./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label23.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label23.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 adf96f71bf2a13ae5fd22bce01b9c481e5a9d21572a73a17cea58c8fcaecb44e --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 01:52:00,012 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 01:52:00,058 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 01:52:00,065 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 01:52:00,065 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 01:52:00,079 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 01:52:00,080 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 01:52:00,080 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 01:52:00,080 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 01:52:00,080 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 01:52:00,080 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 01:52:00,080 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 01:52:00,081 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 01:52:00,081 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 01:52:00,081 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 01:52:00,081 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 01:52:00,081 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 01:52:00,081 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 01:52:00,081 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 01:52:00,081 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 01:52:00,081 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 01:52:00,081 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 01:52:00,082 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 01:52:00,082 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 01:52:00,082 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 01:52:00,082 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 01:52:00,082 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 01:52:00,082 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 01:52:00,082 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 01:52:00,082 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 01:52:00,082 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 01:52:00,082 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 01:52:00,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 01:52:00,083 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 01:52:00,083 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 01:52:00,083 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 01:52:00,083 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 01:52:00,083 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 01:52:00,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 01:52:00,083 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 01:52:00,083 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 01:52:00,083 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 01:52:00,083 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 01:52:00,083 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 -> adf96f71bf2a13ae5fd22bce01b9c481e5a9d21572a73a17cea58c8fcaecb44e [2025-03-08 01:52:00,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 01:52:00,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 01:52:00,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 01:52:00,302 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 01:52:00,302 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 01:52:00,303 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label23.c [2025-03-08 01:52:01,389 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b9be0a79/a4c9804df6584bc8bae590a34966d0f5/FLAG08da56a84 [2025-03-08 01:52:01,876 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 01:52:01,877 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label23.c [2025-03-08 01:52:01,912 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b9be0a79/a4c9804df6584bc8bae590a34966d0f5/FLAG08da56a84 [2025-03-08 01:52:01,958 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b9be0a79/a4c9804df6584bc8bae590a34966d0f5 [2025-03-08 01:52:01,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 01:52:01,962 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 01:52:01,963 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 01:52:01,964 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 01:52:01,966 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 01:52:01,967 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 01:52:01" (1/1) ... [2025-03-08 01:52:01,968 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@480f5233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:52:01, skipping insertion in model container [2025-03-08 01:52:01,969 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 01:52:01" (1/1) ... [2025-03-08 01:52:02,054 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 01:52:02,210 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label23.c[2192,2205] [2025-03-08 01:52:02,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 01:52:02,798 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 01:52:02,806 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label23.c[2192,2205] [2025-03-08 01:52:03,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 01:52:03,130 INFO L204 MainTranslator]: Completed translation [2025-03-08 01:52:03,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:52:03 WrapperNode [2025-03-08 01:52:03,132 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 01:52:03,133 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 01:52:03,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 01:52:03,133 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 01:52:03,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:52:03" (1/1) ... [2025-03-08 01:52:03,185 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:52:03" (1/1) ... [2025-03-08 01:52:03,563 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5584 [2025-03-08 01:52:03,563 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 01:52:03,564 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 01:52:03,564 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 01:52:03,564 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 01:52:03,579 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:52:03" (1/1) ... [2025-03-08 01:52:03,582 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:52:03" (1/1) ... [2025-03-08 01:52:03,677 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:52:03" (1/1) ... [2025-03-08 01:52:03,859 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 01:52:03,859 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:52:03" (1/1) ... [2025-03-08 01:52:03,859 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:52:03" (1/1) ... [2025-03-08 01:52:03,980 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:52:03" (1/1) ... [2025-03-08 01:52:03,997 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:52:03" (1/1) ... [2025-03-08 01:52:04,021 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:52:03" (1/1) ... [2025-03-08 01:52:04,041 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:52:03" (1/1) ... [2025-03-08 01:52:04,099 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 01:52:04,100 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 01:52:04,100 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 01:52:04,101 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 01:52:04,101 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:52:03" (1/1) ... [2025-03-08 01:52:04,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 01:52:04,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 01:52:04,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 01:52:04,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 01:52:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 01:52:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 01:52:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 01:52:04,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 01:52:04,195 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 01:52:04,196 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 01:52:08,615 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1894: havoc calculate_output_#t~ret9#1; [2025-03-08 01:52:08,616 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3629: havoc calculate_output2_#t~ret10#1; [2025-03-08 01:52:08,616 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L5351: havoc calculate_output3_#t~ret11#1; [2025-03-08 01:52:08,886 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2025-03-08 01:52:08,886 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 01:52:08,918 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 01:52:08,918 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 01:52:08,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 01:52:08 BoogieIcfgContainer [2025-03-08 01:52:08,918 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 01:52:08,923 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 01:52:08,924 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 01:52:08,927 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 01:52:08,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 01:52:01" (1/3) ... [2025-03-08 01:52:08,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5cce36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 01:52:08, skipping insertion in model container [2025-03-08 01:52:08,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:52:03" (2/3) ... [2025-03-08 01:52:08,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5cce36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 01:52:08, skipping insertion in model container [2025-03-08 01:52:08,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 01:52:08" (3/3) ... [2025-03-08 01:52:08,928 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem13_label23.c [2025-03-08 01:52:08,939 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 01:52:08,940 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem13_label23.c that has 1 procedures, 1098 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 01:52:09,008 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 01:52:09,016 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;@16c87cc5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 01:52:09,017 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 01:52:09,024 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8266423357664234) internal successors, (2002), 1097 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:09,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-08 01:52:09,028 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:52:09,029 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:52:09,029 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:52:09,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:52:09,033 INFO L85 PathProgramCache]: Analyzing trace with hash -681478272, now seen corresponding path program 1 times [2025-03-08 01:52:09,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:52:09,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767958288] [2025-03-08 