./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem18_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/Problem18_label01.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 d0f957f5b0e83c1c14555e9ea8bf41ba11ff21748daf88fa4699e5464ac5d4ed --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 11:03:08,627 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 11:03:08,669 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 11:03:08,672 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 11:03:08,673 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 11:03:08,691 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 11:03:08,692 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 11:03:08,692 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 11:03:08,692 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 11:03:08,693 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 11:03:08,693 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 11:03:08,693 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 11:03:08,694 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 11:03:08,694 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 11:03:08,694 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 11:03:08,694 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 11:03:08,694 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 11:03:08,694 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 11:03:08,694 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 11:03:08,694 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 11:03:08,694 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 11:03:08,694 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 11:03:08,694 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 11:03:08,694 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 11:03:08,694 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 11:03:08,694 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 11:03:08,694 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 11:03:08,694 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 11:03:08,694 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 11:03:08,694 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 11:03:08,694 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 11:03:08,694 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 11:03:08,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 11:03:08,695 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 11:03:08,695 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 11:03:08,695 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 11:03:08,695 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 11:03:08,695 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 11:03:08,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 11:03:08,695 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 11:03:08,695 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 11:03:08,695 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 11:03:08,695 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 11:03:08,695 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> d0f957f5b0e83c1c14555e9ea8bf41ba11ff21748daf88fa4699e5464ac5d4ed [2025-03-03 11:03:08,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 11:03:08,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 11:03:08,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 11:03:08,915 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 11:03:08,915 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 11:03:08,916 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem18_label01.c [2025-03-03 11:03:10,036 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af5909c12/a96f716beb0849c88b1e9e8f999e85e9/FLAG2b751c8eb [2025-03-03 11:03:10,465 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 11:03:10,467 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label01.c [2025-03-03 11:03:10,492 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af5909c12/a96f716beb0849c88b1e9e8f999e85e9/FLAG2b751c8eb [2025-03-03 11:03:10,505 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af5909c12/a96f716beb0849c88b1e9e8f999e85e9 [2025-03-03 11:03:10,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 11:03:10,508 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 11:03:10,509 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 11:03:10,509 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 11:03:10,513 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 11:03:10,514 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:03:10" (1/1) ... [2025-03-03 11:03:10,515 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75254f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:03:10, skipping insertion in model container [2025-03-03 11:03:10,515 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:03:10" (1/1) ... [2025-03-03 11:03:10,575 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 11:03:10,705 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/Problem18_label01.c[2998,3011] [2025-03-03 11:03:11,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 11:03:11,057 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 11:03:11,069 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/Problem18_label01.c[2998,3011] [2025-03-03 11:03:11,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 11:03:11,286 INFO L204 MainTranslator]: Completed translation [2025-03-03 11:03:11,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:03:11 WrapperNode [2025-03-03 11:03:11,287 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 11:03:11,288 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 11:03:11,289 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 11:03:11,289 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 11:03:11,292 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:03:11" (1/1) ... [2025-03-03 11:03:11,324 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:03:11" (1/1) ... [2025-03-03 11:03:11,446 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4132 [2025-03-03 11:03:11,447 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 11:03:11,447 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 11:03:11,448 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 11:03:11,448 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 11:03:11,453 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:03:11" (1/1) ... [2025-03-03 11:03:11,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:03:11" (1/1) ... [2025-03-03 11:03:11,481 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:03:11" (1/1) ... [2025-03-03 11:03:11,583 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]. [2025-03-03 11:03:11,583 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:03:11" (1/1) ... [2025-03-03 11:03:11,583 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:03:11" (1/1) ... [2025-03-03 11:03:11,629 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:03:11" (1/1) ... [2025-03-03 11:03:11,640 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:03:11" (1/1) ... [2025-03-03 11:03:11,651 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:03:11" (1/1) ... [2025-03-03 11:03:11,659 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:03:11" (1/1) ... [2025-03-03 11:03:11,680 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 11:03:11,682 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 11:03:11,682 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 11:03:11,682 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 11:03:11,682 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:03:11" (1/1) ... [2025-03-03 11:03:11,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 11:03:11,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 11:03:11,705 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) [2025-03-03 11:03:11,711 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 [2025-03-03 11:03:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 11:03:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 11:03:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 11:03:11,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 11:03:11,777 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 11:03:11,779 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 11:03:14,402 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1647: havoc calculate_output_#t~ret8#1; [2025-03-03 11:03:14,403 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3060: havoc calculate_output2_#t~ret9#1; [2025-03-03 11:03:14,499 INFO L? ?]: Removed 639 outVars from TransFormulas that were not future-live. [2025-03-03 11:03:14,500 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 11:03:14,528 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 11:03:14,528 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 11:03:14,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:03:14 BoogieIcfgContainer [2025-03-03 11:03:14,531 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 11:03:14,533 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 11:03:14,533 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 11:03:14,537 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 11:03:14,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 11:03:10" (1/3) ... [2025-03-03 11:03:14,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520a754f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:03:14, skipping insertion in model container [2025-03-03 11:03:14,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:03:11" (2/3) ... [2025-03-03 11:03:14,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520a754f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:03:14, skipping insertion in model container [2025-03-03 11:03:14,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:03:14" (3/3) ... [2025-03-03 11:03:14,539 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem18_label01.c [2025-03-03 11:03:14,550 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 11:03:14,552 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem18_label01.c that has 1 procedures, 757 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 11:03:14,604 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 11:03:14,612 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;@4235ab20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 11:03:14,613 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 11:03:14,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 757 states, 755 states have (on average 1.9112582781456953) internal successors, (1443), 756 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:14,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-03 11:03:14,625 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:03:14,625 INFO L218 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] [2025-03-03 11:03:14,626 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:03:14,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:03:14,630 INFO L85 PathProgramCache]: Analyzing trace with hash 885959648, now seen corresponding path program 1 times [2025-03-03 11:03:14,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:03:14,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992848251] [2025-03-03 11:03:14,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:03:14,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:03:14,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-03 11:03:14,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-03 11:03:14,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:03:14,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:03:14,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 11:03:14,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:03:14,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992848251] [2025-03-03 11:03:14,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992848251] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:03:14,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 11:03:14,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 11:03:14,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991891680] [2025-03-03 11:03:14,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:03:14,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 11:03:14,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:03:14,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 11:03:14,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 11:03:14,847 INFO L87 Difference]: Start difference. First operand has 757 states, 755 states have (on average 1.9112582781456953) internal successors, (1443), 756 states have internal predecessors, (1443), 0 states have call successors, (0), 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 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:17,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:03:17,312 INFO L93 Difference]: Finished difference Result 2205 states and 4263 transitions. [2025-03-03 11:03:17,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 11:03:17,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-03-03 11:03:17,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:03:17,325 INFO L225 Difference]: With dead ends: 2205 [2025-03-03 11:03:17,325 INFO L226 Difference]: Without dead ends: 1384 [2025-03-03 11:03:17,329 INFO L434 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 [2025-03-03 11:03:17,330 INFO L435 NwaCegarLoop]: 282 mSDtfsCounter, 722 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 967 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 967 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-03 11:03:17,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 291 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [967 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-03 11:03:17,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2025-03-03 11:03:17,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2025-03-03 11:03:17,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 1.7339117859725235) internal