./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem18_label38.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem18_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 b3990b85e763534edf1f6c5cc073cba3fb338d90da8c9274c5799f3d3cad0b12 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 15:25:29,937 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 15:25:29,984 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 15:25:29,990 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 15:25:29,991 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 15:25:30,012 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 15:25:30,013 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 15:25:30,014 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 15:25:30,014 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 15:25:30,014 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 15:25:30,014 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 15:25:30,014 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 15:25:30,014 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 15:25:30,015 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 15:25:30,015 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 15:25:30,016 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 15:25:30,016 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 15:25:30,016 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 15:25:30,016 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 15:25:30,016 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 15:25:30,016 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 15:25:30,016 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 15:25:30,016 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 15:25:30,016 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 15:25:30,016 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 15:25:30,016 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 15:25:30,016 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 15:25:30,016 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 15:25:30,016 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 15:25:30,016 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 15:25:30,016 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 15:25:30,016 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 15:25:30,016 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:25:30,017 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 15:25:30,017 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 15:25:30,017 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 15:25:30,017 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 15:25:30,017 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 15:25:30,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 15:25:30,017 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 15:25:30,017 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 15:25:30,017 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 15:25:30,017 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 15:25:30,017 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 -> b3990b85e763534edf1f6c5cc073cba3fb338d90da8c9274c5799f3d3cad0b12 [2025-03-16 15:25:30,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 15:25:30,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 15:25:30,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 15:25:30,240 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 15:25:30,240 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 15:25:30,244 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem18_label38.c [2025-03-16 15:25:31,379 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c957036e/264dd2fd79ed4a61a32082debc87e321/FLAG6ed08f558 [2025-03-16 15:25:31,731 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 15:25:31,732 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label38.c [2025-03-16 15:25:31,755 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c957036e/264dd2fd79ed4a61a32082debc87e321/FLAG6ed08f558 [2025-03-16 15:25:31,960 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c957036e/264dd2fd79ed4a61a32082debc87e321 [2025-03-16 15:25:31,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 15:25:31,962 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 15:25:31,963 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 15:25:31,963 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 15:25:31,966 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 15:25:31,966 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:25:31" (1/1) ... [2025-03-16 15:25:31,967 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@364ead45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:25:31, skipping insertion in model container [2025-03-16 15:25:31,967 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:25:31" (1/1) ... [2025-03-16 15:25:32,029 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 15:25:32,191 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label38.c[2385,2398] [2025-03-16 15:25:32,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:25:32,582 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 15:25:32,594 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label38.c[2385,2398] [2025-03-16 15:25:32,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:25:32,810 INFO L204 MainTranslator]: Completed translation [2025-03-16 15:25:32,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:25:32 WrapperNode [2025-03-16 15:25:32,812 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 15:25:32,813 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 15:25:32,813 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 15:25:32,813 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 15:25:32,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:25:32" (1/1) ... [2025-03-16 15:25:32,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:25:32" (1/1) ... [2025-03-16 15:25:32,978 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4132 [2025-03-16 15:25:32,979 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 15:25:32,980 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 15:25:32,980 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 15:25:32,980 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 15:25:32,986 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:25:32" (1/1) ... [2025-03-16 15:25:32,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:25:32" (1/1) ... [2025-03-16 15:25:33,013 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:25:32" (1/1) ... [2025-03-16 15:25:33,115 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]. [2025-03-16 15:25:33,115 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:25:32" (1/1) ... [2025-03-16 15:25:33,115 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:25:32" (1/1) ... [2025-03-16 15:25:33,167 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:25:32" (1/1) ... [2025-03-16 15:25:33,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:25:32" (1/1) ... [2025-03-16 15:25:33,186 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:25:32" (1/1) ... [2025-03-16 15:25:33,194 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:25:32" (1/1) ... [2025-03-16 15:25:33,214 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 15:25:33,216 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 15:25:33,216 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 15:25:33,216 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 15:25:33,217 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:25:32" (1/1) ... [2025-03-16 15:25:33,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:25:33,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:25:33,242 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) [2025-03-16 15:25:33,250 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 [2025-03-16 15:25:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 15:25:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 15:25:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 15:25:33,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 15:25:33,315 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 15:25:33,317 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 15:25:35,909 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1647: havoc calculate_output_#t~ret8#1; [2025-03-16 15:25:35,909 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3060: havoc calculate_output2_#t~ret9#1; [2025-03-16 15:25:35,999 INFO L? ?]: Removed 639 outVars from TransFormulas that were not future-live. [2025-03-16 15:25:35,999 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 15:25:36,024 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 15:25:36,025 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 15:25:36,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:25:36 BoogieIcfgContainer [2025-03-16 15:25:36,028 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 15:25:36,030 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 15:25:36,030 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 15:25:36,035 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 15:25:36,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 03:25:31" (1/3) ... [2025-03-16 15:25:36,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b0dbbdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:25:36, skipping insertion in model container [2025-03-16 15:25:36,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:25:32" (2/3) ... [2025-03-16 15:25:36,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b0dbbdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:25:36, skipping insertion in model container [2025-03-16 15:25:36,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:25:36" (3/3) ... [2025-03-16 15:25:36,037 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem18_label38.c [2025-03-16 15:25:36,047 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 15:25:36,048 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem18_label38.c that has 1 procedures, 696 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 15:25:36,107 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 15:25:36,116 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;@2bbdc8cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 15:25:36,116 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 15:25:36,122 INFO L276 IsEmpty]: Start isEmpty. Operand has 696 states, 694 states have (on average 1.9913544668587897) internal successors, (1382), 695 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:36,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-16 15:25:36,127 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:25:36,127 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:25:36,128 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:25:36,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:25:36,132 INFO L85 PathProgramCache]: Analyzing trace with hash 518215475, now seen corresponding path program 1 times [2025-03-16 15:25:36,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:25:36,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60451056] [2025-03-16 15:25:36,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:25:36,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:25:36,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-16 15:25:36,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-16 15:25:36,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:25:36,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:25:36,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:25:36,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:25:36,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60451056] [2025-03-16 15:25:36,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60451056] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:25:36,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:25:36,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:25:36,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159736528] [2025-03-16 15:25:36,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:25:36,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 15:25:36,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:25:36,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 15:25:36,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 15:25:36,257 INFO L87 Difference]: Start difference. First operand has 696 states, 694 states have (on average 1.9913544668587897) internal successors, (1382), 695 states have internal predecessors, (1382), 0 states have call successors, (0), 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 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:36,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:25:36,325 INFO L93 Difference]: Finished difference Result 1391 states and 2763 transitions. [2025-03-16 15:25:36,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 15:25:36,327 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2025-03-16 15:25:36,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:25:36,338 INFO L225 Difference]: With dead ends: 1391 [2025-03-16 15:25:36,339 INFO L226 Difference]: Without dead ends: 693 [2025-03-16 15:25:36,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 15:25:36,344 INFO L435 NwaCegarLoop]: 1320 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 15:25:36,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 15:25:36,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2025-03-16 15:25:36,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2025-03-16 15:25:36,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 1.903179190751445) internal successors, (1317), 692 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:36,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1317 transitions. [2025-03-16 15:25:36,402 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1317 transitions. Word has length 19 [2025-03-16 15:25:36,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:25:36,403 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 1317 transitions. [2025-03-16 15:25:36,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:36,403 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1317 transitions. [2025-03-16 15:25:36,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-16 15:25:36,403 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:25:36,404 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:25:36,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 15:25:36,404 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:25:36,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:25:36,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1501282705, now seen corresponding path program 1 times [2025-03-16 15:25:36,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:25:36,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047825082] [2025-03-16 15:25:36,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:25:36,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:25:36,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-16 