./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/transmitter.07.cil.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/systemc/transmitter.07.cil.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 022987cd4c8c671e376c5c3e5a08e2f1b98444b4d5d48bc73787bff74aa0de0f --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 19:03:59,868 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 19:03:59,928 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 19:03:59,933 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 19:03:59,936 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 19:03:59,958 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 19:03:59,959 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 19:03:59,960 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 19:03:59,960 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 19:03:59,960 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 19:03:59,961 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 19:03:59,961 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 19:03:59,962 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 19:03:59,962 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 19:03:59,962 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 19:03:59,962 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 19:03:59,962 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 19:03:59,963 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 19:03:59,963 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 19:03:59,963 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 19:03:59,963 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 19:03:59,963 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 19:03:59,963 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 19:03:59,963 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 19:03:59,963 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 19:03:59,963 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 19:03:59,963 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 19:03:59,963 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 19:03:59,963 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 19:03:59,963 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 19:03:59,964 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 19:03:59,964 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 19:03:59,964 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:03:59,964 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 19:03:59,964 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 19:03:59,964 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 19:03:59,965 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 19:03:59,965 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 19:03:59,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 19:03:59,965 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 19:03:59,965 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 19:03:59,965 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 19:03:59,965 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 19:03:59,965 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 -> 022987cd4c8c671e376c5c3e5a08e2f1b98444b4d5d48bc73787bff74aa0de0f [2025-03-16 19:04:00,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 19:04:00,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 19:04:00,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 19:04:00,201 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 19:04:00,201 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 19:04:00,203 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.07.cil.c [2025-03-16 19:04:01,347 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/543a74c64/efaf8fcbd2f346098a32818279fea7b6/FLAG12f3eac22 [2025-03-16 19:04:01,593 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 19:04:01,593 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.07.cil.c [2025-03-16 19:04:01,604 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/543a74c64/efaf8fcbd2f346098a32818279fea7b6/FLAG12f3eac22 [2025-03-16 19:04:01,927 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/543a74c64/efaf8fcbd2f346098a32818279fea7b6 [2025-03-16 19:04:01,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 19:04:01,931 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 19:04:01,931 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 19:04:01,931 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 19:04:01,934 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 19:04:01,935 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:04:01" (1/1) ... [2025-03-16 19:04:01,935 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79da9237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:01, skipping insertion in model container [2025-03-16 19:04:01,936 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:04:01" (1/1) ... [2025-03-16 19:04:01,954 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 19:04:02,064 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/systemc/transmitter.07.cil.c[706,719] [2025-03-16 19:04:02,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:04:02,154 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 19:04:02,162 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/systemc/transmitter.07.cil.c[706,719] [2025-03-16 19:04:02,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:04:02,228 INFO L204 MainTranslator]: Completed translation [2025-03-16 19:04:02,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:02 WrapperNode [2025-03-16 19:04:02,228 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 19:04:02,229 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 19:04:02,229 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 19:04:02,229 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 19:04:02,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:02" (1/1) ... [2025-03-16 19:04:02,240 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:02" (1/1) ... [2025-03-16 19:04:02,260 INFO L138 Inliner]: procedures = 42, calls = 51, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 531 [2025-03-16 19:04:02,260 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 19:04:02,261 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 19:04:02,261 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 19:04:02,261 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 19:04:02,271 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:02" (1/1) ... [2025-03-16 19:04:02,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:02" (1/1) ... [2025-03-16 19:04:02,279 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:02" (1/1) ... [2025-03-16 19:04:02,291 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 19:04:02,291 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:02" (1/1) ... [2025-03-16 19:04:02,291 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:02" (1/1) ... [2025-03-16 19:04:02,296 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:02" (1/1) ... [2025-03-16 19:04:02,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:02" (1/1) ... [2025-03-16 19:04:02,299 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:02" (1/1) ... [2025-03-16 19:04:02,299 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:02" (1/1) ... [2025-03-16 19:04:02,301 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 19:04:02,302 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 19:04:02,302 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 19:04:02,302 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 19:04:02,302 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:02" (1/1) ... [2025-03-16 19:04:02,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:04:02,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:04:02,329 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 19:04:02,331 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 19:04:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 19:04:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 19:04:02,346 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 19:04:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 19:04:02,346 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 19:04:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 19:04:02,346 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 19:04:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 19:04:02,347 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 19:04:02,347 