01:52:09,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:09,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:52:09,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-08 01:52:09,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-08 01:52:09,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:09,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:09,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 01:52:09,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:52:09,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767958288] [2025-03-08 01:52:09,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767958288] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:52:09,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:52:09,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 01:52:09,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773563051] [2025-03-08 01:52:09,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:52:09,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:52:09,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:52:09,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:52:09,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:09,218 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8266423357664234) internal successors, (2002), 1097 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:12,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:52:12,611 INFO L93 Difference]: Finished difference Result 3160 states and 5840 transitions. [2025-03-08 01:52:12,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:52:12,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-08 01:52:12,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:52:12,631 INFO L225 Difference]: With dead ends: 3160 [2025-03-08 01:52:12,631 INFO L226 Difference]: Without dead ends: 1983 [2025-03-08 01:52:12,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:12,639 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 1090 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-03-08 01:52:12,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 349 Invalid, 4004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [974 Valid, 3030 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-03-08 01:52:12,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2025-03-08 01:52:12,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1930. [2025-03-08 01:52:12,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1929 states have (on average 1.7973043027475375) internal successors, (3467), 1929 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:12,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 3467 transitions. [2025-03-08 01:52:12,741 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 3467 transitions. Word has length 13 [2025-03-08 01:52:12,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:52:12,741 INFO L471 AbstractCegarLoop]: Abstraction has 1930 states and 3467 transitions. [2025-03-08 01:52:12,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:12,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 3467 transitions. [2025-03-08 01:52:12,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-03-08 01:52:12,743 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:52:12,743 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:52:12,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 01:52:12,743 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:52:12,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:52:12,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1109860648, now seen corresponding path program 1 times [2025-03-08 01:52:12,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:52:12,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041847264] [2025-03-08 01:52:12,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:12,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:52:12,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-03-08 01:52:12,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-03-08 01:52:12,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:12,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:13,107 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 01:52:13,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:52:13,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041847264] [2025-03-08 01:52:13,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041847264] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:52:13,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:52:13,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 01:52:13,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407156394] [2025-03-08 01:52:13,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:52:13,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:52:13,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:52:13,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:52:13,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:13,111 INFO L87 Difference]: Start difference. First operand 1930 states and 3467 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:15,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:52:15,986 INFO L93 Difference]: Finished difference Result 4718 states and 8523 transitions. [2025-03-08 01:52:15,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:52:15,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2025-03-08 01:52:15,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:52:15,996 INFO L225 Difference]: With dead ends: 4718 [2025-03-08 01:52:15,996 INFO L226 Difference]: Without dead ends: 2790 [2025-03-08 01:52:15,999 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:16,000 INFO L435 NwaCegarLoop]: 601 mSDtfsCounter, 815 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 3015 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 3316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 3015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-08 01:52:16,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 737 Invalid, 3316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 3015 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-08 01:52:16,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2025-03-08 01:52:16,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 2729. [2025-03-08 01:52:16,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2729 states, 2728 states have (on average 1.7001466275659824) internal successors, (4638), 2728 states have internal predecessors, (4638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:16,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2729 states to 2729 states and 4638 transitions. [2025-03-08 01:52:16,048 INFO L78 Accepts]: Start accepts. Automaton has 2729 states and 4638 transitions. Word has length 78 [2025-03-08 01:52:16,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:52:16,049 INFO L471 AbstractCegarLoop]: Abstraction has 2729 states and 4638 transitions. [2025-03-08 01:52:16,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:16,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2729 states and 4638 transitions. [2025-03-08 01:52:16,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-03-08 01:52:16,050 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:52:16,050 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:52:16,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 01:52:16,051 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:52:16,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:52:16,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1649422489, now seen corresponding path program 1 times [2025-03-08 01:52:16,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:52:16,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058801437] [2025-03-08 01:52:16,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:16,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:52:16,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-03-08 01:52:16,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-03-08 01:52:16,080 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:16,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:16,191 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 01:52:16,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:52:16,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058801437] [2025-03-08 01:52:16,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058801437] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:52:16,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:52:16,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 01:52:16,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203914444] [2025-03-08 01:52:16,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:52:16,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:52:16,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:52:16,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:52:16,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:16,193 INFO L87 Difference]: Start difference. First operand 2729 states and 4638 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:19,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:52:19,194 INFO L93 Difference]: Finished difference Result 7862 states and 13450 transitions. [2025-03-08 01:52:19,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:52:19,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2025-03-08 01:52:19,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:52:19,210 INFO L225 Difference]: With dead ends: 7862 [2025-03-08 01:52:19,210 INFO L226 Difference]: Without dead ends: 5135 [2025-03-08 01:52:19,214 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:19,214 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 937 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2603 mSolverCounterSat, 749 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 3352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 749 IncrementalHoareTripleChecker+Valid, 2603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-08 01:52:19,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 1015 Invalid, 3352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [749 Valid, 2603 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-03-08 01:52:19,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5135 states. [2025-03-08 01:52:19,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5135 to 5127. [2025-03-08 01:52:19,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5127 states, 5126 states have (on average 1.533164260632072) internal successors, (7859), 5126 states have internal predecessors, (7859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:19,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 7859 transitions. [2025-03-08 01:52:19,286 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 7859 transitions. Word has length 84 [2025-03-08 01:52:19,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:52:19,287 INFO L471 AbstractCegarLoop]: Abstraction has 5127 states and 7859 transitions. [2025-03-08 01:52:19,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:19,287 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 7859 transitions. [2025-03-08 01:52:19,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-03-08 01:52:19,288 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:52:19,288 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:52:19,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 01:52:19,288 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:52:19,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:52:19,289 INFO L85 PathProgramCache]: Analyzing trace with hash 150803747, now seen corresponding path program 1 times [2025-03-08 01:52:19,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:52:19,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411139434] [2025-03-08 01:52:19,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:19,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:52:19,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-03-08 01:52:19,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-03-08 01:52:19,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:19,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:19,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 01:52:19,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:52:19,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411139434] [2025-03-08 01:52:19,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411139434] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:52:19,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:52:19,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:52:19,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433012019] [2025-03-08 01:52:19,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:52:19,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:52:19,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:52:19,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:52:19,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:19,393 INFO L87 Difference]: Start difference. First operand 5127 states and 7859 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:22,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:52:22,309 INFO L93 Difference]: Finished difference Result 14988 states and 23030 transitions. [2025-03-08 01:52:22,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:52:22,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2025-03-08 01:52:22,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:52:22,342 INFO L225 Difference]: With dead ends: 14988 [2025-03-08 01:52:22,342 INFO L226 Difference]: Without dead ends: 9863 [2025-03-08 01:52:22,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:22,350 INFO L435 NwaCegarLoop]: 1859 mSDtfsCounter, 935 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 3289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-08 01:52:22,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 2005 Invalid, 3289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2482 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-08 01:52:22,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9863 states. [2025-03-08 01:52:22,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9863 to 9858. [2025-03-08 01:52:22,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9858 states, 9857 states have (on average 1.4001217408947957) internal successors, (13801), 9857 states have internal predecessors, (13801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:22,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9858 states to 9858 states and 13801 transitions. [2025-03-08 01:52:22,489 INFO L78 Accepts]: Start accepts. Automaton has 9858 states and 13801 transitions. Word has length 124 [2025-03-08 01:52:22,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:52:22,491 INFO L471 AbstractCegarLoop]: Abstraction has 9858 states and 13801 transitions. [2025-03-08 01:52:22,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:22,492 INFO L276 IsEmpty]: Start isEmpty. Operand 9858 states and 13801 transitions. [2025-03-08 01:52:22,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-03-08 01:52:22,496 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:52:22,497 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:52:22,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 01:52:22,497 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:52:22,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:52:22,497 INFO L85 PathProgramCache]: Analyzing trace with hash 460793529, now seen corresponding path program 1 times [2025-03-08 01:52:22,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:52:22,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140572268] [2025-03-08 01:52:22,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:22,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:52:22,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-03-08 01:52:22,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-03-08 01:52:22,527 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:22,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:22,821 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 01:52:22,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:52:22,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140572268] [2025-03-08 01:52:22,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140572268] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:52:22,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:52:22,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:52:22,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129895136] [2025-03-08 01:52:22,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:52:22,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 01:52:22,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:52:22,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 01:52:22,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 01:52:22,823 INFO L87 Difference]: Start difference. First operand 9858 states and 13801 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:26,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:52:26,294 INFO L93 Difference]: Finished difference Result 17333 states and 24584 transitions. [2025-03-08 01:52:26,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 01:52:26,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2025-03-08 01:52:26,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:52:26,311 INFO L225 Difference]: With dead ends: 17333 [2025-03-08 01:52:26,311 INFO L226 Difference]: Without dead ends: 7477 [2025-03-08 01:52:26,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 01:52:26,317 INFO L435 NwaCegarLoop]: 681 mSDtfsCounter, 2517 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 4102 mSolverCounterSat, 702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2517 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 4804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 4102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-03-08 01:52:26,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2517 Valid, 963 Invalid, 4804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [702 Valid, 4102 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-03-08 01:52:26,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7477 states. [2025-03-08 01:52:26,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7477 to 7474. [2025-03-08 01:52:26,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7474 states, 7473 states have (on average 1.298139970560685) internal successors, (9701), 7473 states have internal predecessors, (9701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:26,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7474 states to 7474 states and 9701 transitions. [2025-03-08 01:52:26,394 INFO L78 Accepts]: Start accepts. Automaton has 7474 states and 9701 transitions. Word has length 130 [2025-03-08 01:52:26,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:52:26,394 INFO L471 AbstractCegarLoop]: Abstraction has 7474 states and 9701 transitions. [2025-03-08 01:52:26,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:26,394 INFO L276 IsEmpty]: Start isEmpty. Operand 7474 states and 9701 transitions. [2025-03-08 01:52:26,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2025-03-08 01:52:26,396 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:52:26,396 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:52:26,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 01:52:26,397 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:52:26,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:52:26,397 INFO L85 PathProgramCache]: Analyzing trace with hash 678842491, now seen corresponding path program 1 times [2025-03-08 01:52:26,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:52:26,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761079884] [2025-03-08 01:52:26,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:26,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:52:26,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 203 statements into 1 equivalence classes. [2025-03-08 01:52:26,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 203 of 203 statements. [2025-03-08 01:52:26,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:26,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-03-08 01:52:26,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:52:26,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761079884] [2025-03-08 01:52:26,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761079884] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:52:26,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:52:26,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 01:52:26,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884354308] [2025-03-08 01:52:26,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:52:26,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:52:26,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:52:26,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:52:26,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:26,570 INFO L87 Difference]: Start difference. First operand 7474 states and 9701 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:29,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:52:29,259 INFO L93 Difference]: Finished difference Result 20455 states and 27012 transitions. [2025-03-08 01:52:29,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:52:29,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2025-03-08 01:52:29,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:52:29,282 INFO L225 Difference]: With dead ends: 20455 [2025-03-08 01:52:29,282 INFO L226 Difference]: Without dead ends: 13770 [2025-03-08 01:52:29,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:29,289 INFO L435 NwaCegarLoop]: 829 mSDtfsCounter, 852 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2307 mSolverCounterSat, 866 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 3173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 866 IncrementalHoareTripleChecker+Valid, 2307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-08 01:52:29,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 965 Invalid, 3173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [866 Valid, 2307 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-08 01:52:29,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13770 states. [2025-03-08 01:52:29,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13770 to 13767. [2025-03-08 01:52:29,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13767 states, 13766 states have (on average 1.2065233183204997) internal successors, (16609), 13766 states have internal predecessors, (16609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:29,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13767 states to 13767 states and 16609 transitions. [2025-03-08 01:52:29,444 INFO L78 Accepts]: Start accepts. Automaton has 13767 states and 16609 transitions. Word has length 203 [2025-03-08 01:52:29,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:52:29,444 INFO L471 AbstractCegarLoop]: Abstraction has 13767 states and 16609 transitions. [2025-03-08 01:52:29,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:29,445 INFO L276 IsEmpty]: Start isEmpty. Operand 13767 states and 16609 transitions. [2025-03-08 01:52:29,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2025-03-08 01:52:29,446 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:52:29,446 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:52:29,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 01:52:29,447 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:52:29,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:52:29,447 INFO L85 PathProgramCache]: Analyzing trace with hash -226130850, now seen corresponding path program 1 times [2025-03-08 01:52:29,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:52:29,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116945838] [2025-03-08 01:52:29,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:29,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:52:29,464 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 225 statements into 1 equivalence classes. [2025-03-08 01:52:29,476 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 225 of 225 statements. [2025-03-08 01:52:29,476 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:29,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:29,651 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 01:52:29,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:52:29,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116945838] [2025-03-08 01:52:29,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116945838] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:52:29,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:52:29,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:52:29,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836274629] [2025-03-08 01:52:29,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:52:29,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:52:29,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:52:29,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:52:29,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:29,652 INFO L87 Difference]: Start difference. First operand 13767 states and 16609 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:32,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:52:32,160 INFO L93 Difference]: Finished difference Result 38585 states and 46875 transitions. [2025-03-08 01:52:32,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:52:32,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2025-03-08 01:52:32,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:52:32,194 INFO L225 Difference]: With dead ends: 38585 [2025-03-08 01:52:32,195 INFO L226 Difference]: Without dead ends: 24028 [2025-03-08 01:52:32,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:32,207 INFO L435 NwaCegarLoop]: 1797 mSDtfsCounter, 755 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2568 mSolverCounterSat, 708 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 708 IncrementalHoareTripleChecker+Valid, 2568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-08 01:52:32,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 1936 Invalid, 3276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [708 Valid, 2568 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-08 01:52:32,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24028 states. [2025-03-08 01:52:32,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24028 to 23998. [2025-03-08 01:52:32,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23998 states, 23997 states have (on average 1.1474767679293245) internal successors, (27536), 23997 states have internal predecessors, (27536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:32,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23998 states to 23998 states and 27536 transitions. [2025-03-08 01:52:32,525 INFO L78 Accepts]: Start accepts. Automaton has 23998 states and 27536 transitions. Word has length 225 [2025-03-08 01:52:32,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:52:32,526 INFO L471 AbstractCegarLoop]: Abstraction has 23998 states and 27536 transitions. [2025-03-08 01:52:32,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:32,526 INFO L276 IsEmpty]: Start isEmpty. Operand 23998 states and 27536 transitions. [2025-03-08 01:52:32,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2025-03-08 01:52:32,534 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:52:32,535 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:52:32,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 01:52:32,535 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:52:32,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:52:32,536 INFO L85 PathProgramCache]: Analyzing trace with hash -354744961, now seen corresponding path program 1 times [2025-03-08 01:52:32,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:52:32,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988849719] [2025-03-08 01:52:32,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:32,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:52:32,568 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 254 statements into 1 equivalence classes. [2025-03-08 01:52:32,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 254 of 254 statements. [2025-03-08 01:52:32,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:32,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:32,735 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2025-03-08 01:52:32,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:52:32,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988849719] [2025-03-08 01:52:32,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988849719] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:52:32,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:52:32,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:52:32,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682932282] [2025-03-08 01:52:32,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:52:32,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:52:32,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:52:32,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:52:32,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:32,737 INFO L87 Difference]: Start difference. First operand 23998 states and 27536 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:35,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:52:35,383 INFO L93 Difference]: Finished difference Result 59826 states and 69634 transitions. [2025-03-08 01:52:35,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:52:35,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 254 [2025-03-08 01:52:35,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:52:35,429 INFO L225 Difference]: With dead ends: 59826 [2025-03-08 01:52:35,429 INFO L226 Difference]: Without dead ends: 36617 [2025-03-08 01:52:35,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:35,449 INFO L435 NwaCegarLoop]: 955 mSDtfsCounter, 855 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2445 mSolverCounterSat, 783 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 3228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 783 IncrementalHoareTripleChecker+Valid, 2445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-08 01:52:35,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 1097 Invalid, 3228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [783 Valid, 2445 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-08 01:52:35,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36617 states. [2025-03-08 01:52:35,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36617 to 35022. [2025-03-08 01:52:35,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35022 states, 35021 states have (on average 1.1220125067816453) internal successors, (39294), 35021 states have internal predecessors, (39294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:35,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35022 states to 35022 states and 39294 transitions. [2025-03-08 01:52:35,803 INFO L78 Accepts]: Start accepts. Automaton has 35022 states and 39294 transitions. Word has length 254 [2025-03-08 01:52:35,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:52:35,806 INFO L471 AbstractCegarLoop]: Abstraction has 35022 states and 39294 transitions. [2025-03-08 01:52:35,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:35,807 INFO L276 IsEmpty]: Start isEmpty. Operand 35022 states and 39294 transitions. [2025-03-08 01:52:35,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2025-03-08 01:52:35,809 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:52:35,810 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:52:35,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 01:52:35,810 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:52:35,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:52:35,811 INFO L85 PathProgramCache]: Analyzing trace with hash -860303586, now seen corresponding path program 1 times [2025-03-08 01:52:35,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:52:35,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949460889] [2025-03-08 01:52:35,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:35,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:52:35,829 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 254 statements into 1 equivalence classes. [2025-03-08 01:52:35,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 254 of 254 statements. [2025-03-08 01:52:35,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:35,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:36,128 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2025-03-08 01:52:36,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:52:36,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949460889] [2025-03-08 01:52:36,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949460889] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:52:36,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:52:36,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:52:36,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887317040] [2025-03-08 01:52:36,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:52:36,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:52:36,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:52:36,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:52:36,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:36,133 INFO L87 Difference]: Start difference. First operand 35022 states and 39294 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:38,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:52:38,956 INFO L93 Difference]: Finished difference Result 80263 states and 91174 transitions. [2025-03-08 01:52:38,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:52:38,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 254 [2025-03-08 01:52:38,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:52:39,012 INFO L225 Difference]: With dead ends: 80263 [2025-03-08 01:52:39,012 INFO L226 Difference]: Without dead ends: 46030 [2025-03-08 01:52:39,030 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:39,031 INFO L435 NwaCegarLoop]: 1437 mSDtfsCounter, 1141 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 766 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 3150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 766 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-08 01:52:39,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 1521 Invalid, 3150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [766 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-08 01:52:39,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46030 states. [2025-03-08 01:52:39,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46030 to 46029. [2025-03-08 01:52:39,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46029 states, 46028 states have (on average 1.113235421917094) internal successors, (51240), 46028 states have internal predecessors, (51240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:39,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46029 states to 46029 states and 51240 transitions. [2025-03-08 01:52:39,479 INFO L78 Accepts]: Start accepts. Automaton has 46029 states and 51240 transitions. Word has length 254 [2025-03-08 01:52:39,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:52:39,480 INFO L471 AbstractCegarLoop]: Abstraction has 46029 states and 51240 transitions. [2025-03-08 01:52:39,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:39,480 INFO L276 IsEmpty]: Start isEmpty. Operand 46029 states and 51240 transitions. [2025-03-08 01:52:39,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2025-03-08 01:52:39,486 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:52:39,486 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:52:39,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 01:52:39,486 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:52:39,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:52:39,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1359376203, now seen corresponding path program 1 times [2025-03-08 01:52:39,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:52:39,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859735627] [2025-03-08 01:52:39,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:39,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:52:39,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 361 statements into 1 equivalence classes. [2025-03-08 01:52:39,522 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 361 of 361 statements. [2025-03-08 01:52:39,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:39,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:39,684 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 412 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2025-03-08 01:52:39,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:52:39,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859735627] [2025-03-08 01:52:39,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859735627] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:52:39,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:52:39,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:52:39,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135590967] [2025-03-08 01:52:39,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:52:39,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 01:52:39,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:52:39,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 01:52:39,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 01:52:39,686 INFO L87 Difference]: Start difference. First operand 46029 states and 51240 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:44,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:52:44,686 INFO L93 Difference]: Finished difference Result 126858 states and 140823 transitions. [2025-03-08 01:52:44,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 01:52:44,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 361 [2025-03-08 01:52:44,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:52:44,764 INFO L225 Difference]: With dead ends: 126858 [2025-03-08 01:52:44,764 INFO L226 Difference]: Without dead ends: 81618 [2025-03-08 01:52:44,780 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 01:52:44,780 INFO L435 NwaCegarLoop]: 618 mSDtfsCounter, 1682 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 5883 mSolverCounterSat, 1001 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1682 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 6884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1001 IncrementalHoareTripleChecker+Valid, 5883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2025-03-08 01:52:44,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1682 Valid, 802 Invalid, 6884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1001 Valid, 5883 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2025-03-08 01:52:44,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81618 states. [2025-03-08 01:52:45,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81618 to 59420. [2025-03-08 01:52:45,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59420 states, 59419 states have (on average 1.0987226308083273) internal successors, (65285), 59419 states have internal predecessors, (65285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:45,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59420 states to 59420 states and 65285 transitions. [2025-03-08 01:52:45,474 INFO L78 Accepts]: Start accepts. Automaton has 59420 states and 65285 transitions. Word has length 361 [2025-03-08 01:52:45,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:52:45,474 INFO L471 AbstractCegarLoop]: Abstraction has 59420 states and 65285 transitions. [2025-03-08 01:52:45,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:45,479 INFO L276 IsEmpty]: Start isEmpty. Operand 59420 states and 65285 transitions. [2025-03-08 01:52:45,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2025-03-08 01:52:45,485 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:52:45,485 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:52:45,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 01:52:45,485 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:52:45,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:52:45,490 INFO L85 PathProgramCache]: Analyzing trace with hash -965617487, now seen corresponding path program 1 times [2025-03-08 01:52:45,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:52:45,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417288807] [2025-03-08 01:52:45,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:45,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:52:45,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 374 statements into 1 equivalence classes. [2025-03-08 01:52:45,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 374 of 374 statements. [2025-03-08 01:52:45,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:45,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:45,916 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2025-03-08 01:52:45,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:52:45,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417288807] [2025-03-08 01:52:45,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417288807] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:52:45,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:52:45,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:52:45,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660431058] [2025-03-08 01:52:45,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:52:45,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:52:45,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:52:45,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:52:45,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:45,922 INFO L87 Difference]: Start difference. First operand 59420 states and 65285 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:48,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:52:48,725 INFO L93 Difference]: Finished difference Result 134579 states and 148453 transitions. [2025-03-08 01:52:48,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:52:48,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2025-03-08 01:52:48,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:52:48,800 INFO L225 Difference]: With dead ends: 134579 [2025-03-08 01:52:48,800 INFO L226 Difference]: Without dead ends: 75948 [2025-03-08 01:52:48,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:48,829 INFO L435 NwaCegarLoop]: 747 mSDtfsCounter, 815 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 898 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 898 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-08 01:52:48,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 828 Invalid, 3298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [898 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-08 01:52:48,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75948 states. [2025-03-08 01:52:49,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75948 to 74362. [2025-03-08 01:52:49,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74362 states, 74361 states have (on average 1.0903027124433506) internal successors, (81076), 74361 states have internal predecessors, (81076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:49,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74362 states to 74362 states and 81076 transitions. [2025-03-08 01:52:49,440 INFO L78 Accepts]: Start accepts. Automaton has 74362 states and 81076 transitions. Word has length 374 [2025-03-08 01:52:49,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:52:49,441 INFO L471 AbstractCegarLoop]: Abstraction has 74362 states and 81076 transitions. [2025-03-08 01:52:49,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:49,441 INFO L276 IsEmpty]: Start isEmpty. Operand 74362 states and 81076 transitions. [2025-03-08 01:52:49,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2025-03-08 01:52:49,445 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:52:49,445 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:52:49,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 01:52:49,445 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:52:49,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:52:49,445 INFO L85 PathProgramCache]: Analyzing trace with hash -744585530, now seen corresponding path program 1 times [2025-03-08 01:52:49,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:52:49,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318599639] [2025-03-08 01:52:49,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:49,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:52:49,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 404 statements into 1 equivalence classes. [2025-03-08 01:52:49,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 404 of 404 statements. [2025-03-08 01:52:49,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:49,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:50,736 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 319 proven. 113 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2025-03-08 01:52:50,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:52:50,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318599639] [2025-03-08 01:52:50,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318599639] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 01:52:50,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268317400] [2025-03-08 01:52:50,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:50,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 01:52:50,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 01:52:50,741 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 01:52:50,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 01:52:50,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 404 statements into 1 equivalence classes. [2025-03-08 01:52:50,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 404 of 404 statements. [2025-03-08 01:52:50,865 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:50,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:50,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 01:52:50,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 01:52:50,925 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2025-03-08 01:52:50,925 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 01:52:50,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268317400] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:52:50,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 01:52:50,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2025-03-08 01:52:50,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117717640] [2025-03-08 01:52:50,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:52:50,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:52:50,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:52:50,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:52:50,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-08 01:52:50,927 INFO L87 Difference]: Start difference. First operand 74362 states and 81076 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:53,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:52:53,482 INFO L93 Difference]: Finished difference Result 149506 states and 162941 transitions. [2025-03-08 01:52:53,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:52:53,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 404 [2025-03-08 01:52:53,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:52:53,564 INFO L225 Difference]: With dead ends: 149506 [2025-03-08 01:52:53,565 INFO L226 Difference]: Without dead ends: 75933 [2025-03-08 01:52:53,601 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-08 01:52:53,601 INFO L435 NwaCegarLoop]: 1381 mSDtfsCounter, 1022 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 3059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-08 01:52:53,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 1461 Invalid, 3059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-08 01:52:53,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75933 states. [2025-03-08 01:52:54,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75933 to 74348. [2025-03-08 01:52:54,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74348 states, 74347 states have (on average 1.0644410668890474) internal successors, (79138), 74347 states have internal predecessors, (79138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:54,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74348 states to 74348 states and 79138 transitions. [2025-03-08 01:52:54,521 INFO L78 Accepts]: Start accepts. Automaton has 74348 states and 79138 transitions. Word has length 404 [2025-03-08 01:52:54,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:52:54,522 INFO L471 AbstractCegarLoop]: Abstraction has 74348 states and 79138 transitions. [2025-03-08 01:52:54,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:54,522 INFO L276 IsEmpty]: Start isEmpty. Operand 74348 states and 79138 transitions. [2025-03-08 01:52:54,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2025-03-08 01:52:54,533 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:52:54,533 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:52:54,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 01:52:54,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-08 01:52:54,734 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:52:54,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:52:54,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1495274669, now seen corresponding path program 1 times [2025-03-08 01:52:54,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:52:54,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109588249] [2025-03-08 01:52:54,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:54,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:52:54,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 486 statements into 1 equivalence classes. [2025-03-08 01:52:54,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 486 of 486 statements. [2025-03-08 01:52:54,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:54,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2025-03-08 01:52:55,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:52:55,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109588249] [2025-03-08 01:52:55,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109588249] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:52:55,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:52:55,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:52:55,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782907919] [2025-03-08 01:52:55,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:52:55,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:52:55,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:52:55,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:52:55,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:55,241 INFO L87 Difference]: Start difference. First operand 74348 states and 79138 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:57,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:52:57,770 INFO L93 Difference]: Finished difference Result 162856 states and 173866 transitions. [2025-03-08 01:52:57,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:52:57,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 486 [2025-03-08 01:52:57,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:52:57,875 INFO L225 Difference]: With dead ends: 162856 [2025-03-08 01:52:57,876 INFO L226 Difference]: Without dead ends: 87723 [2025-03-08 01:52:57,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:57,925 INFO L435 NwaCegarLoop]: 1682 mSDtfsCounter, 695 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2476 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 2476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-08 01:52:57,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 1812 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 2476 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-08 01:52:57,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87723 states. [2025-03-08 01:52:58,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87723 to 87709. [2025-03-08 01:52:58,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87709 states, 87708 states have (on average 1.0566766999589547) internal successors, (92679), 87708 states have internal predecessors, (92679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:58,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87709 states to 87709 states and 92679 transitions. [2025-03-08 01:52:58,932 INFO L78 Accepts]: Start accepts. Automaton has 87709 states and 92679 transitions. Word has length 486 [2025-03-08 01:52:58,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:52:58,933 INFO L471 AbstractCegarLoop]: Abstraction has 87709 states and 92679 transitions. [2025-03-08 01:52:58,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:58,933 INFO L276 IsEmpty]: Start isEmpty. Operand 87709 states and 92679 transitions. [2025-03-08 01:52:58,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2025-03-08 01:52:58,945 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:52:58,945 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:52:58,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 01:52:58,945 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:52:58,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:52:58,946 INFO L85 PathProgramCache]: Analyzing trace with hash -845130655, now seen corresponding path program 1 times [2025-03-08 01:52:58,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:52:58,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3070370] [2025-03-08 01:52:58,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:58,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:52:58,994 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 509 statements into 1 equivalence classes. [2025-03-08 01:52:59,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 509 of 509 statements. [2025-03-08 01:52:59,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:59,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:53:00,118 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 259 proven. 113 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-08 01:53:00,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:53:00,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3070370] [2025-03-08 01:53:00,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3070370] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 01:53:00,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858494117] [2025-03-08 01:53:00,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:53:00,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 01:53:00,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 01:53:00,122 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 01:53:00,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 01:53:00,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 509 statements into 1 equivalence classes. [2025-03-08 01:53:00,235 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 509 of 509 statements. [2025-03-08 01:53:00,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:53:00,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:53:00,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 01:53:00,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 01:53:00,267 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2025-03-08 01:53:00,268 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 01:53:00,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858494117] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:53:00,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 01:53:00,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2025-03-08 01:53:00,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828580658] [2025-03-08 01:53:00,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:53:00,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:53:00,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:53:00,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:53:00,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 01:53:00,271 INFO L87 Difference]: Start difference. First operand 87709 states and 92679 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:53:03,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:53:03,195 INFO L93 Difference]: Finished difference Result 201448 states and 213077 transitions. [2025-03-08 01:53:03,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:53:03,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 509 [2025-03-08 01:53:03,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:53:03,324 INFO L225 Difference]: With dead ends: 201448 [2025-03-08 01:53:03,324 INFO L226 Difference]: Without dead ends: 114528 [2025-03-08 01:53:03,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 01:53:03,380 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 1000 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 2698 mSolverCounterSat, 850 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 3548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 850 IncrementalHoareTripleChecker+Valid, 2698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-08 01:53:03,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 473 Invalid, 3548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [850 Valid, 2698 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-08 01:53:03,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114528 states. [2025-03-08 01:53:04,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114528 to 111321. [2025-03-08 01:53:04,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111321 states, 111320 states have (on average 1.0578781890046711) internal successors, (117763), 111320 states have internal predecessors, (117763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:53:04,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111321 states to 111321 states and 117763 transitions. [2025-03-08 01:53:04,722 INFO L78 Accepts]: Start accepts. Automaton has 111321 states and 117763 transitions. Word has length 509 [2025-03-08 01:53:04,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:53:04,722 INFO L471 AbstractCegarLoop]: Abstraction has 111321 states and 117763 transitions. [2025-03-08 01:53:04,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:53:04,722 INFO L276 IsEmpty]: Start isEmpty. Operand 111321 states and 117763 transitions. [2025-03-08 01:53:04,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2025-03-08 01:53:04,734 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:53:04,734 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:53:04,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 01:53:04,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-08 01:53:04,935 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:53:04,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:53:04,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1196967571, now seen corresponding path program 1 times [2025-03-08 01:53:04,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:53:04,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295274728] [2025-03-08 01:53:04,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:53:04,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:53:04,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 551 statements into 1 equivalence classes. [2025-03-08 01:53:04,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 551 of 551 statements. [2025-03-08 01:53:04,981 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:53:04,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:53:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 643 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2025-03-08 01:53:05,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:53:05,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295274728] [2025-03-08 01:53:05,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295274728] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:53:05,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:53:05,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:53:05,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045450366] [2025-03-08 01:53:05,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:53:05,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:53:05,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:53:05,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:53:05,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:53:05,154 INFO L87 Difference]: Start difference. First operand 111321 states and 117763 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:53:08,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:53:08,260 INFO L93 Difference]: Finished difference Result 222646 states and 235578 transitions. [2025-03-08 01:53:08,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:53:08,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 551 [2025-03-08 01:53:08,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:53:08,393 INFO L225 Difference]: With dead ends: 222646 [2025-03-08 01:53:08,394 INFO L226 Difference]: Without dead ends: 112114 [2025-03-08 01:53:08,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:53:08,459 INFO L435 NwaCegarLoop]: 1737 mSDtfsCounter, 722 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 2490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-08 01:53:08,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1862 Invalid, 2490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-08 01:53:08,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112114 states. [2025-03-08 01:53:09,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112114 to 112109. [2025-03-08 01:53:09,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112109 states, 112108 states have (on average 1.0578192457273343) internal successors, (118590), 112108 states have internal predecessors, (118590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:53:09,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112109 states to 112109 states and 118590 transitions. [2025-03-08 01:53:09,707 INFO L78 Accepts]: Start accepts. Automaton has 112109 states and 118590 transitions. Word has length 551 [2025-03-08 01:53:09,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:53:09,707 INFO L471 AbstractCegarLoop]: Abstraction has 112109 states and 118590 transitions. [2025-03-08 01:53:09,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:53:09,708 INFO L276 IsEmpty]: Start isEmpty. Operand 112109 states and 118590 transitions. [2025-03-08 01:53:09,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2025-03-08 01:53:09,719 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:53:09,720 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:53:09,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 01:53:09,720 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:53:09,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:53:09,720 INFO L85 PathProgramCache]: Analyzing trace with hash 231623036, now seen corresponding path program 1 times [2025-03-08 01:53:09,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:53:09,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111007806] [2025-03-08 01:53:09,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:53:09,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:53:09,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 557 statements into 1 equivalence classes. [2025-03-08 01:53:09,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 557 of 557 statements. [2025-03-08 01:53:09,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:53:09,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:53:10,186 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 426 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-08 01:53:10,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:53:10,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111007806] [2025-03-08 01:53:10,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111007806] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:53:10,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:53:10,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:53:10,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518585781] [2025-03-08 01:53:10,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:53:10,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 01:53:10,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:53:10,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 01:53:10,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 01:53:10,188 INFO L87 Difference]: Start difference. First operand 112109 states and 118590 transitions. Second operand has 4 states, 4 states have (on average 136.75) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:53:13,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:53:13,445 INFO L93 Difference]: Finished difference Result 232087 states and 245400 transitions. [2025-03-08 01:53:13,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 01:53:13,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 136.75) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 557 [2025-03-08 01:53:13,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:53:13,580 INFO L225 Difference]: With dead ends: 232087 [2025-03-08 01:53:13,580 INFO L226 Difference]: Without dead ends: 118405 [2025-03-08 01:53:13,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 01:53:13,634 INFO L435 NwaCegarLoop]: 740 mSDtfsCounter, 1350 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 4522 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 4872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 4522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-08 01:53:13,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 1007 Invalid, 4872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 4522 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-08 01:53:13,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118405 states. [2025-03-08 01:53:14,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118405 to 116830. [2025-03-08 01:53:14,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116830 states, 116829 states have (on average 1.0530005392496726) internal successors, (123021), 116829 states have internal predecessors, (123021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:53:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116830 states to 116830 states and 123021 transitions. [2025-03-08 01:53:14,858 INFO L78 Accepts]: Start accepts. Automaton has 116830 states and 123021 transitions. Word has length 557 [2025-03-08 01:53:14,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:53:14,858 INFO L471 AbstractCegarLoop]: Abstraction has 116830 states and 123021 transitions. [2025-03-08 01:53:14,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.75) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:53:14,859 INFO L276 IsEmpty]: Start isEmpty. Operand 116830 states and 123021 transitions. [2025-03-08 01:53:14,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2025-03-08 01:53:14,869 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:53:14,870 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:53:14,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 01:53:14,870 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:53:14,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:53:14,870 INFO L85 PathProgramCache]: Analyzing trace with hash 86491709, now seen corresponding path program 1 times [2025-03-08 01:53:14,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:53:14,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355888049] [2025-03-08 01:53:14,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:53:14,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:53:14,896 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 576 statements into 1 equivalence classes. [2025-03-08 01:53:15,105 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 576 of 576 statements. [2025-03-08 01:53:15,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:53:15,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:53:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 987 backedges. 453 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2025-03-08 01:53:15,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:53:15,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355888049] [2025-03-08 01:53:15,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355888049] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:53:15,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:53:15,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 01:53:15,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3322930] [2025-03-08 01:53:15,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:53:15,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:53:15,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:53:15,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:53:15,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:53:15,216 INFO L87 Difference]: Start difference. First operand 116830 states and 123021 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 2 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:53:16,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:53:16,757 INFO L93 Difference]: Finished difference Result 232069 states and 244332 transitions. [2025-03-08 01:53:16,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:53:16,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 2 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 576 [2025-03-08 01:53:16,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:53:16,876 INFO L225 Difference]: With dead ends: 232069 [2025-03-08 01:53:16,877 INFO L226 Difference]: Without dead ends: 116028 [2025-03-08 01:53:16,932 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:53:16,932 INFO L435 NwaCegarLoop]: 262 mSDtfsCounter, 1543 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-08 01:53:16,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 262 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1428 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-08 01:53:17,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116028 states. [2025-03-08 01:53:17,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116028 to 116027. [2025-03-08 01:53:17,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116027 states, 116026 states have (on average 1.0522382914174409) internal successors, (122087), 116026 states have internal predecessors, (122087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:53:18,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116027 states to 116027 states and 122087 transitions. [2025-03-08 01:53:18,084 INFO L78 Accepts]: Start accepts. Automaton has 116027 states and 122087 transitions. Word has length 576 [2025-03-08 01:53:18,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:53:18,084 INFO L471 AbstractCegarLoop]: Abstraction has 116027 states and 122087 transitions. [2025-03-08 01:53:18,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 2 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:53:18,084 INFO L276 IsEmpty]: Start isEmpty. Operand 116027 states and 122087 transitions. [2025-03-08 01:53:18,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2025-03-08 01:53:18,094 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:53:18,094 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:53:18,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 01:53:18,094 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:53:18,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:53:18,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1960072537, now seen corresponding path program 1 times [2025-03-08 01:53:18,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:53:18,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192552383] [2025-03-08 01:53:18,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:53:18,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:53:18,339 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 581 statements into 1 equivalence classes. [2025-03-08 01:53:18,366 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 581 of 581 statements. [2025-03-08 01:53:18,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:53:18,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:53:18,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 471 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2025-03-08 01:53:18,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:53:18,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192552383] [2025-03-08 01:53:18,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192552383] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:53:18,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:53:18,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:53:18,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725998804] [2025-03-08 01:53:18,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:53:18,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:53:18,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:53:18,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:53:18,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:53:18,828 INFO L87 Difference]: Start difference. First operand 116027 states and 122087 transitions. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:53:21,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:53:21,358 INFO L93 Difference]: Finished difference Result 232057 states and 244180 transitions. [2025-03-08 01:53:21,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:53:21,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 581 [2025-03-08 01:53:21,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:53:21,496 INFO L225 Difference]: With dead ends: 232057 [2025-03-08 01:53:21,497 INFO L226 Difference]: Without dead ends: 116819 [2025-03-08 01:53:21,567 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:53:21,568 INFO L435 NwaCegarLoop]: 1596 mSDtfsCounter, 715 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 2722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-08 01:53:21,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 1717 Invalid, 2722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 2349 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-08 01:53:21,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116819 states. [2025-03-08 01:53:22,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116819 to 116025. [2025-03-08 01:53:22,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116025 states, 116024 states have (on average 1.04192236089085) internal successors, (120888), 116024 states have internal predecessors, (120888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:53:22,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116025 states to 116025 states and 120888 transitions. [2025-03-08 01:53:22,750 INFO L78 Accepts]: Start accepts. Automaton has 116025 states and 120888 transitions. Word has length 581 [2025-03-08 01:53:22,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:53:22,751 INFO L471 AbstractCegarLoop]: Abstraction has 116025 states and 120888 transitions. [2025-03-08 01:53:22,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:53:22,751 INFO L276 IsEmpty]: Start isEmpty. Operand 116025 states and 120888 transitions. [2025-03-08 01:53:22,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2025-03-08 01:53:22,759 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:53:22,760 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:53:22,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 01:53:22,760 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:53:22,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:53:22,760 INFO L85 PathProgramCache]: Analyzing trace with hash -939981198, now seen corresponding path program 1 times [2025-03-08 01:53:22,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:53:22,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586388844] [2025-03-08 01:53:22,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:53:22,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:53:22,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 590 statements into 1 equivalence classes. [2025-03-08 01:53:22,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 590 of 590 statements. [2025-03-08 01:53:22,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:53:22,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:53:22,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1036 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 982 trivial. 0 not checked. [2025-03-08 01:53:22,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:53:22,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586388844] [2025-03-08 01:53:22,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586388844] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:53:22,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:53:22,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:53:22,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277572926] [2025-03-08 01:53:22,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:53:22,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:53:22,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:53:22,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:53:22,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:53:22,918 INFO L87 Difference]: Start difference. First operand 116025 states and 120888 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)