15:25:36,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-16 15:25:36,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:25:36,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:25:36,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:25:36,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:25:36,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047825082] [2025-03-16 15:25:36,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047825082] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:25:36,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:25:36,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:25:36,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92526795] [2025-03-16 15:25:36,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:25:36,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:25:36,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:25:36,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:25:36,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:25:36,530 INFO L87 Difference]: Start difference. First operand 693 states and 1317 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:38,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:25:38,961 INFO L93 Difference]: Finished difference Result 2075 states and 3948 transitions. [2025-03-16 15:25:38,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:25:38,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2025-03-16 15:25:38,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:25:38,967 INFO L225 Difference]: With dead ends: 2075 [2025-03-16 15:25:38,967 INFO L226 Difference]: Without dead ends: 1383 [2025-03-16 15:25:38,967 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 [2025-03-16 15:25:38,968 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 700 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 907 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 2865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 907 IncrementalHoareTripleChecker+Valid, 1958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-16 15:25:38,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 249 Invalid, 2865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [907 Valid, 1958 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-16 15:25:38,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2025-03-16 15:25:39,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1383. [2025-03-16 15:25:39,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1382 states have (on average 1.7344428364688858) internal successors, (2397), 1382 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:39,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 2397 transitions. [2025-03-16 15:25:39,014 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 2397 transitions. Word has length 19 [2025-03-16 15:25:39,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:25:39,014 INFO L471 AbstractCegarLoop]: Abstraction has 1383 states and 2397 transitions. [2025-03-16 15:25:39,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:39,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 2397 transitions. [2025-03-16 15:25:39,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-16 15:25:39,016 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:25:39,016 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 15:25:39,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 15:25:39,016 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:25:39,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:25:39,016 INFO L85 PathProgramCache]: Analyzing trace with hash 316730682, now seen corresponding path program 1 times [2025-03-16 15:25:39,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:25:39,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061794682] [2025-03-16 15:25:39,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:25:39,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:25:39,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-16 15:25:39,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-16 15:25:39,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:25:39,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:25:39,200 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:25:39,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:25:39,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061794682] [2025-03-16 15:25:39,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061794682] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:25:39,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:25:39,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:25:39,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693905342] [2025-03-16 15:25:39,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:25:39,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:25:39,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:25:39,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:25:39,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:25:39,202 INFO L87 Difference]: Start difference. First operand 1383 states and 2397 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:41,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:25:41,229 INFO L93 Difference]: Finished difference Result 4145 states and 7188 transitions. [2025-03-16 15:25:41,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:25:41,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2025-03-16 15:25:41,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:25:41,239 INFO L225 Difference]: With dead ends: 4145 [2025-03-16 15:25:41,243 INFO L226 Difference]: Without dead ends: 2763 [2025-03-16 15:25:41,246 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 [2025-03-16 15:25:41,248 INFO L435 NwaCegarLoop]: 567 mSDtfsCounter, 676 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 2628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-16 15:25:41,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 572 Invalid, 2628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1710 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-16 15:25:41,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2025-03-16 15:25:41,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2763. [2025-03-16 15:25:41,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.4308472121650977) internal successors, (3952), 2762 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:41,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3952 transitions. [2025-03-16 15:25:41,292 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3952 transitions. Word has length 88 [2025-03-16 15:25:41,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:25:41,293 INFO L471 AbstractCegarLoop]: Abstraction has 2763 states and 3952 transitions. [2025-03-16 15:25:41,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:41,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3952 transitions. [2025-03-16 15:25:41,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-03-16 15:25:41,294 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:25:41,294 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 15:25:41,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 15:25:41,294 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:25:41,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:25:41,295 INFO L85 PathProgramCache]: Analyzing trace with hash 489840146, now seen corresponding path program 1 times [2025-03-16 15:25:41,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:25:41,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75598667] [2025-03-16 15:25:41,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:25:41,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:25:41,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-16 15:25:41,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-16 15:25:41,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:25:41,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:25:41,421 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:25:41,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:25:41,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75598667] [2025-03-16 15:25:41,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75598667] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:25:41,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:25:41,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:25:41,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750230860] [2025-03-16 15:25:41,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:25:41,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:25:41,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:25:41,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:25:41,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:25:41,424 INFO L87 Difference]: Start difference. First operand 2763 states and 3952 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:43,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:25:43,185 INFO L93 Difference]: Finished difference Result 8285 states and 11853 transitions. [2025-03-16 15:25:43,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:25:43,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2025-03-16 15:25:43,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:25:43,200 INFO L225 Difference]: With dead ends: 8285 [2025-03-16 15:25:43,201 INFO L226 Difference]: Without dead ends: 5523 [2025-03-16 15:25:43,204 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 [2025-03-16 15:25:43,205 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 689 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1993 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 2666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 1993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-16 15:25:43,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 434 Invalid, 2666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 1993 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-16 15:25:43,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5523 states. [2025-03-16 15:25:43,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5523 to 5523. [2025-03-16 15:25:43,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5523 states, 5522 states have (on average 1.2817819630568634) internal successors, (7078), 5522 states have internal predecessors, (7078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:43,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5523 states to 5523 states and 7078 transitions. [2025-03-16 15:25:43,309 INFO L78 Accepts]: Start accepts. Automaton has 5523 states and 7078 transitions. Word has length 104 [2025-03-16 15:25:43,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:25:43,310 INFO L471 AbstractCegarLoop]: Abstraction has 5523 states and 7078 transitions. [2025-03-16 15:25:43,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:43,310 INFO L276 IsEmpty]: Start isEmpty. Operand 5523 states and 7078 transitions. [2025-03-16 15:25:43,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2025-03-16 15:25:43,312 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:25:43,312 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:25:43,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 15:25:43,312 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:25:43,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:25:43,312 INFO L85 PathProgramCache]: Analyzing trace with hash 165398442, now seen corresponding path program 1 times [2025-03-16 15:25:43,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:25:43,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609722235] [2025-03-16 15:25:43,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:25:43,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:25:43,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 206 statements into 1 equivalence classes. [2025-03-16 15:25:43,349 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 206 of 206 statements. [2025-03-16 15:25:43,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:25:43,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:25:43,758 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-16 15:25:43,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:25:43,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609722235] [2025-03-16 15:25:43,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609722235] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:25:43,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:25:43,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:25:43,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585734263] [2025-03-16 15:25:43,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:25:43,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 15:25:43,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:25:43,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 15:25:43,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 15:25:43,762 INFO L87 Difference]: Start difference. First operand 5523 states and 7078 transitions. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:46,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:25:46,238 INFO L93 Difference]: Finished difference Result 15185 states and 18703 transitions. [2025-03-16 15:25:46,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 15:25:46,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 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 206 [2025-03-16 15:25:46,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:25:46,258 INFO L225 Difference]: With dead ends: 15185 [2025-03-16 15:25:46,259 INFO L226 Difference]: Without dead ends: 9663 [2025-03-16 15:25:46,262 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 [2025-03-16 15:25:46,264 INFO L435 NwaCegarLoop]: 629 mSDtfsCounter, 1872 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4378 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 4483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 4378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-16 15:25:46,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 646 Invalid, 4483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 4378 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-16 15:25:46,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9663 states. [2025-03-16 15:25:46,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9663 to 8283. [2025-03-16 15:25:46,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8283 states, 8282 states have (on average 1.215406906544313) internal successors, (10066), 8282 states have internal predecessors, (10066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8283 states to 8283 states and 10066 transitions. [2025-03-16 15:25:46,372 INFO L78 Accepts]: Start accepts. Automaton has 8283 states and 10066 transitions. Word has length 206 [2025-03-16 15:25:46,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:25:46,374 INFO L471 AbstractCegarLoop]: Abstraction has 8283 states and 10066 transitions. [2025-03-16 15:25:46,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:46,375 INFO L276 IsEmpty]: Start isEmpty. Operand 8283 states and 10066 transitions. [2025-03-16 15:25:46,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2025-03-16 15:25:46,380 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:25:46,380 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:25:46,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 15:25:46,380 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:25:46,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:25:46,381 INFO L85 PathProgramCache]: Analyzing trace with hash -971957574, now seen corresponding path program 1 times [2025-03-16 15:25:46,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:25:46,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938692090] [2025-03-16 15:25:46,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:25:46,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:25:46,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 388 statements into 1 equivalence classes. [2025-03-16 15:25:46,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 388 of 388 statements. [2025-03-16 15:25:46,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:25:46,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:25:46,738 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-16 15:25:46,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:25:46,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938692090] [2025-03-16 15:25:46,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938692090] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:25:46,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:25:46,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:25:46,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588314298] [2025-03-16 15:25:46,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:25:46,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 15:25:46,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:25:46,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 15:25:46,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 15:25:46,741 INFO L87 Difference]: Start difference. First operand 8283 states and 10066 transitions. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:48,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:25:48,589 INFO L93 Difference]: Finished difference Result 18688 states and 22308 transitions. [2025-03-16 15:25:48,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 15:25:48,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 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 388 [2025-03-16 15:25:48,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:25:48,612 INFO L225 Difference]: With dead ends: 18688 [2025-03-16 15:25:48,612 INFO L226 Difference]: Without dead ends: 10353 [2025-03-16 15:25:48,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 15:25:48,617 INFO L435 NwaCegarLoop]: 623 mSDtfsCounter, 513 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 3037 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 3239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 3037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-16 15:25:48,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 635 Invalid, 3239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 3037 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-16 15:25:48,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10353 states. [2025-03-16 15:25:48,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10353 to 10353. [2025-03-16 15:25:48,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10353 states, 10352 states have (on average 1.1352395672333848) internal successors, (11752), 10352 states have internal predecessors, (11752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:48,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10353 states to 10353 states and 11752 transitions. [2025-03-16 15:25:48,749 INFO L78 Accepts]: Start accepts. Automaton has 10353 states and 11752 transitions. Word has length 388 [2025-03-16 15:25:48,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:25:48,749 INFO L471 AbstractCegarLoop]: Abstraction has 10353 states and 11752 transitions. [2025-03-16 15:25:48,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:48,749 INFO L276 IsEmpty]: Start isEmpty. Operand 10353 states and 11752 transitions. [2025-03-16 15:25:48,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 834 [2025-03-16 15:25:48,760 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:25:48,760 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-03-16 15:25:48,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 15:25:48,760 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:25:48,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:25:48,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1405136521, now seen corresponding path program 1 times [2025-03-16 15:25:48,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:25:48,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440037569] [2025-03-16 15:25:48,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:25:48,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:25:48,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 833 statements into 1 equivalence classes. [2025-03-16 15:25:48,885 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 833 of 833 statements. [2025-03-16 15:25:48,886 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:25:48,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:25:49,243 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2025-03-16 15:25:49,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:25:49,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440037569] [2025-03-16 15:25:49,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440037569] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:25:49,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:25:49,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:25:49,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058441597] [2025-03-16 15:25:49,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:25:49,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:25:49,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:25:49,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:25:49,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:25:49,245 INFO L87 Difference]: Start difference. First operand 10353 states and 11752 transitions. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:50,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:25:50,887 INFO L93 Difference]: Finished difference Result 24845 states and 28498 transitions. [2025-03-16 15:25:50,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:25:50,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 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 833 [2025-03-16 15:25:50,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:25:50,913 INFO L225 Difference]: With dead ends: 24845 [2025-03-16 15:25:50,914 INFO L226 Difference]: Without dead ends: 14493 [2025-03-16 15:25:50,924 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 [2025-03-16 15:25:50,924 INFO L435 NwaCegarLoop]: 312 mSDtfsCounter, 681 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 2440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-16 15:25:50,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 318 Invalid, 2440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-16 15:25:50,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14493 states. [2025-03-16 15:25:51,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14493 to 13803. [2025-03-16 15:25:51,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13803 states, 13802 states have (on average 1.1514273293725548) internal successors, (15892), 13802 states have internal predecessors, (15892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:51,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13803 states to 13803 states and 15892 transitions. [2025-03-16 15:25:51,101 INFO L78 Accepts]: Start accepts. Automaton has 13803 states and 15892 transitions. Word has length 833 [2025-03-16 15:25:51,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:25:51,102 INFO L471 AbstractCegarLoop]: Abstraction has 13803 states and 15892 transitions. [2025-03-16 15:25:51,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:51,102 INFO L276 IsEmpty]: Start isEmpty. Operand 13803 states and 15892 transitions. [2025-03-16 15:25:51,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 919 [2025-03-16 15:25:51,117 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:25:51,117 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:25:51,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 15:25:51,117 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:25:51,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:25:51,118 INFO L85 PathProgramCache]: Analyzing trace with hash 856783898, now seen corresponding path program 1 times [2025-03-16 15:25:51,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:25:51,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763301848] [2025-03-16 15:25:51,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:25:51,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:25:51,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 918 statements into 1 equivalence classes. [2025-03-16 15:25:51,202 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 918 of 918 statements. [2025-03-16 15:25:51,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:25:51,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:25:51,741 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2025-03-16 15:25:51,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:25:51,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763301848] [2025-03-16 15:25:51,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763301848] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:25:51,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:25:51,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:25:51,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331235124] [2025-03-16 15:25:51,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:25:51,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:25:51,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:25:51,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:25:51,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:25:51,744 INFO L87 Difference]: Start difference. First operand 13803 states and 15892 transitions. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 2 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:53,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:25:53,362 INFO L93 Difference]: Finished difference Result 34505 states and 40336 transitions. [2025-03-16 15:25:53,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:25:53,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 2 states have internal predecessors, (537), 0 states have call successors, (0), 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 918 [2025-03-16 15:25:53,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:25:53,389 INFO L225 Difference]: With dead ends: 34505 [2025-03-16 15:25:53,389 INFO L226 Difference]: Without dead ends: 20703 [2025-03-16 15:25:53,396 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 [2025-03-16 15:25:53,397 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 247 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1794 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 2552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 1794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-16 15:25:53,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 81 Invalid, 2552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 1794 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-16 15:25:53,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20703 states. [2025-03-16 15:25:53,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20703 to 20703. [2025-03-16 15:25:53,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20703 states, 20702 states have (on average 1.167761568930538) internal successors, (24175), 20702 states have internal predecessors, (24175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:53,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20703 states to 20703 states and 24175 transitions. [2025-03-16 15:25:53,587 INFO L78 Accepts]: Start accepts. Automaton has 20703 states and 24175 transitions. Word has length 918 [2025-03-16 15:25:53,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:25:53,589 INFO L471 AbstractCegarLoop]: Abstraction has 20703 states and 24175 transitions. [2025-03-16 15:25:53,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 2 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:53,590 INFO L276 IsEmpty]: Start isEmpty. Operand 20703 states and 24175 transitions. [2025-03-16 15:25:53,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2025-03-16 15:25:53,595 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:25:53,595 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:25:53,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 15:25:53,595 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:25:53,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:25:53,596 INFO L85 PathProgramCache]: Analyzing trace with hash 281765993, now seen corresponding path program 1 times [2025-03-16 15:25:53,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:25:53,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753882392] [2025-03-16 15:25:53,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:25:53,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:25:53,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 919 statements into 1 equivalence classes. [2025-03-16 15:25:53,676 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 919 of 919 statements. [2025-03-16 15:25:53,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:25:53,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:25:54,083 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2025-03-16 15:25:54,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:25:54,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753882392] [2025-03-16 15:25:54,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753882392] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:25:54,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:25:54,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:25:54,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131829809] [2025-03-16 15:25:54,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:25:54,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:25:54,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:25:54,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:25:54,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:25:54,086 INFO L87 Difference]: Start difference. First operand 20703 states and 24175 transitions. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:55,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:25:55,659 INFO L93 Difference]: Finished difference Result 40715 states and 47655 transitions. [2025-03-16 15:25:55,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:25:55,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 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 919 [2025-03-16 15:25:55,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:25:55,688 INFO L225 Difference]: With dead ends: 40715 [2025-03-16 15:25:55,688 INFO L226 Difference]: Without dead ends: 20013 [2025-03-16 15:25:55,703 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 [2025-03-16 15:25:55,703 INFO L435 NwaCegarLoop]: 1083 mSDtfsCounter, 676 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1882 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 2282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 1882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-16 15:25:55,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 1089 Invalid, 2282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 1882 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-16 15:25:55,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20013 states. [2025-03-16 15:25:55,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20013 to 20013. [2025-03-16 15:25:55,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20013 states, 20012 states have (on average 1.10893463921647) internal successors, (22192), 20012 states have internal predecessors, (22192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:55,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20013 states to 20013 states and 22192 transitions. [2025-03-16 15:25:55,863 INFO L78 Accepts]: Start accepts. Automaton has 20013 states and 22192 transitions. Word has length 919 [2025-03-16 15:25:55,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:25:55,864 INFO L471 AbstractCegarLoop]: Abstraction has 20013 states and 22192 transitions. [2025-03-16 15:25:55,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:55,865 INFO L276 IsEmpty]: Start isEmpty. Operand 20013 states and 22192 transitions. [2025-03-16 15:25:55,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2025-03-16 15:25:55,870 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:25:55,870 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:25:55,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 15:25:55,871 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:25:55,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:25:55,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1705173773, now seen corresponding path program 1 times [2025-03-16 15:25:55,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:25:55,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467340431] [2025-03-16 15:25:55,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:25:55,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:25:55,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 972 statements into 1 equivalence classes. [2025-03-16 15:25:55,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 972 of 972 statements. [2025-03-16 15:25:56,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:25:56,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:25:56,651 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 619 trivial. 0 not checked. [2025-03-16 15:25:56,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:25:56,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467340431] [2025-03-16 15:25:56,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467340431] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:25:56,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179251977] [2025-03-16 15:25:56,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:25:56,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:25:56,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:25:56,654 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) [2025-03-16 15:25:56,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 15:25:56,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 972 statements into 1 equivalence classes. [2025-03-16 15:25:56,853 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 972 of 972 statements. [2025-03-16 15:25:56,853 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:25:56,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:25:56,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 15:25:56,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:25:57,687 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 628 trivial. 0 not checked. [2025-03-16 15:25:57,688 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 15:25:57,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179251977] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:25:57,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 15:25:57,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2025-03-16 15:25:57,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438169625] [2025-03-16 15:25:57,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:25:57,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:25:57,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:25:57,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:25:57,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 15:25:57,690 INFO L87 Difference]: Start difference. First operand 20013 states and 22192 transitions. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 2 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:59,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:25:59,415 INFO L93 Difference]: Finished difference Result 50375 states and 56467 transitions. [2025-03-16 15:25:59,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:25:59,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 2 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 972 [2025-03-16 15:25:59,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:25:59,442 INFO L225 Difference]: With dead ends: 50375 [2025-03-16 15:25:59,442 INFO L226 Difference]: Without dead ends: 30363 [2025-03-16 15:25:59,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 971 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 15:25:59,451 INFO L435 NwaCegarLoop]: 355 mSDtfsCounter, 183 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1979 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 1979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-16 15:25:59,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 361 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 1979 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-16 15:25:59,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30363 states. [2025-03-16 15:25:59,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30363 to 26223. [2025-03-16 15:25:59,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26223 states, 26222 states have (on average 1.104416139119823) internal successors, (28960), 26222 states have internal predecessors, (28960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:59,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26223 states to 26223 states and 28960 transitions. [2025-03-16 15:25:59,667 INFO L78 Accepts]: Start accepts. Automaton has 26223 states and 28960 transitions. Word has length 972 [2025-03-16 15:25:59,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:25:59,668 INFO L471 AbstractCegarLoop]: Abstraction has 26223 states and 28960 transitions. [2025-03-16 15:25:59,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 2 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:25:59,668 INFO L276 IsEmpty]: Start isEmpty. Operand 26223 states and 28960 transitions. [2025-03-16 15:25:59,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1005 [2025-03-16 15:25:59,674 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:25:59,675 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:25:59,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 15:25:59,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-16 15:25:59,876 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:25:59,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:25:59,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1501123014, now seen corresponding path program 1 times [2025-03-16 15:25:59,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:25:59,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878524303] [2025-03-16 15:25:59,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:25:59,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:25:59,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1004 statements into 1 equivalence classes. [2025-03-16 15:25:59,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1004 of 1004 statements. [2025-03-16 15:25:59,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:25:59,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:26:00,906 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2025-03-16 15:26:00,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:26:00,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878524303] [2025-03-16 15:26:00,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878524303] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:26:00,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:26:00,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:26:00,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781927507] [2025-03-16 15:26:00,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:26:00,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:26:00,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:26:00,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:26:00,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:26:00,909 INFO L87 Difference]: Start difference. First operand 26223 states and 28960 transitions. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:02,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:26:02,255 INFO L93 Difference]: Finished difference Result 52445 states and 57919 transitions. [2025-03-16 15:26:02,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:26:02,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 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 1004 [2025-03-16 15:26:02,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:26:02,279 INFO L225 Difference]: With dead ends: 52445 [2025-03-16 15:26:02,279 INFO L226 Difference]: Without dead ends: 26223 [2025-03-16 15:26:02,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:26:02,299 INFO L435 NwaCegarLoop]: 772 mSDtfsCounter, 777 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1974 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 2165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-16 15:26:02,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 778 Invalid, 2165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1974 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-16 15:26:02,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26223 states. [2025-03-16 15:26:02,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26223 to 25533. [2025-03-16 15:26:02,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25533 states, 25532 states have (on average 1.0884380385398715) internal successors, (27790), 25532 states have internal predecessors, (27790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:02,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25533 states to 25533 states and 27790 transitions. [2025-03-16 15:26:02,512 INFO L78 Accepts]: Start accepts. Automaton has 25533 states and 27790 transitions. Word has length 1004 [2025-03-16 15:26:02,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:26:02,513 INFO L471 AbstractCegarLoop]: Abstraction has 25533 states and 27790 transitions. [2025-03-16 15:26:02,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:02,513 INFO L276 IsEmpty]: Start isEmpty. Operand 25533 states and 27790 transitions. [2025-03-16 15:26:02,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1036 [2025-03-16 15:26:02,519 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:26:02,520 INFO L218 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:26:02,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 15:26:02,520 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:26:02,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:26:02,521 INFO L85 PathProgramCache]: Analyzing trace with hash 579255358, now seen corresponding path program 1 times [2025-03-16 15:26:02,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:26:02,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603036971] [2025-03-16 15:26:02,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:26:02,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:26:02,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1035 statements into 1 equivalence classes. [2025-03-16 15:26:02,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1035 of 1035 statements. [2025-03-16 15:26:02,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:26:02,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:26:03,233 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 540 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2025-03-16 15:26:03,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:26:03,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603036971] [2025-03-16 15:26:03,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603036971] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:26:03,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:26:03,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:26:03,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975553491] [2025-03-16 15:26:03,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:26:03,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:26:03,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:26:03,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:26:03,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:26:03,236 INFO L87 Difference]: Start difference. First operand 25533 states and 27790 transitions. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 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) [2025-03-16 15:26:04,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:26:04,614 INFO L93 Difference]: Finished difference Result 52445 states and 56982 transitions. [2025-03-16 15:26:04,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:26:04,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 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) Word has length 1035 [2025-03-16 15:26:04,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:26:04,640 INFO L225 Difference]: With dead ends: 52445 [2025-03-16 15:26:04,640 INFO L226 Difference]: Without dead ends: 26913 [2025-03-16 15:26:04,656 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 [2025-03-16 15:26:04,657 INFO L435 NwaCegarLoop]: 973 mSDtfsCounter, 575 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1955 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 1955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-16 15:26:04,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 979 Invalid, 2218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 1955 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-16 15:26:04,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26913 states. [2025-03-16 15:26:04,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26913 to 26913. [2025-03-16 15:26:04,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26913 states, 26912 states have (on average 1.0698944708680143) internal successors, (28793), 26912 states have internal predecessors, (28793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:04,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26913 states to 26913 states and 28793 transitions. [2025-03-16 15:26:04,844 INFO L78 Accepts]: Start accepts. Automaton has 26913 states and 28793 transitions. Word has length 1035 [2025-03-16 15:26:04,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:26:04,844 INFO L471 AbstractCegarLoop]: Abstraction has 26913 states and 28793 transitions. [2025-03-16 15:26:04,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 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) [2025-03-16 15:26:04,844 INFO L276 IsEmpty]: Start isEmpty. Operand 26913 states and 28793 transitions. [2025-03-16 15:26:04,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1089 [2025-03-16 15:26:04,852 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:26:04,852 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:26:04,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 15:26:04,852 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:26:04,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:26:04,853 INFO L85 PathProgramCache]: Analyzing trace with hash -284089377, now seen corresponding path program 1 times [2025-03-16 15:26:04,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:26:04,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129889666] [2025-03-16 15:26:04,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:26:04,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:26:04,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1088 statements into 1 equivalence classes. [2025-03-16 15:26:04,930 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1088 of 1088 statements. [2025-03-16 15:26:04,931 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:26:04,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:26:05,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2025-03-16 15:26:05,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:26:05,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129889666] [2025-03-16 15:26:05,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129889666] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:26:05,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:26:05,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:26:05,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680240936] [2025-03-16 15:26:05,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:26:05,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:26:05,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:26:05,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:26:05,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:26:05,298 INFO L87 Difference]: Start difference. First operand 26913 states and 28793 transitions. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:06,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:26:06,757 INFO L93 Difference]: Finished difference Result 60725 states and 65776 transitions. [2025-03-16 15:26:06,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:26:06,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 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 1088 [2025-03-16 15:26:06,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:26:06,793 INFO L225 Difference]: With dead ends: 60725 [2025-03-16 15:26:06,793 INFO L226 Difference]: Without dead ends: 33813 [2025-03-16 15:26:06,811 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 [2025-03-16 15:26:06,812 INFO L435 NwaCegarLoop]: 924 mSDtfsCounter, 645 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 2190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-16 15:26:06,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 930 Invalid, 2190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-16 15:26:06,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33813 states. [2025-03-16 15:26:07,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33813 to 33813. [2025-03-16 15:26:07,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33813 states, 33812 states have (on average 1.07609724358216) internal successors, (36385), 33812 states have internal predecessors, (36385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:07,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33813 states to 33813 states and 36385 transitions. [2025-03-16 15:26:07,164 INFO L78 Accepts]: Start accepts. Automaton has 33813 states and 36385 transitions. Word has length 1088 [2025-03-16 15:26:07,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:26:07,165 INFO L471 AbstractCegarLoop]: Abstraction has 33813 states and 36385 transitions. [2025-03-16 15:26:07,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:07,165 INFO L276 IsEmpty]: Start isEmpty. Operand 33813 states and 36385 transitions. [2025-03-16 15:26:07,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1095 [2025-03-16 15:26:07,180 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:26:07,180 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:26:07,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 15:26:07,180 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:26:07,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:26:07,181 INFO L85 PathProgramCache]: Analyzing trace with hash -943338416, now seen corresponding path program 1 times [2025-03-16 15:26:07,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:26:07,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576547179] [2025-03-16 15:26:07,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:26:07,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:26:07,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1094 statements into 1 equivalence classes. [2025-03-16 15:26:07,303 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1094 of 1094 statements. [2025-03-16 15:26:07,303 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:26:07,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:26:07,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2025-03-16 15:26:07,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:26:07,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576547179] [2025-03-16 15:26:07,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576547179] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:26:07,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:26:07,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:26:07,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824135884] [2025-03-16 15:26:07,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:26:07,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:26:07,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:26:07,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:26:07,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:26:07,723 INFO L87 Difference]: Start difference. First operand 33813 states and 36385 transitions. Second operand has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:09,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:26:09,256 INFO L93 Difference]: Finished difference Result 77285 states and 83995 transitions. [2025-03-16 15:26:09,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:26:09,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 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 1094 [2025-03-16 15:26:09,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:26:09,287 INFO L225 Difference]: With dead ends: 77285 [2025-03-16 15:26:09,287 INFO L226 Difference]: Without dead ends: 41403 [2025-03-16 15:26:09,296 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 [2025-03-16 15:26:09,297 INFO L435 NwaCegarLoop]: 1113 mSDtfsCounter, 604 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1886 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 2248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 1886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-16 15:26:09,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 1118 Invalid, 2248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 1886 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-16 15:26:09,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41403 states. [2025-03-16 15:26:09,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41403 to 41403. [2025-03-16 15:26:09,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41403 states, 41402 states have (on average 1.069489396647505) internal successors, (44279), 41402 states have internal predecessors, (44279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:09,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41403 states to 41403 states and 44279 transitions. [2025-03-16 15:26:09,572 INFO L78 Accepts]: Start accepts. Automaton has 41403 states and 44279 transitions. Word has length 1094 [2025-03-16 15:26:09,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:26:09,573 INFO L471 AbstractCegarLoop]: Abstraction has 41403 states and 44279 transitions. [2025-03-16 15:26:09,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:09,573 INFO L276 IsEmpty]: Start isEmpty. Operand 41403 states and 44279 transitions. [2025-03-16 15:26:09,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1113 [2025-03-16 15:26:09,580 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:26:09,581 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:26:09,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 15:26:09,581 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:26:09,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:26:09,582 INFO L85 PathProgramCache]: Analyzing trace with hash -476957917, now seen corresponding path program 1 times [2025-03-16 15:26:09,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:26:09,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840706930] [2025-03-16 15:26:09,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:26:09,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:26:09,626 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1112 statements into 1 equivalence classes. [2025-03-16 15:26:09,653 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1112 of 1112 statements. [2025-03-16 15:26:09,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:26:09,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:26:09,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1159 backedges. 601 proven. 0 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2025-03-16 15:26:09,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:26:09,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840706930] [2025-03-16 15:26:09,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840706930] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:26:09,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:26:09,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:26:09,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354144421] [2025-03-16 15:26:09,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:26:09,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:26:09,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:26:09,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:26:09,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:26:09,976 INFO L87 Difference]: Start difference. First operand 41403 states and 44279 transitions. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:11,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:26:11,490 INFO L93 Difference]: Finished difference Result 92465 states and 99769 transitions. [2025-03-16 15:26:11,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:26:11,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 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 1112 [2025-03-16 15:26:11,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:26:11,536 INFO L225 Difference]: With dead ends: 92465 [2025-03-16 15:26:11,536 INFO L226 Difference]: Without dead ends: 47613 [2025-03-16 15:26:11,564 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 [2025-03-16 15:26:11,564 INFO L435 NwaCegarLoop]: 1055 mSDtfsCounter, 650 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 2196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-16 15:26:11,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1061 Invalid, 2196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 1681 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-16 15:26:11,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47613 states. [2025-03-16 15:26:11,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47613 to 46233. [2025-03-16 15:26:11,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46233 states, 46232 states have (on average 1.0417676068523967) internal successors, (48163), 46232 states have internal predecessors, (48163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:11,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46233 states to 46233 states and 48163 transitions. [2025-03-16 15:26:11,893 INFO L78 Accepts]: Start accepts. Automaton has 46233 states and 48163 transitions. Word has length 1112 [2025-03-16 15:26:11,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:26:11,893 INFO L471 AbstractCegarLoop]: Abstraction has 46233 states and 48163 transitions. [2025-03-16 15:26:11,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:11,893 INFO L276 IsEmpty]: Start isEmpty. Operand 46233 states and 48163 transitions. [2025-03-16 15:26:11,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1328 [2025-03-16 15:26:11,908 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:26:11,908 INFO L218 NwaCegarLoop]: trace histogram [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, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:26:11,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-16 15:26:11,908 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:26:11,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:26:11,909 INFO L85 PathProgramCache]: Analyzing trace with hash 843284749, now seen corresponding path program 1 times [2025-03-16 15:26:11,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:26:11,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580877917] [2025-03-16 15:26:11,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:26:11,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:26:11,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1327 statements into 1 equivalence classes. [2025-03-16 15:26:11,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1327 of 1327 statements. [2025-03-16 15:26:11,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:26:11,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:26:12,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1897 backedges. 