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 19:04:02,347 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 19:04:02,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 19:04:02,347 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 19:04:02,347 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 19:04:02,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 19:04:02,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 19:04:02,413 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 19:04:02,415 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 19:04:02,857 INFO L? ?]: Removed 57 outVars from TransFormulas that were not future-live. [2025-03-16 19:04:02,857 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 19:04:02,872 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 19:04:02,872 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 19:04:02,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:04:02 BoogieIcfgContainer [2025-03-16 19:04:02,873 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 19:04:02,874 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 19:04:02,874 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 19:04:02,878 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 19:04:02,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 07:04:01" (1/3) ... [2025-03-16 19:04:02,878 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7de4d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:04:02, skipping insertion in model container [2025-03-16 19:04:02,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:02" (2/3) ... [2025-03-16 19:04:02,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7de4d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:04:02, skipping insertion in model container [2025-03-16 19:04:02,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:04:02" (3/3) ... [2025-03-16 19:04:02,880 INFO L128 eAbstractionObserver]: Analyzing ICFG transmitter.07.cil.c [2025-03-16 19:04:02,890 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 19:04:02,891 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG transmitter.07.cil.c that has 7 procedures, 236 locations, 1 initial locations, 11 loop locations, and 1 error locations. [2025-03-16 19:04:02,931 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 19:04:02,942 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;@4f6d907, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 19:04:02,942 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 19:04:02,946 INFO L276 IsEmpty]: Start isEmpty. Operand has 236 states, 209 states have (on average 1.631578947368421) internal successors, (341), 210 states have internal predecessors, (341), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-16 19:04:02,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 19:04:02,954 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:02,955 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:02,955 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:02,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:02,959 INFO L85 PathProgramCache]: Analyzing trace with hash 89801644, now seen corresponding path program 1 times [2025-03-16 19:04:02,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:02,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623444234] [2025-03-16 19:04:02,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:02,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:03,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 19:04:03,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 19:04:03,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:03,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:03,387 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 19:04:03,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:03,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623444234] [2025-03-16 19:04:03,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623444234] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:03,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:03,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:04:03,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46453944] [2025-03-16 19:04:03,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:03,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:04:03,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:03,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:04:03,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:04:03,412 INFO L87 Difference]: Start difference. First operand has 236 states, 209 states have (on average 1.631578947368421) internal successors, (341), 210 states have internal predecessors, (341), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:03,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:03,917 INFO L93 Difference]: Finished difference Result 709 states and 1162 transitions. [2025-03-16 19:04:03,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:04:03,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2025-03-16 19:04:03,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:03,930 INFO L225 Difference]: With dead ends: 709 [2025-03-16 19:04:03,930 INFO L226 Difference]: Without dead ends: 480 [2025-03-16 19:04:03,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:04:03,940 INFO L435 NwaCegarLoop]: 290 mSDtfsCounter, 681 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:03,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 1020 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:04:03,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2025-03-16 19:04:03,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 461. [2025-03-16 19:04:03,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 412 states have (on average 1.587378640776699) internal successors, (654), 414 states have internal predecessors, (654), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2025-03-16 19:04:03,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 725 transitions. [2025-03-16 19:04:04,000 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 725 transitions. Word has length 115 [2025-03-16 19:04:04,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:04,001 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 725 transitions. [2025-03-16 19:04:04,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:04,001 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 725 transitions. [2025-03-16 19:04:04,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 19:04:04,006 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:04,006 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:04,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 19:04:04,006 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:04,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:04,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1418033777, now seen corresponding path program 1 times [2025-03-16 19:04:04,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:04,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060929562] [2025-03-16 19:04:04,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:04,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:04,026 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 19:04:04,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 19:04:04,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:04,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:04,159 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 19:04:04,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:04,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060929562] [2025-03-16 19:04:04,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060929562] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:04,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:04,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:04:04,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43596406] [2025-03-16 19:04:04,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:04,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:04:04,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:04,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:04:04,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:04:04,163 INFO L87 Difference]: Start difference. First operand 461 states and 725 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:04,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:04,453 INFO L93 Difference]: Finished difference Result 954 states