successors, (2398), 1383 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:17,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2398 transitions. [2025-03-03 11:03:17,420 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2398 transitions. Word has length 26 [2025-03-03 11:03:17,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:03:17,420 INFO L471 AbstractCegarLoop]: Abstraction has 1384 states and 2398 transitions. [2025-03-03 11:03:17,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:17,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2398 transitions. [2025-03-03 11:03:17,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-03 11:03:17,422 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:03:17,422 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:03:17,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 11:03:17,423 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:03:17,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:03:17,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1167852151, now seen corresponding path program 1 times [2025-03-03 11:03:17,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:03:17,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188730234] [2025-03-03 11:03:17,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:03:17,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:03:17,440 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-03 11:03:17,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-03 11:03:17,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:03:17,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:03:17,604 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 11:03:17,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:03:17,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188730234] [2025-03-03 11:03:17,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188730234] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:03:17,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 11:03:17,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 11:03:17,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836160321] [2025-03-03 11:03:17,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:03:17,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 11:03:17,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:03:17,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 11:03:17,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 11:03:17,606 INFO L87 Difference]: Start difference. First operand 1384 states and 2398 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:19,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:03:19,658 INFO L93 Difference]: Finished difference Result 4146 states and 7189 transitions. [2025-03-03 11:03:19,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 11:03:19,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2025-03-03 11:03:19,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:03:19,667 INFO L225 Difference]: With dead ends: 4146 [2025-03-03 11:03:19,667 INFO L226 Difference]: Without dead ends: 2764 [2025-03-03 11:03:19,668 INFO L434 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 [2025-03-03 11:03:19,669 INFO L435 NwaCegarLoop]: 568 mSDtfsCounter, 676 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 2628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-03 11:03:19,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 573 Invalid, 2628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1710 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-03 11:03:19,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2025-03-03 11:03:19,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2025-03-03 11:03:19,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2763 states have (on average 1.430691277596815) internal successors, (3953), 2763 states have internal predecessors, (3953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:19,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3953 transitions. [2025-03-03 11:03:19,704 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3953 transitions. Word has length 95 [2025-03-03 11:03:19,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:03:19,705 INFO L471 AbstractCegarLoop]: Abstraction has 2764 states and 3953 transitions. [2025-03-03 11:03:19,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:19,705 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3953 transitions. [2025-03-03 11:03:19,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-03-03 11:03:19,707 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:03:19,707 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:03:19,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 11:03:19,707 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:03:19,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:03:19,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1939263073, now seen corresponding path program 1 times [2025-03-03 11:03:19,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:03:19,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645914962] [2025-03-03 11:03:19,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:03:19,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:03:19,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-03-03 11:03:19,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-03-03 11:03:19,730 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:03:19,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:03:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 11:03:19,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:03:19,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645914962] [2025-03-03 11:03:19,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645914962] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:03:19,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 11:03:19,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 11:03:19,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329384493] [2025-03-03 11:03:19,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:03:19,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 11:03:19,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:03:19,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 11:03:19,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 11:03:19,895 INFO L87 Difference]: Start difference. First operand 2764 states and 3953 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:21,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:03:21,890 INFO L93 Difference]: Finished difference Result 8288 states and 11855 transitions. [2025-03-03 11:03:21,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 11:03:21,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2025-03-03 11:03:21,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:03:21,906 INFO L225 Difference]: With dead ends: 8288 [2025-03-03 11:03:21,906 INFO L226 Difference]: Without dead ends: 5526 [2025-03-03 11:03:21,909 INFO L434 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 [2025-03-03 11:03:21,910 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 691 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 2666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-03 11:03:21,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 434 Invalid, 2666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-03 11:03:21,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5526 states. [2025-03-03 11:03:21,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5526 to 5524. [2025-03-03 11:03:21,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5524 states, 5523 states have (on average 1.2820930653630274) internal successors, (7081), 5523 states have internal predecessors, (7081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:21,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5524 states to 5524 states and 7081 transitions. [2025-03-03 11:03:21,978 INFO L78 Accepts]: Start accepts. Automaton has 5524 states and 7081 transitions. Word has length 111 [2025-03-03 11:03:21,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:03:21,979 INFO L471 AbstractCegarLoop]: Abstraction has 5524 states and 7081 transitions. [2025-03-03 11:03:21,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:21,979 INFO L276 IsEmpty]: Start isEmpty. Operand 5524 states and 7081 transitions. [2025-03-03 11:03:21,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-03 11:03:21,980 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:03:21,980 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:03:21,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 11:03:21,981 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:03:21,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:03:21,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1140410542, now seen corresponding path program 1 times [2025-03-03 11:03:21,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:03:21,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262852038] [2025-03-03 11:03:21,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:03:21,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:03:21,992 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-03 11:03:22,001 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-03 11:03:22,001 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:03:22,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:03:22,326 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 11:03:22,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:03:22,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262852038] [2025-03-03 11:03:22,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262852038] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:03:22,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 11:03:22,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 11:03:22,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281635323] [2025-03-03 11:03:22,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:03:22,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 11:03:22,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:03:22,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 11:03:22,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 11:03:22,328 INFO L87 Difference]: Start difference. First operand 5524 states and 7081 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:25,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:03:25,035 INFO L93 Difference]: Finished difference Result 15188 states and 18712 transitions. [2025-03-03 11:03:25,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 11:03:25,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2025-03-03 11:03:25,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:03:25,056 INFO L225 Difference]: With dead ends: 15188 [2025-03-03 11:03:25,056 INFO L226 Difference]: Without dead ends: 9666 [2025-03-03 11:03:25,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 11:03:25,063 INFO L435 NwaCegarLoop]: 631 mSDtfsCounter, 1875 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 4380 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1875 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 4486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 4380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-03 11:03:25,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1875 Valid, 649 Invalid, 4486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 4380 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-03 11:03:25,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2025-03-03 11:03:25,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 8974. [2025-03-03 11:03:25,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8974 states, 8973 states have (on average 1.2006018054162488) internal successors, (10773), 8973 states have internal predecessors, (10773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:25,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8974 states to 8974 states and 10773 transitions. [2025-03-03 11:03:25,173 INFO L78 Accepts]: Start accepts. Automaton has 8974 states and 10773 transitions. Word has length 144 [2025-03-03 11:03:25,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:03:25,174 INFO L471 AbstractCegarLoop]: Abstraction has 8974 states and 10773 transitions. [2025-03-03 11:03:25,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:25,174 INFO L276 IsEmpty]: Start isEmpty. Operand 8974 states and 10773 transitions. [2025-03-03 11:03:25,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2025-03-03 11:03:25,177 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:03:25,177 INFO L218 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-03-03 11:03:25,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 11:03:25,178 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:03:25,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:03:25,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1269315420, now seen corresponding path program 1 times [2025-03-03 11:03:25,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:03:25,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617338382] [2025-03-03 11:03:25,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:03:25,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:03:25,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 326 statements into 1 equivalence classes. [2025-03-03 11:03:25,231 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 326 of 326 statements. [2025-03-03 11:03:25,231 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:03:25,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:03:25,570 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 11:03:25,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:03:25,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617338382] [2025-03-03 11:03:25,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617338382] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:03:25,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 11:03:25,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 11:03:25,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408421412] [2025-03-03 11:03:25,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:03:25,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 11:03:25,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:03:25,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 11:03:25,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 11:03:25,573 INFO L87 Difference]: Start difference. First operand 8974 states and 10773 transitions. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:27,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:03:27,472 INFO L93 Difference]: Finished difference Result 20761 states and 24426 transitions. [2025-03-03 11:03:27,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 11:03:27,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 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 326 [2025-03-03 11:03:27,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:03:27,500 INFO L225 Difference]: With dead ends: 20761 [2025-03-03 11:03:27,501 INFO L226 Difference]: Without dead ends: 11736 [2025-03-03 11:03:27,506 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 11:03:27,506 INFO L435 NwaCegarLoop]: 625 mSDtfsCounter, 515 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3039 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 3241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 3039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-03 11:03:27,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 639 Invalid, 3241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 3039 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-03 11:03:27,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11736 states. [2025-03-03 11:03:27,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11736 to 11734. [2025-03-03 11:03:27,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11734 states, 11733 states have (on average 1.1211113952100913) internal successors, (13154), 11733 states have internal predecessors, (13154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:27,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11734 states to 11734 states and 13154 transitions. [2025-03-03 11:03:27,643 INFO L78 Accepts]: Start accepts. Automaton has 11734 states and 13154 transitions. Word has length 326 [2025-03-03 11:03:27,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:03:27,644 INFO L471 AbstractCegarLoop]: Abstraction has 11734 states and 13154 transitions. [2025-03-03 11:03:27,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:27,644 INFO L276 IsEmpty]: Start isEmpty. Operand 11734 states and 13154 transitions. [2025-03-03 11:03:27,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2025-03-03 11:03:27,656 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:03:27,657 INFO L218 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:03:27,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 11:03:27,657 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:03:27,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:03:27,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1074086872, now seen corresponding path program 1 times [2025-03-03 11:03:27,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:03:27,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454208462] [2025-03-03 11:03:27,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:03:27,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:03:27,711 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 840 statements into 1 equivalence classes. [2025-03-03 11:03:27,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 840 of 840 statements. [2025-03-03 11:03:27,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:03:27,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:03:28,470 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2025-03-03 11:03:28,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:03:28,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454208462] [2025-03-03 11:03:28,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454208462] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 11:03:28,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166005194] [2025-03-03 11:03:28,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:03:28,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 11:03:28,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 11:03:28,475 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) [2025-03-03 11:03:28,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 11:03:28,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 840 statements into 1 equivalence classes. [2025-03-03 11:03:28,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 840 of 840 statements. [2025-03-03 11:03:28,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:03:28,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:03:28,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 11:03:28,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 11:03:29,542 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2025-03-03 11:03:29,543 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 11:03:29,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166005194] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:03:29,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 11:03:29,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2025-03-03 11:03:29,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864358210] [2025-03-03 11:03:29,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:03:29,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 11:03:29,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:03:29,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 11:03:29,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 11:03:29,545 INFO L87 Difference]: Start difference. First operand 11734 states and 13154 transitions. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 2 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:30,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:03:30,998 INFO L93 Difference]: Finished difference Result 29676 states and 33819 transitions. [2025-03-03 11:03:30,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 11:03:30,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 2 states have internal predecessors, (520), 0 states have call successors, (0), 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 840 [2025-03-03 11:03:31,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:03:31,030 INFO L225 Difference]: With dead ends: 29676 [2025-03-03 11:03:31,031 INFO L226 Difference]: Without dead ends: 17944 [2025-03-03 11:03:31,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 842 GetRequests, 839 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 11:03:31,043 INFO L435 NwaCegarLoop]: 384 mSDtfsCounter, 181 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1998 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 2367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 1998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-03 11:03:31,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 390 Invalid, 2367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 1998 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-03 11:03:31,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17944 states. [2025-03-03 11:03:31,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17944 to 16564. [2025-03-03 11:03:31,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16564 states, 16563 states have (on average 1.1191209321982734) internal successors, (18536), 16563 states have internal predecessors, (18536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:31,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16564 states to 16564 states and 18536 transitions. [2025-03-03 11:03:31,290 INFO L78 Accepts]: Start accepts. Automaton has 16564 states and 18536 transitions. Word has length 840 [2025-03-03 11:03:31,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:03:31,291 INFO L471 AbstractCegarLoop]: Abstraction has 16564 states and 18536 transitions. [2025-03-03 11:03:31,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 2 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:31,291 INFO L276 IsEmpty]: Start isEmpty. Operand 16564 states and 18536 transitions. [2025-03-03 11:03:31,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2025-03-03 11:03:31,311 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:03:31,311 INFO L218 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:03:31,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 11:03:31,516 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,SelfDestructingSolverStorable5 [2025-03-03 11:03:31,516 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:03:31,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:03:31,517 INFO L85 PathProgramCache]: Analyzing trace with hash -391831191, now seen corresponding path program 1 times [2025-03-03 11:03:31,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:03:31,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113044845] [2025-03-03 11:03:31,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:03:31,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:03:31,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 925 statements into 1 equivalence classes. [2025-03-03 11:03:31,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 925 of 925 statements. [2025-03-03 11:03:31,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:03:31,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:03:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2025-03-03 11:03:32,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:03:32,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113044845] [2025-03-03 11:03:32,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113044845] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:03:32,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 11:03:32,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 11:03:32,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972191263] [2025-03-03 11:03:32,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:03:32,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 11:03:32,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:03:32,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 11:03:32,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 11:03:32,127 INFO L87 Difference]: Start difference. First operand 16564 states and 18536 transitions. Second operand has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 2 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:33,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:03:33,625 INFO L93 Difference]: Finished difference Result 37956 states and 42428 transitions. [2025-03-03 11:03:33,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 11:03:33,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 2 states have internal predecessors, (544), 0 states have call successors, (0), 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 925 [2025-03-03 11:03:33,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:03:33,695 INFO L225 Difference]: With dead ends: 37956 [2025-03-03 11:03:33,696 INFO L226 Difference]: Without dead ends: 21394 [2025-03-03 11:03:33,703 INFO L434 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 [2025-03-03 11:03:33,704 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 249 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 2308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-03 11:03:33,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 77 Invalid, 2308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-03 11:03:33,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21394 states. [2025-03-03 11:03:33,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21394 to 21394. [2025-03-03 11:03:33,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21394 states, 21393 states have (on average 1.1002196980320667) internal successors, (23537), 21393 states have internal predecessors, (23537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:33,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21394 states to 21394 states and 23537 transitions. [2025-03-03 11:03:33,877 INFO L78 Accepts]: Start accepts. Automaton has 21394 states and 23537 transitions. Word has length 925 [2025-03-03 11:03:33,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:03:33,879 INFO L471 AbstractCegarLoop]: Abstraction has 21394 states and 23537 transitions. [2025-03-03 11:03:33,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 2 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:33,879 INFO L276 IsEmpty]: Start isEmpty. Operand 21394 states and 23537 transitions. [2025-03-03 11:03:33,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2025-03-03 11:03:33,885 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:03:33,886 INFO L218 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:03:33,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 11:03:33,886 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:03:33,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:03:33,888 INFO L85 PathProgramCache]: Analyzing trace with hash -699603638, now seen corresponding path program 1 times [2025-03-03 11:03:33,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:03:33,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235745761] [2025-03-03 11:03:33,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:03:33,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:03:33,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 958 statements into 1 equivalence classes. [2025-03-03 11:03:33,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 958 of 958 statements. [2025-03-03 11:03:33,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:03:33,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:03:34,685 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2025-03-03 11:03:34,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:03:34,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235745761] [2025-03-03 11:03:34,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235745761] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:03:34,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 11:03:34,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 11:03:34,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596179227] [2025-03-03 11:03:34,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:03:34,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 11:03:34,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:03:34,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 11:03:34,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 11:03:34,689 INFO L87 Difference]: Start difference. First operand 21394 states and 23537 transitions. Second operand has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:36,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:03:36,263 INFO L93 Difference]: Finished difference Result 51756 states and 57380 transitions. [2025-03-03 11:03:36,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 11:03:36,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 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 958 [2025-03-03 11:03:36,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:03:36,300 INFO L225 Difference]: With dead ends: 51756 [2025-03-03 11:03:36,301 INFO L226 Difference]: Without dead ends: 30364 [2025-03-03 11:03:36,317 INFO L434 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 [2025-03-03 11:03:36,318 INFO L435 NwaCegarLoop]: 973 mSDtfsCounter, 577 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1955 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-03 11:03:36,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 979 Invalid, 2304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1955 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-03 11:03:36,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30364 states. [2025-03-03 11:03:36,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30364 to 30364. [2025-03-03 11:03:36,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30364 states, 30363 states have (on average 1.0881665184599678) internal successors, (33040), 30363 states have internal predecessors, (33040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:36,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30364 states to 30364 states and 33040 transitions. [2025-03-03 11:03:36,604 INFO L78 Accepts]: Start accepts. Automaton has 30364 states and 33040 transitions. Word has length 958 [2025-03-03 11:03:36,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:03:36,605 INFO L471 AbstractCegarLoop]: Abstraction has 30364 states and 33040 transitions. [2025-03-03 11:03:36,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:36,606 INFO L276 IsEmpty]: Start isEmpty. Operand 30364 states and 33040 transitions. [2025-03-03 11:03:36,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2025-03-03 11:03:36,611 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:03:36,611 INFO L218 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:03:36,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 11:03:36,612 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:03:36,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:03:36,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1617853687, now seen corresponding path program 1 times [2025-03-03 11:03:36,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:03:36,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644196200] [2025-03-03 11:03:36,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:03:36,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:03:36,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 965 statements into 1 equivalence classes. [2025-03-03 11:03:36,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 965 of 965 statements. [2025-03-03 11:03:36,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:03:36,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:03:37,674 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 321 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 11:03:37,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:03:37,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644196200] [2025-03-03 11:03:37,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644196200] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 11:03:37,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625707835] [2025-03-03 11:03:37,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:03:37,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 11:03:37,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 11:03:37,677 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) [2025-03-03 11:03:37,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 11:03:37,752 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 965 statements into 1 equivalence classes. [2025-03-03 11:03:37,862 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 965 of 965 statements. [2025-03-03 11:03:37,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:03:37,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:03:37,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 11:03:37,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 11:03:37,911 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2025-03-03 11:03:37,911 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 11:03:37,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625707835] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:03:37,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 11:03:37,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2025-03-03 11:03:37,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039846074] [2025-03-03 11:03:37,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:03:37,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 11:03:37,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:03:37,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 11:03:37,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-03 11:03:37,913 INFO L87 Difference]: Start difference. First operand 30364 states and 33040 transitions. Second operand has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:39,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:03:39,319 INFO L93 Difference]: Finished difference Result 60726 states and 66078 transitions. [2025-03-03 11:03:39,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 11:03:39,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 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 965 [2025-03-03 11:03:39,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:03:39,350 INFO L225 Difference]: With dead ends: 60726 [2025-03-03 11:03:39,351 INFO L226 Difference]: Without dead ends: 30364 [2025-03-03 11:03:39,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 971 GetRequests, 965 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-03 11:03:39,365 INFO L435 NwaCegarLoop]: 773 mSDtfsCounter, 771 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1974 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 2165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-03 11:03:39,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 780 Invalid, 2165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1974 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-03 11:03:39,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30364 states. [2025-03-03 11:03:39,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30364 to 30364. [2025-03-03 11:03:39,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30364 states, 30363 states have (on average 1.0728188914138919) internal successors, (32574), 30363 states have internal predecessors, (32574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:39,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30364 states to 30364 states and 32574 transitions. [2025-03-03 11:03:39,694 INFO L78 Accepts]: Start accepts. Automaton has 30364 states and 32574 transitions. Word has length 965 [2025-03-03 11:03:39,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:03:39,695 INFO L471 AbstractCegarLoop]: Abstraction has 30364 states and 32574 transitions. [2025-03-03 11:03:39,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:39,695 INFO L276 IsEmpty]: Start isEmpty. Operand 30364 states and 32574 transitions. [2025-03-03 11:03:39,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1096 [2025-03-03 11:03:39,711 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:03:39,711 INFO L218 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:03:39,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 11:03:39,912 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,SelfDestructingSolverStorable8 [2025-03-03 11:03:39,912 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:03:39,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:03:39,913 INFO L85 PathProgramCache]: Analyzing trace with hash -844000274, now seen corresponding path program 1 times [2025-03-03 11:03:39,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:03:39,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677748200] [2025-03-03 11:03:39,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:03:39,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:03:39,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1095 statements into 1 equivalence classes. [2025-03-03 11:03:40,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1095 of 1095 statements. [2025-03-03 11:03:40,041 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:03:40,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:03:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 480 proven. 612 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-03 11:03:41,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:03:41,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677748200] [2025-03-03 11:03:41,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677748200] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 11:03:41,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752881743] [2025-03-03 11:03:41,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:03:41,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 11:03:41,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 11:03:41,142 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) [2025-03-03 11:03:41,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 11:03:41,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1095 statements into 1 equivalence classes. [2025-03-03 11:03:41,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1095 of 1095 statements. [2025-03-03 11:03:41,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:03:41,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:03:41,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 11:03:41,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 11:03:41,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 454 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2025-03-03 11:03:41,456 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 11:03:41,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752881743] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:03:41,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 11:03:41,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2025-03-03 11:03:41,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754650489] [2025-03-03 11:03:41,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:03:41,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 11:03:41,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:03:41,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 11:03:41,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2025-03-03 11:03:41,458 INFO L87 Difference]: Start difference. First operand 30364 states and 32574 transitions. Second operand has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:42,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:03:42,956 INFO L93 Difference]: Finished difference Result 67626 states and 73337 transitions. [2025-03-03 11:03:42,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 11:03:42,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 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 1095 [2025-03-03 11:03:42,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:03:42,997 INFO L225 Difference]: With dead ends: 67626 [2025-03-03 11:03:42,997 INFO L226 Difference]: Without dead ends: 37264 [2025-03-03 11:03:43,019 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1102 GetRequests, 1095 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2025-03-03 11:03:43,019 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 699 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1821 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 1821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-03 11:03:43,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 165 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 1821 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-03 11:03:43,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37264 states. [2025-03-03 11:03:43,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37264 to 37264. [2025-03-03 11:03:43,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37264 states, 37263 states have (on average 1.0753830877814454) internal successors, (40072), 37263 states have internal predecessors, (40072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:43,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37264 states to 37264 states and 40072 transitions. [2025-03-03 11:03:43,309 INFO L78 Accepts]: Start accepts. Automaton has 37264 states and 40072 transitions. Word has length 1095 [2025-03-03 11:03:43,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:03:43,310 INFO L471 AbstractCegarLoop]: Abstraction has 37264 states and 40072 transitions. [2025-03-03 11:03:43,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:43,310 INFO L276 IsEmpty]: Start isEmpty. Operand 37264 states and 40072 transitions. [2025-03-03 11:03:43,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1102 [2025-03-03 11:03:43,318 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:03:43,319 INFO L218 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:03:43,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-03 11:03:43,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 11:03:43,520 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:03:43,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:03:43,520 INFO L85 PathProgramCache]: Analyzing trace with hash 506888287, now seen corresponding path program 1 times [2025-03-03 11:03:43,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:03:43,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857538139] [2025-03-03 11:03:43,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:03:43,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:03:43,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1101 statements into 1 equivalence classes. [2025-03-03 11:03:43,608 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1101 of 1101 statements. [2025-03-03 11:03:43,609 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:03:43,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:03:44,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1192 backedges. 