./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem16_label38.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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/Problem16_label38.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 bc6f3b983186b129fc2c8495f43645af8fd70d5de682a5c401850a1bca673b92 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 02:05:48,578 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 02:05:48,626 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 02:05:48,630 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 02:05:48,630 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 02:05:48,650 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 02:05:48,651 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 02:05:48,651 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 02:05:48,652 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 02:05:48,652 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 02:05:48,653 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 02:05:48,653 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 02:05:48,653 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 02:05:48,653 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 02:05:48,653 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 02:05:48,653 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 02:05:48,653 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 02:05:48,653 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 02:05:48,654 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 02:05:48,654 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 02:05:48,654 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 02:05:48,654 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 02:05:48,654 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 02:05:48,654 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 02:05:48,654 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 02:05:48,654 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 02:05:48,654 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 02:05:48,654 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 02:05:48,655 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 02:05:48,655 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 02:05:48,655 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 02:05:48,655 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 02:05:48,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 02:05:48,655 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 02:05:48,655 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 02:05:48,655 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 02:05:48,656 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 02:05:48,656 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 02:05:48,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 02:05:48,656 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 02:05:48,656 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 02:05:48,656 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 02:05:48,656 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 02:05:48,656 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 -> bc6f3b983186b129fc2c8495f43645af8fd70d5de682a5c401850a1bca673b92 [2025-03-08 02:05:48,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 02:05:48,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 02:05:48,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 02:05:48,862 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 02:05:48,862 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 02:05:48,864 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem16_label38.c [2025-03-08 02:05:49,948 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d1f37048/77dade1e0499451ba853ddbe7b875c0a/FLAGd196c63e2 [2025-03-08 02:05:50,330 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 02:05:50,332 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label38.c [2025-03-08 02:05:50,345 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d1f37048/77dade1e0499451ba853ddbe7b875c0a/FLAGd196c63e2 [2025-03-08 02:05:50,510 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d1f37048/77dade1e0499451ba853ddbe7b875c0a [2025-03-08 02:05:50,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 02:05:50,513 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 02:05:50,514 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 02:05:50,514 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 02:05:50,518 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 02:05:50,518 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 02:05:50" (1/1) ... [2025-03-08 02:05:50,519 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@575fa61a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:05:50, skipping insertion in model container [2025-03-08 02:05:50,519 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 02:05:50" (1/1) ... [2025-03-08 02:05:50,564 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 02:05:50,678 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/Problem16_label38.c[1461,1474] [2025-03-08 02:05:50,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 02:05:50,982 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 02:05:50,990 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/Problem16_label38.c[1461,1474] [2025-03-08 02:05:51,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 02:05:51,130 INFO L204 MainTranslator]: Completed translation [2025-03-08 02:05:51,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:05:51 WrapperNode [2025-03-08 02:05:51,131 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 02:05:51,132 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 02:05:51,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 02:05:51,133 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 02:05:51,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:05:51" (1/1) ... [2025-03-08 02:05:51,159 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:05:51" (1/1) ... [2025-03-08 02:05:51,250 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1767 [2025-03-08 02:05:51,250 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 02:05:51,251 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 02:05:51,251 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 02:05:51,251 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 02:05:51,257 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:05:51" (1/1) ... [2025-03-08 02:05:51,257 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:05:51" (1/1) ... [2025-03-08 02:05:51,275 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:05:51" (1/1) ... [2025-03-08 02:05:51,358 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]. [2025-03-08 02:05:51,359 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:05:51" (1/1) ... [2025-03-08 02:05:51,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:05:51" (1/1) ... [2025-03-08 02:05:51,401 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:05:51" (1/1) ... [2025-03-08 02:05:51,407 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:05:51" (1/1) ... [2025-03-08 02:05:51,416 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:05:51" (1/1) ... [2025-03-08 02:05:51,422 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:05:51" (1/1) ... [2025-03-08 02:05:51,435 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 02:05:51,437 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 02:05:51,437 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 02:05:51,437 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 02:05:51,438 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:05:51" (1/1) ... [2025-03-08 02:05:51,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 02:05:51,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:05:51,465 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 02:05:51,471 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 [2025-03-08 02:05:51,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 02:05:51,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 02:05:51,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 02:05:51,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 02:05:51,533 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 02:05:51,534 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 02:05:53,059 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1501: havoc calculate_output_#t~ret7#1; [2025-03-08 02:05:53,126 INFO L? ?]: Removed 276 outVars from TransFormulas that were not future-live. [2025-03-08 02:05:53,127 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 02:05:53,142 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 02:05:53,143 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 02:05:53,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 02:05:53 BoogieIcfgContainer [2025-03-08 02:05:53,143 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 02:05:53,148 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 02:05:53,148 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 02:05:53,151 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 02:05:53,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 02:05:50" (1/3) ... [2025-03-08 02:05:53,152 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f1facf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 02:05:53, skipping insertion in model container [2025-03-08 02:05:53,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:05:51" (2/3) ... [2025-03-08 02:05:53,152 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f1facf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 02:05:53, skipping insertion in model container [2025-03-08 02:05:53,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 02:05:53" (3/3) ... [2025-03-08 02:05:53,153 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem16_label38.c [2025-03-08 02:05:53,165 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 02:05:53,167 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem16_label38.c that has 1 procedures, 396 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 02:05:53,223 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 02:05:53,233 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;@43ee949f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 02:05:53,234 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 02:05:53,238 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 394 states have (on average 1.83248730964467) internal successors, (722), 395 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:05:53,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-08 02:05:53,242 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:05:53,243 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:05:53,243 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:05:53,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:05:53,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1283197837, now seen corresponding path program 1 times [2025-03-08 02:05:53,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:05:53,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080099405] [2025-03-08 02:05:53,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:05:53,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:05:53,307 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-08 02:05:53,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-08 02:05:53,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:05:53,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:05:53,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 02:05:53,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:05:53,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080099405] [2025-03-08 02:05:53,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080099405] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:05:53,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:05:53,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 02:05:53,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106977097] [2025-03-08 02:05:53,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:05:53,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:05:53,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:05:53,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:05:53,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:05:53,433 INFO L87 Difference]: Start difference. First operand has 396 states, 394 states have (on average 1.83248730964467) internal successors, (722), 395 states have internal predecessors, (722), 0 states have call successors, (0), 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 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:05:54,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:05:54,775 INFO L93 Difference]: Finished difference Result 1122 states and 2100 transitions. [2025-03-08 02:05:54,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:05:54,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2025-03-08 02:05:54,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:05:54,785 INFO L225 Difference]: With dead ends: 1122 [2025-03-08 02:05:54,785 INFO L226 Difference]: Without dead ends: 662 [2025-03-08 02:05:54,788 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 [2025-03-08 02:05:54,789 INFO L435 NwaCegarLoop]: 246 mSDtfsCounter, 376 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-08 02:05:54,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 254 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-08 02:05:54,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2025-03-08 02:05:54,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2025-03-08 02:05:54,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.518910741301059) internal successors, (1004), 661 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:05:54,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1004 transitions. [2025-03-08 02:05:54,843 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1004 transitions. Word has length 11 [2025-03-08 02:05:54,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:05:54,844 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1004 transitions. [2025-03-08 02:05:54,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:05:54,844 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1004 transitions. [2025-03-08 02:05:54,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-08 02:05:54,845 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:05:54,845 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 02:05:54,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 02:05:54,846 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:05:54,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:05:54,846 INFO L85 PathProgramCache]: Analyzing trace with hash -95959834, now seen corresponding path program 1 times [2025-03-08 02:05:54,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:05:54,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195932962] [2025-03-08 02:05:54,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:05:54,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:05:54,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-08 02:05:54,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-08 02:05:54,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:05:54,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:05:55,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 02:05:55,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:05:55,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195932962] [2025-03-08 02:05:55,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195932962] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:05:55,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:05:55,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:05:55,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956742152] [2025-03-08 02:05:55,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:05:55,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 02:05:55,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:05:55,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 02:05:55,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:05:55,201 INFO L87 Difference]: Start difference. First operand 662 states and 1004 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:05:56,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:05:56,715 INFO L93 Difference]: Finished difference Result 2309 states and 3414 transitions. [2025-03-08 02:05:56,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 02:05:56,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2025-03-08 