1156 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2025-03-16 15:26:12,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:26:12,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580877917] [2025-03-16 15:26:12,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580877917] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:26:12,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:26:12,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:26:12,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274336207] [2025-03-16 15:26:12,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:26:12,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:26:12,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:26:12,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:26:12,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:26:12,453 INFO L87 Difference]: Start difference. First operand 46233 states and 48163 transitions. Second operand has 3 states, 3 states have (on average 281.3333333333333) internal successors, (844), 3 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:13,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:26:13,824 INFO L93 Difference]: Finished difference Result 102125 states and 106722 transitions. [2025-03-16 15:26:13,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:26:13,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 281.3333333333333) internal successors, (844), 3 states have internal predecessors, (844), 0 states have call successors, (0), 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 1327 [2025-03-16 15:26:13,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:26:13,879 INFO L225 Difference]: With dead ends: 102125 [2025-03-16 15:26:13,879 INFO L226 Difference]: Without dead ends: 56583 [2025-03-16 15:26:13,909 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 [2025-03-16 15:26:13,909 INFO L435 NwaCegarLoop]: 959 mSDtfsCounter, 456 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1773 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-16 15:26:13,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 964 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1773 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-16 15:26:13,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56583 states. [2025-03-16 15:26:14,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56583 to 55893. [2025-03-16 15:26:14,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55893 states, 55892 states have (on average 1.0389680097330567) internal successors, (58070), 55892 states have internal predecessors, (58070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:14,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55893 states to 55893 states and 58070 transitions. [2025-03-16 15:26:14,521 INFO L78 Accepts]: Start accepts. Automaton has 55893 states and 58070 transitions. Word has length 1327 [2025-03-16 15:26:14,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:26:14,522 INFO L471 AbstractCegarLoop]: Abstraction has 55893 states and 58070 transitions. [2025-03-16 15:26:14,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 281.3333333333333) internal successors, (844), 3 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:14,523 INFO L276 IsEmpty]: Start isEmpty. Operand 55893 states and 58070 transitions. [2025-03-16 15:26:14,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1357 [2025-03-16 15:26:14,551 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:26:14,551 INFO L218 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:26:14,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-16 15:26:14,551 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:26:14,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:26:14,552 INFO L85 PathProgramCache]: Analyzing trace with hash -582085453, now seen corresponding path program 1 times [2025-03-16 15:26:14,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:26:14,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147895003] [2025-03-16 15:26:14,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:26:14,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:26:14,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1356 statements into 1 equivalence classes. [2025-03-16 15:26:14,684 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1356 of 1356 statements. [2025-03-16 15:26:14,685 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:26:14,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:26:15,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2061 backedges. 1402 proven. 0 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2025-03-16 15:26:15,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:26:15,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147895003] [2025-03-16 15:26:15,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147895003] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:26:15,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:26:15,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:26:15,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3187157] [2025-03-16 15:26:15,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:26:15,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 15:26:15,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:26:15,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 15:26:15,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 15:26:15,661 INFO L87 Difference]: Start difference. First operand 55893 states and 58070 transitions. Second operand has 4 states, 4 states have (on average 205.25) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:17,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:26:17,452 INFO L93 Difference]: Finished difference Result 117305 states and 122095 transitions. [2025-03-16 15:26:17,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 15:26:17,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 205.25) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 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 1356 [2025-03-16 15:26:17,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:26:17,516 INFO L225 Difference]: With dead ends: 117305 [2025-03-16 15:26:17,516 INFO L226 Difference]: Without dead ends: 62103 [2025-03-16 15:26:17,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 15:26:17,548 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 985 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2681 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 2997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 2681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-16 15:26:17,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 68 Invalid, 2997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 2681 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-16 15:26:17,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62103 states. [2025-03-16 15:26:17,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62103 to 61413. [2025-03-16 15:26:17,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61413 states, 61412 states have (on average 1.0391942942747345) internal successors, (63819), 61412 states have internal predecessors, (63819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:18,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61413 states to 61413 states and 63819 transitions. [2025-03-16 15:26:18,029 INFO L78 Accepts]: Start accepts. Automaton has 61413 states and 63819 transitions. Word has length 1356 [2025-03-16 15:26:18,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:26:18,030 INFO L471 AbstractCegarLoop]: Abstraction has 61413 states and 63819 transitions. [2025-03-16 15:26:18,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 205.25) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:18,030 INFO L276 IsEmpty]: Start isEmpty. Operand 61413 states and 63819 transitions. [2025-03-16 15:26:18,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1436 [2025-03-16 15:26:18,050 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:26:18,051 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:26:18,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-16 15:26:18,051 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:26:18,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:26:18,052 INFO L85 PathProgramCache]: Analyzing trace with hash -477487050, now seen corresponding path program 1 times [2025-03-16 15:26:18,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:26:18,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161783423] [2025-03-16 15:26:18,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:26:18,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:26:18,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1435 statements into 1 equivalence classes. [2025-03-16 15:26:18,217 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1435 of 1435 statements. [2025-03-16 15:26:18,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:26:18,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:26:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2585 backedges. 628 proven. 0 refuted. 0 times theorem prover too weak. 1957 trivial. 0 not checked. [2025-03-16 15:26:21,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:26:21,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161783423] [2025-03-16 15:26:21,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161783423] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:26:21,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:26:21,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:26:21,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788358221] [2025-03-16 15:26:21,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:26:21,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:26:21,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:26:21,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:26:21,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:26:21,150 INFO L87 Difference]: Start difference. First operand 61413 states and 63819 transitions. Second operand has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:22,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:26:22,461 INFO L93 Difference]: Finished difference Result 123515 states and 128347 transitions. [2025-03-16 15:26:22,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:26:22,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 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 1435 [2025-03-16 15:26:22,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:26:22,523 INFO L225 Difference]: With dead ends: 123515 [2025-03-16 15:26:22,523 INFO L226 Difference]: Without dead ends: 62103 [2025-03-16 15:26:22,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:26:22,561 INFO L435 NwaCegarLoop]: 755 mSDtfsCounter, 645 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 1914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-16 15:26:22,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 760 Invalid, 1914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-16 15:26:22,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62103 states. [2025-03-16 15:26:22,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62103 to 61413. [2025-03-16 15:26:22,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61413 states, 61412 states have (on average 1.0356933498339087) internal successors, (63604), 61412 states have internal predecessors, (63604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:23,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61413 states to 61413 states and 63604 transitions. [2025-03-16 15:26:23,211 INFO L78 Accepts]: Start accepts. Automaton has 61413 states and 63604 transitions. Word has length 1435 [2025-03-16 15:26:23,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:26:23,211 INFO L471 AbstractCegarLoop]: Abstraction has 61413 states and 63604 transitions. [2025-03-16 15:26:23,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:23,212 INFO L276 IsEmpty]: Start isEmpty. Operand 61413 states and 63604 transitions. [2025-03-16 15:26:23,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1477 [2025-03-16 15:26:23,233 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:26:23,234 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:26:23,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-16 15:26:23,234 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:26:23,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:26:23,235 INFO L85 PathProgramCache]: Analyzing trace with hash 449145434, now seen corresponding path program 1 times [2025-03-16 15:26:23,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:26:23,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605653378] [2025-03-16 15:26:23,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:26:23,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:26:23,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1476 statements into 1 equivalence classes. [2025-03-16 15:26:23,330 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1476 of 1476 statements. [2025-03-16 15:26:23,330 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:26:23,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:26:23,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2409 backedges. 