and 1515 transitions. [2025-03-16 19:04:04,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:04:04,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2025-03-16 19:04:04,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:04,459 INFO L225 Difference]: With dead ends: 954 [2025-03-16 19:04:04,461 INFO L226 Difference]: Without dead ends: 506 [2025-03-16 19:04:04,462 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:04:04,463 INFO L435 NwaCegarLoop]: 274 mSDtfsCounter, 486 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:04,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 723 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:04:04,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2025-03-16 19:04:04,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 461. [2025-03-16 19:04:04,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 412 states have (on average 1.5825242718446602) internal successors, (652), 414 states have internal predecessors, (652), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2025-03-16 19:04:04,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 723 transitions. [2025-03-16 19:04:04,499 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 723 transitions. Word has length 115 [2025-03-16 19:04:04,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:04,499 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 723 transitions. [2025-03-16 19:04:04,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:04,499 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 723 transitions. [2025-03-16 19:04:04,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 19:04:04,502 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:04,502 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:04,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 19:04:04,503 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:04,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:04,503 INFO L85 PathProgramCache]: Analyzing trace with hash -902513328, now seen corresponding path program 1 times [2025-03-16 19:04:04,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:04,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163686601] [2025-03-16 19:04:04,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:04,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:04,518 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 19:04:04,521 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 19:04:04,521 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:04,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:04,629 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 19:04:04,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:04,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163686601] [2025-03-16 19:04:04,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163686601] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:04,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:04,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:04:04,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815084253] [2025-03-16 19:04:04,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:04,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:04:04,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:04,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:04:04,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:04:04,630 INFO L87 Difference]: Start difference. First operand 461 states and 723 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:05,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:05,240 INFO L93 Difference]: Finished difference Result 1243 states and 1965 transitions. [2025-03-16 19:04:05,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:04:05,241 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2025-03-16 19:04:05,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:05,245 INFO L225 Difference]: With dead ends: 1243 [2025-03-16 19:04:05,245 INFO L226 Difference]: Without dead ends: 795 [2025-03-16 19:04:05,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:04:05,246 INFO L435 NwaCegarLoop]: 479 mSDtfsCounter, 736 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:05,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1904 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:04:05,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2025-03-16 19:04:05,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 672. [2025-03-16 19:04:05,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 601 states have (on average 1.5723793677204658) internal successors, (945), 604 states have internal predecessors, (945), 50 states have call successors, (50), 18 states have call predecessors, (50), 20 states have return successors, (54), 51 states have call predecessors, (54), 50 states have call successors, (54) [2025-03-16 19:04:05,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1049 transitions. [2025-03-16 19:04:05,278 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1049 transitions. Word has length 115 [2025-03-16 19:04:05,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:05,278 INFO L471 AbstractCegarLoop]: Abstraction has 672 states and 1049 transitions. [2025-03-16 19:04:05,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:05,279 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1049 transitions. [2025-03-16 19:04:05,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 19:04:05,280 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:05,280 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:05,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 19:04:05,280 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:05,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:05,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1855714961, now seen corresponding path program 1 times [2025-03-16 19:04:05,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:05,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025817564] [2025-03-16 19:04:05,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:05,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:05,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 19:04:05,293 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 19:04:05,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:05,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:05,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:04:05,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:05,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025817564] [2025-03-16 19:04:05,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025817564] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:05,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:05,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:04:05,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271477688] [2025-03-16 19:04:05,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:05,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:04:05,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:05,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:04:05,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:04:05,410 INFO L87 Difference]: Start difference. First operand 672 states and 1049 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:06,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:06,076 INFO L93 Difference]: Finished difference Result 1910 states and 3010 transitions. [2025-03-16 19:04:06,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:04:06,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2025-03-16 19:04:06,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:06,082 INFO L225 Difference]: With dead ends: 1910 [2025-03-16 19:04:06,083 INFO L226 Difference]: Without dead ends: 1251 [2025-03-16 19:04:06,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:04:06,089 INFO L435 NwaCegarLoop]: 475 mSDtfsCounter, 731 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:06,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 1888 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 19:04:06,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2025-03-16 19:04:06,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1119. [2025-03-16 19:04:06,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1002 states have (on average 1.5708582834331337) internal successors, (1574), 1009 states have internal predecessors, (1574), 80 states have call successors, (80), 30 states have call predecessors, (80), 