380 proven. 555 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2025-03-03 11:03:44,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:03:44,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857538139] [2025-03-03 11:03:44,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857538139] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 11:03:44,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478778981] [2025-03-03 11:03:44,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:03:44,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 11:03:44,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 11:03:44,487 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) [2025-03-03 11:03:44,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 11:03:44,625 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1101 statements into 1 equivalence classes. [2025-03-03 11:03:44,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1101 of 1101 statements. [2025-03-03 11:03:44,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:03:44,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:03:44,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 11:03:44,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 11:03:44,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1192 backedges. 469 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2025-03-03 11:03:44,910 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 11:03:44,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478778981] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:03:44,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 11:03:44,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-03-03 11:03:44,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189862209] [2025-03-03 11:03:44,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:03:44,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 11:03:44,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:03:44,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 11:03:44,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 11:03:44,912 INFO L87 Difference]: Start difference. First operand 37264 states and 40072 transitions. Second operand has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:46,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:03:46,481 INFO L93 Difference]: Finished difference Result 84186 states and 91363 transitions. [2025-03-03 11:03:46,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 11:03:46,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 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 1101 [2025-03-03 11:03:46,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:03:46,535 INFO L225 Difference]: With dead ends: 84186 [2025-03-03 11:03:46,535 INFO L226 Difference]: Without dead ends: 44854 [2025-03-03 11:03:46,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1106 GetRequests, 1101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 11:03:46,560 INFO L435 NwaCegarLoop]: 967 mSDtfsCounter, 649 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 2271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-03 11:03:46,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 973 Invalid, 2271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-03 11:03:46,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44854 states. [2025-03-03 11:03:46,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44854 to 39334. [2025-03-03 11:03:46,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39334 states, 39333 states have (on average 1.0529072280273561) internal successors, (41414), 39333 states have internal predecessors, (41414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:46,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39334 states to 39334 states and 41414 transitions. [2025-03-03 11:03:46,858 INFO L78 Accepts]: Start accepts. Automaton has 39334 states and 41414 transitions. Word has length 1101 [2025-03-03 11:03:46,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:03:46,859 INFO L471 AbstractCegarLoop]: Abstraction has 39334 states and 41414 transitions. [2025-03-03 11:03:46,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:46,860 INFO L276 IsEmpty]: Start isEmpty. Operand 39334 states and 41414 transitions. [2025-03-03 11:03:46,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1192 [2025-03-03 11:03:46,871 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:03:46,871 INFO L218 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:03:46,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-03 11:03:47,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 11:03:47,072 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:03:47,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:03:47,073 INFO L85 PathProgramCache]: Analyzing trace with hash 337148429, now seen corresponding path program 1 times [2025-03-03 11:03:47,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:03:47,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128432530] [2025-03-03 11:03:47,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:03:47,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:03:47,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1191 statements into 1 equivalence classes. [2025-03-03 11:03:47,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1191 of 1191 statements. [2025-03-03 11:03:47,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:03:47,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:03:47,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 801 proven. 0 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2025-03-03 11:03:47,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:03:47,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128432530] [2025-03-03 11:03:47,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128432530] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:03:47,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 11:03:47,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 11:03:47,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46846027] [2025-03-03 11:03:47,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:03:47,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 11:03:47,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:03:47,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 11:03:47,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 11:03:47,573 INFO L87 Difference]: Start difference. First operand 39334 states and 41414 transitions. Second operand has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:48,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:03:48,744 INFO L93 Difference]: Finished difference Result 84876 states and 89551 transitions. [2025-03-03 11:03:48,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 11:03:48,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 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 1191 [2025-03-03 11:03:48,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:03:48,791 INFO L225 Difference]: With dead ends: 84876 [2025-03-03 11:03:48,791 INFO L226 Difference]: Without dead ends: 46234 [2025-03-03 11:03:48,816 INFO L434 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 [2025-03-03 11:03:48,817 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 632 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 1811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-03 11:03:48,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 950 Invalid, 1811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1675 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-03 11:03:48,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46234 states. [2025-03-03 11:03:49,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46234 to 45544. [2025-03-03 11:03:49,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45544 states, 45543 states have (on average 1.0515337153898514) internal successors, (47890), 45543 states have internal predecessors, (47890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:49,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45544 states to 45544 states and 47890 transitions. [2025-03-03 11:03:49,164 INFO L78 Accepts]: Start accepts. Automaton has 45544 states and 47890 transitions. Word has length 1191 [2025-03-03 11:03:49,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:03:49,165 INFO L471 AbstractCegarLoop]: Abstraction has 45544 states and 47890 transitions. [2025-03-03 11:03:49,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:49,165 INFO L276 IsEmpty]: Start isEmpty. Operand 45544 states and 47890 transitions. [2025-03-03 11:03:49,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1241 [2025-03-03 11:03:49,176 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:03:49,177 INFO L218 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:03:49,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-03 11:03:49,177 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:03:49,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:03:49,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1252674156, now seen corresponding path program 1 times [2025-03-03 11:03:49,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:03:49,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484536920] [2025-03-03 11:03:49,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:03:49,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:03:49,225 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1240 statements into 1 equivalence classes. [2025-03-03 11:03:49,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1240 of 1240 statements. [2025-03-03 11:03:49,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:03:49,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:03:51,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1715 backedges. 923 proven. 768 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 11:03:51,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:03:51,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484536920] [2025-03-03 11:03:51,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484536920] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 11:03:51,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297229413] [2025-03-03 11:03:51,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:03:51,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 11:03:51,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 11:03:51,019 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) [2025-03-03 11:03:51,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 11:03:51,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1240 statements into 1 equivalence classes. [2025-03-03 11:03:51,242 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1240 of 1240 statements. [2025-03-03 11:03:51,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:03:51,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:03:51,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-03 11:03:51,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 11:03:51,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1715 backedges. 1019 proven. 0 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked. [2025-03-03 11:03:51,926 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 11:03:51,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297229413] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:03:51,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 11:03:51,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-03 11:03:51,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203306277] [2025-03-03 11:03:51,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:03:51,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 11:03:51,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:03:51,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 11:03:51,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2025-03-03 11:03:51,929 INFO L87 Difference]: Start difference. First operand 45544 states and 47890 transitions. Second operand has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:53,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:03:53,558 INFO L93 Difference]: Finished difference Result 90396 states and 95087 transitions. [2025-03-03 11:03:53,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 11:03:53,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 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 1240 [2025-03-03 11:03:53,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:03:53,599 INFO L225 Difference]: With dead ends: 90396 [2025-03-03 11:03:53,600 INFO L226 Difference]: Without dead ends: 45544 [2025-03-03 11:03:53,625 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1250 GetRequests, 1239 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-03-03 11:03:53,625 INFO L435 NwaCegarLoop]: 990 mSDtfsCounter, 781 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-03 11:03:53,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1648 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-03 11:03:53,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45544 states. [2025-03-03 11:03:53,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45544 to 45544. [2025-03-03 11:03:53,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45544 states, 45543 states have (on average 1.0510726126956942) internal successors, (47869), 45543 states have internal predecessors, (47869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:54,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45544 states to 45544 states and 47869 transitions. [2025-03-03 11:03:54,060 INFO L78 Accepts]: Start accepts. Automaton has 45544 states and 47869 transitions. Word has length 1240 [2025-03-03 11:03:54,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:03:54,060 INFO L471 AbstractCegarLoop]: Abstraction has 45544 states and 47869 transitions. [2025-03-03 11:03:54,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:54,060 INFO L276 IsEmpty]: Start isEmpty. Operand 45544 states and 47869 transitions. [2025-03-03 11:03:54,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1258 [2025-03-03 11:03:54,072 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:03:54,073 INFO L218 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, 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, 6, 6, 6, 6, 6, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:03:54,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-03 11:03:54,273 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,SelfDestructingSolverStorable12 [2025-03-03 11:03:54,273 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:03:54,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:03:54,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1048216754, now seen corresponding path program 1 times [2025-03-03 11:03:54,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:03:54,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051305022] [2025-03-03 11:03:54,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:03:54,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:03:54,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1257 statements into 1 equivalence classes. [2025-03-03 11:03:54,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1257 of 1257 statements. [2025-03-03 11:03:54,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:03:54,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:03:56,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 957 proven. 819 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 11:03:56,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:03:56,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051305022] [2025-03-03 11:03:56,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051305022] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 11:03:56,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709375770] [2025-03-03 11:03:56,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:03:56,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 11:03:56,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 11:03:56,282 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) [2025-03-03 11:03:56,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-03 11:03:56,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1257 statements into 1 equivalence classes. [2025-03-03 11:03:56,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1257 of 1257 statements. [2025-03-03 11:03:56,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:03:56,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:03:56,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 1467 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 11:03:56,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 11:03:56,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 1181 proven. 0 refuted. 0 times theorem prover too weak. 619 trivial. 0 not checked. [2025-03-03 11:03:56,579 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 11:03:56,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709375770] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:03:56,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 11:03:56,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2025-03-03 11:03:56,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73621045] [2025-03-03 11:03:56,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:03:56,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 11:03:56,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:03:56,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 11:03:56,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-03-03 11:03:56,581 INFO L87 Difference]: Start difference. First operand 45544 states and 47869 transitions. Second operand has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:57,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:03:57,968 INFO L93 Difference]: Finished difference Result 100746 states and 106286 transitions. [2025-03-03 11:03:57,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 11:03:57,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 0 states have call successors, (0), 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 1257 [2025-03-03 11:03:57,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:03:58,101 INFO L225 Difference]: With dead ends: 100746 [2025-03-03 11:03:58,101 INFO L226 Difference]: Without dead ends: 55204 [2025-03-03 11:03:58,124 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1266 GetRequests, 1257 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-03-03 11:03:58,125 INFO L435 NwaCegarLoop]: 967 mSDtfsCounter, 609 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1780 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 2009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-03 11:03:58,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 974 Invalid, 2009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1780 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-03 11:03:58,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55204 states. [2025-03-03 11:03:58,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55204 to 55204. [2025-03-03 11:03:58,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55204 states, 55203 states have (on average 1.046754705360216) internal successors, (57784), 55203 states have internal predecessors, (57784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:58,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55204 states to 55204 states and 57784 transitions. [2025-03-03 11:03:58,512 INFO L78 Accepts]: Start accepts. Automaton has 55204 states and 57784 transitions. Word has length 1257 [2025-03-03 11:03:58,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:03:58,513 INFO L471 AbstractCegarLoop]: Abstraction has 55204 states and 57784 transitions. [2025-03-03 11:03:58,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:03:58,513 INFO L276 IsEmpty]: Start isEmpty. Operand 55204 states and 57784 transitions. [2025-03-03 11:03:58,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1277 [2025-03-03 11:03:58,526 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:03:58,526 INFO L218 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, 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, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:03:58,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-03 11:03:58,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 11:03:58,727 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:03:58,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:03:58,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1780330950, now seen corresponding path program 1 times [2025-03-03 11:03:58,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:03:58,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788487974] [2025-03-03 11:03:58,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:03:58,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:03:58,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1276 statements into 1 equivalence classes. [2025-03-03 11:03:58,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1276 of 1276 statements. [2025-03-03 11:03:58,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:03:58,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:03:59,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 1198 proven. 0 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2025-03-03 11:03:59,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:03:59,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788487974] [2025-03-03 11:03:59,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788487974] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:03:59,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 11:03:59,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 11:03:59,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263904407] [2025-03-03 11:03:59,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:03:59,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 11:03:59,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:03:59,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 11:03:59,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 11:03:59,340 INFO L87 Difference]: Start difference. First operand 55204 states and 57784 transitions. Second operand has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:04:00,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:04:00,867 INFO L93 Difference]: Finished difference Result 135246 states and 142006 transitions. [2025-03-03 11:04:00,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 11:04:00,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 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 1276 [2025-03-03 11:04:00,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:04:00,930 INFO L225 Difference]: With dead ends: 135246 [2025-03-03 11:04:00,930 INFO L226 Difference]: Without dead ends: 80734 [2025-03-03 11:04:00,954 INFO L434 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 [2025-03-03 11:04:00,954 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 614 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1771 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 2027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 1771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-03 11:04:00,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 253 Invalid, 2027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 1771 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-03 11:04:00,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80734 states. [2025-03-03 11:04:01,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80734 to 80044. [2025-03-03 11:04:01,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80044 states, 80043 states have (on average 1.0439888559899053) internal successors, (83564), 80043 states have internal predecessors, (83564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:04:01,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80044 states to 80044 states and 83564 transitions. [2025-03-03 11:04:01,719 INFO L78 Accepts]: Start accepts. Automaton has 80044 states and 83564 transitions. Word has length 1276 [2025-03-03 11:04:01,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:04:01,720 INFO L471 AbstractCegarLoop]: Abstraction has 80044 states and 83564 transitions. [2025-03-03 11:04:01,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:04:01,720 INFO L276 IsEmpty]: Start isEmpty. Operand 80044 states and 83564 transitions. [2025-03-03 11:04:01,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1371 [2025-03-03 11:04:01,734 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:04:01,735 INFO L218 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:04:01,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-03 11:04:01,735 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:04:01,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:04:01,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1443895364, now seen corresponding path program 1 times [2025-03-03 11:04:01,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:04:01,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959823091] [2025-03-03 11:04:01,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:04:01,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:04:01,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1370 statements into 1 equivalence classes. [2025-03-03 11:04:01,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1370 of 1370 statements. [2025-03-03 11:04:01,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:04:01,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:04:03,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2111 backedges. 1434 proven. 0 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2025-03-03 11:04:03,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:04:03,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959823091] [2025-03-03 11:04:03,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959823091] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:04:03,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 11:04:03,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 11:04:03,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451830850] [2025-03-03 11:04:03,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:04:03,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 11:04:03,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:04:03,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 11:04:03,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 11:04:03,041 INFO L87 Difference]: Start difference. First operand 80044 states and 83564 transitions. Second operand has 4 states, 4 states have (on average 207.25) internal successors, (829), 3 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:04:04,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:04:04,976 INFO L93 Difference]: Finished difference Result 168366 states and 175993 transitions. [2025-03-03 11:04:04,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 11:04:04,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 207.25) internal successors, (829), 3 states have internal predecessors, (829), 0 states have call successors, (0), 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 1370 [2025-03-03 11:04:04,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:04:05,059 INFO L225 Difference]: With dead ends: 168366 [2025-03-03 11:04:05,059 INFO L226 Difference]: Without dead ends: 89014 [2025-03-03 11:04:05,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 11:04:05,100 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 802 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2734 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 3048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 2734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-03 11:04:05,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 75 Invalid, 3048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 2734 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-03 11:04:05,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89014 states. [2025-03-03 11:04:05,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89014 to 88324. [2025-03-03 11:04:05,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88324 states, 88323 states have (on average 1.042842747642177) internal successors, (92107), 88323 states have internal predecessors, (92107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:04:05,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88324 states to 88324 states and 92107 transitions. [2025-03-03 11:04:05,763 INFO L78 Accepts]: Start accepts. Automaton has 88324 states and 92107 transitions. Word has length 1370 [2025-03-03 11:04:05,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:04:05,763 INFO L471 AbstractCegarLoop]: Abstraction has 88324 states and 92107 transitions. [2025-03-03 11:04:05,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 207.25) internal successors, (829), 3 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:04:05,764 INFO L276 IsEmpty]: Start isEmpty. Operand 88324 states and 92107 transitions. [2025-03-03 11:04:05,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1418 [2025-03-03 11:04:05,899 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:04:05,900 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:04:05,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-03 11:04:05,900 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:04:05,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:04:05,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1238095268, now seen corresponding path program 1 times [2025-03-03 11:04:05,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:04:05,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821815864] [2025-03-03 11:04:05,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:04:05,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:04:05,954 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1417 statements into 1 equivalence classes. [2025-03-03 11:04:05,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1417 of 1417 statements. [2025-03-03 11:04:05,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:04:05,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:04:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2613 backedges. 1167 proven. 1315 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2025-03-03 11:04:08,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:04:08,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821815864] [2025-03-03 11:04:08,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821815864] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 11:04:08,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635286265] [2025-03-03 11:04:08,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:04:08,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 11:04:08,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 11:04:08,042 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 11:04:08,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-03 11:04:08,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1417 statements into 1 equivalence classes. [2025-03-03 11:04:08,282 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1417 of 1417 statements. [2025-03-03 11:04:08,283 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:04:08,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:04:08,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 11:04:08,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 11:04:08,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2613 backedges. 1568 proven. 0 refuted. 0 times theorem prover too weak. 1045 trivial. 0 not checked. [2025-03-03 11:04:08,378 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 11:04:08,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635286265] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:04:08,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 11:04:08,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2025-03-03 11:04:08,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691961879] [2025-03-03 11:04:08,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:04:08,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 11:04:08,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:04:08,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 11:04:08,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2025-03-03 11:04:08,380 INFO L87 Difference]: Start difference. First operand 88324 states and 92107 transitions. Second operand has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:04:09,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:04:09,839 INFO L93 Difference]: Finished difference Result 176646 states and 184212 transitions. [2025-03-03 11:04:09,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 11:04:09,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 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 1417 [2025-03-03 11:04:09,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:04:09,926 INFO L225 Difference]: With dead ends: 176646 [2025-03-03 11:04:09,926 INFO L226 Difference]: Without dead ends: 88324 [2025-03-03 11:04:09,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1426 GetRequests, 1417 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2025-03-03 11:04:09,969 INFO L435 NwaCegarLoop]: 885 mSDtfsCounter, 617 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1749 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 1996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-03 11:04:09,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 892 Invalid, 1996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1749 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-03 11:04:10,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88324 states. [2025-03-03 11:04:10,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88324 to 84874. [2025-03-03 11:04:10,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84874 states, 84873 states have (on average 1.0387873646507135) internal successors, (88165), 84873 states have internal predecessors, (88165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:04:10,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84874 states to 84874 states and 88165 transitions. [2025-03-03 11:04:10,830 INFO L78 Accepts]: Start accepts. Automaton has 84874 states and 88165 transitions. Word has length 1417 [2025-03-03 11:04:10,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:04:10,831 INFO L471 AbstractCegarLoop]: Abstraction has 84874 states and 88165 transitions. [2025-03-03 11:04:10,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:04:10,831 INFO L276 IsEmpty]: Start isEmpty. Operand 84874 states and 88165 transitions. [2025-03-03 11:04:10,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1532 [2025-03-03 11:04:10,863 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:04:10,863 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:04:10,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-03 11:04:11,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 11:04:11,065 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:04:11,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:04:11,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1462538882, now seen corresponding path program 1 times [2025-03-03 11:04:11,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:04:11,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649752147] [2025-03-03 11:04:11,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:04:11,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:04:11,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1531 statements into 1 equivalence classes. [2025-03-03 11:04:11,228 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1531 of 1531 statements. [2025-03-03 11:04:11,228 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:04:11,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:04:12,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3026 backedges. 1948 proven. 0 refuted. 0 times theorem prover too weak. 1078 trivial. 0 not checked. [2025-03-03 11:04:12,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:04:12,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649752147] [2025-03-03 11:04:12,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649752147] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:04:12,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 11:04:12,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 11:04:12,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610020652] [2025-03-03 11:04:12,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:04:12,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 11:04:12,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:04:12,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 11:04:12,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 11:04:12,022 INFO L87 Difference]: Start difference. First operand 84874 states and 88165 transitions. Second operand has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:04:13,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:04:13,367 INFO L93 Difference]: Finished difference Result 170438 states and 177027 transitions. [2025-03-03 11:04:13,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 11:04:13,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 0 states have call successors, (0), 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 1531 [2025-03-03 11:04:13,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:04:13,445 INFO L225 Difference]: With dead ends: 170438 [2025-03-03 11:04:13,446 INFO L226 Difference]: Without dead ends: 86256 [2025-03-03 11:04:13,490 INFO L434 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 [2025-03-03 11:04:13,491 INFO L435 NwaCegarLoop]: 265 mSDtfsCounter, 518 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-03 11:04:13,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 271 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1765 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-03 11:04:13,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86256 states. [2025-03-03 11:04:14,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86256 to 84874. [2025-03-03 11:04:14,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84874 states, 84873 states have (on average 1.0387873646507135) internal successors, (88165), 84873 states have internal predecessors, (88165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:04:14,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84874 states to 84874 states and 88165 transitions. [2025-03-03 11:04:14,157 INFO L78 Accepts]: Start accepts. Automaton has 84874 states and 88165 transitions. Word has length 1531 [2025-03-03 11:04:14,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:04:14,157 INFO L471 AbstractCegarLoop]: Abstraction has 84874 states and 88165 transitions. [2025-03-03 11:04:14,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:04:14,157 INFO L276 IsEmpty]: Start isEmpty. Operand 84874 states and 88165 transitions. [2025-03-03 11:04:14,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1559 [2025-03-03 11:04:14,176 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:04:14,176 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:04:14,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-03 11:04:14,176 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:04:14,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:04:14,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1040992809, now seen corresponding path program 1 times [2025-03-03 11:04:14,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:04:14,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348244320] [2025-03-03 11:04:14,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:04:14,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:04:14,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1558 statements into 1 equivalence classes. [2025-03-03 11:04:14,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1558 of 1558 statements. [2025-03-03 11:04:14,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:04:14,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:04:15,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3047 backedges. 946 proven. 0 refuted. 0 times theorem prover too weak. 2101 trivial. 0 not checked. [2025-03-03 11:04:15,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:04:15,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348244320] [2025-03-03 11:04:15,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348244320] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:04:15,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 11:04:15,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 11:04:15,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790301435] [2025-03-03 11:04:15,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:04:15,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 11:04:15,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:04:15,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 11:04:15,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 11:04:15,517 INFO L87 Difference]: Start difference. First operand 84874 states and 88165 transitions. Second operand has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:04:16,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:04:16,999 INFO L93 Difference]: Finished difference Result 175956 states and 182999 transitions. [2025-03-03 11:04:17,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 11:04:17,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 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 1558 [2025-03-03 11:04:17,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:04:17,100 INFO L225 Difference]: With dead ends: 175956 [2025-03-03 11:04:17,101 INFO L226 Difference]: Without dead ends: 91084 [2025-03-03 11:04:17,149 INFO L434 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 [2025-03-03 11:04:17,150 INFO L435 NwaCegarLoop]: 883 mSDtfsCounter, 578 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1680 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 1680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-03 11:04:17,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 890 Invalid, 1979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 1680 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-03 11:04:17,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91084 states. [2025-03-03 11:04:17,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91084 to 89704. [2025-03-03 11:04:17,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89704 states, 89703 states have (on average 1.033566324426162) internal successors, (92714), 89703 states have internal predecessors, (92714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:04:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89704 states to 89704 states and 92714 transitions. [2025-03-03 11:04:17,829 INFO L78 Accepts]: Start accepts. Automaton has 89704 states and 92714 transitions. Word has length 1558 [2025-03-03 11:04:17,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:04:17,829 INFO L471 AbstractCegarLoop]: Abstraction has 89704 states and 92714 transitions. [2025-03-03 11:04:17,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:04:17,830 INFO L276 IsEmpty]: Start isEmpty. Operand 89704 states and 92714 transitions. [2025-03-03 11:04:17,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1740 [2025-03-03 11:04:17,860 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:04:17,861 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:04:17,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-03 11:04:17,861 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:04:17,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:04:17,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1356190762, now seen corresponding path program 1 times [2025-03-03 11:04:17,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:04:17,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218993181] [2025-03-03 11:04:17,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:04:17,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:04:17,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1739 statements into 1 equivalence classes. [2025-03-03 11:04:17,969 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1739 of 1739 statements. [2025-03-03 11:04:17,969 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:04:17,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:04:19,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4065 backedges. 1104 proven. 0 refuted. 0 times theorem prover too weak. 2961 trivial. 0 not checked. [2025-03-03 11:04:19,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:04:19,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218993181] [2025-03-03 11:04:19,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218993181] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:04:19,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 11:04:19,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 11:04:19,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889756352] [2025-03-03 11:04:19,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:04:19,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 11:04:19,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:04:19,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 11:04:19,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 11:04:19,505 INFO L87 Difference]: Start difference. First operand 89704 states and 92714 transitions. Second operand has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:04:21,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:04:21,044 INFO L93 Difference]: Finished difference Result 179406 states and 185441 transitions. [2025-03-03 11:04:21,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 11:04:21,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 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 1739 [2025-03-03 11:04:21,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:04:21,123 INFO L225 Difference]: With dead ends: 179406 [2025-03-03 11:04:21,123 INFO L226 Difference]: Without dead ends: 90394 [2025-03-03 11:04:21,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 11:04:21,170 INFO L435 NwaCegarLoop]: 983 mSDtfsCounter, 766 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 2478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-03 11:04:21,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 1637 Invalid, 2478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-03 11:04:21,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90394 states. [2025-03-03 11:04:21,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90394 to 89704. [2025-03-03 11:04:21,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89704 states, 89703 states have (on average 1.0334771412327346) internal successors, (92706), 89703 states have internal predecessors, (92706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:04:21,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89704 states to 89704 states and 92706 transitions. [2025-03-03 11:04:21,922 INFO L78 Accepts]: Start accepts. Automaton has 89704 states and 92706 transitions. Word has length 1739 [2025-03-03 11:04:21,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:04:21,923 INFO L471 AbstractCegarLoop]: Abstraction has 89704 states and 92706 transitions. [2025-03-03 11:04:21,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:04:21,923 INFO L276 IsEmpty]: Start isEmpty. Operand 89704 states and 92706 transitions. [2025-03-03 11:04:21,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1757 [2025-03-03 11:04:21,954 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:04:21,954 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:04:21,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-03 11:04:21,955 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:04:21,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:04:21,956 INFO L85 PathProgramCache]: Analyzing trace with hash 269484456, now seen corresponding path program 1 times [2025-03-03 11:04:21,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:04:21,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974777266] [2025-03-03 11:04:21,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:04:21,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:04:22,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1756 statements into 1 equivalence classes. [2025-03-03 11:04:22,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1756 of 1756 statements. [2025-03-03 11:04:22,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:04:22,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:04:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4019 backedges. 2403 proven. 0 refuted. 0 times theorem prover too weak. 1616 trivial. 0 not checked. [2025-03-03 11:04:23,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:04:23,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974777266] [2025-03-03 11:04:23,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974777266] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:04:23,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 11:04:23,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 11:04:23,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959767507] [2025-03-03 11:04:23,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:04:23,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 11:04:23,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:04:23,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 11:04:23,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 11:04:23,753 INFO L87 Difference]: Start difference. First operand 89704 states and 92706 transitions. Second operand has 5 states, 5 states have (on average 193.4) internal successors, (967), 5 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:04:26,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:04:26,675 INFO L93 Difference]: Finished difference Result 179592 states and 185613 transitions. [2025-03-03 11:04:26,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 11:04:26,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 193.4) internal successors, (967), 5 states have internal predecessors, (967), 0 states have call successors, (0), 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 1756 [2025-03-03 11:04:26,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:04:26,764 INFO L225 Difference]: With dead ends: 179592 [2025-03-03 11:04:26,764 INFO L226 Difference]: Without dead ends: 90580 [2025-03-03 11:04:26,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-03-03 11:04:26,816 INFO L435 NwaCegarLoop]: 949 mSDtfsCounter, 1177 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 6243 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 6622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 6243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-03 11:04:26,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 986 Invalid, 6622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 6243 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-03 11:04:26,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90580 states. [2025-03-03 11:04:27,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90580 to 90394. [2025-03-03 11:04:27,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90394 states, 90393 states have (on average 1.030323144491277) internal successors, (93134), 90393 states have internal predecessors, (93134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:04:27,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90394 states to 90394 states and 93134 transitions. [2025-03-03 11:04:27,528 INFO L78 Accepts]: Start accepts. Automaton has 90394 states and 93134 transitions. Word has length 1756 [2025-03-03 11:04:27,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:04:27,528 INFO L471 AbstractCegarLoop]: Abstraction has 90394 states and 93134 transitions. [2025-03-03 11:04:27,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 193.4) internal successors, (967), 5 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:04:27,529 INFO L276 IsEmpty]: Start isEmpty. Operand 90394 states and 93134 transitions. [2025-03-03 11:04:27,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1758 [2025-03-03 11:04:27,555 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:04:27,556 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:04:27,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-03 11:04:27,556 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:04:27,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:04:27,557 INFO L85 PathProgramCache]: Analyzing trace with hash 2095283264, now seen corresponding path program 1 times [2025-03-03 11:04:27,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:04:27,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962773082] [2025-03-03 11:04:27,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:04:27,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:04:27,623 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1757 statements into 1 equivalence classes. [2025-03-03 11:04:27,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1757 of 1757 statements. [2025-03-03 11:04:27,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:04:27,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:04:31,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3651 backedges. 990 proven. 0 refuted. 0 times theorem prover too weak. 2661 trivial. 0 not checked. [2025-03-03 11:04:31,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:04:31,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962773082] [2025-03-03 11:04:31,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962773082] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:04:31,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 11:04:31,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 11:04:31,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440309764] [2025-03-03 11:04:31,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:04:31,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 11:04:31,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:04:31,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 11:04:31,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 11:04:31,964 INFO L87 Difference]: Start difference. First operand 90394 states and 93134 transitions. Second operand has 3 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)