./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label53.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_label53.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 644f34509b30309e4697abb994dc1df837b8ceecc87fd74e76756a410c51bce5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 01:55:05,649 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 01:55:05,702 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 01:55:05,707 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 01:55:05,708 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 01:55:05,724 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 01:55:05,725 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 01:55:05,725 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 01:55:05,725 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 01:55:05,725 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 01:55:05,725 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 01:55:05,726 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 01:55:05,726 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 01:55:05,726 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 01:55:05,726 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 01:55:05,726 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 01:55:05,727 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 01:55:05,727 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 01:55:05,727 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 01:55:05,727 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 01:55:05,727 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 01:55:05,728 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 01:55:05,728 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 01:55:05,728 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 01:55:05,728 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 01:55:05,728 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 01:55:05,728 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 01:55:05,728 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 01:55:05,728 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 01:55:05,728 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 01:55:05,728 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 01:55:05,728 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 01:55:05,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 01:55:05,728 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 01:55:05,728 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 01:55:05,729 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 01:55:05,729 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 01:55:05,729 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 01:55:05,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 01:55:05,729 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 01:55:05,729 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 01:55:05,729 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 01:55:05,729 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 01:55:05,729 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 -> 644f34509b30309e4697abb994dc1df837b8ceecc87fd74e76756a410c51bce5 [2025-03-08 01:55:05,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 01:55:05,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 01:55:05,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 01:55:05,951 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 01:55:05,952 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 01:55:05,952 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label53.c [2025-03-08 01:55:07,046 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1b782204/a26acb750f914d2ebc29f0f8dbb87bb2/FLAG2e9c2dbad [2025-03-08 01:55:07,551 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 01:55:07,552 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label53.c [2025-03-08 01:55:07,591 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1b782204/a26acb750f914d2ebc29f0f8dbb87bb2/FLAG2e9c2dbad [2025-03-08 01:55:07,606 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1b782204/a26acb750f914d2ebc29f0f8dbb87bb2 [2025-03-08 01:55:07,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 01:55:07,610 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 01:55:07,611 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 01:55:07,611 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 01:55:07,614 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 01:55:07,615 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 01:55:07" (1/1) ... [2025-03-08 01:55:07,615 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@341ea5ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:55:07, skipping insertion in model container [2025-03-08 01:55:07,615 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 01:55:07" (1/1) ... [2025-03-08 01:55:07,703 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 01:55:07,902 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_label53.c[4658,4671] [2025-03-08 01:55:08,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 01:55:08,463 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 01:55:08,475 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_label53.c[4658,4671] [2025-03-08 01:55:08,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 01:55:08,800 INFO L204 MainTranslator]: Completed translation [2025-03-08 01:55:08,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:55:08 WrapperNode [2025-03-08 01:55:08,802 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 01:55:08,803 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 01:55:08,803 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 01:55:08,803 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 01:55:08,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:55:08" (1/1) ... [2025-03-08 01:55:08,856 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:55:08" (1/1) ... [2025-03-08 01:55:09,277 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5584 [2025-03-08 01:55:09,277 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 01:55:09,278 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 01:55:09,278 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 01:55:09,278 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 01:55:09,285 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:55:08" (1/1) ... [2025-03-08 01:55:09,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:55:08" (1/1) ... [2025-03-08 01:55:09,436 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:55:08" (1/1) ... [2025-03-08 01:55:09,587 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 01:55:09,590 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:55:08" (1/1) ... [2025-03-08 01:55:09,590 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:55:08" (1/1) ... [2025-03-08 01:55:09,743 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:55:08" (1/1) ... [2025-03-08 01:55:09,767 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:55:08" (1/1) ... [2025-03-08 01:55:09,832 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:55:08" (1/1) ... [2025-03-08 01:55:09,856 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:55:08" (1/1) ... [2025-03-08 01:55:09,905 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 01:55:09,906 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 01:55:09,906 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 01:55:09,907 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 01:55:09,908 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:55:08" (1/1) ... [2025-03-08 01:55:09,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 01:55:09,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 01:55:09,932 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 01:55:09,934 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 01:55:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 01:55:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 01:55:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 01:55:09,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 01:55:10,009 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 01:55:10,012 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 01:55:14,005 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1894: havoc calculate_output_#t~ret9#1; [2025-03-08 01:55:14,005 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3629: havoc calculate_output2_#t~ret10#1; [2025-03-08 01:55:14,005 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L5351: havoc calculate_output3_#t~ret11#1; [2025-03-08 01:55:14,129 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2025-03-08 01:55:14,130 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 01:55:14,166 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 01:55:14,166 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 01:55:14,167 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 01:55:14 BoogieIcfgContainer [2025-03-08 01:55:14,167 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 01:55:14,168 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 01:55:14,168 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 01:55:14,172 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 01:55:14,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 01:55:07" (1/3) ... [2025-03-08 01:55:14,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3786fec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 01:55:14, skipping insertion in model container [2025-03-08 01:55:14,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:55:08" (2/3) ... [2025-03-08 01:55:14,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3786fec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 01:55:14, skipping insertion in model container [2025-03-08 01:55:14,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 01:55:14" (3/3) ... [2025-03-08 01:55:14,175 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem13_label53.c [2025-03-08 01:55:14,186 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 01:55:14,187 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem13_label53.c that has 1 procedures, 1098 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 01:55:14,253 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 01:55:14,264 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;@6594bdba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 01:55:14,264 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 01:55:14,269 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 01:55:14,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-03-08 01:55:14,273 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:55:14,273 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:55:14,273 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:55:14,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:55:14,277 INFO L85 PathProgramCache]: Analyzing trace with hash -573801563, now seen corresponding path program 1 times [2025-03-08 01:55:14,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:55:14,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66185515] [2025-03-08 01:55:14,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:55:14,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:55:14,335 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-08 01:55:14,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-08 01:55:14,371 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:55:14,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:55:14,517 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 01:55:14,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:55:14,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66185515] [2025-03-08 01:55:14,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66185515] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:55:14,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:55:14,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 01:55:14,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670505152] [2025-03-08 01:55:14,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:55:14,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:55:14,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:55:14,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:55:14,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:55:14,540 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 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states 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 01:55:18,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:55:18,104 INFO L93 Difference]: Finished difference Result 3121 states and 5801 transitions. [2025-03-08 01:55:18,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:55:18,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2025-03-08 01:55:18,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:55:18,123 INFO L225 Difference]: With dead ends: 3121 [2025-03-08 01:55:18,123 INFO L226 Difference]: Without dead ends: 1944 [2025-03-08 01:55:18,127 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 01:55:18,129 INFO L435 NwaCegarLoop]: 434 mSDtfsCounter, 958 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 3124 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 3701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 3124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2025-03-08 01:55:18,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 571 Invalid, 3701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [577 Valid, 3124 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2025-03-08 01:55:18,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2025-03-08 01:55:18,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1873. [2025-03-08 01:55:18,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1872 states have (on average 1.7393162393162394) internal successors, (3256), 1872 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states 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 01:55:18,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 3256 transitions. [2025-03-08 01:55:18,215 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 3256 transitions. Word has length 31 [2025-03-08 01:55:18,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:55:18,215 INFO L471 AbstractCegarLoop]: Abstraction has 1873 states and 3256 transitions. [2025-03-08 01:55:18,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states 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 01:55:18,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 3256 transitions. [2025-03-08 01:55:18,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-08 01:55:18,219 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:55:18,219 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-03-08 01:55:18,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 01:55:18,220 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:55:18,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:55:18,220 INFO L85 PathProgramCache]: Analyzing trace with hash -799660947, now seen corresponding path program 1 times [2025-03-08 01:55:18,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:55:18,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516196784] [2025-03-08 01:55:18,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:55:18,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:55:18,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-08 01:55:18,271 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-08 01:55:18,271 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:55:18,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:55:18,593 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 01:55:18,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:55:18,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516196784] [2025-03-08 01:55:18,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516196784] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:55:18,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:55:18,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 01:55:18,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774853299] [2025-03-08 01:55:18,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:55:18,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:55:18,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:55:18,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:55:18,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:55:18,597 INFO L87 Difference]: Start difference. First operand 1873 states and 3256 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 01:55:21,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:55:21,502 INFO L93 Difference]: Finished difference Result 4604 states and 7964 transitions. [2025-03-08 01:55:21,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:55:21,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2025-03-08 01:55:21,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:55:21,511 INFO L225 Difference]: With dead ends: 4604 [2025-03-08 01:55:21,511 INFO L226 Difference]: Without dead ends: 2733 [2025-03-08 01:55:21,513 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 01:55:21,513 INFO L435 NwaCegarLoop]: 602 mSDtfsCounter, 815 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 3016 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 3180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 3016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-08 01:55:21,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 738 Invalid, 3180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 3016 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-08 01:55:21,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2025-03-08 01:55:21,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 2670. [2025-03-08 01:55:21,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2669 states have (on average 1.6579243162233046) internal successors, (4425), 2669 states have internal predecessors, (4425), 0 states have call successors, (0), 0 states 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 01:55:21,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4425 transitions. [2025-03-08 01:55:21,550 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4425 transitions. Word has length 96 [2025-03-08 01:55:21,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:55:21,551 INFO L471 AbstractCegarLoop]: Abstraction has 2670 states and 4425 transitions. [2025-03-08 01:55:21,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 01:55:21,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4425 transitions. [2025-03-08 01:55:21,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-08 01:55:21,552 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:55:21,552 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-03-08 01:55:21,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 01:55:21,553 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:55:21,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:55:21,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1775143235, now seen corresponding path program 1 times [2025-03-08 01:55:21,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:55:21,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436268458] [2025-03-08 01:55:21,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:55:21,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:55:21,562 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-08 01:55:21,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-08 01:55:21,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:55:21,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:55:21,672 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 01:55:21,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:55:21,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436268458] [2025-03-08 01:55:21,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436268458] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:55:21,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:55:21,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 01:55:21,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312879680] [2025-03-08 01:55:21,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:55:21,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:55:21,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:55:21,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:55:21,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:55:21,675 INFO L87 Difference]: Start difference. First operand 2670 states and 4425 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 01:55:24,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:55:24,114 INFO L93 Difference]: Finished difference Result 7732 states and 12864 transitions. [2025-03-08 01:55:24,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:55:24,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2025-03-08 01:55:24,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:55:24,132 INFO L225 Difference]: With dead ends: 7732 [2025-03-08 01:55:24,132 INFO L226 Difference]: Without dead ends: 5064 [2025-03-08 01:55:24,135 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 01:55:24,138 INFO L435 NwaCegarLoop]: 983 mSDtfsCounter, 870 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 876 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 3255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-08 01:55:24,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 1136 Invalid, 3255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [876 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-08 01:55:24,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5064 states. [2025-03-08 01:55:24,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5064 to 5063. [2025-03-08 01:55:24,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5063 states, 5062 states have (on average 1.454563413670486) internal successors, (7363), 5062 states have internal predecessors, (7363), 0 states have call successors, (0), 0 states 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 01:55:24,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5063 states to 5063 states and 7363 transitions. [2025-03-08 01:55:24,209 INFO L78 Accepts]: Start accepts. Automaton has 5063 states and 7363 transitions. Word has length 97 [2025-03-08 01:55:24,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:55:24,210 INFO L471 AbstractCegarLoop]: Abstraction has 5063 states and 7363 transitions. [2025-03-08 01:55:24,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 01:55:24,210 INFO L276 IsEmpty]: Start isEmpty. Operand 5063 states and 7363 transitions. [2025-03-08 01:55:24,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-03-08 01:55:24,211 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:55:24,211 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-03-08 01:55:24,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 01:55:24,212 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:55:24,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:55:24,212 INFO L85 PathProgramCache]: Analyzing trace with hash 998600247, now seen corresponding path program 1 times [2025-03-08 01:55:24,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:55:24,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880546906] [2025-03-08 01:55:24,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:55:24,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:55:24,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-08 01:55:24,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-08 01:55:24,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:55:24,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:55:24,314 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 01:55:24,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:55:24,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880546906] [2025-03-08 01:55:24,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880546906] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:55:24,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:55:24,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 01:55:24,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346224135] [2025-03-08 01:55:24,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:55:24,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:55:24,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:55:24,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:55:24,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:55:24,317 INFO L87 Difference]: Start difference. First operand 5063 states and 7363 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:55:27,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:55:27,410 INFO L93 Difference]: Finished difference Result 12515 states and 18432 transitions. [2025-03-08 01:55:27,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:55:27,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2025-03-08 01:55:27,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:55:27,428 INFO L225 Difference]: With dead ends: 12515 [2025-03-08 01:55:27,429 INFO L226 Difference]: Without dead ends: 7454 [2025-03-08 01:55:27,434 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 01:55:27,435 INFO L435 NwaCegarLoop]: 1043 mSDtfsCounter, 872 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2662 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 3380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 2662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2025-03-08 01:55:27,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 1177 Invalid, 3380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 2662 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2025-03-08 01:55:27,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7454 states. [2025-03-08 01:55:27,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7454 to 7444. [2025-03-08 01:55:27,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7444 states, 7443 states have (on average 1.336826548434771) internal successors, (9950), 7443 states have internal predecessors, (9950), 0 states have call successors, (0), 0 states 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 01:55:27,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7444 states to 7444 states and 9950 transitions. [2025-03-08 01:55:27,589 INFO L78 Accepts]: Start accepts. Automaton has 7444 states and 9950 transitions. Word has length 100 [2025-03-08 01:55:27,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:55:27,589 INFO L471 AbstractCegarLoop]: Abstraction has 7444 states and 9950 transitions. [2025-03-08 01:55:27,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:55:27,589 INFO L276 IsEmpty]: Start isEmpty. Operand 7444 states and 9950 transitions. [2025-03-08 01:55:27,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-03-08 01:55:27,590 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:55:27,590 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-03-08 01:55:27,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 01:55:27,590 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:55:27,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:55:27,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1934531747, now seen corresponding path program 1 times [2025-03-08 01:55:27,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:55:27,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405254464] [2025-03-08 01:55:27,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:55:27,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:55:27,612 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-08 01:55:27,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-08 01:55:27,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:55:27,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:55:27,741 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 01:55:27,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:55:27,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405254464] [2025-03-08 01:55:27,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405254464] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:55:27,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:55:27,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 01:55:27,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574191187] [2025-03-08 01:55:27,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:55:27,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:55:27,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:55:27,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:55:27,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:55:27,746 INFO L87 Difference]: Start difference. First operand 7444 states and 9950 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:55:30,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:55:30,305 INFO L93 Difference]: Finished difference Result 20424 states and 27781 transitions. [2025-03-08 01:55:30,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:55:30,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2025-03-08 01:55:30,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:55:30,333 INFO L225 Difference]: With dead ends: 20424 [2025-03-08 01:55:30,334 INFO L226 Difference]: Without dead ends: 13769 [2025-03-08 01:55:30,339 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 01:55:30,339 INFO L435 NwaCegarLoop]: 1010 mSDtfsCounter, 805 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2489 mSolverCounterSat, 784 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 784 IncrementalHoareTripleChecker+Valid, 2489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-08 01:55:30,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 1161 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [784 Valid, 2489 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-08 01:55:30,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13769 states. [2025-03-08 01:55:30,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13769 to 12962. [2025-03-08 01:55:30,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12962 states, 12961 states have (on average 1.2383303757426125) internal successors, (16050), 12961 states have internal predecessors, (16050), 0 states have call successors, (0), 0 states 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 01:55:30,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12962 states to 12962 states and 16050 transitions. [2025-03-08 01:55:30,509 INFO L78 Accepts]: Start accepts. Automaton has 12962 states and 16050 transitions. Word has length 104 [2025-03-08 01:55:30,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:55:30,509 INFO L471 AbstractCegarLoop]: Abstraction has 12962 states and 16050 transitions. [2025-03-08 01:55:30,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:55:30,510 INFO L276 IsEmpty]: Start isEmpty. Operand 12962 states and 16050 transitions. [2025-03-08 01:55:30,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-03-08 01:55:30,511 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:55:30,511 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 01:55:30,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 01:55:30,511 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:55:30,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:55:30,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1964513585, now seen corresponding path program 1 times [2025-03-08 01:55:30,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:55:30,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45644671] [2025-03-08 01:55:30,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:55:30,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:55:30,524 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-08 01:55:30,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-08 01:55:30,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:55:30,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:55:30,608 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 01:55:30,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:55:30,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45644671] [2025-03-08 01:55:30,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45644671] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:55:30,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:55:30,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:55:30,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426149163] [2025-03-08 01:55:30,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:55:30,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:55:30,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:55:30,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:55:30,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:55:30,612 INFO L87 Difference]: Start difference. First operand 12962 states and 16050 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 01:55:33,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:55:33,201 INFO L93 Difference]: Finished difference Result 31459 states and 39990 transitions. [2025-03-08 01:55:33,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:55:33,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2025-03-08 01:55:33,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:55:33,235 INFO L225 Difference]: With dead ends: 31459 [2025-03-08 01:55:33,236 INFO L226 Difference]: Without dead ends: 19286 [2025-03-08 01:55:33,247 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 01:55:33,248 INFO L435 NwaCegarLoop]: 746 mSDtfsCounter, 1006 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 1002 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 3397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1002 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-08 01:55:33,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1006 Valid, 837 Invalid, 3397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1002 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-08 01:55:33,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19286 states. [2025-03-08 01:55:33,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19286 to 19274. [2025-03-08 01:55:33,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19274 states, 19273 states have (on average 1.2408550822394022) internal successors, (23915), 19273 states have internal predecessors, (23915), 0 states have call successors, (0), 0 states 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 01:55:33,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19274 states to 19274 states and 23915 transitions. [2025-03-08 01:55:33,627 INFO L78 Accepts]: Start accepts. Automaton has 19274 states and 23915 transitions. Word has length 120 [2025-03-08 01:55:33,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:55:33,628 INFO L471 AbstractCegarLoop]: Abstraction has 19274 states and 23915 transitions. [2025-03-08 01:55:33,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 01:55:33,628 INFO L276 IsEmpty]: Start isEmpty. Operand 19274 states and 23915 transitions. [2025-03-08 01:55:33,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2025-03-08 01:55:33,631 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:55:33,632 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:55:33,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 01:55:33,632 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:55:33,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:55:33,637 INFO L85 PathProgramCache]: Analyzing trace with hash 165513032, now seen corresponding path program 1 times [2025-03-08 01:55:33,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:55:33,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067814119] [2025-03-08 01:55:33,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:55:33,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:55:33,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 223 statements into 1 equivalence classes. [2025-03-08 01:55:33,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 223 of 223 statements. [2025-03-08 01:55:33,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:55:33,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:55:34,034 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-08 01:55:34,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:55:34,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067814119] [2025-03-08 01:55:34,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067814119] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:55:34,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:55:34,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 01:55:34,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353745572] [2025-03-08 01:55:34,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:55:34,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:55:34,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:55:34,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:55:34,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:55:34,037 INFO L87 Difference]: Start difference. First operand 19274 states and 23915 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 01:55:36,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:55:36,333 INFO L93 Difference]: Finished difference Result 37759 states and 47031 transitions. [2025-03-08 01:55:36,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:55:36,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 223 [2025-03-08 01:55:36,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:55:36,374 INFO L225 Difference]: With dead ends: 37759 [2025-03-08 01:55:36,375 INFO L226 Difference]: Without dead ends: 19274 [2025-03-08 01:55:36,391 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 01:55:36,392 INFO L435 NwaCegarLoop]: 1082 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2519 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-08 01:55:36,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1211 Invalid, 2523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2519 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-08 01:55:36,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19274 states. [2025-03-08 01:55:36,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19274 to 19274. [2025-03-08 01:55:36,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19274 states, 19273 states have (on average 1.2405956519483214) internal successors, (23910), 19273 states have internal predecessors, (23910), 0 states have call successors, (0), 0 states 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 01:55:36,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19274 states to 19274 states and 23910 transitions. [2025-03-08 01:55:36,612 INFO L78 Accepts]: Start accepts. Automaton has 19274 states and 23910 transitions. Word has length 223 [2025-03-08 01:55:36,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:55:36,612 INFO L471 AbstractCegarLoop]: Abstraction has 19274 states and 23910 transitions. [2025-03-08 01:55:36,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 01:55:36,613 INFO L276 IsEmpty]: Start isEmpty. Operand 19274 states and 23910 transitions. [2025-03-08 01:55:36,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2025-03-08 01:55:36,615 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:55:36,615 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:55:36,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 01:55:36,616 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:55:36,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:55:36,616 INFO L85 PathProgramCache]: Analyzing trace with hash 932597158, now seen corresponding path program 1 times [2025-03-08 01:55:36,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:55:36,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964953581] [2025-03-08 01:55:36,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:55:36,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:55:36,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 230 statements into 1 equivalence classes. [2025-03-08 01:55:36,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 230 of 230 statements. [2025-03-08 01:55:36,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:55:36,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:55:36,831 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 01:55:36,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:55:36,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964953581] [2025-03-08 01:55:36,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964953581] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:55:36,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:55:36,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:55:36,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725995538] [2025-03-08 01:55:36,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:55:36,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:55:36,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:55:36,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:55:36,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:55:36,832 INFO L87 Difference]: Start difference. First operand 19274 states and 23910 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states 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 01:55:39,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:55:39,526 INFO L93 Difference]: Finished difference Result 44068 states and 54897 transitions. [2025-03-08 01:55:39,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:55:39,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 230 [2025-03-08 01:55:39,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:55:39,592 INFO L225 Difference]: With dead ends: 44068 [2025-03-08 01:55:39,593 INFO L226 Difference]: Without dead ends: 25583 [2025-03-08 01:55:39,605 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 01:55:39,606 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 858 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 3042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-08 01:55:39,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 956 Invalid, 3042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2390 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-08 01:55:39,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25583 states. [2025-03-08 01:55:39,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25583 to 24786. [2025-03-08 01:55:39,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24786 states, 24785 states have (on average 1.230260238047206) internal successors, (30492), 24785 states have internal predecessors, (30492), 0 states have call successors, (0), 0 states 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 01:55:39,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24786 states to 24786 states and 30492 transitions. [2025-03-08 01:55:39,883 INFO L78 Accepts]: Start accepts. Automaton has 24786 states and 30492 transitions. Word has length 230 [2025-03-08 01:55:39,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:55:39,884 INFO L471 AbstractCegarLoop]: Abstraction has 24786 states and 30492 transitions. [2025-03-08 01:55:39,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states 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 01:55:39,885 INFO L276 IsEmpty]: Start isEmpty. Operand 24786 states and 30492 transitions. [2025-03-08 01:55:39,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2025-03-08 01:55:39,893 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:55:39,893 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:55:39,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 01:55:39,894 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:55:39,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:55:39,894 INFO L85 PathProgramCache]: Analyzing trace with hash -649104213, now seen corresponding path program 1 times [2025-03-08 01:55:39,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:55:39,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083200139] [2025-03-08 01:55:39,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:55:39,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:55:39,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 293 statements into 1 equivalence classes. [2025-03-08 01:55:39,944 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 293 of 293 statements. [2025-03-08 01:55:39,944 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:55:39,944 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:55:40,169 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 01:55:40,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:55:40,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083200139] [2025-03-08 01:55:40,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083200139] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:55:40,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:55:40,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:55:40,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976347263] [2025-03-08 01:55:40,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:55:40,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:55:40,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:55:40,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:55:40,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:55:40,171 INFO L87 Difference]: Start difference. First operand 24786 states and 30492 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 01:55:42,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:55:42,866 INFO L93 Difference]: Finished difference Result 49597 states and 61040 transitions. [2025-03-08 01:55:42,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:55:42,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 293 [2025-03-08 01:55:42,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:55:42,996 INFO L225 Difference]: With dead ends: 49597 [2025-03-08 01:55:42,996 INFO L226 Difference]: Without dead ends: 25600 [2025-03-08 01:55:43,013 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 01:55:43,013 INFO L435 NwaCegarLoop]: 1799 mSDtfsCounter, 722 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2560 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 2560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-08 01:55:43,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1942 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 2560 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-08 01:55:43,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25600 states. [2025-03-08 01:55:43,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25600 to 25574. [2025-03-08 01:55:43,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25574 states, 25573 states have (on average 1.2079145974269738) internal successors, (30890), 25573 states have internal predecessors, (30890), 0 states have call successors, (0), 0 states 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 01:55:43,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25574 states to 25574 states and 30890 transitions. [2025-03-08 01:55:43,284 INFO L78 Accepts]: Start accepts. Automaton has 25574 states and 30890 transitions. Word has length 293 [2025-03-08 01:55:43,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:55:43,284 INFO L471 AbstractCegarLoop]: Abstraction has 25574 states and 30890 transitions. [2025-03-08 01:55:43,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 01:55:43,284 INFO L276 IsEmpty]: Start isEmpty. Operand 25574 states and 30890 transitions. [2025-03-08 01:55:43,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2025-03-08 01:55:43,292 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:55:43,292 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:55:43,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 01:55:43,292 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:55:43,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:55:43,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1286707416, now seen corresponding path program 1 times [2025-03-08 01:55:43,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:55:43,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450792268] [2025-03-08 01:55:43,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:55:43,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:55:43,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 319 statements into 1 equivalence classes. [2025-03-08 01:55:43,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 319 of 319 statements. [2025-03-08 01:55:43,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:55:43,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:55:43,514 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 333 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-08 01:55:43,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:55:43,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450792268] [2025-03-08 01:55:43,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450792268] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:55:43,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:55:43,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:55:43,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204209850] [2025-03-08 01:55:43,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:55:43,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 01:55:43,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:55:43,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 01:55:43,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 01:55:43,516 INFO L87 Difference]: Start difference. First operand 25574 states and 30890 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states 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 01:55:48,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:55:48,980 INFO L93 Difference]: Finished difference Result 75756 states and 92428 transitions. [2025-03-08 01:55:48,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 01:55:48,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 319 [2025-03-08 01:55:48,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:55:49,049 INFO L225 Difference]: With dead ends: 75756 [2025-03-08 01:55:49,049 INFO L226 Difference]: Without dead ends: 50971 [2025-03-08 01:55:49,063 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 01:55:49,064 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 1718 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 6388 mSolverCounterSat, 1037 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 7425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1037 IncrementalHoareTripleChecker+Valid, 6388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2025-03-08 01:55:49,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1718 Valid, 1092 Invalid, 7425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1037 Valid, 6388 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2025-03-08 01:55:49,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50971 states. [2025-03-08 01:55:49,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50971 to 50847. [2025-03-08 01:55:49,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50847 states, 50846 states have (on average 1.1909098060811076) internal successors, (60553), 50846 states have internal predecessors, (60553), 0 states have call successors, (0), 0 states 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 01:55:49,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50847 states to 50847 states and 60553 transitions. [2025-03-08 01:55:49,508 INFO L78 Accepts]: Start accepts. Automaton has 50847 states and 60553 transitions. Word has length 319 [2025-03-08 01:55:49,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:55:49,508 INFO L471 AbstractCegarLoop]: Abstraction has 50847 states and 60553 transitions. [2025-03-08 01:55:49,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states 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 01:55:49,508 INFO L276 IsEmpty]: Start isEmpty. Operand 50847 states and 60553 transitions. [2025-03-08 01:55:49,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2025-03-08 01:55:49,511 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:55:49,511 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:49,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 01:55:49,511 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:55:49,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:55:49,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1449733004, now seen corresponding path program 1 times [2025-03-08 01:55:49,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:55:49,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181963565] [2025-03-08 01:55:49,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:55:49,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:55:49,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 322 statements into 1 equivalence classes. [2025-03-08 01:55:49,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 322 of 322 statements. [2025-03-08 01:55:49,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:55:49,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:55:49,783 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2025-03-08 01:55:49,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:55:49,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181963565] [2025-03-08 01:55:49,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181963565] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:55:49,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:55:49,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:55:49,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016078643] [2025-03-08 01:55:49,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:55:49,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:55:49,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:55:49,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:55:49,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:55:49,785 INFO L87 Difference]: Start difference. First operand 50847 states and 60553 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states 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 01:55:53,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:55:53,203 INFO L93 Difference]: Finished difference Result 113502 states and 137223 transitions. [2025-03-08 01:55:53,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:55:53,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 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 322 [2025-03-08 01:55:53,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:55:53,280 INFO L225 Difference]: With dead ends: 113502 [2025-03-08 01:55:53,281 INFO L226 Difference]: Without dead ends: 63444 [2025-03-08 01:55:53,309 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 01:55:53,310 INFO L435 NwaCegarLoop]: 1806 mSDtfsCounter, 834 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2547 mSolverCounterSat, 727 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 3274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 727 IncrementalHoareTripleChecker+Valid, 2547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-08 01:55:53,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 1957 Invalid, 3274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [727 Valid, 2547 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-03-08 01:55:53,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63444 states. [2025-03-08 01:55:53,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63444 to 62650. [2025-03-08 01:55:53,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62650 states, 62649 states have (on average 1.172357100671998) internal successors, (73447), 62649 states have internal predecessors, (73447), 0 states have call successors, (0), 0 states 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 01:55:53,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62650 states to 62650 states and 73447 transitions. [2025-03-08 01:55:53,939 INFO L78 Accepts]: Start accepts. Automaton has 62650 states and 73447 transitions. Word has length 322 [2025-03-08 01:55:53,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:55:53,940 INFO L471 AbstractCegarLoop]: Abstraction has 62650 states and 73447 transitions. [2025-03-08 01:55:53,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states 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 01:55:53,940 INFO L276 IsEmpty]: Start isEmpty. Operand 62650 states and 73447 transitions. [2025-03-08 01:55:53,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2025-03-08 01:55:53,943 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:55:53,943 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2025-03-08 01:55:53,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 01:55:53,943 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:55:53,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:55:53,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1585369823, now seen corresponding path program 1 times [2025-03-08 01:55:53,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:55:53,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027688622] [2025-03-08 01:55:53,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:55:53,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:55:53,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 347 statements into 1 equivalence classes. [2025-03-08 01:55:53,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 347 of 347 statements. [2025-03-08 01:55:53,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:55:53,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:55:54,233 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2025-03-08 01:55:54,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:55:54,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027688622] [2025-03-08 01:55:54,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027688622] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:55:54,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:55:54,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:55:54,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865121783] [2025-03-08 01:55:54,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:55:54,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:55:54,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:55:54,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:55:54,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:55:54,234 INFO L87 Difference]: Start difference. First operand 62650 states and 73447 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:55:57,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:55:57,267 INFO L93 Difference]: Finished difference Result 135515 states and 160966 transitions. [2025-03-08 01:55:57,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:55:57,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 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 347 [2025-03-08 01:55:57,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:55:57,360 INFO L225 Difference]: With dead ends: 135515 [2025-03-08 01:55:57,360 INFO L226 Difference]: Without dead ends: 73654 [2025-03-08 01:55:57,399 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 01:55:57,400 INFO L435 NwaCegarLoop]: 1470 mSDtfsCounter, 1134 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 2403 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-08 01:55:57,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 1559 Invalid, 3174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2403 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-08 01:55:57,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73654 states. [2025-03-08 01:55:58,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73654 to 73653. [2025-03-08 01:55:58,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73653 states, 73652 states have (on average 1.1489165263672405) internal successors, (84620), 73652 states have internal predecessors, (84620), 0 states have call successors, (0), 0 states 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 01:55:58,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73653 states to 73653 states and 84620 transitions. [2025-03-08 01:55:58,125 INFO L78 Accepts]: Start accepts. Automaton has 73653 states and 84620 transitions. Word has length 347 [2025-03-08 01:55:58,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:55:58,126 INFO L471 AbstractCegarLoop]: Abstraction has 73653 states and 84620 transitions. [2025-03-08 01:55:58,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:55:58,126 INFO L276 IsEmpty]: Start isEmpty. Operand 73653 states and 84620 transitions. [2025-03-08 01:55:58,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2025-03-08 01:55:58,131 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:55:58,132 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2025-03-08 01:55:58,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 01:55:58,132 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:55:58,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:55:58,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1622138428, now seen corresponding path program 1 times [2025-03-08 01:55:58,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:55:58,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617076473] [2025-03-08 01:55:58,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:55:58,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:55:58,155 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 425 statements into 1 equivalence classes. [2025-03-08 01:55:58,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 425 of 425 statements. [2025-03-08 01:55:58,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:55:58,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:55:58,411 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2025-03-08 01:55:58,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:55:58,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617076473] [2025-03-08 01:55:58,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617076473] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:55:58,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:55:58,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:55:58,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151775979] [2025-03-08 01:55:58,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:55:58,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:55:58,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:55:58,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:55:58,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:55:58,414 INFO L87 Difference]: Start difference. First operand 73653 states and 84620 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states 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 01:56:01,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:56:01,165 INFO L93 Difference]: Finished difference Result 145723 states and 167580 transitions. [2025-03-08 01:56:01,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:56:01,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 425 [2025-03-08 01:56:01,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:56:01,258 INFO L225 Difference]: With dead ends: 145723 [2025-03-08 01:56:01,258 INFO L226 Difference]: Without dead ends: 72859 [2025-03-08 01:56:01,308 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 01:56:01,309 INFO L435 NwaCegarLoop]: 1712 mSDtfsCounter, 796 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2502 mSolverCounterSat, 680 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 3182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 680 IncrementalHoareTripleChecker+Valid, 2502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-08 01:56:01,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 1855 Invalid, 3182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [680 Valid, 2502 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-08 01:56:01,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72859 states. [2025-03-08 01:56:01,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72859 to 72840. [2025-03-08 01:56:02,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72840 states, 72839 states have (on average 1.1044769972130315) internal successors, (80449), 72839 states have internal predecessors, (80449), 0 states have call successors, (0), 0 states 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 01:56:02,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72840 states to 72840 states and 80449 transitions. [2025-03-08 01:56:02,082 INFO L78 Accepts]: Start accepts. Automaton has 72840 states and 80449 transitions. Word has length 425 [2025-03-08 01:56:02,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:56:02,082 INFO L471 AbstractCegarLoop]: Abstraction has 72840 states and 80449 transitions. [2025-03-08 01:56:02,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states 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 01:56:02,082 INFO L276 IsEmpty]: Start isEmpty. Operand 72840 states and 80449 transitions. [2025-03-08 01:56:02,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2025-03-08 01:56:02,088 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:56:02,088 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-03-08 01:56:02,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 01:56:02,089 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:56:02,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:56:02,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1043649428, now seen corresponding path program 1 times [2025-03-08 01:56:02,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:56:02,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472231401] [2025-03-08 01:56:02,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:56:02,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:56:02,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 453 statements into 1 equivalence classes. [2025-03-08 01:56:02,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 453 of 453 statements. [2025-03-08 01:56:02,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:56:02,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:56:02,400 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 358 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-08 01:56:02,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:56:02,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472231401] [2025-03-08 01:56:02,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472231401] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:56:02,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:56:02,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:56:02,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442771461] [2025-03-08 01:56:02,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:56:02,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:56:02,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:56:02,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:56:02,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:56:02,401 INFO L87 Difference]: Start difference. First operand 72840 states and 80449 transitions. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states 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 01:56:05,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:56:05,297 INFO L93 Difference]: Finished difference Result 197598 states and 217447 transitions. [2025-03-08 01:56:05,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:56:05,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 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 453 [2025-03-08 01:56:05,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:56:05,448 INFO L225 Difference]: With dead ends: 197598 [2025-03-08 01:56:05,448 INFO L226 Difference]: Without dead ends: 121609 [2025-03-08 01:56:05,481 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 01:56:05,482 INFO L435 NwaCegarLoop]: 1745 mSDtfsCounter, 849 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-08 01:56:05,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 1874 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-08 01:56:05,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121609 states. [2025-03-08 01:56:06,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121609 to 115306. [2025-03-08 01:56:06,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115306 states, 115305 states have (on average 1.0787823598282815) internal successors, (124389), 115305 states have internal predecessors, (124389), 0 states have call successors, (0), 0 states 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 01:56:06,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115306 states to 115306 states and 124389 transitions. [2025-03-08 01:56:06,619 INFO L78 Accepts]: Start accepts. Automaton has 115306 states and 124389 transitions. Word has length 453 [2025-03-08 01:56:06,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:56:06,619 INFO L471 AbstractCegarLoop]: Abstraction has 115306 states and 124389 transitions. [2025-03-08 01:56:06,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states 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 01:56:06,619 INFO L276 IsEmpty]: Start isEmpty. Operand 115306 states and 124389 transitions. [2025-03-08 01:56:06,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2025-03-08 01:56:06,626 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:56:06,626 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:56:06,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 01:56:06,627 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:56:06,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:56:06,627 INFO L85 PathProgramCache]: Analyzing trace with hash 41332504, now seen corresponding path program 1 times [2025-03-08 01:56:06,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:56:06,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147874407] [2025-03-08 01:56:06,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:56:06,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:56:06,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 455 statements into 1 equivalence classes. [2025-03-08 01:56:06,662 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 455 of 455 statements. [2025-03-08 01:56:06,662 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:56:06,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:56:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 298 proven. 110 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-08 01:56:08,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:56:08,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147874407] [2025-03-08 01:56:08,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147874407] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 01:56:08,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948183143] [2025-03-08 01:56:08,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:56:08,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 01:56:08,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 01:56:08,078 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 01:56:08,079 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 01:56:08,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 455 statements into 1 equivalence classes. [2025-03-08 01:56:08,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 455 of 455 statements. [2025-03-08 01:56:08,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:56:08,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:56:08,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 01:56:08,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 01:56:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2025-03-08 01:56:08,379 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 01:56:08,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948183143] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:56:08,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 01:56:08,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2025-03-08 01:56:08,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288978050] [2025-03-08 01:56:08,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:56:08,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:56:08,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:56:08,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:56:08,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-08 01:56:08,382 INFO L87 Difference]: Start difference. First operand 115306 states and 124389 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states 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 01:56:11,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:56:11,198 INFO L93 Difference]: Finished difference Result 229812 states and 247974 transitions. [2025-03-08 01:56:11,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:56:11,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 455 [2025-03-08 01:56:11,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:56:11,359 INFO L225 Difference]: With dead ends: 229812 [2025-03-08 01:56:11,359 INFO L226 Difference]: Without dead ends: 115295 [2025-03-08 01:56:11,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-08 01:56:11,434 INFO L435 NwaCegarLoop]: 617 mSDtfsCounter, 948 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-08 01:56:11,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 723 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-08 01:56:11,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115295 states. [2025-03-08 01:56:12,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115295 to 115292. [2025-03-08 01:56:12,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115292 states, 115291 states have (on average 1.0574546148441768) internal successors, (121915), 115291 states have internal predecessors, (121915), 0 states have call successors, (0), 0 states 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 01:56:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115292 states to 115292 states and 121915 transitions. [2025-03-08 01:56:12,823 INFO L78 Accepts]: Start accepts. Automaton has 115292 states and 121915 transitions. Word has length 455 [2025-03-08 01:56:12,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:56:12,824 INFO L471 AbstractCegarLoop]: Abstraction has 115292 states and 121915 transitions. [2025-03-08 01:56:12,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states 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 01:56:12,824 INFO L276 IsEmpty]: Start isEmpty. Operand 115292 states and 121915 transitions. [2025-03-08 01:56:12,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2025-03-08 01:56:12,831 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:56:12,831 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2025-03-08 01:56:12,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 01:56:13,032 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,SelfDestructingSolverStorable14 [2025-03-08 01:56:13,032 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:56:13,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:56:13,032 INFO L85 PathProgramCache]: Analyzing trace with hash 2145682325, now seen corresponding path program 1 times [2025-03-08 01:56:13,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:56:13,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668526939] [2025-03-08 01:56:13,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:56:13,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:56:13,067 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 477 statements into 1 equivalence classes. [2025-03-08 01:56:13,079 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 477 of 477 statements. [2025-03-08 01:56:13,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:56:13,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:56:14,069 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 295 proven. 113 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-08 01:56:14,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:56:14,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668526939] [2025-03-08 01:56:14,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668526939] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 01:56:14,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757548057] [2025-03-08 01:56:14,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:56:14,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 01:56:14,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 01:56:14,072 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 01:56:14,073 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 01:56:14,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 477 statements into 1 equivalence classes. [2025-03-08 01:56:14,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 477 of 477 statements. [2025-03-08 01:56:14,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:56:14,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:56:14,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 01:56:14,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 01:56:14,692 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2025-03-08 01:56:14,692 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 01:56:14,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757548057] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:56:14,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 01:56:14,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2025-03-08 01:56:14,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303210941] [2025-03-08 01:56:14,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:56:14,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:56:14,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:56:14,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:56:14,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 01:56:14,693 INFO L87 Difference]: Start difference. First operand 115292 states and 121915 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 2 states have internal predecessors, (337), 0 states have call successors, (0), 0 states 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 01:56:17,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:56:17,252 INFO L93 Difference]: Finished difference Result 234531 states and 247927 transitions. [2025-03-08 01:56:17,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:56:17,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 2 states have internal predecessors, (337), 0 states have call successors, (0), 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 477 [2025-03-08 01:56:17,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:56:17,405 INFO L225 Difference]: With dead ends: 234531 [2025-03-08 01:56:17,405 INFO L226 Difference]: Without dead ends: 118451 [2025-03-08 01:56:17,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 01:56:17,466 INFO L435 NwaCegarLoop]: 980 mSDtfsCounter, 680 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 2527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-08 01:56:17,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1109 Invalid, 2527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2420 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-08 01:56:17,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118451 states. [2025-03-08 01:56:18,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118451 to 118441. [2025-03-08 01:56:18,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118441 states, 118440 states have (on average 1.0517646065518407) internal successors, (124571), 118440 states have internal predecessors, (124571), 0 states have call successors, (0), 0 states 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 01:56:18,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118441 states to 118441 states and 124571 transitions. [2025-03-08 01:56:18,877 INFO L78 Accepts]: Start accepts. Automaton has 118441 states and 124571 transitions. Word has length 477 [2025-03-08 01:56:18,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:56:18,878 INFO L471 AbstractCegarLoop]: Abstraction has 118441 states and 124571 transitions. [2025-03-08 01:56:18,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 2 states have internal predecessors, (337), 0 states have call successors, (0), 0 states 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 01:56:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand 118441 states and 124571 transitions. [2025-03-08 01:56:18,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2025-03-08 01:56:18,889 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:56:18,889 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 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] [2025-03-08 01:56:18,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 01:56:19,089 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,SelfDestructingSolverStorable15 [2025-03-08 01:56:19,090 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:56:19,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:56:19,090 INFO L85 PathProgramCache]: Analyzing trace with hash 404414345, now seen corresponding path program 1 times [2025-03-08 01:56:19,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:56:19,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094798378] [2025-03-08 01:56:19,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:56:19,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:56:19,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 516 statements into 1 equivalence classes. [2025-03-08 01:56:19,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 516 of 516 statements. [2025-03-08 01:56:19,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:56:19,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:56:19,340 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2025-03-08 01:56:19,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:56:19,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094798378] [2025-03-08 01:56:19,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094798378] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:56:19,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:56:19,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 01:56:19,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056985747] [2025-03-08 01:56:19,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:56:19,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:56:19,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:56:19,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:56:19,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:56:19,343 INFO L87 Difference]: Start difference. First operand 118441 states and 124571 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 01:56:21,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:56:21,329 INFO L93 Difference]: Finished difference Result 235291 states and 247333 transitions. [2025-03-08 01:56:21,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:56:21,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 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 516 [2025-03-08 01:56:21,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:56:21,467 INFO L225 Difference]: With dead ends: 235291 [2025-03-08 01:56:21,467 INFO L226 Difference]: Without dead ends: 117639 [2025-03-08 01:56:21,534 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 01:56:21,534 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 1548 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-08 01:56:21,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 270 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-08 01:56:21,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117639 states. [2025-03-08 01:56:22,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117639 to 117638. [2025-03-08 01:56:22,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117638 states, 117637 states have (on average 1.0501542881916404) internal successors, (123537), 117637 states have internal predecessors, (123537), 0 states have call successors, (0), 0 states 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 01:56:22,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117638 states to 117638 states and 123537 transitions. [2025-03-08 01:56:22,845 INFO L78 Accepts]: Start accepts. Automaton has 117638 states and 123537 transitions. Word has length 516 [2025-03-08 01:56:22,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:56:22,845 INFO L471 AbstractCegarLoop]: Abstraction has 117638 states and 123537 transitions. [2025-03-08 01:56:22,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 01:56:22,845 INFO L276 IsEmpty]: Start isEmpty. Operand 117638 states and 123537 transitions. [2025-03-08 01:56:22,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2025-03-08 01:56:22,857 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:56:22,858 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 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 01:56:22,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 01:56:22,858 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:56:22,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:56:22,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1768301310, now seen corresponding path program 1 times [2025-03-08 01:56:22,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:56:22,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409062677] [2025-03-08 01:56:22,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:56:22,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:56:22,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 530 statements into 1 equivalence classes. [2025-03-08 01:56:22,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 530 of 530 statements. [2025-03-08 01:56:22,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:56:22,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:56:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 428 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2025-03-08 01:56:23,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:56:23,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409062677] [2025-03-08 01:56:23,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409062677] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:56:23,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:56:23,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:56:23,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408658510] [2025-03-08 01:56:23,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:56:23,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:56:23,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:56:23,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:56:23,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:56:23,386 INFO L87 Difference]: Start difference. First operand 117638 states and 123537 transitions. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states 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 01:56:26,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:56:26,059 INFO L93 Difference]: Finished difference Result 235278 states and 247112 transitions. [2025-03-08 01:56:26,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:56:26,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 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 530 [2025-03-08 01:56:26,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:56:26,182 INFO L225 Difference]: With dead ends: 235278 [2025-03-08 01:56:26,182 INFO L226 Difference]: Without dead ends: 118429 [2025-03-08 01:56:26,247 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 01:56:26,248 INFO L435 NwaCegarLoop]: 1703 mSDtfsCounter, 609 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2415 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 2425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-08 01:56:26,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 1827 Invalid, 2425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2415 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-08 01:56:26,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118429 states. [2025-03-08 01:56:27,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118429 to 118425. [2025-03-08 01:56:27,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118425 states, 118424 states have (on average 1.0500489765588057) internal successors, (124351), 118424 states have internal predecessors, (124351), 0 states have call successors, (0), 0 states 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 01:56:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118425 states to 118425 states and 124351 transitions. [2025-03-08 01:56:27,274 INFO L78 Accepts]: Start accepts. Automaton has 118425 states and 124351 transitions. Word has length 530 [2025-03-08 01:56:27,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:56:27,274 INFO L471 AbstractCegarLoop]: Abstraction has 118425 states and 124351 transitions. [2025-03-08 01:56:27,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states 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 01:56:27,274 INFO L276 IsEmpty]: Start isEmpty. Operand 118425 states and 124351 transitions. [2025-03-08 01:56:27,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2025-03-08 01:56:27,283 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:56:27,283 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:27,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 01:56:27,283 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:56:27,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:56:27,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2000665148, now seen corresponding path program 1 times [2025-03-08 01:56:27,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:56:27,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238818741] [2025-03-08 01:56:27,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:56:27,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:56:27,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 537 statements into 1 equivalence classes. [2025-03-08 01:56:27,332 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 537 of 537 statements. [2025-03-08 01:56:27,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:56:27,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:56:27,540 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 568 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2025-03-08 01:56:27,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:56:27,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238818741] [2025-03-08 01:56:27,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238818741] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:56:27,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:56:27,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:56:27,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642740097] [2025-03-08 01:56:27,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:56:27,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:56:27,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:56:27,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:56:27,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:56:27,542 INFO L87 Difference]: Start difference. First operand 118425 states and 124351 transitions. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states 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 01:56:30,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:56:30,116 INFO L93 Difference]: Finished difference Result 236052 states and 247829 transitions. [2025-03-08 01:56:30,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:56:30,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 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 537 [2025-03-08 01:56:30,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:56:30,257 INFO L225 Difference]: With dead ends: 236052 [2025-03-08 01:56:30,257 INFO L226 Difference]: Without dead ends: 116837 [2025-03-08 01:56:30,331 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 01:56:30,331 INFO L435 NwaCegarLoop]: 1554 mSDtfsCounter, 770 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 2740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-08 01:56:30,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 1677 Invalid, 2740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-08 01:56:30,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116837 states.