36 states have return successors, (96), 83 states have call predecessors, (96), 80 states have call successors, (96) [2025-03-16 19:04:06,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1750 transitions. [2025-03-16 19:04:06,151 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1750 transitions. Word has length 115 [2025-03-16 19:04:06,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:06,151 INFO L471 AbstractCegarLoop]: Abstraction has 1119 states and 1750 transitions. [2025-03-16 19:04:06,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:06,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1750 transitions. [2025-03-16 19:04:06,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 19:04:06,153 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:06,153 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:06,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 19:04:06,154 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:06,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:06,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1055179408, now seen corresponding path program 1 times [2025-03-16 19:04:06,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:06,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151147932] [2025-03-16 19:04:06,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:06,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:06,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 19:04:06,169 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 19:04:06,169 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:06,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:06,288 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 19:04:06,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:06,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151147932] [2025-03-16 19:04:06,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151147932] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:06,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:06,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:04:06,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979802246] [2025-03-16 19:04:06,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:06,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:04:06,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:06,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:04:06,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:04:06,290 INFO L87 Difference]: Start difference. First operand 1119 states and 1750 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:06,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:06,895 INFO L93 Difference]: Finished difference Result 3339 states and 5293 transitions. [2025-03-16 19:04:06,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:04:06,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2025-03-16 19:04:06,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:06,905 INFO L225 Difference]: With dead ends: 3339 [2025-03-16 19:04:06,905 INFO L226 Difference]: Without dead ends: 2233 [2025-03-16 19:04:06,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:04:06,909 INFO L435 NwaCegarLoop]: 472 mSDtfsCounter, 726 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:06,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 1876 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:04:06,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2025-03-16 19:04:06,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 2082. [2025-03-16 19:04:06,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 1867 states have (on average 1.580074986609534) internal successors, (2950), 1888 states have internal predecessors, (2950), 140 states have call successors, (140), 54 states have call predecessors, (140), 74 states have return successors, (204), 147 states have call predecessors, (204), 140 states have call successors, (204) [2025-03-16 19:04:07,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 3294 transitions. [2025-03-16 19:04:07,006 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 3294 transitions. Word has length 115 [2025-03-16 19:04:07,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:07,006 INFO L471 AbstractCegarLoop]: Abstraction has 2082 states and 3294 transitions. [2025-03-16 19:04:07,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:07,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 3294 transitions. [2025-03-16 19:04:07,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 19:04:07,010 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:07,011 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:07,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 19:04:07,012 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:07,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:07,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1583545009, now seen corresponding path program 1 times [2025-03-16 19:04:07,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:07,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900331020] [2025-03-16 19:04:07,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:07,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:07,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 19:04:07,029 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 19:04:07,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:07,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:07,120 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 19:04:07,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:07,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900331020] [2025-03-16 19:04:07,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900331020] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:07,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:07,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:04:07,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158475936] [2025-03-16 19:04:07,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:07,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:04:07,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:07,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:04:07,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:04:07,122 INFO L87 Difference]: Start difference. First operand 2082 states and 3294 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:07,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:07,757 INFO L93 Difference]: Finished difference Result 6454 states and 10415 transitions. [2025-03-16 19:04:07,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:04:07,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2025-03-16 19:04:07,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:07,775 INFO L225 Difference]: With dead ends: 6454 [2025-03-16 19:04:07,775 INFO L226 Difference]: Without dead ends: 4385 [2025-03-16 19:04:07,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:04:07,782 INFO L435 NwaCegarLoop]: 469 mSDtfsCounter, 721 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:07,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 1864 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:04:07,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4385 states. [2025-03-16 19:04:07,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4385 to 4197. [2025-03-16 19:04:07,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4197 states, 3768 states have (on average 1.5981953290870488) internal successors, (6022), 3835 states have internal predecessors, (6022), 260 states have call successors, (260), 102 states have call predecessors, (260), 168 states have return successors, (516), 275 states have call predecessors, (516), 260 states have call successors, (516) [2025-03-16 19:04:07,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4197 states to 4197 states and 6798 transitions. [2025-03-16 19:04:07,960 INFO L78 Accepts]: Start accepts. Automaton has 4197 states and 6798 transitions. Word has length 115 [2025-03-16 19:04:07,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:07,960 INFO L471 AbstractCegarLoop]: Abstraction has 4197 states and 6798 transitions. [2025-03-16 19:04:07,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:07,961 INFO L276 IsEmpty]: Start isEmpty. Operand 4197 states and 6798 transitions. [2025-03-16 19:04:07,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 19:04:07,965 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:07,965 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:07,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 19:04:07,966 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:07,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:07,966 INFO L85 PathProgramCache]: Analyzing trace with hash -907852400, now seen corresponding path program 1 times [2025-03-16 19:04:07,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:07,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958933275] [2025-03-16 19:04:07,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:07,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:07,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 19:04:07,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 19:04:07,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:07,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:08,059 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 19:04:08,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:08,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958933275] [2025-03-16 19:04:08,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958933275] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:08,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:08,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:04:08,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442002747] [2025-03-16 19:04:08,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:08,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:04:08,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:08,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:04:08,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:04:08,061 INFO L87 Difference]: Start difference. First operand 4197 states and 6798 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:08,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:08,828 INFO L93 Difference]: Finished difference Result 13381 states and 22305 transitions. [2025-03-16 19:04:08,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:04:08,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2025-03-16 19:04:08,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:08,872 INFO L225 Difference]: With dead ends: 13381 [2025-03-16 19:04:08,873 INFO L226 Difference]: Without dead ends: 9197 [2025-03-16 19:04:08,885 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:04:08,886 INFO L435 NwaCegarLoop]: 466 mSDtfsCounter, 716 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:08,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1852 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:04:08,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9197 states. [2025-03-16 19:04:09,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9197 to 8940. [2025-03-16 19:04:09,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8940 states, 8029 states have (on average 1.6218707186449122) internal successors, (13022), 8242 states have internal predecessors, (13022), 500 states have call successors, (500), 198 states have call predecessors, (500), 410 states have return successors, (1524), 531 states have call predecessors, (1524), 500 states have call successors, (1524) [2025-03-16 19:04:09,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8940 states to 8940 states and 15046 transitions. [2025-03-16 19:04:09,276 INFO L78 Accepts]: Start accepts. Automaton has 8940 states and 15046 transitions. Word has length 115 [2025-03-16 19:04:09,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:09,276 INFO L471 AbstractCegarLoop]: Abstraction has 8940 states and 15046 transitions. [2025-03-16 19:04:09,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:09,276 INFO L276 IsEmpty]: Start isEmpty. Operand 8940 states and 15046 transitions. [2025-03-16 19:04:09,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 19:04:09,285 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:09,285 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:09,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 19:04:09,286 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:09,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:09,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1717339857, now seen corresponding path program 1 times [2025-03-16 19:04:09,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:09,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895682398] [2025-03-16 19:04:09,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:09,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:09,295 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 19:04:09,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 19:04:09,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:09,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:09,374 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 19:04:09,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:09,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895682398] [2025-03-16 19:04:09,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895682398] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:09,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:09,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:04:09,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602124789] [2025-03-16 19:04:09,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:09,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:04:09,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:09,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:04:09,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:04:09,377 INFO L87 Difference]: Start difference. First operand 8940 states and 15046 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:09,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:09,898 INFO L93 Difference]: Finished difference Result 20072 states and 34836 transitions. [2025-03-16 19:04:09,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:04:09,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2025-03-16 19:04:09,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:09,947 INFO L225 Difference]: With dead ends: 20072 [2025-03-16 19:04:09,948 INFO L226 Difference]: Without dead ends: 11145 [2025-03-16 19:04:09,972 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:04:09,973 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 478 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:09,974 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 685 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:04:09,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11145 states. [2025-03-16 19:04:10,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11145 to 8940. [2025-03-16 19:04:10,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8940 states, 8029 states have (on average 1.6177606177606179) internal successors, (12989), 8242 states have internal predecessors, (12989), 500 states have call successors, (500), 198 states have call predecessors, (500), 410 states have return successors, (1524), 531 states have call predecessors, (1524), 500 states have call successors, (1524) [2025-03-16 19:04:10,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8940 states to 8940 states and 15013 transitions. [2025-03-16 19:04:10,343 INFO L78 Accepts]: Start accepts. Automaton has 8940 states and 15013 transitions. Word has length 115 [2025-03-16 19:04:10,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:10,343 INFO L471 AbstractCegarLoop]: Abstraction has 8940 states and 15013 transitions. [2025-03-16 19:04:10,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:10,344 INFO L276 IsEmpty]: Start isEmpty. Operand 8940 states and 15013 transitions. [2025-03-16 19:04:10,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 19:04:10,352 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:10,352 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:10,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 19:04:10,352 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:10,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:10,352 INFO L85 PathProgramCache]: Analyzing trace with hash 2135872944, now seen corresponding path program 1 times [2025-03-16 19:04:10,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:10,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106367944] [2025-03-16 19:04:10,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:10,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:10,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 19:04:10,362 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 19:04:10,362 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:10,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:10,446 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 19:04:10,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:10,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106367944] [2025-03-16 19:04:10,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106367944] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:10,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:10,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:04:10,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421858084] [2025-03-16 19:04:10,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:10,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:04:10,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:10,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:04:10,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:04:10,448 INFO L87 Difference]: Start difference. First operand 8940 states and 15013 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:10,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:10,977 INFO L93 Difference]: Finished difference Result 19827 states and 34280 transitions. [2025-03-16 19:04:10,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:04:10,978 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2025-03-16 19:04:10,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:11,021 INFO L225 Difference]: With dead ends: 19827 [2025-03-16 19:04:11,022 INFO L226 Difference]: Without dead ends: 10900 [2025-03-16 19:04:11,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:04:11,048 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 473 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:11,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 675 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:04:11,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10900 states. [2025-03-16 19:04:11,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10900 to 8940. [2025-03-16 19:04:11,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8940 states, 8029 states have (on average 1.6136505168763233) internal successors, (12956), 8242 states have internal predecessors, (12956), 500 states have call successors, (500), 198 states have call predecessors, (500), 410 states have return successors, (1524), 531 states have call predecessors, (1524), 500 states have call successors, (1524) [2025-03-16 19:04:11,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8940 states to 8940 states and 14980 transitions. [2025-03-16 19:04:11,556 INFO L78 Accepts]: Start accepts. Automaton has 8940 states and 14980 transitions. Word has length 115 [2025-03-16 19:04:11,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:11,556 INFO L471 AbstractCegarLoop]: Abstraction has 8940 states and 14980 transitions. [2025-03-16 19:04:11,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:11,557 INFO L276 IsEmpty]: Start isEmpty. Operand 8940 states and 14980 transitions. [2025-03-16 19:04:11,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 19:04:11,566 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:11,566 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:11,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 19:04:11,566 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:11,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:11,567 INFO L85 PathProgramCache]: Analyzing trace with hash 2121622799, now seen corresponding path program 1 times [2025-03-16 19:04:11,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:11,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187883217] [2025-03-16 19:04:11,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:11,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:11,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 19:04:11,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 19:04:11,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:11,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:11,697 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 19:04:11,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:11,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187883217] [2025-03-16 19:04:11,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187883217] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:11,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:11,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:04:11,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957440796] [2025-03-16 19:04:11,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:11,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:04:11,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:11,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:04:11,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:04:11,699 INFO L87 Difference]: Start difference. First operand 8940 states and 14980 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:12,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:12,654 INFO L93 Difference]: Finished difference Result 29644 states and 51538 transitions. [2025-03-16 19:04:12,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:04:12,655 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2025-03-16 19:04:12,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:12,735 INFO L225 Difference]: With dead ends: 29644 [2025-03-16 19:04:12,735 INFO L226 Difference]: Without dead ends: 20717 [2025-03-16 19:04:12,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:04:12,761 INFO L435 NwaCegarLoop]: 444 mSDtfsCounter, 841 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:12,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 1782 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:04:12,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20717 states. [2025-03-16 19:04:13,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20717 to 19221. [2025-03-16 19:04:13,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19221 states, 17216 states have (on average 1.632667286245353) internal successors, (28108), 17883 states have internal predecessors, (28108), 948 states have call successors, (948), 390 states have call predecessors, (948), 1056 states have return successors, (5044), 1011 states have call predecessors, (5044), 948 states have call successors, (5044) [2025-03-16 19:04:13,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19221 states to 19221 states and 34100 transitions. [2025-03-16 19:04:13,623 INFO L78 Accepts]: Start accepts. Automaton has 19221 states and 34100 transitions. Word has length 115 [2025-03-16 19:04:13,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:13,623 INFO L471 AbstractCegarLoop]: Abstraction has 19221 states and 34100 transitions. [2025-03-16 19:04:13,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:13,624 INFO L276 IsEmpty]: Start isEmpty. Operand 19221 states and 34100 transitions. [2025-03-16 19:04:13,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 19:04:13,640 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:13,640 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:13,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 19:04:13,641 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:13,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:13,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1151331792, now seen corresponding path program 1 times [2025-03-16 19:04:13,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:13,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73418453] [2025-03-16 19:04:13,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:13,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:13,650 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 19:04:13,653 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 19:04:13,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:13,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:13,738 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 19:04:13,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:13,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73418453] [2025-03-16 19:04:13,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73418453] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:13,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:13,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:04:13,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726853710] [2025-03-16 19:04:13,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:13,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:04:13,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:13,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:04:13,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:04:13,740 INFO L87 Difference]: Start difference. First operand 19221 states and 34100 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:14,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:14,932 INFO L93 Difference]: Finished difference Result 42815 states and 78984 transitions. [2025-03-16 19:04:14,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:04:14,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2025-03-16 19:04:14,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:15,031 INFO L225 Difference]: With dead ends: 42815 [2025-03-16 19:04:15,032 INFO L226 Difference]: Without dead ends: 23607 [2025-03-16 19:04:15,069 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:04:15,070 INFO L435 NwaCegarLoop]: 253 mSDtfsCounter, 469 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:15,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 661 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:04:15,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23607 states. [2025-03-16 19:04:15,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23607 to 19221. [2025-03-16 19:04:15,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19221 states, 17216 states have (on average 1.6288917286245352) internal successors, (28043), 17883 states have internal predecessors, (28043), 948 states have call successors, (948), 390 states have call predecessors, (948), 1056 states have return successors, (5044), 1011 states have call predecessors, (5044), 948 states have call successors, (5044) [2025-03-16 19:04:16,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19221 states to 19221 states and 34035 transitions. [2025-03-16 19:04:16,010 INFO L78 Accepts]: Start accepts. Automaton has 19221 states and 34035 transitions. Word has length 115 [2025-03-16 19:04:16,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:16,010 INFO L471 AbstractCegarLoop]: Abstraction has 19221 states and 34035 transitions. [2025-03-16 19:04:16,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:16,011 INFO L276 IsEmpty]: Start isEmpty. Operand 19221 states and 34035 transitions. [2025-03-16 19:04:16,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 19:04:16,024 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:16,024 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:16,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 19:04:16,024 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:16,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:16,025 INFO L85 PathProgramCache]: Analyzing trace with hash 2089863407, now seen corresponding path program 1 times [2025-03-16 19:04:16,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:16,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878402270] [2025-03-16 19:04:16,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:16,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:16,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 19:04:16,036 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 19:04:16,036 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:16,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:16,097 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 19:04:16,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:16,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878402270] [2025-03-16 19:04:16,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878402270] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:16,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:16,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:04:16,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851823292] [2025-03-16 19:04:16,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:16,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:04:16,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:16,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:04:16,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:04:16,099 INFO L87 Difference]: Start difference. First operand 19221 states and 34035 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:16,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:16,975 INFO L93 Difference]: Finished difference Result 42084 states and 77392 transitions. [2025-03-16 19:04:16,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:04:16,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2025-03-16 19:04:16,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:17,069 INFO L225 Difference]: With dead ends: 42084 [2025-03-16 19:04:17,069 INFO L226 Difference]: Without dead ends: 22876 [2025-03-16 19:04:17,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:04:17,108 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 466 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:17,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 653 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:04:17,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22876 states. [2025-03-16 19:04:18,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22876 to 19221. [2025-03-16 19:04:18,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19221 states, 17216 states have (on average 1.6251161710037174) internal successors, (27978), 17883 states have internal predecessors, (27978), 948 states have call successors, (948), 390 states have call predecessors, (948), 1056 states have return successors, (5044), 1011 states have call predecessors, (5044), 948 states have call successors, (5044) [2025-03-16 19:04:18,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19221 states to 19221 states and 33970 transitions. [2025-03-16 19:04:18,323 INFO L78 Accepts]: Start accepts. Automaton has 19221 states and 33970 transitions. Word has length 115 [2025-03-16 19:04:18,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:18,323 INFO L471 AbstractCegarLoop]: Abstraction has 19221 states and 33970 transitions. [2025-03-16 19:04:18,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:18,324 INFO L276 IsEmpty]: Start isEmpty. Operand 19221 states and 33970 transitions. [2025-03-16 19:04:18,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 19:04:18,338 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:18,338 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:18,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 19:04:18,339 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:18,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:18,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1704496624, now seen corresponding path program 1 times [2025-03-16 19:04:18,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:18,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183344073] [2025-03-16 19:04:18,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:18,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:18,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 19:04:18,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 19:04:18,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:18,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:18,447 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 19:04:18,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:18,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183344073] [2025-03-16 19:04:18,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183344073] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:18,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:18,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:04:18,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635461984] [2025-03-16 19:04:18,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:18,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:04:18,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:18,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:04:18,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:04:18,449 INFO L87 Difference]: Start difference. First operand 19221 states and 33970 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:20,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:20,650 INFO L93 Difference]: Finished difference Result 61661 states and 115638 transitions. [2025-03-16 19:04:20,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:04:20,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2025-03-16 19:04:20,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:20,861 INFO L225 Difference]: With dead ends: 61661 [2025-03-16 19:04:20,861 INFO L226 Difference]: Without dead ends: 42453 [2025-03-16 19:04:20,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:04:20,937 INFO L435 NwaCegarLoop]: 431 mSDtfsCounter, 739 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:20,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 1732 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:04:20,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42453 states. [2025-03-16 19:04:23,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42453 to 40902. [2025-03-16 19:04:23,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40902 states, 36255 states have (on average 1.628189215280651) internal successors, (59030), 38316 states have internal predecessors, (59030), 1812 states have call successors, (1812), 774 states have call predecessors, (1812), 2834 states have return successors, (18196), 1939 states have call predecessors, (18196), 1812 states have call successors, (18196) [2025-03-16 19:04:23,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40902 states to 40902 states and 79038 transitions. [2025-03-16 19:04:23,216 INFO L78 Accepts]: Start accepts. Automaton has 40902 states and 79038 transitions. Word has length 115 [2025-03-16 19:04:23,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:23,216 INFO L471 AbstractCegarLoop]: Abstraction has 40902 states and 79038 transitions. [2025-03-16 19:04:23,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:23,216 INFO L276 IsEmpty]: Start isEmpty. Operand 40902 states and 79038 transitions. [2025-03-16 19:04:23,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 19:04:23,241 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:23,241 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:23,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 19:04:23,241 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:23,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:23,241 INFO L85 PathProgramCache]: Analyzing trace with hash -940333873, now seen corresponding path program 1 times [2025-03-16 19:04:23,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:23,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953616916] [2025-03-16 19:04:23,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:23,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:23,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 19:04:23,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 19:04:23,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:23,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:23,297 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 19:04:23,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:23,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953616916] [2025-03-16 19:04:23,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953616916] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:23,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:23,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:04:23,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968436122] [2025-03-16 19:04:23,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:23,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:04:23,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:23,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:04:23,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:04:23,299 INFO L87 Difference]: Start difference. First operand 40902 states and 79038 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:26,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:26,288 INFO L93 Difference]: Finished difference Result 88358 states and 181264 transitions. [2025-03-16 19:04:26,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:04:26,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2025-03-16 19:04:26,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:26,517 INFO L225 Difference]: With dead ends: 88358 [2025-03-16 19:04:26,517 INFO L226 Difference]: Without dead ends: 47469 [2025-03-16 19:04:26,610 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:04:26,610 INFO L435 NwaCegarLoop]: 245 mSDtfsCounter, 462 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:26,611 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 639 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:04:26,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47469 states. [2025-03-16 19:04:29,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47469 to 40902. [2025-03-16 19:04:29,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40902 states, 36255 states have (on average 1.6246310853675354) internal successors, (58901), 38316 states have internal predecessors, (58901), 1812 states have call successors, (1812), 774 states have call predecessors, (1812), 2834 states have return successors, (18196), 1939 states have call predecessors, (18196), 1812 states have call successors, (18196) [2025-03-16 19:04:29,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40902 states to 40902 states and 78909 transitions. [2025-03-16 19:04:29,580 INFO L78 Accepts]: Start accepts. Automaton has 40902 states and 78909 transitions. Word has length 115 [2025-03-16 19:04:29,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:29,581 INFO L471 AbstractCegarLoop]: Abstraction has 40902 states and 78909 transitions. [2025-03-16 19:04:29,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:29,581 INFO L276 IsEmpty]: Start isEmpty. Operand 40902 states and 78909 transitions. [2025-03-16 19:04:29,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 19:04:29,601 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:29,601 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:29,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 19:04:29,601 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:29,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:29,602 INFO L85 PathProgramCache]: Analyzing trace with hash 914011664, now seen corresponding path program 1 times [2025-03-16 19:04:29,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:29,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932367282] [2025-03-16 19:04:29,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:29,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:29,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 19:04:29,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 19:04:29,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:29,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:29,667 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 19:04:29,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:29,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932367282] [2025-03-16 19:04:29,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932367282] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:29,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:29,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:04:29,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963142611] [2025-03-16 19:04:29,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:29,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:04:29,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:29,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:04:29,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:04:29,669 INFO L87 Difference]: Start difference. First operand 40902 states and 78909 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:04:34,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:34,670 INFO L93 Difference]: Finished difference Result 127644 states and 272889 transitions. [2025-03-16 19:04:34,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:04:34,670 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2025-03-16 19:04:34,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:35,084 INFO L225 Difference]: With dead ends: 127644 [2025-03-16 19:04:35,084 INFO L226 Difference]: Without dead ends: 86755 [2025-03-16 19:04:35,208 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:04:35,208 INFO L435 NwaCegarLoop]: 423 mSDtfsCounter, 672 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:35,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 1701 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:04:35,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86755 states.