02:05:56,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:05:56,720 INFO L225 Difference]: With dead ends: 2309 [2025-03-08 02:05:56,720 INFO L226 Difference]: Without dead ends: 1649 [2025-03-08 02:05:56,724 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 [2025-03-08 02:05:56,724 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 1008 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1496 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 1985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 1496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-08 02:05:56,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 42 Invalid, 1985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 1496 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-08 02:05:56,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2025-03-08 02:05:56,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1649. [2025-03-08 02:05:56,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1648 states have (on average 1.4016990291262137) internal successors, (2310), 1648 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:05:56,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2310 transitions. [2025-03-08 02:05:56,777 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2310 transitions. Word has length 79 [2025-03-08 02:05:56,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:05:56,778 INFO L471 AbstractCegarLoop]: Abstraction has 1649 states and 2310 transitions. [2025-03-08 02:05:56,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:05:56,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2310 transitions. [2025-03-08 02:05:56,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-08 02:05:56,783 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:05:56,783 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 02:05:56,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 02:05:56,784 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:05:56,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:05:56,786 INFO L85 PathProgramCache]: Analyzing trace with hash 435949286, now seen corresponding path program 1 times [2025-03-08 02:05:56,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:05:56,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876335106] [2025-03-08 02:05:56,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:05:56,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:05:56,805 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-08 02:05:56,820 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-08 02:05:56,821 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:05:56,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:05:56,971 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 02:05:56,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:05:56,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876335106] [2025-03-08 02:05:56,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876335106] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:05:56,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:05:56,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 02:05:56,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468806656] [2025-03-08 02:05:56,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:05:56,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:05:56,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:05:56,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:05:56,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:05:56,974 INFO L87 Difference]: Start difference. First operand 1649 states and 2310 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:05:57,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:05:57,941 INFO L93 Difference]: Finished difference Result 3625 states and 5242 transitions. [2025-03-08 02:05:57,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:05:57,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2025-03-08 02:05:57,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:05:57,949 INFO L225 Difference]: With dead ends: 3625 [2025-03-08 02:05:57,949 INFO L226 Difference]: Without dead ends: 2307 [2025-03-08 02:05:57,953 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 [2025-03-08 02:05:57,954 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 278 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-08 02:05:57,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 77 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-08 02:05:57,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2025-03-08 02:05:57,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 2307. [2025-03-08 02:05:57,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 2306 states have (on average 1.349956634865568) internal successors, (3113), 2306 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:05:57,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 3113 transitions. [2025-03-08 02:05:57,990 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 3113 transitions. Word has length 142 [2025-03-08 02:05:57,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:05:57,992 INFO L471 AbstractCegarLoop]: Abstraction has 2307 states and 3113 transitions. [2025-03-08 02:05:57,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:05:57,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 3113 transitions. [2025-03-08 02:05:57,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-08 02:05:57,996 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:05:57,996 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:05:57,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 02:05:57,996 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:05:57,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:05:57,996 INFO L85 PathProgramCache]: Analyzing trace with hash -2039940033, now seen corresponding path program 1 times [2025-03-08 02:05:57,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:05:57,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207546436] [2025-03-08 02:05:57,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:05:57,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:05:58,020 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-08 02:05:58,037 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-08 02:05:58,037 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:05:58,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:05:58,162 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2025-03-08 02:05:58,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:05:58,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207546436] [2025-03-08 02:05:58,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207546436] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:05:58,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:05:58,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 02:05:58,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25521454] [2025-03-08 02:05:58,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:05:58,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:05:58,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:05:58,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:05:58,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:05:58,164 INFO L87 Difference]: Start difference. First operand 2307 states and 3113 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:05:59,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:05:59,124 INFO L93 Difference]: Finished difference Result 5599 states and 7699 transitions. [2025-03-08 02:05:59,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:05:59,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 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 177 [2025-03-08 02:05:59,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:05:59,135 INFO L225 Difference]: With dead ends: 5599 [2025-03-08 02:05:59,136 INFO L226 Difference]: Without dead ends: 3623 [2025-03-08 02:05:59,137 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 [2025-03-08 02:05:59,139 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 359 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-08 02:05:59,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 155 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-08 02:05:59,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2025-03-08 02:05:59,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 2965. [2025-03-08 02:05:59,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2964 states have (on average 1.2442645074224021) internal successors, (3688), 2964 states have internal predecessors, (3688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:05:59,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 3688 transitions. [2025-03-08 02:05:59,181 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 3688 transitions. Word has length 177 [2025-03-08 02:05:59,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:05:59,182 INFO L471 AbstractCegarLoop]: Abstraction has 2965 states and 3688 transitions. [2025-03-08 02:05:59,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:05:59,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 3688 transitions. [2025-03-08 02:05:59,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2025-03-08 02:05:59,185 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:05:59,186 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:05:59,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 02:05:59,186 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:05:59,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:05:59,186 INFO L85 PathProgramCache]: Analyzing trace with hash -347733775, now seen corresponding path program 1 times [2025-03-08 02:05:59,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:05:59,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381505245] [2025-03-08 02:05:59,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:05:59,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:05:59,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 194 statements into 1 equivalence classes. [2025-03-08 02:05:59,213 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 194 of 194 statements. [2025-03-08 02:05:59,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:05:59,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:05:59,326 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 02:05:59,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:05:59,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381505245] [2025-03-08 02:05:59,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381505245] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:05:59,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:05:59,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:05:59,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822111584] [2025-03-08 02:05:59,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:05:59,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:05:59,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:05:59,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:05:59,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:05:59,328 INFO L87 Difference]: Start difference. First operand 2965 states and 3688 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:00,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:06:00,166 INFO L93 Difference]: Finished difference Result 6915 states and 8657 transitions. [2025-03-08 02:06:00,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:06:00,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 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 194 [2025-03-08 02:06:00,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:06:00,176 INFO L225 Difference]: With dead ends: 6915 [2025-03-08 02:06:00,176 INFO L226 Difference]: Without dead ends: 3623 [2025-03-08 02:06:00,178 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 [2025-03-08 02:06:00,179 INFO L435 NwaCegarLoop]: 534 mSDtfsCounter, 286 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 02:06:00,179 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 540 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 02:06:00,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2025-03-08 02:06:00,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3623. [2025-03-08 02:06:00,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3623 states, 3622 states have (on average 1.0762009939260078) internal successors, (3898), 3622 states have internal predecessors, (3898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:00,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 3898 transitions. [2025-03-08 02:06:00,218 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 3898 transitions. Word has length 194 [2025-03-08 02:06:00,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:06:00,219 INFO L471 AbstractCegarLoop]: Abstraction has 3623 states and 3898 transitions. [2025-03-08 02:06:00,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:00,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 3898 transitions. [2025-03-08 02:06:00,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2025-03-08 02:06:00,220 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:06:00,220 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2025-03-08 02:06:00,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 02:06:00,221 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:06:00,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:06:00,222 INFO L85 PathProgramCache]: Analyzing trace with hash -306081942, now seen corresponding path program 1 times [2025-03-08 02:06:00,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:06:00,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147191458] [2025-03-08 02:06:00,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:00,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:06:00,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 246 statements into 1 equivalence classes. [2025-03-08 02:06:00,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 246 of 246 statements. [2025-03-08 02:06:00,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:00,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:00,401 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 02:06:00,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:06:00,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147191458] [2025-03-08 02:06:00,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147191458] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:06:00,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:06:00,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:06:00,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904784213] [2025-03-08 02:06:00,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:06:00,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:06:00,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:06:00,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:06:00,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:06:00,404 INFO L87 Difference]: Start difference. First operand 3623 states and 3898 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:01,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:06:01,076 INFO L93 Difference]: Finished difference Result 8231 states and 8905 transitions. [2025-03-08 02:06:01,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:06:01,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 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 246 [2025-03-08 02:06:01,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:06:01,087 INFO L225 Difference]: With dead ends: 8231 [2025-03-08 02:06:01,087 INFO L226 Difference]: Without dead ends: 4939 [2025-03-08 02:06:01,090 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 [2025-03-08 02:06:01,091 INFO L435 NwaCegarLoop]: 413 mSDtfsCounter, 325 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 02:06:01,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 419 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 02:06:01,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4939 states. [2025-03-08 02:06:01,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4939 to 4939. [2025-03-08 02:06:01,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4939 states, 4938 states have (on average 1.0514378290805995) internal successors, (5192), 4938 states have internal predecessors, (5192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:01,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4939 states to 4939 states and 5192 transitions. [2025-03-08 02:06:01,158 INFO L78 Accepts]: Start accepts. Automaton has 4939 states and 5192 transitions. Word has length 246 [2025-03-08 02:06:01,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:06:01,158 INFO L471 AbstractCegarLoop]: Abstraction has 4939 states and 5192 transitions. [2025-03-08 02:06:01,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:01,158 INFO L276 IsEmpty]: Start isEmpty. Operand 4939 states and 5192 transitions. [2025-03-08 02:06:01,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2025-03-08 02:06:01,161 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:06:01,162 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:06:01,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 02:06:01,162 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:06:01,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:06:01,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1584356937, now seen corresponding path program 1 times [2025-03-08 02:06:01,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:06:01,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095465942] [2025-03-08 02:06:01,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:01,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:06:01,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 350 statements into 1 equivalence classes. [2025-03-08 02:06:01,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 350 of 350 statements. [2025-03-08 02:06:01,228 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:01,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:01,382 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2025-03-08 02:06:01,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:06:01,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095465942] [2025-03-08 02:06:01,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095465942] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:06:01,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:06:01,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:06:01,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105421973] [2025-03-08 02:06:01,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:06:01,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:06:01,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:06:01,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:06:01,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:06:01,384 INFO L87 Difference]: Start difference. First operand 4939 states and 5192 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:02,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:06:02,038 INFO L93 Difference]: Finished difference Result 10863 states and 11493 transitions. [2025-03-08 02:06:02,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:06:02,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 350 [2025-03-08 02:06:02,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:06:02,051 INFO L225 Difference]: With dead ends: 10863 [2025-03-08 02:06:02,051 INFO L226 Difference]: Without dead ends: 6255 [2025-03-08 02:06:02,054 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 [2025-03-08 02:06:02,054 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 337 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 02:06:02,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 38 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 02:06:02,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6255 states. [2025-03-08 02:06:02,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6255 to 6255. [2025-03-08 02:06:02,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6255 states, 6254 states have (on average 1.0548448992644708) internal successors, (6597), 6254 states have internal predecessors, (6597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:02,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6255 states to 6255 states and 6597 transitions. [2025-03-08 02:06:02,118 INFO L78 Accepts]: Start accepts. Automaton has 6255 states and 6597 transitions. Word has length 350 [2025-03-08 02:06:02,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:06:02,119 INFO L471 AbstractCegarLoop]: Abstraction has 6255 states and 6597 transitions. [2025-03-08 02:06:02,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:02,119 INFO L276 IsEmpty]: Start isEmpty. Operand 6255 states and 6597 transitions. [2025-03-08 02:06:02,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2025-03-08 02:06:02,122 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:06:02,122 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:06:02,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 02:06:02,122 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:06:02,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:06:02,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1887828866, now seen corresponding path program 1 times [2025-03-08 02:06:02,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:06:02,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457447076] [2025-03-08 02:06:02,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:02,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:06:02,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 404 statements into 1 equivalence classes. [2025-03-08 02:06:02,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 404 of 404 statements. [2025-03-08 02:06:02,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:02,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:02,568 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-08 02:06:02,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:06:02,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457447076] [2025-03-08 02:06:02,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457447076] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 02:06:02,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643379194] [2025-03-08 02:06:02,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:02,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:06:02,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:06:02,572 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) [2025-03-08 02:06:02,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 02:06:02,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 404 statements into 1 equivalence classes. [2025-03-08 02:06:02,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 404 of 404 statements. [2025-03-08 02:06:02,684 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:02,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:02,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 02:06:02,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 02:06:03,124 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2025-03-08 02:06:03,124 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 02:06:03,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643379194] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:06:03,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 02:06:03,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2025-03-08 02:06:03,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982098335] [2025-03-08 02:06:03,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:06:03,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:06:03,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:06:03,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:06:03,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 02:06:03,126 INFO L87 Difference]: Start difference. First operand 6255 states and 6597 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 2 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:03,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:06:03,699 INFO L93 Difference]: Finished difference Result 7573 states and 7950 transitions. [2025-03-08 02:06:03,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:06:03,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 2 states have internal predecessors, (240), 0 states have call successors, (0), 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 404 [2025-03-08 02:06:03,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:06:03,715 INFO L225 Difference]: With dead ends: 7573 [2025-03-08 02:06:03,715 INFO L226 Difference]: Without dead ends: 7571 [2025-03-08 02:06:03,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 02:06:03,717 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 116 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 02:06:03,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 75 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 02:06:03,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7571 states. [2025-03-08 02:06:03,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7571 to 6584. [2025-03-08 02:06:03,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6584 states, 6583 states have (on average 1.0540786875284824) internal successors, (6939), 6583 states have internal predecessors, (6939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:03,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6584 states to 6584 states and 6939 transitions. [2025-03-08 02:06:03,810 INFO L78 Accepts]: Start accepts. Automaton has 6584 states and 6939 transitions. Word has length 404 [2025-03-08 02:06:03,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:06:03,810 INFO L471 AbstractCegarLoop]: Abstraction has 6584 states and 6939 transitions. [2025-03-08 02:06:03,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 2 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:03,811 INFO L276 IsEmpty]: Start isEmpty. Operand 6584 states and 6939 transitions. [2025-03-08 02:06:03,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1207 [2025-03-08 02:06:03,834 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:06:03,835 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-08 02:06:03,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 02:06:04,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:06:04,040 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:06:04,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:06:04,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1373281507, now seen corresponding path program 1 times [2025-03-08 02:06:04,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:06:04,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209043631] [2025-03-08 02:06:04,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:04,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:06:04,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1206 statements into 1 equivalence classes. [2025-03-08 02:06:04,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1206 of 1206 statements. [2025-03-08 02:06:04,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:04,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:04,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 1817 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2025-03-08 02:06:04,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:06:04,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209043631] [2025-03-08 02:06:04,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209043631] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:06:04,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:06:04,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:06:04,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960551773] [2025-03-08 02:06:04,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:06:04,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:06:04,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:06:04,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:06:04,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:06:04,686 INFO L87 Difference]: Start difference. First operand 6584 states and 6939 transitions. Second operand has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:05,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:06:05,337 INFO L93 Difference]: Finished difference Result 14482 states and 15329 transitions. [2025-03-08 02:06:05,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:06:05,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 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 1206 [2025-03-08 02:06:05,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:06:05,353 INFO L225 Difference]: With dead ends: 14482 [2025-03-08 02:06:05,353 INFO L226 Difference]: Without dead ends: 8229 [2025-03-08 02:06:05,359 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 [2025-03-08 02:06:05,360 INFO L435 NwaCegarLoop]: 425 mSDtfsCounter, 220 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 02:06:05,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 431 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 02:06:05,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8229 states. [2025-03-08 02:06:05,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8229 to 7900. [2025-03-08 02:06:05,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7900 states, 7899 states have (on average 1.0483605519686037) internal successors, (8281), 7899 states have internal predecessors, (8281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:05,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7900 states to 7900 states and 8281 transitions. [2025-03-08 02:06:05,432 INFO L78 Accepts]: Start accepts. Automaton has 7900 states and 8281 transitions. Word has length 1206 [2025-03-08 02:06:05,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:06:05,433 INFO L471 AbstractCegarLoop]: Abstraction has 7900 states and 8281 transitions. [2025-03-08 02:06:05,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:05,433 INFO L276 IsEmpty]: Start isEmpty. Operand 7900 states and 8281 transitions. [2025-03-08 02:06:05,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1424 [2025-03-08 02:06:05,462 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:06:05,462 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2025-03-08 02:06:05,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 02:06:05,463 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:06:05,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:06:05,463 INFO L85 PathProgramCache]: Analyzing trace with hash -193847966, now seen corresponding path program 1 times [2025-03-08 02:06:05,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:06:05,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898932951] [2025-03-08 02:06:05,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:05,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:06:05,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1423 statements into 1 equivalence classes. [2025-03-08 02:06:05,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1423 of 1423 statements. [2025-03-08 02:06:05,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:05,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3596 backedges. 2614 proven. 0 refuted. 0 times theorem prover too weak. 982 trivial. 0 not checked. [2025-03-08 02:06:06,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:06:06,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898932951] [2025-03-08 02:06:06,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898932951] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:06:06,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:06:06,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 02:06:06,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887639167] [2025-03-08 02:06:06,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:06:06,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 02:06:06,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:06:06,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 02:06:06,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-08 02:06:06,700 INFO L87 Difference]: Start difference. First operand 7900 states and 8281 transitions. Second operand has 6 states, 6 states have (on average 128.83333333333334) internal successors, (773), 6 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:07,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:06:07,705 INFO L93 Difference]: Finished difference Result 15470 states and 16230 transitions. [2025-03-08 02:06:07,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 02:06:07,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 128.83333333333334) internal successors, (773), 6 states have internal predecessors, (773), 0 states have call successors, (0), 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 1423 [2025-03-08 02:06:07,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:06:07,717 INFO L225 Difference]: With dead ends: 15470 [2025-03-08 02:06:07,717 INFO L226 Difference]: Without dead ends: 7901 [2025-03-08 02:06:07,723 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-03-08 02:06:07,723 INFO L435 NwaCegarLoop]: 430 mSDtfsCounter, 357 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 1794 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-08 02:06:07,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 566 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1794 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-08 02:06:07,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7901 states. [2025-03-08 02:06:07,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7901 to 7900. [2025-03-08 02:06:07,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7900 states, 7899 states have (on average 1.0469679706291937) internal successors, (8270), 7899 states have internal predecessors, (8270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:07,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7900 states to 7900 states and 8270 transitions. [2025-03-08 02:06:07,780 INFO L78 Accepts]: Start accepts. Automaton has 7900 states and 8270 transitions. Word has length 1423 [2025-03-08 02:06:07,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:06:07,781 INFO L471 AbstractCegarLoop]: Abstraction has 7900 states and 8270 transitions. [2025-03-08 02:06:07,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.83333333333334) internal successors, (773), 6 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:07,781 INFO L276 IsEmpty]: Start isEmpty. Operand 7900 states and 8270 transitions. [2025-03-08 02:06:07,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1438 [2025-03-08 02:06:07,796 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:06:07,797 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:06:07,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 02:06:07,797 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:06:07,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:06:07,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1363606252, now seen corresponding path program 1 times [2025-03-08 02:06:07,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:06:07,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344288877] [2025-03-08 02:06:07,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:07,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:06:07,874 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1437 statements into 1 equivalence classes. [2025-03-08 02:06:07,910 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1437 of 1437 statements. [2025-03-08 02:06:07,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:07,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:08,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3496 backedges. 2551 proven. 0 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2025-03-08 02:06:08,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:06:08,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344288877] [2025-03-08 02:06:08,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344288877] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:06:08,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:06:08,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 02:06:08,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136254603] [2025-03-08 02:06:08,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:06:08,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 02:06:08,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:06:08,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 02:06:08,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:06:08,890 INFO L87 Difference]: Start difference. First operand 7900 states and 8270 transitions. Second operand has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:09,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:06:09,567 INFO L93 Difference]: Finished difference Result 15475 states and 16213 transitions. [2025-03-08 02:06:09,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 02:06:09,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 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 1437 [2025-03-08 02:06:09,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:06:09,578 INFO L225 Difference]: With dead ends: 15475 [2025-03-08 02:06:09,578 INFO L226 Difference]: Without dead ends: 7906 [2025-03-08 02:06:09,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 02:06:09,585 INFO L435 NwaCegarLoop]: 430 mSDtfsCounter, 217 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 02:06:09,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 444 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 02:06:09,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7906 states. [2025-03-08 02:06:09,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7906 to 7900. [2025-03-08 02:06:09,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7900 states, 7899 states have (on average 1.0467147740220282) internal successors, (8268), 7899 states have internal predecessors, (8268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:09,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7900 states to 7900 states and 8268 transitions. [2025-03-08 02:06:09,644 INFO L78 Accepts]: Start accepts. Automaton has 7900 states and 8268 transitions. Word has length 1437 [2025-03-08 02:06:09,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:06:09,644 INFO L471 AbstractCegarLoop]: Abstraction has 7900 states and 8268 transitions. [2025-03-08 02:06:09,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:09,645 INFO L276 IsEmpty]: Start isEmpty. Operand 7900 states and 8268 transitions. [2025-03-08 02:06:09,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1569 [2025-03-08 02:06:09,660 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:06:09,660 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-08 02:06:09,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 02:06:09,661 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:06:09,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:06:09,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1802817093, now seen corresponding path program 1 times [2025-03-08 02:06:09,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:06:09,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797277304] [2025-03-08 02:06:09,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:09,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:06:09,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1568 statements into 1 equivalence classes. [2025-03-08 02:06:09,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1568 of 1568 statements. [2025-03-08 02:06:09,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:09,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:10,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4870 backedges. 3117 proven. 0 refuted. 0 times theorem prover too weak. 1753 trivial. 0 not checked. [2025-03-08 02:06:10,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:06:10,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797277304] [2025-03-08 02:06:10,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797277304] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:06:10,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:06:10,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:06:10,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080331896] [2025-03-08 02:06:10,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:06:10,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:06:10,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:06:10,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:06:10,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:06:10,737 INFO L87 Difference]: Start difference. First operand 7900 states and 8268 transitions. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:11,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:06:11,255 INFO L93 Difference]: Finished difference Result 16456 states and 17205 transitions. [2025-03-08 02:06:11,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:06:11,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 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 1568 [2025-03-08 02:06:11,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:06:11,268 INFO L225 Difference]: With dead ends: 16456 [2025-03-08 02:06:11,268 INFO L226 Difference]: Without dead ends: 8887 [2025-03-08 02:06:11,274 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 [2025-03-08 02:06:11,275 INFO L435 NwaCegarLoop]: 433 mSDtfsCounter, 224 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 02:06:11,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 439 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 02:06:11,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8887 states. [2025-03-08 02:06:11,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8887 to 8887. [2025-03-08 02:06:11,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8887 states, 8886 states have (on average 1.0423137519693901) internal successors, (9262), 8886 states have internal predecessors, (9262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:11,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8887 states to 8887 states and 9262 transitions. [2025-03-08 02:06:11,341 INFO L78 Accepts]: Start accepts. Automaton has 8887 states and 9262 transitions. Word has length 1568 [2025-03-08 02:06:11,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:06:11,341 INFO L471 AbstractCegarLoop]: Abstraction has 8887 states and 9262 transitions. [2025-03-08 02:06:11,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:11,342 INFO L276 IsEmpty]: Start isEmpty. Operand 8887 states and 9262 transitions. [2025-03-08 02:06:11,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1587 [2025-03-08 02:06:11,357 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:06:11,357 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-08 02:06:11,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 02:06:11,358 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:06:11,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:06:11,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1774912970, now seen corresponding path program 1 times [2025-03-08 02:06:11,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:06:11,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326202664] [2025-03-08 02:06:11,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:11,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:06:11,454 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1586 statements into 1 equivalence classes. [2025-03-08 02:06:11,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1586 of 1586 statements. [2025-03-08 02:06:11,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:11,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:12,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4913 backedges. 3177 proven. 189 refuted. 0 times theorem prover too weak. 1547 trivial. 0 not checked. [2025-03-08 02:06:12,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:06:12,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326202664] [2025-03-08 02:06:12,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326202664] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 02:06:12,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660487004] [2025-03-08 02:06:12,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:12,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:06:12,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:06:12,189 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) [2025-03-08 02:06:12,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 02:06:12,291 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1586 statements into 1 equivalence classes. [2025-03-08 02:06:12,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1586 of 1586 statements. [2025-03-08 02:06:12,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:12,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:12,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 02:06:12,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 02:06:13,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4913 backedges. 2722 proven. 0 refuted. 0 times theorem prover too weak. 2191 trivial. 0 not checked. [2025-03-08 02:06:13,190 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 02:06:13,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660487004] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:06:13,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 02:06:13,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 02:06:13,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101394397] [2025-03-08 02:06:13,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:06:13,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:06:13,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:06:13,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:06:13,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-08 02:06:13,192 INFO L87 Difference]: Start difference. First operand 8887 states and 9262 transitions. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:13,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:06:13,683 INFO L93 Difference]: Finished difference Result 17443 states and 18191 transitions. [2025-03-08 02:06:13,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:06:13,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 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 1586 [2025-03-08 02:06:13,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:06:13,693 INFO L225 Difference]: With dead ends: 17443 [2025-03-08 02:06:13,693 INFO L226 Difference]: Without dead ends: 8887 [2025-03-08 02:06:13,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1590 GetRequests, 1586 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-08 02:06:13,700 INFO L435 NwaCegarLoop]: 371 mSDtfsCounter, 112 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 02:06:13,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 377 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 02:06:13,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8887 states. [2025-03-08 02:06:13,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8887 to 8887. [2025-03-08 02:06:13,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8887 states, 8886 states have (on average 1.036799459824443) internal successors, (9213), 8886 states have internal predecessors, (9213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:13,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8887 states to 8887 states and 9213 transitions. [2025-03-08 02:06:13,791 INFO L78 Accepts]: Start accepts. Automaton has 8887 states and 9213 transitions. Word has length 1586 [2025-03-08 02:06:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:06:13,792 INFO L471 AbstractCegarLoop]: Abstraction has 8887 states and 9213 transitions. [2025-03-08 02:06:13,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:13,792 INFO L276 IsEmpty]: Start isEmpty. Operand 8887 states and 9213 transitions. [2025-03-08 02:06:13,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1677 [2025-03-08 02:06:13,824 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:06:13,826 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-08 02:06:13,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 02:06:14,030 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,SelfDestructingSolverStorable12 [2025-03-08 02:06:14,030 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:06:14,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:06:14,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1461311387, now seen corresponding path program 1 times [2025-03-08 02:06:14,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:06:14,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401915092] [2025-03-08 02:06:14,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:14,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:06:14,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1676 statements into 1 equivalence classes. [2025-03-08 02:06:14,271 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1676 of 1676 statements. [2025-03-08 02:06:14,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:14,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:15,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4963 backedges. 3682 proven. 132 refuted. 0 times theorem prover too weak. 1149 trivial. 0 not checked. [2025-03-08 02:06:15,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:06:15,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401915092] [2025-03-08 02:06:15,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401915092] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 02:06:15,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843428316] [2025-03-08 02:06:15,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:15,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:06:15,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:06:15,248 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) [2025-03-08 02:06:15,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 02:06:15,354 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1676 statements into 1 equivalence classes. [2025-03-08 02:06:15,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1676 of 1676 statements. [2025-03-08 02:06:15,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:15,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:15,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 1938 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 02:06:15,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 02:06:17,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4963 backedges. 2196 proven. 201 refuted. 0 times theorem prover too weak. 2566 trivial. 0 not checked. [2025-03-08 02:06:17,454 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 02:06:20,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4963 backedges. 2196 proven. 201 refuted. 0 times theorem prover too weak. 2566 trivial. 0 not checked. [2025-03-08 02:06:20,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843428316] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 02:06:20,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 02:06:20,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2025-03-08 02:06:20,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855516922] [2025-03-08 02:06:20,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 02:06:20,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 02:06:20,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:06:20,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 02:06:20,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-08 02:06:20,230 INFO L87 Difference]: Start difference. First operand 8887 states and 9213 transitions. Second operand has 9 states, 9 states have (on average 204.77777777777777) internal successors, (1843), 9 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:24,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:06:24,587 INFO L93 Difference]: Finished difference Result 33566 states and 34834 transitions. [2025-03-08 02:06:24,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-08 02:06:24,588 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 204.77777777777777) internal successors, (1843), 9 states have internal predecessors, (1843), 0 states have call successors, (0), 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 1676 [2025-03-08 02:06:24,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:06:24,612 INFO L225 Difference]: With dead ends: 33566 [2025-03-08 02:06:24,612 INFO L226 Difference]: Without dead ends: 25010 [2025-03-08 02:06:24,624 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3377 GetRequests, 3359 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2025-03-08 02:06:24,625 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 3206 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 8083 mSolverCounterSat, 632 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3206 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 8715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 632 IncrementalHoareTripleChecker+Valid, 8083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2025-03-08 02:06:24,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3206 Valid, 104 Invalid, 8715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [632 Valid, 8083 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2025-03-08 02:06:24,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25010 states. [2025-03-08 02:06:24,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25010 to 18428. [2025-03-08 02:06:24,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18428 states, 18427 states have (on average 1.0354371302979324) internal successors, (19080), 18427 states have internal predecessors, (19080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:24,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18428 states to 18428 states and 19080 transitions. [2025-03-08 02:06:24,810 INFO L78 Accepts]: Start accepts. Automaton has 18428 states and 19080 transitions. Word has length 1676 [2025-03-08 02:06:24,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:06:24,810 INFO L471 AbstractCegarLoop]: Abstraction has 18428 states and 19080 transitions. [2025-03-08 02:06:24,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 204.77777777777777) internal successors, (1843), 9 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:24,811 INFO L276 IsEmpty]: Start isEmpty. Operand 18428 states and 19080 transitions. [2025-03-08 02:06:24,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1769 [2025-03-08 02:06:24,835 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:06:24,836 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:06:24,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 02:06:25,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:06:25,037 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:06:25,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:06:25,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1507936812, now seen corresponding path program 1 times [2025-03-08 02:06:25,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:06:25,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641614944] [2025-03-08 02:06:25,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:25,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:06:25,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1768 statements into 1 equivalence classes. [2025-03-08 02:06:25,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1768 of 1768 statements. [2025-03-08 02:06:25,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:25,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:26,922 INFO L134 CoverageAnalysis]: Checked inductivity of 5872 backedges. 2310 proven. 156 refuted. 0 times theorem prover too weak. 3406 trivial. 0 not checked. [2025-03-08 02:06:26,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:06:26,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641614944] [2025-03-08 02:06:26,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641614944] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 02:06:26,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76739693] [2025-03-08 02:06:26,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:26,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:06:26,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:06:26,924 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) [2025-03-08 02:06:26,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 02:06:27,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1768 statements into 1 equivalence classes. [2025-03-08 02:06:27,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1768 of 1768 statements. [2025-03-08 02:06:27,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:27,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:27,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 02:06:27,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 02:06:27,649 INFO L134 CoverageAnalysis]: Checked inductivity of 5872 backedges. 2466 proven. 0 refuted. 0 times theorem prover too weak. 3406 trivial. 0 not checked. [2025-03-08 02:06:27,649 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 02:06:27,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76739693] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:06:27,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 02:06:27,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2025-03-08 02:06:27,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081341835] [2025-03-08 02:06:27,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:06:27,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:06:27,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:06:27,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:06:27,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 02:06:27,652 INFO L87 Difference]: Start difference. First operand 18428 states and 19080 transitions. Second operand has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:28,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:06:28,251 INFO L93 Difference]: Finished difference Result 37841 states and 39185 transitions. [2025-03-08 02:06:28,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:06:28,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 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 1768 [2025-03-08 02:06:28,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:06:28,266 INFO L225 Difference]: With dead ends: 37841 [2025-03-08 02:06:28,266 INFO L226 Difference]: Without dead ends: 19744 [2025-03-08 02:06:28,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1772 GetRequests, 1767 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 02:06:28,277 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 173 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 02:06:28,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 96 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 02:06:28,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19744 states. [2025-03-08 02:06:28,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19744 to 19415. [2025-03-08 02:06:28,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19415 states, 19414 states have (on average 1.033532502317915) internal successors, (20065), 19414 states have internal predecessors, (20065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:28,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19415 states to 19415 states and 20065 transitions. [2025-03-08 02:06:28,431 INFO L78 Accepts]: Start accepts. Automaton has 19415 states and 20065 transitions. Word has length 1768 [2025-03-08 02:06:28,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:06:28,431 INFO L471 AbstractCegarLoop]: Abstraction has 19415 states and 20065 transitions. [2025-03-08 02:06:28,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:28,432 INFO L276 IsEmpty]: Start isEmpty. Operand 19415 states and 20065 transitions. [2025-03-08 02:06:28,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2069 [2025-03-08 02:06:28,457 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:06:28,458 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:06:28,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 02:06:28,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-08 02:06:28,659 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:06:28,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:06:28,660 INFO L85 PathProgramCache]: Analyzing trace with hash 903268121, now seen corresponding path program 1 times [2025-03-08 02:06:28,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:06:28,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108895702] [2025-03-08 02:06:28,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:28,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:06:28,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2068 statements into 1 equivalence classes. [2025-03-08 02:06:28,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2068 of 2068 statements. [2025-03-08 02:06:28,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:28,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:29,563 INFO L134 CoverageAnalysis]: Checked inductivity of 7645 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 7547 trivial. 0 not checked. [2025-03-08 02:06:29,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:06:29,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108895702] [2025-03-08 02:06:29,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108895702] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:06:29,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:06:29,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:06:29,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171928832] [2025-03-08 02:06:29,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:06:29,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:06:29,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:06:29,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:06:29,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:06:29,564 INFO L87 Difference]: Start difference. First operand 19415 states and 20065 transitions. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:30,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:06:30,158 INFO L93 Difference]: Finished difference Result 43105 states and 44531 transitions. [2025-03-08 02:06:30,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:06:30,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 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 2068 [2025-03-08 02:06:30,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:06:30,179 INFO L225 Difference]: With dead ends: 43105 [2025-03-08 02:06:30,179 INFO L226 Difference]: Without dead ends: 23692 [2025-03-08 02:06:30,193 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 [2025-03-08 02:06:30,193 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 326 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 02:06:30,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 41 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 02:06:30,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23692 states. [2025-03-08 02:06:30,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23692 to 20073. [2025-03-08 02:06:30,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20073 states, 20072 states have (on average 1.0338282184137106) internal successors, (20751), 20072 states have internal predecessors, (20751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:30,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20073 states to 20073 states and 20751 transitions. [2025-03-08 02:06:30,355 INFO L78 Accepts]: Start accepts. Automaton has 20073 states and 20751 transitions. Word has length 2068 [2025-03-08 02:06:30,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:06:30,356 INFO L471 AbstractCegarLoop]: Abstraction has 20073 states and 20751 transitions. [2025-03-08 02:06:30,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:30,356 INFO L276 IsEmpty]: Start isEmpty. Operand 20073 states and 20751 transitions. [2025-03-08 02:06:30,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2112 [2025-03-08 02:06:30,381 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:06:30,381 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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] [2025-03-08 02:06:30,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 02:06:30,382 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:06:30,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:06:30,383 INFO L85 PathProgramCache]: Analyzing trace with hash 781176228, now seen corresponding path program 1 times [2025-03-08 02:06:30,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:06:30,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232454001] [2025-03-08 02:06:30,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:30,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:06:30,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2111 statements into 1 equivalence classes. [2025-03-08 02:06:30,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2111 of 2111 statements. [2025-03-08 02:06:30,524 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:30,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:33,180 INFO L134 CoverageAnalysis]: Checked inductivity of 8721 backedges. 4930 proven. 1581 refuted. 0 times theorem prover too weak. 2210 trivial. 0 not checked. [2025-03-08 02:06:33,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:06:33,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232454001] [2025-03-08 02:06:33,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232454001] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 02:06:33,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525707771] [2025-03-08 02:06:33,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:33,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:06:33,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:06:33,184 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) [2025-03-08 02:06:33,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 02:06:33,308 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2111 statements into 1 equivalence classes. [2025-03-08 02:06:33,540 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2111 of 2111 statements. [2025-03-08 02:06:33,540 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:33,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:33,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 2439 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 02:06:33,558 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 02:06:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 8721 backedges. 1645 proven. 0 refuted. 0 times theorem prover too weak. 7076 trivial. 0 not checked. [2025-03-08 02:06:33,725 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 02:06:33,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525707771] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:06:33,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 02:06:33,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 02:06:33,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378870585] [2025-03-08 02:06:33,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:06:33,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:06:33,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:06:33,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:06:33,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 02:06:33,727 INFO L87 Difference]: Start difference. First operand 20073 states and 20751 transitions. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:34,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:06:34,318 INFO L93 Difference]: Finished difference Result 41131 states and 42501 transitions. [2025-03-08 02:06:34,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:06:34,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 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 2111 [2025-03-08 02:06:34,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:06:34,336 INFO L225 Difference]: With dead ends: 41131 [2025-03-08 02:06:34,336 INFO L226 Difference]: Without dead ends: 21060 [2025-03-08 02:06:34,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2116 GetRequests, 2112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 02:06:34,348 INFO L435 NwaCegarLoop]: 423 mSDtfsCounter, 161 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 02:06:34,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 429 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 02:06:34,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21060 states. [2025-03-08 02:06:34,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21060 to 18099. [2025-03-08 02:06:34,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18099 states, 18098 states have (on average 1.0309979003204774) internal successors, (18659), 18098 states have internal predecessors, (18659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:34,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18099 states to 18099 states and 18659 transitions. [2025-03-08 02:06:34,474 INFO L78 Accepts]: Start accepts. Automaton has 18099 states and 18659 transitions. Word has length 2111 [2025-03-08 02:06:34,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:06:34,475 INFO L471 AbstractCegarLoop]: Abstraction has 18099 states and 18659 transitions. [2025-03-08 02:06:34,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:34,475 INFO L276 IsEmpty]: Start isEmpty. Operand 18099 states and 18659 transitions. [2025-03-08 02:06:34,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2272 [2025-03-08 02:06:34,502 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:06:34,503 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:06:34,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-08 02:06:34,703 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,SelfDestructingSolverStorable16 [2025-03-08 02:06:34,703 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:06:34,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:06:34,704 INFO L85 PathProgramCache]: Analyzing trace with hash -218125748, now seen corresponding path program 1 times [2025-03-08 02:06:34,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:06:34,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115278394] [2025-03-08 02:06:34,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:34,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:06:34,826 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2271 statements into 1 equivalence classes. [2025-03-08 02:06:34,889 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2271 of 2271 statements. [2025-03-08 02:06:34,889 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:34,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:36,594 INFO L134 CoverageAnalysis]: Checked inductivity of 9220 backedges. 4236 proven. 0 refuted. 0 times theorem prover too weak. 4984 trivial. 0 not checked. [2025-03-08 02:06:36,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:06:36,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115278394] [2025-03-08 02:06:36,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115278394] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:06:36,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:06:36,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:06:36,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059125445] [2025-03-08 02:06:36,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:06:36,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:06:36,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:06:36,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:06:36,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:06:36,596 INFO L87 Difference]: Start difference. First operand 18099 states and 18659 transitions. Second operand has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:37,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:06:37,247 INFO L93 Difference]: Finished difference Result 39486 states and 40680 transitions. [2025-03-08 02:06:37,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:06:37,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 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 2271 [2025-03-08 02:06:37,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:06:37,262 INFO L225 Difference]: With dead ends: 39486 [2025-03-08 02:06:37,262 INFO L226 Difference]: Without dead ends: 21389 [2025-03-08 02:06:37,267 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 [2025-03-08 02:06:37,267 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 207 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 02:06:37,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 57 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 02:06:37,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21389 states. [2025-03-08 02:06:37,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21389 to 19086. [2025-03-08 02:06:37,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19086 states, 19085 states have (on average 1.0296567985328793) internal successors, (19651), 19085 states have internal predecessors, (19651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:37,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19086 states to 19086 states and 19651 transitions. [2025-03-08 02:06:37,389 INFO L78 Accepts]: Start accepts. Automaton has 19086 states and 19651 transitions. Word has length 2271 [2025-03-08 02:06:37,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:06:37,390 INFO L471 AbstractCegarLoop]: Abstraction has 19086 states and 19651 transitions. [2025-03-08 02:06:37,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:37,390 INFO L276 IsEmpty]: Start isEmpty. Operand 19086 states and 19651 transitions. [2025-03-08 02:06:37,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2313 [2025-03-08 02:06:37,419 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:06:37,419 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:06:37,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 02:06:37,419 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:06:37,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:06:37,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1894627783, now seen corresponding path program 1 times [2025-03-08 02:06:37,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:06:37,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297487608] [2025-03-08 02:06:37,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:37,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:06:37,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2312 statements into 1 equivalence classes. [2025-03-08 02:06:37,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2312 of 2312 statements. [2025-03-08 02:06:37,592 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:37,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:40,968 INFO L134 CoverageAnalysis]: Checked inductivity of 10022 backedges. 6566 proven. 553 refuted. 0 times theorem prover too weak. 2903 trivial. 0 not checked. [2025-03-08 02:06:40,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:06:40,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297487608] [2025-03-08 02:06:40,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297487608] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 02:06:40,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075904212] [2025-03-08 02:06:40,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:40,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:06:40,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:06:40,970 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) [2025-03-08 02:06:40,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 02:06:41,102 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2312 statements into 1 equivalence classes. [2025-03-08 02:06:41,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2312 of 2312 statements. [2025-03-08 02:06:41,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:41,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:41,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 2670 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 02:06:41,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 02:06:41,519 INFO L134 CoverageAnalysis]: Checked inductivity of 10022 backedges. 5619 proven. 0 refuted. 0 times theorem prover too weak. 4403 trivial. 0 not checked. [2025-03-08 02:06:41,519 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 02:06:41,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075904212] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:06:41,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 02:06:41,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-03-08 02:06:41,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850251918] [2025-03-08 02:06:41,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:06:41,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:06:41,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:06:41,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:06:41,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 02:06:41,522 INFO L87 Difference]: Start difference. First operand 19086 states and 19651 transitions. Second operand has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:42,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:06:42,093 INFO L93 Difference]: Finished difference Result 38828 states and 39975 transitions. [2025-03-08 02:06:42,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:06:42,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 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 2312 [2025-03-08 02:06:42,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:06:42,111 INFO L225 Difference]: With dead ends: 38828 [2025-03-08 02:06:42,111 INFO L226 Difference]: Without dead ends: 19744 [2025-03-08 02:06:42,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2319 GetRequests, 2314 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 02:06:42,121 INFO L435 NwaCegarLoop]: 432 mSDtfsCounter, 263 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 02:06:42,121 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 438 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 02:06:42,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19744 states. [2025-03-08 02:06:42,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19744 to 19086. [2025-03-08 02:06:42,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19086 states, 19085 states have (on average 1.0296044013623264) internal successors, (19650), 19085 states have internal predecessors, (19650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:42,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19086 states to 19086 states and 19650 transitions. [2025-03-08 02:06:42,251 INFO L78 Accepts]: Start accepts. Automaton has 19086 states and 19650 transitions. Word has length 2312 [2025-03-08 02:06:42,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:06:42,251 INFO L471 AbstractCegarLoop]: Abstraction has 19086 states and 19650 transitions. [2025-03-08 02:06:42,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:42,252 INFO L276 IsEmpty]: Start isEmpty. Operand 19086 states and 19650 transitions. [2025-03-08 02:06:42,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2397 [2025-03-08 02:06:42,322 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:06:42,323 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 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, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 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] [2025-03-08 02:06:42,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-08 02:06:42,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:06:42,523 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:06:42,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:06:42,524 INFO L85 PathProgramCache]: Analyzing trace with hash -905135605, now seen corresponding path program 1 times [2025-03-08 02:06:42,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:06:42,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259898836] [2025-03-08 02:06:42,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:42,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:06:42,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2396 statements into 1 equivalence classes. [2025-03-08 02:06:42,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2396 of 2396 statements. [2025-03-08 02:06:42,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:42,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:44,843 INFO L134 CoverageAnalysis]: Checked inductivity of 11315 backedges. 7816 proven. 153 refuted. 0 times theorem prover too weak. 3346 trivial. 0 not checked. [2025-03-08 02:06:44,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:06:44,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259898836] [2025-03-08 02:06:44,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259898836] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 02:06:44,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63171516] [2025-03-08 02:06:44,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:44,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:06:44,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:06:44,845 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) [2025-03-08 02:06:44,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 02:06:44,986 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2396 statements into 1 equivalence classes. [2025-03-08 02:06:45,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2396 of 2396 statements. [2025-03-08 02:06:45,233 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:45,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:45,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 2762 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 02:06:45,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 02:06:45,348 INFO L134 CoverageAnalysis]: Checked inductivity of 11315 backedges. 6174 proven. 0 refuted. 0 times theorem prover too weak. 5141 trivial. 0 not checked. [2025-03-08 02:06:45,349 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 02:06:45,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63171516] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:06:45,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 02:06:45,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-03-08 02:06:45,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566848248] [2025-03-08 02:06:45,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:06:45,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:06:45,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:06:45,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:06:45,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 02:06:45,351 INFO L87 Difference]: Start difference. First operand 19086 states and 19650 transitions. Second operand has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:45,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:06:45,947 INFO L93 Difference]: Finished difference Result 39815 states and 41011 transitions. [2025-03-08 02:06:45,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:06:45,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 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 2396 [2025-03-08 02:06:45,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:06:45,966 INFO L225 Difference]: With dead ends: 39815 [2025-03-08 02:06:45,967 INFO L226 Difference]: Without dead ends: 20731 [2025-03-08 02:06:45,980 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2401 GetRequests, 2396 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 02:06:45,980 INFO L435 NwaCegarLoop]: 420 mSDtfsCounter, 223 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 02:06:45,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 425 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 02:06:45,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20731 states. [2025-03-08 02:06:46,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20731 to 20731. [2025-03-08 02:06:46,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20731 states, 20730 states have (on average 1.0277375783888085) internal successors, (21305), 20730 states have internal predecessors, (21305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:46,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20731 states to 20731 states and 21305 transitions. [2025-03-08 02:06:46,134 INFO L78 Accepts]: Start accepts. Automaton has 20731 states and 21305 transitions. Word has length 2396 [2025-03-08 02:06:46,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:06:46,134 INFO L471 AbstractCegarLoop]: Abstraction has 20731 states and 21305 transitions. [2025-03-08 02:06:46,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:46,135 INFO L276 IsEmpty]: Start isEmpty. Operand 20731 states and 21305 transitions. [2025-03-08 02:06:46,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2509 [2025-03-08 02:06:46,167 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:06:46,168 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:06:46,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-08 02:06:46,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:06:46,368 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:06:46,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:06:46,369 INFO L85 PathProgramCache]: Analyzing trace with hash 980660221, now seen corresponding path program 1 times [2025-03-08 02:06:46,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:06:46,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177584455] [2025-03-08 02:06:46,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:46,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:06:46,473 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2508 statements into 1 equivalence classes. [2025-03-08 02:06:46,542 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2508 of 2508 statements. [2025-03-08 02:06:46,543 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:46,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 12061 backedges. 8681 proven. 91 refuted. 0 times theorem prover too weak. 3289 trivial. 0 not checked. [2025-03-08 02:06:48,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:06:48,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177584455] [2025-03-08 02:06:48,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177584455] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 02:06:48,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729904451] [2025-03-08 02:06:48,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:48,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:06:48,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:06:48,516 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 02:06:48,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 02:06:48,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2508 statements into 1 equivalence classes. [2025-03-08 02:06:48,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2508 of 2508 statements. [2025-03-08 02:06:48,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:48,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:48,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 2877 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 02:06:48,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 02:06:49,232 INFO L134 CoverageAnalysis]: Checked inductivity of 12061 backedges. 7264 proven. 0 refuted. 0 times theorem prover too weak. 4797 trivial. 0 not checked. [2025-03-08 02:06:49,233 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 02:06:49,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729904451] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:06:49,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 02:06:49,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-08 02:06:49,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169871130] [2025-03-08 02:06:49,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:06:49,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 02:06:49,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:06:49,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 02:06:49,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 02:06:49,235 INFO L87 Difference]: Start difference. First operand 20731 states and 21305 transitions. Second operand has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:50,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:06:50,101 INFO L93 Difference]: Finished difference Result 42447 states and 43617 transitions. [2025-03-08 02:06:50,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 02:06:50,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 0 states have call successors, (0), 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 2508 [2025-03-08 02:06:50,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:06:50,120 INFO L225 Difference]: With dead ends: 42447 [2025-03-08 02:06:50,120 INFO L226 Difference]: Without dead ends: 21718 [2025-03-08 02:06:50,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2513 GetRequests, 2507 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 02:06:50,133 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 495 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 02:06:50,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 62 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 02:06:50,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21718 states. [2025-03-08 02:06:50,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21718 to 21060. [2025-03-08 02:06:50,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21060 states, 21059 states have (on average 1.0276366399164252) internal successors, (21641), 21059 states have internal predecessors, (21641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:50,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21060 states to 21060 states and 21641 transitions. [2025-03-08 02:06:50,394 INFO L78 Accepts]: Start accepts. Automaton has 21060 states and 21641 transitions. Word has length 2508 [2025-03-08 02:06:50,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:06:50,395 INFO L471 AbstractCegarLoop]: Abstraction has 21060 states and 21641 transitions. [2025-03-08 02:06:50,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:50,395 INFO L276 IsEmpty]: Start isEmpty. Operand 21060 states and 21641 transitions. [2025-03-08 02:06:50,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2638 [2025-03-08 02:06:50,430 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:06:50,430 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-08 02:06:50,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-08 02:06:50,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-03-08 02:06:50,632 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:06:50,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:06:50,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1836637977, now seen corresponding path program 1 times [2025-03-08 02:06:50,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:06:50,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545378030] [2025-03-08 02:06:50,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:50,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:06:50,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2637 statements into 1 equivalence classes. [2025-03-08 02:06:50,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2637 of 2637 statements. [2025-03-08 02:06:50,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:50,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:52,716 INFO L134 CoverageAnalysis]: Checked inductivity of 12253 backedges. 7737 proven. 0 refuted. 0 times theorem prover too weak. 4516 trivial. 0 not checked. [2025-03-08 02:06:52,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:06:52,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545378030] [2025-03-08 02:06:52,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545378030] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:06:52,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:06:52,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:06:52,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94584908] [2025-03-08 02:06:52,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:06:52,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:06:52,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:06:52,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:06:52,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:06:52,719 INFO L87 Difference]: Start difference. First operand 21060 states and 21641 transitions. Second operand has 3 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:53,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:06:53,326 INFO L93 Difference]: Finished difference Result 45079 states and 46322 transitions. [2025-03-08 02:06:53,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:06:53,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 0 states have call successors, (0), 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 2637 [2025-03-08 02:06:53,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:06:53,348 INFO L225 Difference]: With dead ends: 45079 [2025-03-08 02:06:53,348 INFO L226 Difference]: Without dead ends: 24021 [2025-03-08 02:06:53,361 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 [2025-03-08 02:06:53,362 INFO L435 NwaCegarLoop]: 409 mSDtfsCounter, 41 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 02:06:53,363 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 415 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 02:06:53,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24021 states. [2025-03-08 02:06:53,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24021 to 22047. [2025-03-08 02:06:53,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22047 states, 22046 states have (on average 1.0286673319423025) internal successors, (22678), 22046 states have internal predecessors, (22678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:53,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22047 states to 22047 states and 22678 transitions. [2025-03-08 02:06:53,535 INFO L78 Accepts]: Start accepts. Automaton has 22047 states and 22678 transitions. Word has length 2637 [2025-03-08 02:06:53,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:06:53,536 INFO L471 AbstractCegarLoop]: Abstraction has 22047 states and 22678 transitions. [2025-03-08 02:06:53,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:53,536 INFO L276 IsEmpty]: Start isEmpty. Operand 22047 states and 22678 transitions. [2025-03-08 02:06:53,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2638 [2025-03-08 02:06:53,571 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:06:53,572 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:06:53,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-08 02:06:53,572 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:06:53,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:06:53,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1754311998, now seen corresponding path program 1 times [2025-03-08 02:06:53,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:06:53,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902198525] [2025-03-08 02:06:53,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:53,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:06:53,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2637 statements into 1 equivalence classes. [2025-03-08 02:06:53,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2637 of 2637 statements. [2025-03-08 02:06:53,764 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:53,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:55,851 INFO L134 CoverageAnalysis]: Checked inductivity of 12965 backedges. 9211 proven. 91 refuted. 0 times theorem prover too weak. 3663 trivial. 0 not checked. [2025-03-08 02:06:55,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:06:55,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902198525] [2025-03-08 02:06:55,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902198525] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 02:06:55,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731667537] [2025-03-08 02:06:55,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:55,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:06:55,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:06:55,853 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 02:06:55,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-08 02:06:56,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2637 statements into 1 equivalence classes. [2025-03-08 02:06:56,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2637 of 2637 statements. [2025-03-08 02:06:56,315 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:56,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:06:56,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 3006 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 02:06:56,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 02:06:56,635 INFO L134 CoverageAnalysis]: Checked inductivity of 12965 backedges. 8168 proven. 0 refuted. 0 times theorem prover too weak. 4797 trivial. 0 not checked. [2025-03-08 02:06:56,635 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 02:06:56,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731667537] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:06:56,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 02:06:56,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-08 02:06:56,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494139166] [2025-03-08 02:06:56,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:06:56,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 02:06:56,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:06:56,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 02:06:56,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 02:06:56,637 INFO L87 Difference]: Start difference. First operand 22047 states and 22678 transitions. Second operand has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:57,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:06:57,418 INFO L93 Difference]: Finished difference Result 44750 states and 46021 transitions. [2025-03-08 02:06:57,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 02:06:57,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 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 2637 [2025-03-08 02:06:57,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:06:57,438 INFO L225 Difference]: With dead ends: 44750 [2025-03-08 02:06:57,438 INFO L226 Difference]: Without dead ends: 22705 [2025-03-08 02:06:57,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2642 GetRequests, 2636 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 02:06:57,452 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 466 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 02:06:57,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 62 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 02:06:57,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22705 states. [2025-03-08 02:06:57,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22705 to 21389. [2025-03-08 02:06:57,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21389 states, 21388 states have (on average 1.0285206657939032) internal successors, (21998), 21388 states have internal predecessors, (21998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:57,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21389 states to 21389 states and 21998 transitions. [2025-03-08 02:06:57,621 INFO L78 Accepts]: Start accepts. Automaton has 21389 states and 21998 transitions. Word has length 2637 [2025-03-08 02:06:57,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:06:57,622 INFO L471 AbstractCegarLoop]: Abstraction has 21389 states and 21998 transitions. [2025-03-08 02:06:57,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:06:57,622 INFO L276 IsEmpty]: Start isEmpty. Operand 21389 states and 21998 transitions. [2025-03-08 02:06:57,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2650 [2025-03-08 02:06:57,656 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:06:57,657 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2025-03-08 02:06:57,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-08 02:06:57,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:06:57,858 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:06:57,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:06:57,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1051753019, now seen corresponding path program 1 times [2025-03-08 02:06:57,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:06:57,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752954024] [2025-03-08 02:06:57,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:06:57,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:06:58,000 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2649 statements into 1 equivalence classes. [2025-03-08 02:06:58,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2649 of 2649 statements. [2025-03-08 02:06:58,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:06:58,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:07:00,581 INFO L134 CoverageAnalysis]: Checked inductivity of 12191 backedges. 7956 proven. 0 refuted. 0 times theorem prover too weak. 4235 trivial. 0 not checked. [2025-03-08 02:07:00,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:07:00,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752954024] [2025-03-08 02:07:00,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752954024] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:07:00,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:07:00,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 02:07:00,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555840451] [2025-03-08 02:07:00,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:07:00,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 02:07:00,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:07:00,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 02:07:00,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:07:00,583 INFO L87 Difference]: Start difference. First operand 21389 states and 21998 transitions. Second operand has 4 states, 4 states have (on average 229.5) internal successors, (918), 4 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:07:01,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:07:01,521 INFO L93 Difference]: Finished difference Result 46395 states and 47731 transitions. [2025-03-08 02:07:01,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 02:07:01,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 229.5) internal successors, (918), 4 states have internal predecessors, (918), 0 states have call successors, (0), 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 2649 [2025-03-08 02:07:01,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:07:01,545 INFO L225 Difference]: With dead ends: 46395 [2025-03-08 02:07:01,545 INFO L226 Difference]: Without dead ends: 25008 [2025-03-08 02:07:01,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:07:01,559 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 308 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 02:07:01,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 47 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1494 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 02:07:01,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25008 states. [2025-03-08 02:07:01,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25008 to 22376. [2025-03-08 02:07:01,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22376 states, 22375 states have (on average 1.0279329608938548) internal successors, (23000), 22375 states have internal predecessors, (23000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:07:01,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22376 states to 22376 states and 23000 transitions. [2025-03-08 02:07:01,735 INFO L78 Accepts]: Start accepts. Automaton has 22376 states and 23000 transitions. Word has length 2649 [2025-03-08 02:07:01,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:07:01,736 INFO L471 AbstractCegarLoop]: Abstraction has 22376 states and 23000 transitions. [2025-03-08 02:07:01,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 229.5) internal successors, (918), 4 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:07:01,736 INFO L276 IsEmpty]: Start isEmpty. Operand 22376 states and 23000 transitions. [2025-03-08 02:07:01,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2767 [2025-03-08 02:07:01,774 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:07:01,775 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 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, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-08 02:07:01,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-08 02:07:01,775 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:07:01,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:07:01,776 INFO L85 PathProgramCache]: Analyzing trace with hash 249458095, now seen corresponding path program 1 times [2025-03-08 02:07:01,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:07:01,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35714272] [2025-03-08 02:07:01,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:07:01,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:07:01,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2766 statements into 1 equivalence classes. [2025-03-08 02:07:01,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2766 of 2766 statements. [2025-03-08 02:07:01,972 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:07:01,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:07:05,181 INFO L134 CoverageAnalysis]: Checked inductivity of 13501 backedges. 8551 proven. 79 refuted. 0 times theorem prover too weak. 4871 trivial. 0 not checked. [2025-03-08 02:07:05,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:07:05,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35714272] [2025-03-08 02:07:05,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35714272] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 02:07:05,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027657198] [2025-03-08 02:07:05,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:07:05,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:07:05,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:07:05,184 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 02:07:05,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-08 02:07:05,345 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2766 statements into 1 equivalence classes. [2025-03-08 02:07:05,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2766 of 2766 statements. [2025-03-08 02:07:05,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:07:05,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:07:05,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 3144 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 02:07:05,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 02:07:06,521 INFO L134 CoverageAnalysis]: Checked inductivity of 13501 backedges. 8551 proven. 79 refuted. 0 times theorem prover too weak. 4871 trivial. 0 not checked. [2025-03-08 02:07:06,521 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 02:07:07,657 INFO L134 CoverageAnalysis]: Checked inductivity of 13501 backedges. 8236 proven. 0 refuted. 0 times theorem prover too weak. 5265 trivial. 0 not checked. [2025-03-08 02:07:07,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027657198] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 02:07:07,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 02:07:07,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4] total 8 [2025-03-08 02:07:07,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274317933] [2025-03-08 02:07:07,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:07:07,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:07:07,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:07:07,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:07:07,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-08 02:07:07,660 INFO L87 Difference]: Start difference. First operand 22376 states and 23000 transitions. Second operand has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:07:08,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:07:08,294 INFO L93 Difference]: Finished difference Result 45408 states and 46673 transitions. [2025-03-08 02:07:08,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:07:08,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 0 states have call successors, (0), 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 2766 [2025-03-08 02:07:08,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:07:08,317 INFO L225 Difference]: With dead ends: 45408 [2025-03-08 02:07:08,317 INFO L226 Difference]: Without dead ends: 23034 [2025-03-08 02:07:08,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5535 GetRequests, 5529 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-08 02:07:08,330 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 90 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 02:07:08,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 21 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 02:07:08,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23034 states. [2025-03-08 02:07:08,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23034 to 22376. [2025-03-08 02:07:08,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22376 states, 22375 states have (on average 1.0260558659217878) internal successors, (22958), 22375 states have internal predecessors, (22958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:07:08,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22376 states to 22376 states and 22958 transitions. [2025-03-08 02:07:08,492 INFO L78 Accepts]: Start accepts. Automaton has 22376 states and 22958 transitions. Word has length 2766 [2025-03-08 02:07:08,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:07:08,492 INFO L471 AbstractCegarLoop]: Abstraction has 22376 states and 22958 transitions. [2025-03-08 02:07:08,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:07:08,492 INFO L276 IsEmpty]: Start isEmpty. Operand 22376 states and 22958 transitions. [2025-03-08 02:07:08,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2775 [2025-03-08 02:07:08,530 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:07:08,530 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 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] [2025-03-08 02:07:08,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-08 02:07:08,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-08 02:07:08,731 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:07:08,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:07:08,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1877643037, now seen corresponding path program 1 times [2025-03-08 02:07:08,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:07:08,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91727621] [2025-03-08 02:07:08,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:07:08,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:07:08,844 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2774 statements into 1 equivalence classes. [2025-03-08 02:07:08,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2774 of 2774 statements. [2025-03-08 02:07:08,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:07:08,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:07:10,318 INFO L134 CoverageAnalysis]: Checked inductivity of 13971 backedges. 5294 proven. 0 refuted. 0 times theorem prover too weak. 8677 trivial. 0 not checked. [2025-03-08 02:07:10,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:07:10,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91727621] [2025-03-08 02:07:10,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91727621] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:07:10,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:07:10,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:07:10,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073622478] [2025-03-08 02:07:10,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:07:10,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:07:10,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:07:10,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:07:10,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:07:10,321 INFO L87 Difference]: Start difference. First operand 22376 states and 22958 transitions. Second operand has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:07:10,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:07:10,948 INFO L93 Difference]: Finished difference Result 47711 states and 48930 transitions. [2025-03-08 02:07:10,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:07:10,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 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 2774 [2025-03-08 02:07:10,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:07:10,972 INFO L225 Difference]: With dead ends: 47711 [2025-03-08 02:07:10,972 INFO L226 Difference]: Without dead ends: 25337 [2025-03-08 02:07:10,985 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 [2025-03-08 02:07:10,985 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 120 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 02:07:10,985 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 56 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 02:07:10,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25337 states. [2025-03-08 02:07:11,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25337 to 22047. [2025-03-08 02:07:11,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22047 states, 22046 states have (on average 1.0246756781275514) internal successors, (22590), 22046 states have internal predecessors, (22590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:07:11,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22047 states to 22047 states and 22590 transitions. [2025-03-08 02:07:11,241 INFO L78 Accepts]: Start accepts. Automaton has 22047 states and 22590 transitions. Word has length 2774 [2025-03-08 02:07:11,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:07:11,241 INFO L471 AbstractCegarLoop]: Abstraction has 22047 states and 22590 transitions. [2025-03-08 02:07:11,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:07:11,242 INFO L276 IsEmpty]: Start isEmpty. Operand 22047 states and 22590 transitions. [2025-03-08 02:07:11,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2832 [2025-03-08 02:07:11,280 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:07:11,281 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 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] [2025-03-08 02:07:11,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-08 02:07:11,281 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:07:11,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:07:11,282 INFO L85 PathProgramCache]: Analyzing trace with hash -200628674, now seen corresponding path program 1 times [2025-03-08 02:07:11,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:07:11,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285458044] [2025-03-08 02:07:11,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:07:11,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:07:11,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2831 statements into 1 equivalence classes.