1377 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2025-03-16 15:26:23,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:26:23,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605653378] [2025-03-16 15:26:23,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605653378] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:26:23,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:26:23,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:26:23,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849827142] [2025-03-16 15:26:23,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:26:23,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:26:23,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:26:23,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:26:23,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:26:23,947 INFO L87 Difference]: Start difference. First operand 61413 states and 63604 transitions. Second operand has 3 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:25,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:26:25,225 INFO L93 Difference]: Finished difference Result 120065 states and 124402 transitions. [2025-03-16 15:26:25,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:26:25,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 0 states have call successors, (0), 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 1476 [2025-03-16 15:26:25,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:26:25,370 INFO L225 Difference]: With dead ends: 120065 [2025-03-16 15:26:25,370 INFO L226 Difference]: Without dead ends: 59343 [2025-03-16 15:26:25,396 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 [2025-03-16 15:26:25,397 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 425 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-16 15:26:25,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 886 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-16 15:26:25,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59343 states. [2025-03-16 15:26:25,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59343 to 57273. [2025-03-16 15:26:25,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57273 states, 57272 states have (on average 1.0255622293616427) internal successors, (58736), 57272 states have internal predecessors, (58736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:25,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57273 states to 57273 states and 58736 transitions. [2025-03-16 15:26:25,831 INFO L78 Accepts]: Start accepts. Automaton has 57273 states and 58736 transitions. Word has length 1476 [2025-03-16 15:26:25,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:26:25,832 INFO L471 AbstractCegarLoop]: Abstraction has 57273 states and 58736 transitions. [2025-03-16 15:26:25,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:25,832 INFO L276 IsEmpty]: Start isEmpty. Operand 57273 states and 58736 transitions. [2025-03-16 15:26:25,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1490 [2025-03-16 15:26:25,850 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:26:25,851 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:26:25,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-16 15:26:25,851 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:26:25,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:26:25,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1254054421, now seen corresponding path program 1 times [2025-03-16 15:26:25,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:26:25,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285063018] [2025-03-16 15:26:25,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:26:25,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:26:25,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1489 statements into 1 equivalence classes. [2025-03-16 15:26:26,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1489 of 1489 statements. [2025-03-16 15:26:26,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:26:26,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:26:26,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3029 backedges. 1540 proven. 0 refuted. 0 times theorem prover too weak. 1489 trivial. 0 not checked. [2025-03-16 15:26:26,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:26:26,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285063018] [2025-03-16 15:26:26,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285063018] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:26:26,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:26:26,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:26:26,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679193609] [2025-03-16 15:26:26,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:26:26,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:26:26,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:26:26,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:26:26,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:26:26,594 INFO L87 Difference]: Start difference. First operand 57273 states and 58736 transitions. Second operand has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:27,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:26:27,963 INFO L93 Difference]: Finished difference Result 115925 states and 118870 transitions. [2025-03-16 15:26:27,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:26:27,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 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 1489 [2025-03-16 15:26:27,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:26:28,020 INFO L225 Difference]: With dead ends: 115925 [2025-03-16 15:26:28,020 INFO L226 Difference]: Without dead ends: 57963 [2025-03-16 15:26:28,049 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 [2025-03-16 15:26:28,049 INFO L435 NwaCegarLoop]: 937 mSDtfsCounter, 625 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-16 15:26:28,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 943 Invalid, 2004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1779 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-16 15:26:28,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57963 states. [2025-03-16 15:26:28,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57963 to 56583. [2025-03-16 15:26:28,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56583 states, 56582 states have (on average 1.0207133010498037) internal successors, (57754), 56582 states have internal predecessors, (57754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:28,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56583 states to 56583 states and 57754 transitions. [2025-03-16 15:26:28,578 INFO L78 Accepts]: Start accepts. Automaton has 56583 states and 57754 transitions. Word has length 1489 [2025-03-16 15:26:28,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:26:28,579 INFO L471 AbstractCegarLoop]: Abstraction has 56583 states and 57754 transitions. [2025-03-16 15:26:28,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:28,579 INFO L276 IsEmpty]: Start isEmpty. Operand 56583 states and 57754 transitions. [2025-03-16 15:26:28,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1560 [2025-03-16 15:26:28,618 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:26:28,618 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:26:28,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-16 15:26:28,618 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:26:28,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:26:28,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1331050748, now seen corresponding path program 1 times [2025-03-16 15:26:28,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:26:28,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780490328] [2025-03-16 15:26:28,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:26:28,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:26:28,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1559 statements into 1 equivalence classes. [2025-03-16 15:26:28,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1559 of 1559 statements. [2025-03-16 15:26:28,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:26:28,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:26:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3417 backedges. 2108 proven. 0 refuted. 0 times theorem prover too weak. 1309 trivial. 0 not checked. [2025-03-16 15:26:29,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:26:29,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780490328] [2025-03-16 15:26:29,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780490328] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:26:29,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:26:29,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:26:29,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207212124] [2025-03-16 15:26:29,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:26:29,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:26:29,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:26:29,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:26:29,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:26:29,552 INFO L87 Difference]: Start difference. First operand 56583 states and 57754 transitions. Second operand has 3 states, 3 states have (on average 281.0) internal successors, (843), 3 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:30,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:26:30,948 INFO L93 Difference]: Finished difference Result 138005 states and 141005 transitions. [2025-03-16 15:26:30,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:26:30,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 281.0) internal successors, (843), 3 states have internal predecessors, (843), 0 states have call successors, (0), 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 1559 [2025-03-16 15:26:30,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:26:31,028 INFO L225 Difference]: With dead ends: 138005 [2025-03-16 15:26:31,028 INFO L226 Difference]: Without dead ends: 82113 [2025-03-16 15:26:31,066 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 [2025-03-16 15:26:31,067 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 543 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1689 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 1689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-16 15:26:31,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 899 Invalid, 1979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 1689 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-16 15:26:31,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82113 states. [2025-03-16 15:26:31,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82113 to 80733. [2025-03-16 15:26:31,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80733 states, 80732 states have (on average 1.0191745528415004) internal successors, (82280), 80732 states have internal predecessors, (82280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:31,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80733 states to 80733 states and 82280 transitions. [2025-03-16 15:26:31,941 INFO L78 Accepts]: Start accepts. Automaton has 80733 states and 82280 transitions. Word has length 1559 [2025-03-16 15:26:31,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:26:31,942 INFO L471 AbstractCegarLoop]: Abstraction has 80733 states and 82280 transitions. [2025-03-16 15:26:31,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 281.0) internal successors, (843), 3 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:31,942 INFO L276 IsEmpty]: Start isEmpty. Operand 80733 states and 82280 transitions. [2025-03-16 15:26:31,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1575 [2025-03-16 15:26:31,971 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:26:31,971 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:26:31,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-16 15:26:31,971 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:26:31,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:26:31,972 INFO L85 PathProgramCache]: Analyzing trace with hash -205763864, now seen corresponding path program 1 times [2025-03-16 15:26:31,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:26:31,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323049222] [2025-03-16 15:26:31,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:26:31,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:26:32,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1574 statements into 1 equivalence classes. [2025-03-16 15:26:32,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1574 of 1574 statements. [2025-03-16 15:26:32,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:26:32,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:26:33,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 886 proven. 0 refuted. 0 times theorem prover too weak. 2117 trivial. 0 not checked. [2025-03-16 15:26:33,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:26:33,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323049222] [2025-03-16 15:26:33,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323049222] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:26:33,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:26:33,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:26:33,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475589029] [2025-03-16 15:26:33,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:26:33,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:26:33,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:26:33,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:26:33,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:26:33,063 INFO L87 Difference]: Start difference. First operand 80733 states and 82280 transitions. Second operand has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:34,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:26:34,548 INFO L93 Difference]: Finished difference Result 169745 states and 173066 transitions. [2025-03-16 15:26:34,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:26:34,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 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 1574 [2025-03-16 15:26:34,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:26:34,651 INFO L225 Difference]: With dead ends: 169745 [2025-03-16 15:26:34,651 INFO L226 Difference]: Without dead ends: 89703 [2025-03-16 15:26:34,700 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 [2025-03-16 15:26:34,701 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 550 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 1874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-16 15:26:34,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 262 Invalid, 1874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-16 15:26:34,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89703 states. [2025-03-16 15:26:35,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89703 to 80733. [2025-03-16 15:26:35,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80733 states, 80732 states have (on average 1.019001139572908) internal successors, (82266), 80732 states have internal predecessors, (82266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:35,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80733 states to 80733 states and 82266 transitions. [2025-03-16 15:26:35,661 INFO L78 Accepts]: Start accepts. Automaton has 80733 states and 82266 transitions. Word has length 1574 [2025-03-16 15:26:35,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:26:35,662 INFO L471 AbstractCegarLoop]: Abstraction has 80733 states and 82266 transitions. [2025-03-16 15:26:35,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:35,662 INFO L276 IsEmpty]: Start isEmpty. Operand 80733 states and 82266 transitions. [2025-03-16 15:26:35,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1604 [2025-03-16 15:26:35,706 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:26:35,707 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:26:35,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-16 15:26:35,707 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:26:35,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:26:35,708 INFO L85 PathProgramCache]: Analyzing trace with hash -142400683, now seen corresponding path program 1 times [2025-03-16 15:26:35,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:26:35,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143714944] [2025-03-16 15:26:35,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:26:35,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:26:35,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1603 statements into 1 equivalence classes. [2025-03-16 15:26:35,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1603 of 1603 statements. [2025-03-16 15:26:35,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:26:35,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:26:36,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2648 backedges. 1794 proven. 0 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2025-03-16 15:26:36,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:26:36,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143714944] [2025-03-16 15:26:36,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143714944] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:26:36,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:26:36,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:26:36,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833464369] [2025-03-16 15:26:36,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:26:36,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:26:36,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:26:36,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:26:36,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:26:36,768 INFO L87 Difference]: Start difference. First operand 80733 states and 82266 transitions. Second operand has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:38,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:26:38,210 INFO L93 Difference]: Finished difference Result 168365 states and 171676 transitions. [2025-03-16 15:26:38,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:26:38,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 0 states have call successors, (0), 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 1603 [2025-03-16 15:26:38,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:26:38,292 INFO L225 Difference]: With dead ends: 168365 [2025-03-16 15:26:38,292 INFO L226 Difference]: Without dead ends: 88323 [2025-03-16 15:26:38,337 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 [2025-03-16 15:26:38,338 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 613 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1727 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 1964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 1727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-16 15:26:38,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 199 Invalid, 1964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 1727 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-16 15:26:38,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88323 states. [2025-03-16 15:26:38,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88323 to 87633. [2025-03-16 15:26:38,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87633 states, 87632 states have (on average 1.017162680299434) internal successors, (89136), 87632 states have internal predecessors, (89136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:39,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87633 states to 87633 states and 89136 transitions. [2025-03-16 15:26:39,073 INFO L78 Accepts]: Start accepts. Automaton has 87633 states and 89136 transitions. Word has length 1603 [2025-03-16 15:26:39,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:26:39,074 INFO L471 AbstractCegarLoop]: Abstraction has 87633 states and 89136 transitions. [2025-03-16 15:26:39,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:39,074 INFO L276 IsEmpty]: Start isEmpty. Operand 87633 states and 89136 transitions. [2025-03-16 15:26:39,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1750 [2025-03-16 15:26:39,115 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:26:39,116 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:26:39,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-16 15:26:39,116 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:26:39,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:26:39,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1378057649, now seen corresponding path program 1 times [2025-03-16 15:26:39,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:26:39,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535397175] [2025-03-16 15:26:39,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:26:39,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:26:39,226 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1749 statements into 1 equivalence classes. [2025-03-16 15:26:39,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1749 of 1749 statements. [2025-03-16 15:26:39,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:26:39,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:26:42,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3468 backedges. 2509 proven. 351 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2025-03-16 15:26:42,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:26:42,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535397175] [2025-03-16 15:26:42,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535397175] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:26:42,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805926389] [2025-03-16 15:26:42,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:26:42,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:26:42,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:26:42,279 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) [2025-03-16 15:26:42,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 15:26:42,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1749 statements into 1 equivalence classes. [2025-03-16 15:26:42,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1749 of 1749 statements. [2025-03-16 15:26:42,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:26:42,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:26:42,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 1989 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 15:26:42,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:26:43,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3468 backedges. 2425 proven. 0 refuted. 0 times theorem prover too weak. 1043 trivial. 0 not checked. [2025-03-16 15:26:43,733 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 15:26:43,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805926389] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:26:43,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 15:26:43,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2025-03-16 15:26:43,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948253896] [2025-03-16 15:26:43,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:26:43,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 15:26:43,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:26:43,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 15:26:43,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-03-16 15:26:43,736 INFO L87 Difference]: Start difference. First operand 87633 states and 89136 transitions. Second operand has 4 states, 4 states have (on average 254.75) internal successors, (1019), 3 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:46,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:26:46,016 INFO L93 Difference]: Finished difference Result 191825 states and 195203 transitions. [2025-03-16 15:26:46,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 15:26:46,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 254.75) internal successors, (1019), 3 states have internal predecessors, (1019), 0 states have call successors, (0), 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 1749 [2025-03-16 15:26:46,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:26:46,126 INFO L225 Difference]: With dead ends: 191825 [2025-03-16 15:26:46,126 INFO L226 Difference]: Without dead ends: 103503 [2025-03-16 15:26:46,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1755 GetRequests, 1747 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-03-16 15:26:46,177 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 992 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2583 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 3010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 2583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-16 15:26:46,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 65 Invalid, 3010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 2583 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-16 15:26:46,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103503 states. [2025-03-16 15:26:47,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103503 to 101433. [2025-03-16 15:26:47,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101433 states, 101432 states have (on average 1.017164208533796) internal successors, (103173), 101432 states have internal predecessors, (103173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:47,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101433 states to 101433 states and 103173 transitions. [2025-03-16 15:26:47,446 INFO L78 Accepts]: Start accepts. Automaton has 101433 states and 103173 transitions. Word has length 1749 [2025-03-16 15:26:47,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:26:47,447 INFO L471 AbstractCegarLoop]: Abstraction has 101433 states and 103173 transitions. [2025-03-16 15:26:47,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 254.75) internal successors, (1019), 3 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:47,447 INFO L276 IsEmpty]: Start isEmpty. Operand 101433 states and 103173 transitions. [2025-03-16 15:26:47,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1795 [2025-03-16 15:26:47,473 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:26:47,474 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:26:47,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-16 15:26:47,674 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,SelfDestructingSolverStorable23 [2025-03-16 15:26:47,675 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:26:47,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:26:47,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1808732969, now seen corresponding path program 1 times [2025-03-16 15:26:47,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:26:47,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868901243] [2025-03-16 15:26:47,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:26:47,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:26:47,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1794 statements into 1 equivalence classes. [2025-03-16 15:26:47,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1794 of 1794 statements. [2025-03-16 15:26:47,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:26:47,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:26:49,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3833 backedges. 2364 proven. 0 refuted. 0 times theorem prover too weak. 1469 trivial. 0 not checked. [2025-03-16 15:26:49,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:26:49,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868901243] [2025-03-16 15:26:49,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868901243] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:26:49,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:26:49,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:26:49,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518935915] [2025-03-16 15:26:49,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:26:49,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:26:49,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:26:49,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:26:49,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:26:49,075 INFO L87 Difference]: Start difference. First operand 101433 states and 103173 transitions. Second operand has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:50,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:26:50,694 INFO L93 Difference]: Finished difference Result 208385 states and 211925 transitions. [2025-03-16 15:26:50,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:26:50,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 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 1794 [2025-03-16 15:26:50,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:26:50,807 INFO L225 Difference]: With dead ends: 208385 [2025-03-16 15:26:50,807 INFO L226 Difference]: Without dead ends: 107643 [2025-03-16 15:26:50,867 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 [2025-03-16 15:26:50,868 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 470 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1767 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-16 15:26:50,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 182 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1767 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-16 15:26:50,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107643 states. [2025-03-16 15:26:51,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107643 to 102813. [2025-03-16 15:26:51,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102813 states, 102812 states have (on average 1.0169532739368945) internal successors, (104555), 102812 states have internal predecessors, (104555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:51,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102813 states to 102813 states and 104555 transitions. [2025-03-16 15:26:51,724 INFO L78 Accepts]: Start accepts. Automaton has 102813 states and 104555 transitions. Word has length 1794 [2025-03-16 15:26:51,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:26:51,725 INFO L471 AbstractCegarLoop]: Abstraction has 102813 states and 104555 transitions. [2025-03-16 15:26:51,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:26:51,725 INFO L276 IsEmpty]: Start isEmpty. Operand 102813 states and 104555 transitions. [2025-03-16 15:26:51,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1853 [2025-03-16 15:26:51,756 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:26:51,756 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:26:51,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-16 15:26:51,756 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:26:51,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:26:51,757 INFO L85 PathProgramCache]: Analyzing trace with hash -593008966, now seen corresponding path program 1 times [2025-03-16 15:26:51,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:26:51,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537676970] [2025-03-16 15:26:51,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:26:51,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:26:51,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1852 statements into 1 equivalence classes. [2025-03-16 15:26:52,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1852 of 1852 statements. [2025-03-16 15:26:52,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:26:52,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat