333 transitions. [2024-11-09 19:42:55,484 INFO L78 Accepts]: Start accepts. Automaton has 14155 states and 25333 transitions. Word has length 1085 [2024-11-09 19:42:55,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:55,485 INFO L471 AbstractCegarLoop]: Abstraction has 14155 states and 25333 transitions. [2024-11-09 19:42:55,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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) [2024-11-09 19:42:55,485 INFO L276 IsEmpty]: Start isEmpty. Operand 14155 states and 25333 transitions. [2024-11-09 19:42:55,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1097 [2024-11-09 19:42:55,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:55,498 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:55,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 19:42:55,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-09 19:42:55,699 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:55,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:55,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1605110103, now seen corresponding path program 1 times [2024-11-09 19:42:55,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:55,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836472292] [2024-11-09 19:42:55,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:55,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2003 backedges. 1283 proven. 0 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2024-11-09 19:42:56,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:56,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836472292] [2024-11-09 19:42:56,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836472292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:56,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:56,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:42:56,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168556659] [2024-11-09 19:42:56,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:56,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:42:56,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:56,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:42:56,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:42:56,462 INFO L87 Difference]: Start difference. First operand 14155 states and 25333 transitions. Second operand has 4 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 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) [2024-11-09 19:42:57,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:57,947 INFO L93 Difference]: Finished difference Result 22884 states and 40960 transitions. [2024-11-09 19:42:57,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:42:57,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 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 1096 [2024-11-09 19:42:57,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:57,970 INFO L225 Difference]: With dead ends: 22884 [2024-11-09 19:42:57,970 INFO L226 Difference]: Without dead ends: 22881 [2024-11-09 19:42:57,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:42:57,974 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 834 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 2327 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 2421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:57,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 82 Invalid, 2421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2327 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 19:42:57,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22881 states. [2024-11-09 19:42:58,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22881 to 15359. [2024-11-09 19:42:58,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15359 states, 15358 states have (on average 1.7898814949863264) internal successors, (27489), 15358 states have internal predecessors, (27489), 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) [2024-11-09 19:42:58,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15359 states to 15359 states and 27489 transitions. [2024-11-09 19:42:58,201 INFO L78 Accepts]: Start accepts. Automaton has 15359 states and 27489 transitions. Word has length 1096 [2024-11-09 19:42:58,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:58,202 INFO L471 AbstractCegarLoop]: Abstraction has 15359 states and 27489 transitions. [2024-11-09 19:42:58,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 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) [2024-11-09 19:42:58,202 INFO L276 IsEmpty]: Start isEmpty. Operand 15359 states and 27489 transitions. [2024-11-09 19:42:58,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1193 [2024-11-09 19:42:58,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:58,230 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 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] [2024-11-09 19:42:58,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-09 19:42:58,230 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:58,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:58,231 INFO L85 PathProgramCache]: Analyzing trace with hash 2015813419, now seen corresponding path program 1 times [2024-11-09 19:42:58,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:58,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791238848] [2024-11-09 19:42:58,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:58,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:59,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2236 backedges. 259 proven. 1114 refuted. 0 times theorem prover too weak. 863 trivial. 0 not checked. [2024-11-09 19:42:59,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:59,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791238848] [2024-11-09 19:42:59,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791238848] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:42:59,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471583042] [2024-11-09 19:42:59,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:59,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:42:59,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:42:59,120 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:42:59,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 19:42:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:59,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 1350 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:42:59,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:43:03,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2236 backedges. 259 proven. 1114 refuted. 0 times theorem prover too weak. 863 trivial. 0 not checked. [2024-11-09 19:43:03,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:43:07,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2236 backedges. 259 proven. 1114 refuted. 0 times theorem prover too weak. 863 trivial. 0 not checked. [2024-11-09 19:43:07,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471583042] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:43:07,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:43:07,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-09 19:43:07,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59624266] [2024-11-09 19:43:07,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:43:07,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 19:43:07,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:43:07,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 19:43:07,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-11-09 19:43:07,400 INFO L87 Difference]: Start difference. First operand 15359 states and 27489 transitions. Second operand has 10 states, 10 states have (on average 144.7) internal successors, (1447), 9 states have internal predecessors, (1447), 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) [2024-11-09 19:43:11,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:43:11,490 INFO L93 Difference]: Finished difference Result 25890 states and 46381 transitions. [2024-11-09 19:43:11,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 19:43:11,490 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 144.7) internal successors, (1447), 9 states have internal predecessors, (1447), 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 1192 [2024-11-09 19:43:11,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:43:11,491 INFO L225 Difference]: With dead ends: 25890 [2024-11-09 19:43:11,491 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 19:43:11,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2386 GetRequests, 2378 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-11-09 19:43:11,499 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 2485 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 6191 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2485 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 6398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 6191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:43:11,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2485 Valid, 138 Invalid, 6398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 6191 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-09 19:43:11,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 19:43:11,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 19:43:11,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-11-09 19:43:11,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 19:43:11,500 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1192 [2024-11-09 19:43:11,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:43:11,500 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 19:43:11,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 144.7) internal successors, (1447), 9 states have internal predecessors, (1447), 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) [2024-11-09 19:43:11,501 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 19:43:11,501 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 19:43:11,503 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 19:43:11,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 19:43:11,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:43:11,706 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:43:11,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 19:43:18,189 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 19:43:18,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 07:43:18 BoogieIcfgContainer [2024-11-09 19:43:18,208 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 19:43:18,208 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 19:43:18,208 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 19:43:18,208 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 19:43:18,209 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:42:02" (3/4) ... [2024-11-09 19:43:18,211 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-09 19:43:18,240 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-11-09 19:43:18,243 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-09 19:43:18,245 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 19:43:18,247 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 19:43:18,407 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 19:43:18,408 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 19:43:18,408 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 19:43:18,408 INFO L158 Benchmark]: Toolchain (without parser) took 79333.77ms. Allocated memory was 159.4MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 115.4MB in the beginning and 1.0GB in the end (delta: -914.8MB). Peak memory consumption was 822.7MB. Max. memory is 16.1GB. [2024-11-09 19:43:18,408 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 91.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 19:43:18,409 INFO L158 Benchmark]: CACSL2BoogieTranslator took 694.71ms. Allocated memory is still 159.4MB. Free memory was 115.4MB in the beginning and 113.8MB in the end (delta: 1.7MB). Peak memory consumption was 89.0MB. Max. memory is 16.1GB. [2024-11-09 19:43:18,409 INFO L158 Benchmark]: Boogie Procedure Inliner took 132.64ms. Allocated memory is still 159.4MB. Free memory was 113.8MB in the beginning and 75.8MB in the end (delta: 38.0MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-11-09 19:43:18,409 INFO L158 Benchmark]: Boogie Preprocessor took 197.53ms. Allocated memory is still 159.4MB. Free memory was 75.8MB in the beginning and 67.7MB in the end (delta: 8.0MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. [2024-11-09 19:43:18,409 INFO L158 Benchmark]: IcfgBuilder took 2415.38ms. Allocated memory was 159.4MB in the beginning and 337.6MB in the end (delta: 178.3MB). Free memory was 67.2MB in the beginning and 185.7MB in the end (delta: -118.5MB). Peak memory consumption was 79.5MB. Max. memory is 16.1GB. [2024-11-09 19:43:18,409 INFO L158 Benchmark]: TraceAbstraction took 75688.55ms. Allocated memory was 337.6MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 185.7MB in the beginning and 1.1GB in the end (delta: -887.5MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-09 19:43:18,410 INFO L158 Benchmark]: Witness Printer took 199.62ms. Allocated memory is still 1.9GB. Free memory was 1.1GB in the beginning and 1.0GB in the end (delta: 43.0MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2024-11-09 19:43:18,411 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 91.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 694.71ms. Allocated memory is still 159.4MB. Free memory was 115.4MB in the beginning and 113.8MB in the end (delta: 1.7MB). Peak memory consumption was 89.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 132.64ms. Allocated memory is still 159.4MB. Free memory was 113.8MB in the beginning and 75.8MB in the end (delta: 38.0MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 197.53ms. Allocated memory is still 159.4MB. Free memory was 75.8MB in the beginning and 67.7MB in the end (delta: 8.0MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. * IcfgBuilder took 2415.38ms. Allocated memory was 159.4MB in the beginning and 337.6MB in the end (delta: 178.3MB). Free memory was 67.2MB in the beginning and 185.7MB in the end (delta: -118.5MB). Peak memory consumption was 79.5MB. Max. memory is 16.1GB. * TraceAbstraction took 75688.55ms. Allocated memory was 337.6MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 185.7MB in the beginning and 1.1GB in the end (delta: -887.5MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 199.62ms. Allocated memory is still 1.9GB. Free memory was 1.1GB in the beginning and 1.0GB in the end (delta: 43.0MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 176]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 427 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 69.1s, OverallIterations: 24, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 41.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21752 SdHoareTripleChecker+Valid, 38.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21752 mSDsluCounter, 10939 SdHoareTripleChecker+Invalid, 32.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1126 mSDsCounter, 4290 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47631 IncrementalHoareTripleChecker+Invalid, 51921 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4290 mSolverCounterUnsat, 9813 mSDtfsCounter, 47631 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8049 GetRequests, 7986 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20502occurred in iteration=21, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 24 MinimizatonAttempts, 32811 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 20.2s InterpolantComputationTime, 18996 NumberOfCodeBlocks, 18996 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 21854 ConstructedInterpolants, 796 QuantifiedInterpolants, 99684 SizeOfPredicates, 6 NumberOfNonLiveVariables, 5950 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 33 InterpolantComputations, 22 PerfectInterpolantSequences, 26499/30899 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1776]: Location Invariant Derived location invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-09 19:43:18,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE