./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label47.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/Problem17_label47.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 584120db80e48cf9596b5da45bc5f64e7e8f9b48dd0380aa05459606ea632f16 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 02:11:48,522 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 02:11:48,568 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 02:11:48,575 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 02:11:48,575 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 02:11:48,593 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 02:11:48,594 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 02:11:48,594 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 02:11:48,595 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 02:11:48,595 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 02:11:48,595 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 02:11:48,595 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 02:11:48,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 02:11:48,595 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 02:11:48,596 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 02:11:48,596 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 02:11:48,596 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 02:11:48,596 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 02:11:48,596 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 02:11:48,596 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 02:11:48,596 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 02:11:48,596 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 02:11:48,597 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 02:11:48,597 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 02:11:48,597 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 02:11:48,597 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 02:11:48,597 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 02:11:48,597 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 02:11:48,597 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 02:11:48,597 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 02:11:48,598 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 02:11:48,598 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 02:11:48,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 02:11:48,598 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 02:11:48,598 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 02:11:48,598 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 02:11:48,598 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 02:11:48,598 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 02:11:48,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 02:11:48,598 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 02:11:48,599 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 02:11:48,599 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 02:11:48,599 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 02:11:48,599 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 -> 584120db80e48cf9596b5da45bc5f64e7e8f9b48dd0380aa05459606ea632f16 [2025-03-08 02:11:48,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 02:11:48,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 02:11:48,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 02:11:48,843 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 02:11:48,843 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 02:11:48,844 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label47.c [2025-03-08 02:11:50,036 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b6feb7ec/1a0c1ce9e9a44a63b492e46b3d574718/FLAGf0a5444dd [2025-03-08 02:11:50,462 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 02:11:50,462 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label47.c [2025-03-08 02:11:50,484 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b6feb7ec/1a0c1ce9e9a44a63b492e46b3d574718/FLAGf0a5444dd [2025-03-08 02:11:50,609 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b6feb7ec/1a0c1ce9e9a44a63b492e46b3d574718 [2025-03-08 02:11:50,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 02:11:50,612 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 02:11:50,614 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 02:11:50,614 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 02:11:50,617 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 02:11:50,618 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 02:11:50" (1/1) ... [2025-03-08 02:11:50,619 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d08bdda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:11:50, skipping insertion in model container [2025-03-08 02:11:50,620 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 02:11:50" (1/1) ... [2025-03-08 02:11:50,682 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 02:11:50,863 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/Problem17_label47.c[6608,6621] [2025-03-08 02:11:51,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 02:11:51,282 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 02:11:51,303 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/Problem17_label47.c[6608,6621] [2025-03-08 02:11:51,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 02:11:51,493 INFO L204 MainTranslator]: Completed translation [2025-03-08 02:11:51,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:11:51 WrapperNode [2025-03-08 02:11:51,494 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 02:11:51,495 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 02:11:51,495 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 02:11:51,495 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 02:11:51,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:11:51" (1/1) ... [2025-03-08 02:11:51,524 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:11:51" (1/1) ... [2025-03-08 02:11:51,702 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2610 [2025-03-08 02:11:51,703 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 02:11:51,703 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 02:11:51,703 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 02:11:51,703 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 02:11:51,711 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:11:51" (1/1) ... [2025-03-08 02:11:51,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:11:51" (1/1) ... [2025-03-08 02:11:51,808 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:11:51" (1/1) ... [2025-03-08 02:11:51,928 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 02:11:51,928 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:11:51" (1/1) ... [2025-03-08 02:11:51,928 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:11:51" (1/1) ... [2025-03-08 02:11:52,045 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:11:51" (1/1) ... [2025-03-08 02:11:52,058 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:11:51" (1/1) ... [2025-03-08 02:11:52,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:11:51" (1/1) ... [2025-03-08 02:11:52,083 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:11:51" (1/1) ... [2025-03-08 02:11:52,120 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 02:11:52,121 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 02:11:52,121 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 02:11:52,121 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 02:11:52,122 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:11:51" (1/1) ... [2025-03-08 02:11:52,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 02:11:52,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:11:52,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 02:11:52,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 02:11:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 02:11:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 02:11:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 02:11:52,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 02:11:52,214 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 02:11:52,215 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 02:11:54,974 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1653: havoc calculate_output_#t~ret7#1; [2025-03-08 02:11:55,072 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2025-03-08 02:11:55,072 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 02:11:55,090 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 02:11:55,091 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 02:11:55,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 02:11:55 BoogieIcfgContainer [2025-03-08 02:11:55,092 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 02:11:55,093 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 02:11:55,093 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 02:11:55,097 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 02:11:55,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 02:11:50" (1/3) ... [2025-03-08 02:11:55,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd11f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 02:11:55, skipping insertion in model container [2025-03-08 02:11:55,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:11:51" (2/3) ... [2025-03-08 02:11:55,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd11f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 02:11:55, skipping insertion in model container [2025-03-08 02:11:55,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 02:11:55" (3/3) ... [2025-03-08 02:11:55,099 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem17_label47.c [2025-03-08 02:11:55,109 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 02:11:55,110 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem17_label47.c that has 1 procedures, 590 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 02:11:55,169 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 02:11:55,180 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;@66191023, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 02:11:55,181 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 02:11:55,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.804421768707483) internal successors, (1061), 589 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:11:55,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-03-08 02:11:55,193 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:11:55,193 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:11:55,194 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:11:55,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:11:55,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1621247163, now seen corresponding path program 1 times [2025-03-08 02:11:55,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:11:55,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642152040] [2025-03-08 02:11:55,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:11:55,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:11:55,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-08 02:11:55,291 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-08 02:11:55,299 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:11:55,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:11:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 02:11:55,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:11:55,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642152040] [2025-03-08 02:11:55,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642152040] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:11:55,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:11:55,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 02:11:55,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348277545] [2025-03-08 02:11:55,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:11:55,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:11:55,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:11:55,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:11:55,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:11:55,503 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.804421768707483) internal successors, (1061), 589 states have internal predecessors, (1061), 0 states have call successors, (0), 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 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:11:57,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:11:57,446 INFO L93 Difference]: Finished difference Result 1644 states and 3026 transitions. [2025-03-08 02:11:57,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:11:57,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2025-03-08 02:11:57,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:11:57,458 INFO L225 Difference]: With dead ends: 1644 [2025-03-08 02:11:57,458 INFO L226 Difference]: Without dead ends: 977 [2025-03-08 02:11:57,461 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:11:57,463 INFO L435 NwaCegarLoop]: 425 mSDtfsCounter, 444 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-08 02:11:57,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 503 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-08 02:11:57,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2025-03-08 02:11:57,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2025-03-08 02:11:57,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5536082474226804) internal successors, (1507), 970 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:11:57,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2025-03-08 02:11:57,536 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 44 [2025-03-08 02:11:57,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:11:57,536 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2025-03-08 02:11:57,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:11:57,537 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2025-03-08 02:11:57,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-03-08 02:11:57,538 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:11:57,539 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, 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] [2025-03-08 02:11:57,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 02:11:57,539 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:11:57,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:11:57,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1269041401, now seen corresponding path program 1 times [2025-03-08 02:11:57,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:11:57,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780293578] [2025-03-08 02:11:57,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:11:57,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:11:57,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-03-08 02:11:57,606 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-03-08 02:11:57,606 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:11:57,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:11:57,773 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 02:11:57,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:11:57,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780293578] [2025-03-08 02:11:57,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780293578] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:11:57,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:11:57,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 02:11:57,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163337309] [2025-03-08 02:11:57,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:11:57,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:11:57,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:11:57,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:11:57,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:11:57,775 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:11:59,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:11:59,581 INFO L93 Difference]: Finished difference Result 2815 states and 4382 transitions. [2025-03-08 02:11:59,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:11:59,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2025-03-08 02:11:59,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:11:59,587 INFO L225 Difference]: With dead ends: 2815 [2025-03-08 02:11:59,588 INFO L226 Difference]: Without dead ends: 1846 [2025-03-08 02:11:59,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:11:59,590 INFO L435 NwaCegarLoop]: 508 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-08 02:11:59,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 581 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-08 02:11:59,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2025-03-08 02:11:59,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1841. [2025-03-08 02:11:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.3505434782608696) internal successors, (2485), 1840 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:11:59,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2485 transitions. [2025-03-08 02:11:59,630 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2485 transitions. Word has length 111 [2025-03-08 02:11:59,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:11:59,630 INFO L471 AbstractCegarLoop]: Abstraction has 1841 states and 2485 transitions. [2025-03-08 02:11:59,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:11:59,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2485 transitions. [2025-03-08 02:11:59,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-08 02:11:59,633 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:11:59,633 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, 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] [2025-03-08 02:11:59,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 02:11:59,633 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:11:59,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:11:59,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1360857939, now seen corresponding path program 1 times [2025-03-08 02:11:59,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:11:59,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561758712] [2025-03-08 02:11:59,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:11:59,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:11:59,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-08 02:11:59,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-08 02:11:59,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:11:59,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:11:59,891 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 02:11:59,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:11:59,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561758712] [2025-03-08 02:11:59,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561758712] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:11:59,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:11:59,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:11:59,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40960378] [2025-03-08 02:11:59,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:11:59,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 02:11:59,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:11:59,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 02:11:59,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:11:59,895 INFO L87 Difference]: Start difference. First operand 1841 states and 2485 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:02,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:12:02,691 INFO L93 Difference]: Finished difference Result 5865 states and 8159 transitions. [2025-03-08 02:12:02,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 02:12:02,691 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2025-03-08 02:12:02,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:12:02,702 INFO L225 Difference]: With dead ends: 5865 [2025-03-08 02:12:02,703 INFO L226 Difference]: Without dead ends: 4026 [2025-03-08 02:12:02,708 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 02:12:02,708 INFO L435 NwaCegarLoop]: 305 mSDtfsCounter, 1001 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 2760 mSolverCounterSat, 760 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 3520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 760 IncrementalHoareTripleChecker+Valid, 2760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-08 02:12:02,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 414 Invalid, 3520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [760 Valid, 2760 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-08 02:12:02,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2025-03-08 02:12:02,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 4020. [2025-03-08 02:12:02,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4020 states, 4019 states have (on average 1.3264493655138094) internal successors, (5331), 4019 states have internal predecessors, (5331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:02,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4020 states to 4020 states and 5331 transitions. [2025-03-08 02:12:02,767 INFO L78 Accepts]: Start accepts. Automaton has 4020 states and 5331 transitions. Word has length 114 [2025-03-08 02:12:02,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:12:02,769 INFO L471 AbstractCegarLoop]: Abstraction has 4020 states and 5331 transitions. [2025-03-08 02:12:02,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:02,769 INFO L276 IsEmpty]: Start isEmpty. Operand 4020 states and 5331 transitions. [2025-03-08 02:12:02,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2025-03-08 02:12:02,772 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:12:02,772 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:12:02,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 02:12:02,773 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:12:02,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:12:02,773 INFO L85 PathProgramCache]: Analyzing trace with hash -394975740, now seen corresponding path program 1 times [2025-03-08 02:12:02,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:12:02,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30532818] [2025-03-08 02:12:02,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:12:02,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:12:02,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 179 statements into 1 equivalence classes. [2025-03-08 02:12:02,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 179 of 179 statements. [2025-03-08 02:12:02,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:12:02,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:12:02,970 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-03-08 02:12:02,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:12:02,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30532818] [2025-03-08 02:12:02,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30532818] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:12:02,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:12:02,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 02:12:02,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362147440] [2025-03-08 02:12:02,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:12:02,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:12:02,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:12:02,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:12:02,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:12:02,973 INFO L87 Difference]: Start difference. First operand 4020 states and 5331 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:04,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:12:04,337 INFO L93 Difference]: Finished difference Result 10602 states and 14367 transitions. [2025-03-08 02:12:04,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:12:04,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 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 179 [2025-03-08 02:12:04,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:12:04,355 INFO L225 Difference]: With dead ends: 10602 [2025-03-08 02:12:04,355 INFO L226 Difference]: Without dead ends: 6580 [2025-03-08 02:12:04,361 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:12:04,364 INFO L435 NwaCegarLoop]: 515 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-08 02:12:04,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 590 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-08 02:12:04,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6580 states. [2025-03-08 02:12:04,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6580 to 5301. [2025-03-08 02:12:04,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5301 states, 5300 states have (on average 1.2269811320754718) internal successors, (6503), 5300 states have internal predecessors, (6503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:04,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5301 states to 5301 states and 6503 transitions. [2025-03-08 02:12:04,467 INFO L78 Accepts]: Start accepts. Automaton has 5301 states and 6503 transitions. Word has length 179 [2025-03-08 02:12:04,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:12:04,467 INFO L471 AbstractCegarLoop]: Abstraction has 5301 states and 6503 transitions. [2025-03-08 02:12:04,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:04,468 INFO L276 IsEmpty]: Start isEmpty. Operand 5301 states and 6503 transitions. [2025-03-08 02:12:04,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2025-03-08 02:12:04,469 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:12:04,470 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:12:04,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 02:12:04,470 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:12:04,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:12:04,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1360488052, now seen corresponding path program 1 times [2025-03-08 02:12:04,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:12:04,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621906933] [2025-03-08 02:12:04,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:12:04,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:12:04,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 192 statements into 1 equivalence classes. [2025-03-08 02:12:04,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 192 of 192 statements. [2025-03-08 02:12:04,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:12:04,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:12:04,633 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 02:12:04,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:12:04,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621906933] [2025-03-08 02:12:04,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621906933] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:12:04,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:12:04,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:12:04,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809117939] [2025-03-08 02:12:04,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:12:04,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:12:04,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:12:04,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:12:04,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:12:04,635 INFO L87 Difference]: Start difference. First operand 5301 states and 6503 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:05,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:12:05,948 INFO L93 Difference]: Finished difference Result 13157 states and 16529 transitions. [2025-03-08 02:12:05,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:12:05,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2025-03-08 02:12:05,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:12:05,965 INFO L225 Difference]: With dead ends: 13157 [2025-03-08 02:12:05,965 INFO L226 Difference]: Without dead ends: 7858 [2025-03-08 02:12:05,971 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:12:05,971 INFO L435 NwaCegarLoop]: 751 mSDtfsCounter, 500 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-08 02:12:05,972 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 808 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-08 02:12:05,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7858 states. [2025-03-08 02:12:06,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7858 to 7858. [2025-03-08 02:12:06,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7858 states, 7857 states have (on average 1.2102583683339696) internal successors, (9509), 7857 states have internal predecessors, (9509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:06,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7858 states to 7858 states and 9509 transitions. [2025-03-08 02:12:06,058 INFO L78 Accepts]: Start accepts. Automaton has 7858 states and 9509 transitions. Word has length 192 [2025-03-08 02:12:06,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:12:06,058 INFO L471 AbstractCegarLoop]: Abstraction has 7858 states and 9509 transitions. [2025-03-08 02:12:06,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:06,059 INFO L276 IsEmpty]: Start isEmpty. Operand 7858 states and 9509 transitions. [2025-03-08 02:12:06,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2025-03-08 02:12:06,063 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:12:06,063 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, 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, 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] [2025-03-08 02:12:06,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 02:12:06,063 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:12:06,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:12:06,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1860437931, now seen corresponding path program 1 times [2025-03-08 02:12:06,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:12:06,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751814789] [2025-03-08 02:12:06,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:12:06,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:12:06,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 296 statements into 1 equivalence classes. [2025-03-08 02:12:06,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 296 of 296 statements. [2025-03-08 02:12:06,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:12:06,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:12:06,434 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2025-03-08 02:12:06,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:12:06,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751814789] [2025-03-08 02:12:06,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751814789] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:12:06,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:12:06,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:12:06,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328346219] [2025-03-08 02:12:06,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:12:06,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:12:06,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:12:06,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:12:06,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:12:06,437 INFO L87 Difference]: Start difference. First operand 7858 states and 9509 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:08,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:12:08,161 INFO L93 Difference]: Finished difference Result 23005 states and 27850 transitions. [2025-03-08 02:12:08,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:12:08,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 296 [2025-03-08 02:12:08,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:12:08,196 INFO L225 Difference]: With dead ends: 23005 [2025-03-08 02:12:08,196 INFO L226 Difference]: Without dead ends: 15149 [2025-03-08 02:12:08,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:12:08,205 INFO L435 NwaCegarLoop]: 874 mSDtfsCounter, 463 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-08 02:12:08,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 924 Invalid, 1876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1652 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-08 02:12:08,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15149 states. [2025-03-08 02:12:08,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15149 to 12995. [2025-03-08 02:12:08,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12995 states, 12994 states have (on average 1.2274126519932276) internal successors, (15949), 12994 states have internal predecessors, (15949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:08,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12995 states to 12995 states and 15949 transitions. [2025-03-08 02:12:08,440 INFO L78 Accepts]: Start accepts. Automaton has 12995 states and 15949 transitions. Word has length 296 [2025-03-08 02:12:08,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:12:08,440 INFO L471 AbstractCegarLoop]: Abstraction has 12995 states and 15949 transitions. [2025-03-08 02:12:08,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:08,441 INFO L276 IsEmpty]: Start isEmpty. Operand 12995 states and 15949 transitions. [2025-03-08 02:12:08,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2025-03-08 02:12:08,448 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:12:08,448 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, 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, 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] [2025-03-08 02:12:08,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 02:12:08,449 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:12:08,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:12:08,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1120004606, now seen corresponding path program 1 times [2025-03-08 02:12:08,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:12:08,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248044980] [2025-03-08 02:12:08,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:12:08,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:12:08,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 297 statements into 1 equivalence classes. [2025-03-08 02:12:08,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 297 of 297 statements. [2025-03-08 02:12:08,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:12:08,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:12:08,667 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2025-03-08 02:12:08,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:12:08,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248044980] [2025-03-08 02:12:08,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248044980] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:12:08,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:12:08,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:12:08,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955826943] [2025-03-08 02:12:08,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:12:08,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:12:08,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:12:08,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:12:08,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:12:08,669 INFO L87 Difference]: Start difference. First operand 12995 states and 15949 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:10,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:12:10,334 INFO L93 Difference]: Finished difference Result 31501 states and 38602 transitions. [2025-03-08 02:12:10,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:12:10,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 297 [2025-03-08 02:12:10,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:12:10,361 INFO L225 Difference]: With dead ends: 31501 [2025-03-08 02:12:10,361 INFO L226 Difference]: Without dead ends: 17658 [2025-03-08 02:12:10,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:12:10,375 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 400 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 1620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-08 02:12:10,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 952 Invalid, 1620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-08 02:12:10,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17658 states. [2025-03-08 02:12:10,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17658 to 12121. [2025-03-08 02:12:10,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12121 states, 12120 states have (on average 1.1797029702970296) internal successors, (14298), 12120 states have internal predecessors, (14298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:10,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12121 states to 12121 states and 14298 transitions. [2025-03-08 02:12:10,542 INFO L78 Accepts]: Start accepts. Automaton has 12121 states and 14298 transitions. Word has length 297 [2025-03-08 02:12:10,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:12:10,542 INFO L471 AbstractCegarLoop]: Abstraction has 12121 states and 14298 transitions. [2025-03-08 02:12:10,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:10,543 INFO L276 IsEmpty]: Start isEmpty. Operand 12121 states and 14298 transitions. [2025-03-08 02:12:10,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2025-03-08 02:12:10,546 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:12:10,547 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:12:10,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 02:12:10,547 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:12:10,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:12:10,548 INFO L85 PathProgramCache]: Analyzing trace with hash 320476112, now seen corresponding path program 1 times [2025-03-08 02:12:10,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:12:10,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906454539] [2025-03-08 02:12:10,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:12:10,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:12:10,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 314 statements into 1 equivalence classes. [2025-03-08 02:12:10,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 314 of 314 statements. [2025-03-08 02:12:10,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:12:10,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:12:10,704 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2025-03-08 02:12:10,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:12:10,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906454539] [2025-03-08 02:12:10,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906454539] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:12:10,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:12:10,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:12:10,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665104311] [2025-03-08 02:12:10,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:12:10,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:12:10,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:12:10,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:12:10,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:12:10,706 INFO L87 Difference]: Start difference. First operand 12121 states and 14298 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:12,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:12:12,112 INFO L93 Difference]: Finished difference Result 31045 states and 36681 transitions. [2025-03-08 02:12:12,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:12:12,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 314 [2025-03-08 02:12:12,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:12:12,143 INFO L225 Difference]: With dead ends: 31045 [2025-03-08 02:12:12,143 INFO L226 Difference]: Without dead ends: 18926 [2025-03-08 02:12:12,156 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:12:12,157 INFO L435 NwaCegarLoop]: 348 mSDtfsCounter, 449 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-08 02:12:12,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 405 Invalid, 1558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-08 02:12:12,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18926 states. [2025-03-08 02:12:12,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18926 to 16793. [2025-03-08 02:12:12,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16793 states, 16792 states have (on average 1.167877560743211) internal successors, (19611), 16792 states have internal predecessors, (19611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:12,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16793 states to 16793 states and 19611 transitions. [2025-03-08 02:12:12,416 INFO L78 Accepts]: Start accepts. Automaton has 16793 states and 19611 transitions. Word has length 314 [2025-03-08 02:12:12,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:12:12,417 INFO L471 AbstractCegarLoop]: Abstraction has 16793 states and 19611 transitions. [2025-03-08 02:12:12,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:12,417 INFO L276 IsEmpty]: Start isEmpty. Operand 16793 states and 19611 transitions. [2025-03-08 02:12:12,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2025-03-08 02:12:12,424 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:12:12,425 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, 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, 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 02:12:12,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 02:12:12,425 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:12:12,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:12:12,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1767929469, now seen corresponding path program 1 times [2025-03-08 02:12:12,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:12:12,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175048556] [2025-03-08 02:12:12,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:12:12,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:12:12,477 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 358 statements into 1 equivalence classes. [2025-03-08 02:12:12,502 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 358 of 358 statements. [2025-03-08 02:12:12,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:12:12,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:12:12,743 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2025-03-08 02:12:12,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:12:12,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175048556] [2025-03-08 02:12:12,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175048556] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:12:12,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:12:12,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:12:12,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149253395] [2025-03-08 02:12:12,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:12:12,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:12:12,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:12:12,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:12:12,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:12:12,745 INFO L87 Difference]: Start difference. First operand 16793 states and 19611 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:14,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:12:14,182 INFO L93 Difference]: Finished difference Result 41278 states and 48341 transitions. [2025-03-08 02:12:14,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:12:14,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 358 [2025-03-08 02:12:14,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:12:14,218 INFO L225 Difference]: With dead ends: 41278 [2025-03-08 02:12:14,218 INFO L226 Difference]: Without dead ends: 23623 [2025-03-08 02:12:14,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:12:14,237 INFO L435 NwaCegarLoop]: 737 mSDtfsCounter, 482 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-08 02:12:14,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 800 Invalid, 1587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-08 02:12:14,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23623 states. [2025-03-08 02:12:14,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23623 to 21064. [2025-03-08 02:12:14,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21064 states, 21063 states have (on average 1.166595451740018) internal successors, (24572), 21063 states have internal predecessors, (24572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:14,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21064 states to 21064 states and 24572 transitions. [2025-03-08 02:12:14,506 INFO L78 Accepts]: Start accepts. Automaton has 21064 states and 24572 transitions. Word has length 358 [2025-03-08 02:12:14,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:12:14,506 INFO L471 AbstractCegarLoop]: Abstraction has 21064 states and 24572 transitions. [2025-03-08 02:12:14,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:14,506 INFO L276 IsEmpty]: Start isEmpty. Operand 21064 states and 24572 transitions. [2025-03-08 02:12:14,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2025-03-08 02:12:14,515 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:12:14,515 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, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:12:14,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 02:12:14,515 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:12:14,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:12:14,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1903580013, now seen corresponding path program 1 times [2025-03-08 02:12:14,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:12:14,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755028213] [2025-03-08 02:12:14,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:12:14,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:12:14,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 366 statements into 1 equivalence classes. [2025-03-08 02:12:14,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 366 of 366 statements. [2025-03-08 02:12:14,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:12:14,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:12:14,999 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 447 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2025-03-08 02:12:14,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:12:15,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755028213] [2025-03-08 02:12:15,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755028213] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:12:15,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:12:15,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 02:12:15,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246780958] [2025-03-08 02:12:15,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:12:15,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 02:12:15,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:12:15,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 02:12:15,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:12:15,002 INFO L87 Difference]: Start difference. First operand 21064 states and 24572 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:17,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:12:17,150 INFO L93 Difference]: Finished difference Result 61335 states and 70911 transitions. [2025-03-08 02:12:17,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 02:12:17,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 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 366 [2025-03-08 02:12:17,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:12:17,195 INFO L225 Difference]: With dead ends: 61335 [2025-03-08 02:12:17,195 INFO L226 Difference]: Without dead ends: 39848 [2025-03-08 02:12:17,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:12:17,216 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 919 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 3017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-08 02:12:17,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 202 Invalid, 3017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 2515 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-08 02:12:17,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39848 states. [2025-03-08 02:12:17,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39848 to 26634. [2025-03-08 02:12:17,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26634 states, 26633 states have (on average 1.168475199939924) internal successors, (31120), 26633 states have internal predecessors, (31120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:17,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26634 states to 26634 states and 31120 transitions. [2025-03-08 02:12:17,563 INFO L78 Accepts]: Start accepts. Automaton has 26634 states and 31120 transitions. Word has length 366 [2025-03-08 02:12:17,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:12:17,564 INFO L471 AbstractCegarLoop]: Abstraction has 26634 states and 31120 transitions. [2025-03-08 02:12:17,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:17,564 INFO L276 IsEmpty]: Start isEmpty. Operand 26634 states and 31120 transitions. [2025-03-08 02:12:17,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2025-03-08 02:12:17,569 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:12:17,570 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:12:17,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 02:12:17,570 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:12:17,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:12:17,571 INFO L85 PathProgramCache]: Analyzing trace with hash 2025233477, now seen corresponding path program 1 times [2025-03-08 02:12:17,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:12:17,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292983493] [2025-03-08 02:12:17,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:12:17,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:12:17,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-03-08 02:12:17,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-03-08 02:12:17,619 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:12:17,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:12:17,776 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-03-08 02:12:17,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:12:17,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292983493] [2025-03-08 02:12:17,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292983493] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:12:17,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:12:17,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:12:17,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423089451] [2025-03-08 02:12:17,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:12:17,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:12:17,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:12:17,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:12:17,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:12:17,778 INFO L87 Difference]: Start difference. First operand 26634 states and 31120 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:19,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:12:19,217 INFO L93 Difference]: Finished difference Result 64404 states and 75814 transitions. [2025-03-08 02:12:19,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:12:19,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 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 386 [2025-03-08 02:12:19,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:12:19,250 INFO L225 Difference]: With dead ends: 64404 [2025-03-08 02:12:19,250 INFO L226 Difference]: Without dead ends: 36922 [2025-03-08 02:12:19,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:12:19,271 INFO L435 NwaCegarLoop]: 813 mSDtfsCounter, 379 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-08 02:12:19,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 886 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-08 02:12:19,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36922 states. [2025-03-08 02:12:19,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36922 to 36058. [2025-03-08 02:12:19,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36058 states, 36057 states have (on average 1.145353190781263) internal successors, (41298), 36057 states have internal predecessors, (41298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:19,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36058 states to 36058 states and 41298 transitions. [2025-03-08 02:12:19,684 INFO L78 Accepts]: Start accepts. Automaton has 36058 states and 41298 transitions. Word has length 386 [2025-03-08 02:12:19,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:12:19,685 INFO L471 AbstractCegarLoop]: Abstraction has 36058 states and 41298 transitions. [2025-03-08 02:12:19,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:19,685 INFO L276 IsEmpty]: Start isEmpty. Operand 36058 states and 41298 transitions. [2025-03-08 02:12:19,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2025-03-08 02:12:19,691 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:12:19,692 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:12:19,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 02:12:19,692 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:12:19,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:12:19,693 INFO L85 PathProgramCache]: Analyzing trace with hash -914155193, now seen corresponding path program 1 times [2025-03-08 02:12:19,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:12:19,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047736958] [2025-03-08 02:12:19,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:12:19,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:12:19,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 433 statements into 1 equivalence classes. [2025-03-08 02:12:19,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 433 of 433 statements. [2025-03-08 02:12:19,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:12:19,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:12:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2025-03-08 02:12:19,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:12:19,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047736958] [2025-03-08 02:12:19,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047736958] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:12:19,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:12:19,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:12:19,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117949341] [2025-03-08 02:12:19,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:12:19,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:12:19,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:12:19,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:12:19,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:12:19,934 INFO L87 Difference]: Start difference. First operand 36058 states and 41298 transitions. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:21,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:12:21,515 INFO L93 Difference]: Finished difference Result 82782 states and 94745 transitions. [2025-03-08 02:12:21,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:12:21,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 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 433 [2025-03-08 02:12:21,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:12:21,566 INFO L225 Difference]: With dead ends: 82782 [2025-03-08 02:12:21,567 INFO L226 Difference]: Without dead ends: 45438 [2025-03-08 02:12:21,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:12:21,596 INFO L435 NwaCegarLoop]: 691 mSDtfsCounter, 320 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-08 02:12:21,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 747 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-08 02:12:21,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45438 states. [2025-03-08 02:12:21,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45438 to 36049. [2025-03-08 02:12:21,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36049 states, 36048 states have (on average 1.1423102529960054) internal successors, (41178), 36048 states have internal predecessors, (41178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:21,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36049 states to 36049 states and 41178 transitions. [2025-03-08 02:12:21,997 INFO L78 Accepts]: Start accepts. Automaton has 36049 states and 41178 transitions. Word has length 433 [2025-03-08 02:12:21,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:12:21,997 INFO L471 AbstractCegarLoop]: Abstraction has 36049 states and 41178 transitions. [2025-03-08 02:12:21,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:21,998 INFO L276 IsEmpty]: Start isEmpty. Operand 36049 states and 41178 transitions. [2025-03-08 02:12:22,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2025-03-08 02:12:22,003 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:12:22,003 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-03-08 02:12:22,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 02:12:22,004 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:12:22,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:12:22,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1154345498, now seen corresponding path program 1 times [2025-03-08 02:12:22,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:12:22,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177890164] [2025-03-08 02:12:22,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:12:22,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:12:22,035 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 449 statements into 1 equivalence classes. [2025-03-08 02:12:22,054 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 449 of 449 statements. [2025-03-08 02:12:22,054 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:12:22,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:12:22,441 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 355 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2025-03-08 02:12:22,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:12:22,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177890164] [2025-03-08 02:12:22,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177890164] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:12:22,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:12:22,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 02:12:22,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711531849] [2025-03-08 02:12:22,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:12:22,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 02:12:22,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:12:22,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 02:12:22,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:12:22,443 INFO L87 Difference]: Start difference. First operand 36049 states and 41178 transitions. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:24,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:12:24,687 INFO L93 Difference]: Finished difference Result 106198 states and 120766 transitions. [2025-03-08 02:12:24,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 02:12:24,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 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 449 [2025-03-08 02:12:24,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:12:24,756 INFO L225 Difference]: With dead ends: 106198 [2025-03-08 02:12:24,756 INFO L226 Difference]: Without dead ends: 69726 [2025-03-08 02:12:24,779 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:12:24,780 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 783 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 2611 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 3090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 2611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-08 02:12:24,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 187 Invalid, 3090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 2611 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-08 02:12:24,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69726 states. [2025-03-08 02:12:25,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69726 to 60287. [2025-03-08 02:12:25,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60287 states, 60286 states have (on average 1.1287695318979531) internal successors, (68049), 60286 states have internal predecessors, (68049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:25,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60287 states to 60287 states and 68049 transitions. [2025-03-08 02:12:25,291 INFO L78 Accepts]: Start accepts. Automaton has 60287 states and 68049 transitions. Word has length 449 [2025-03-08 02:12:25,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:12:25,292 INFO L471 AbstractCegarLoop]: Abstraction has 60287 states and 68049 transitions. [2025-03-08 02:12:25,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:25,292 INFO L276 IsEmpty]: Start isEmpty. Operand 60287 states and 68049 transitions. [2025-03-08 02:12:25,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2025-03-08 02:12:25,299 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:12:25,299 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, 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, 3, 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] [2025-03-08 02:12:25,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 02:12:25,299 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:12:25,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:12:25,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1372564578, now seen corresponding path program 1 times [2025-03-08 02:12:25,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:12:25,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61748634] [2025-03-08 02:12:25,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:12:25,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:12:25,405 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 468 statements into 1 equivalence classes. [2025-03-08 02:12:25,452 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 468 of 468 statements. [2025-03-08 02:12:25,457 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:12:25,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:12:25,680 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 551 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2025-03-08 02:12:25,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:12:25,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61748634] [2025-03-08 02:12:25,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61748634] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:12:25,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:12:25,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:12:25,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505638753] [2025-03-08 02:12:25,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:12:25,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:12:25,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:12:25,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:12:25,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:12:25,682 INFO L87 Difference]: Start difference. First operand 60287 states and 68049 transitions. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:27,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:12:27,126 INFO L93 Difference]: Finished difference Result 141000 states and 159171 transitions. [2025-03-08 02:12:27,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:12:27,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 468 [2025-03-08 02:12:27,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:12:27,206 INFO L225 Difference]: With dead ends: 141000 [2025-03-08 02:12:27,207 INFO L226 Difference]: Without dead ends: 79423 [2025-03-08 02:12:27,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:12:27,231 INFO L435 NwaCegarLoop]: 611 mSDtfsCounter, 445 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-08 02:12:27,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 649 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-08 02:12:27,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79423 states. [2025-03-08 02:12:27,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79423 to 73450. [2025-03-08 02:12:27,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73450 states, 73449 states have (on average 1.1131124998298139) internal successors, (81757), 73449 states have internal predecessors, (81757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:27,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73450 states to 73450 states and 81757 transitions. [2025-03-08 02:12:27,991 INFO L78 Accepts]: Start accepts. Automaton has 73450 states and 81757 transitions. Word has length 468 [2025-03-08 02:12:27,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:12:27,991 INFO L471 AbstractCegarLoop]: Abstraction has 73450 states and 81757 transitions. [2025-03-08 02:12:27,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:27,991 INFO L276 IsEmpty]: Start isEmpty. Operand 73450 states and 81757 transitions. [2025-03-08 02:12:28,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2025-03-08 02:12:28,002 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:12:28,003 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:12:28,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 02:12:28,003 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:12:28,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:12:28,003 INFO L85 PathProgramCache]: Analyzing trace with hash 874077049, now seen corresponding path program 1 times [2025-03-08 02:12:28,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:12:28,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191706289] [2025-03-08 02:12:28,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:12:28,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:12:28,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 472 statements into 1 equivalence classes. [2025-03-08 02:12:28,079 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 472 of 472 statements. [2025-03-08 02:12:28,080 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:12:28,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:12:28,664 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 433 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2025-03-08 02:12:28,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:12:28,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191706289] [2025-03-08 02:12:28,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191706289] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:12:28,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:12:28,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 02:12:28,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035446882] [2025-03-08 02:12:28,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:12:28,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 02:12:28,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:12:28,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 02:12:28,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:12:28,666 INFO L87 Difference]: Start difference. First operand 73450 states and 81757 transitions. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:31,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:12:31,163 INFO L93 Difference]: Finished difference Result 184847 states and 205031 transitions. [2025-03-08 02:12:31,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 02:12:31,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 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 472 [2025-03-08 02:12:31,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:12:31,289 INFO L225 Difference]: With dead ends: 184847 [2025-03-08 02:12:31,289 INFO L226 Difference]: Without dead ends: 110974 [2025-03-08 02:12:31,308 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:12:31,309 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 812 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 2376 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 2822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-08 02:12:31,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 177 Invalid, 2822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2376 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-08 02:12:31,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110974 states. [2025-03-08 02:12:32,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110974 to 102446. [2025-03-08 02:12:32,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102446 states, 102445 states have (on average 1.1084874810874128) internal successors, (113559), 102445 states have internal predecessors, (113559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:32,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102446 states to 102446 states and 113559 transitions. [2025-03-08 02:12:32,470 INFO L78 Accepts]: Start accepts. Automaton has 102446 states and 113559 transitions. Word has length 472 [2025-03-08 02:12:32,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:12:32,471 INFO L471 AbstractCegarLoop]: Abstraction has 102446 states and 113559 transitions. [2025-03-08 02:12:32,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:32,471 INFO L276 IsEmpty]: Start isEmpty. Operand 102446 states and 113559 transitions. [2025-03-08 02:12:32,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2025-03-08 02:12:32,480 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:12:32,480 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:12:32,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 02:12:32,480 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:12:32,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:12:32,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1930048002, now seen corresponding path program 1 times [2025-03-08 02:12:32,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:12:32,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401574547] [2025-03-08 02:12:32,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:12:32,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:12:32,513 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 492 statements into 1 equivalence classes. [2025-03-08 02:12:32,534 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 492 of 492 statements. [2025-03-08 02:12:32,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:12:32,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:12:32,775 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 433 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2025-03-08 02:12:32,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:12:32,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401574547] [2025-03-08 02:12:32,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401574547] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:12:32,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:12:32,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 02:12:32,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097610815] [2025-03-08 02:12:32,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:12:32,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 02:12:32,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:12:32,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 02:12:32,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:12:32,777 INFO L87 Difference]: Start difference. First operand 102446 states and 113559 transitions. Second operand has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:35,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:12:35,216 INFO L93 Difference]: Finished difference Result 231729 states and 256394 transitions. [2025-03-08 02:12:35,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 02:12:35,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 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 492 [2025-03-08 02:12:35,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:12:35,361 INFO L225 Difference]: With dead ends: 231729 [2025-03-08 02:12:35,362 INFO L226 Difference]: Without dead ends: 128008 [2025-03-08 02:12:35,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:12:35,429 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 787 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 2861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-08 02:12:35,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 225 Invalid, 2861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-08 02:12:35,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128008 states. [2025-03-08 02:12:36,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128008 to 101163. [2025-03-08 02:12:37,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101163 states, 101162 states have (on average 1.1060279551610288) internal successors, (111888), 101162 states have internal predecessors, (111888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:37,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101163 states to 101163 states and 111888 transitions. [2025-03-08 02:12:37,122 INFO L78 Accepts]: Start accepts. Automaton has 101163 states and 111888 transitions. Word has length 492 [2025-03-08 02:12:37,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:12:37,122 INFO L471 AbstractCegarLoop]: Abstraction has 101163 states and 111888 transitions. [2025-03-08 02:12:37,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:37,123 INFO L276 IsEmpty]: Start isEmpty. Operand 101163 states and 111888 transitions. [2025-03-08 02:12:37,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2025-03-08 02:12:37,133 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:12:37,134 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:12:37,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 02:12:37,134 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:12:37,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:12:37,134 INFO L85 PathProgramCache]: Analyzing trace with hash -548809011, now seen corresponding path program 1 times [2025-03-08 02:12:37,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:12:37,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29800126] [2025-03-08 02:12:37,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:12:37,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:12:37,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 512 statements into 1 equivalence classes. [2025-03-08 02:12:37,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 512 of 512 statements. [2025-03-08 02:12:37,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:12:37,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:12:37,479 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 630 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-03-08 02:12:37,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:12:37,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29800126] [2025-03-08 02:12:37,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29800126] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:12:37,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:12:37,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 02:12:37,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448690889] [2025-03-08 02:12:37,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:12:37,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 02:12:37,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:12:37,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 02:12:37,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:12:37,481 INFO L87 Difference]: Start difference. First operand 101163 states and 111888 transitions. Second operand has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:40,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:12:40,109 INFO L93 Difference]: Finished difference Result 237301 states and 263341 transitions. [2025-03-08 02:12:40,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 02:12:40,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 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 512 [2025-03-08 02:12:40,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:12:40,279 INFO L225 Difference]: With dead ends: 237301 [2025-03-08 02:12:40,280 INFO L226 Difference]: Without dead ends: 136140 [2025-03-08 02:12:40,329 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:12:40,329 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 825 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 2762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-08 02:12:40,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 209 Invalid, 2762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-08 02:12:40,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136140 states. [2025-03-08 02:12:41,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136140 to 126769. [2025-03-08 02:12:41,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126769 states, 126768 states have (on average 1.1143111826328411) internal successors, (141259), 126768 states have internal predecessors, (141259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:42,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126769 states to 126769 states and 141259 transitions. [2025-03-08 02:12:42,154 INFO L78 Accepts]: Start accepts. Automaton has 126769 states and 141259 transitions. Word has length 512 [2025-03-08 02:12:42,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:12:42,154 INFO L471 AbstractCegarLoop]: Abstraction has 126769 states and 141259 transitions. [2025-03-08 02:12:42,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:42,154 INFO L276 IsEmpty]: Start isEmpty. Operand 126769 states and 141259 transitions. [2025-03-08 02:12:42,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2025-03-08 02:12:42,166 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:12:42,166 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:12:42,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 02:12:42,166 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:12:42,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:12:42,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1544122413, now seen corresponding path program 1 times [2025-03-08 02:12:42,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:12:42,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811929746] [2025-03-08 02:12:42,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:12:42,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:12:42,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 531 statements into 1 equivalence classes. [2025-03-08 02:12:42,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 531 of 531 statements. [2025-03-08 02:12:42,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:12:42,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:12:42,483 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 590 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2025-03-08 02:12:42,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:12:42,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811929746] [2025-03-08 02:12:42,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811929746] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:12:42,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:12:42,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:12:42,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170648855] [2025-03-08 02:12:42,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:12:42,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:12:42,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:12:42,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:12:42,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:12:42,485 INFO L87 Difference]: Start difference. First operand 126769 states and 141259 transitions. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:44,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:12:44,280 INFO L93 Difference]: Finished difference Result 282461 states and 315838 transitions. [2025-03-08 02:12:44,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:12:44,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 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 531 [2025-03-08 02:12:44,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:12:44,470 INFO L225 Difference]: With dead ends: 282461 [2025-03-08 02:12:44,470 INFO L226 Difference]: Without dead ends: 155694 [2025-03-08 02:12:44,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:12:44,510 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 392 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 02:12:44,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 313 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 02:12:44,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155694 states. [2025-03-08 02:12:46,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155694 to 153981. [2025-03-08 02:12:46,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153981 states, 153980 states have (on average 1.1081828808936225) internal successors, (170638), 153980 states have internal predecessors, (170638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:46,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153981 states to 153981 states and 170638 transitions. [2025-03-08 02:12:46,622 INFO L78 Accepts]: Start accepts. Automaton has 153981 states and 170638 transitions. Word has length 531 [2025-03-08 02:12:46,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:12:46,623 INFO L471 AbstractCegarLoop]: Abstraction has 153981 states and 170638 transitions. [2025-03-08 02:12:46,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:46,623 INFO L276 IsEmpty]: Start isEmpty. Operand 153981 states and 170638 transitions. [2025-03-08 02:12:46,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2025-03-08 02:12:46,634 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:12:46,634 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, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:12:46,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 02:12:46,635 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:12:46,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:12:46,635 INFO L85 PathProgramCache]: Analyzing trace with hash -2057645545, now seen corresponding path program 1 times [2025-03-08 02:12:46,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:12:46,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156416007] [2025-03-08 02:12:46,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:12:46,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:12:46,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 532 statements into 1 equivalence classes. [2025-03-08 02:12:46,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 532 of 532 statements. [2025-03-08 02:12:46,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:12:46,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:12:47,196 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 453 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2025-03-08 02:12:47,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:12:47,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156416007] [2025-03-08 02:12:47,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156416007] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:12:47,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:12:47,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 02:12:47,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971843142] [2025-03-08 02:12:47,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:12:47,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 02:12:47,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:12:47,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 02:12:47,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:12:47,197 INFO L87 Difference]: Start difference. First operand 153981 states and 170638 transitions. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:49,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:12:49,748 INFO L93 Difference]: Finished difference Result 334784 states and 370572 transitions. [2025-03-08 02:12:49,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 02:12:49,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 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 532 [2025-03-08 02:12:49,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:12:49,996 INFO L225 Difference]: With dead ends: 334784 [2025-03-08 02:12:49,997 INFO L226 Difference]: Without dead ends: 180379 [2025-03-08 02:12:50,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:12:50,103 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 765 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 2365 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 2365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-08 02:12:50,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 250 Invalid, 2836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 2365 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-08 02:12:50,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180379 states. [2025-03-08 02:12:51,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180379 to 145450. [2025-03-08 02:12:51,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145450 states, 145449 states have (on average 1.1063534297245083) internal successors, (160918), 145449 states have internal predecessors, (160918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:52,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145450 states to 145450 states and 160918 transitions. [2025-03-08 02:12:52,335 INFO L78 Accepts]: Start accepts. Automaton has 145450 states and 160918 transitions. Word has length 532 [2025-03-08 02:12:52,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:12:52,336 INFO L471 AbstractCegarLoop]: Abstraction has 145450 states and 160918 transitions. [2025-03-08 02:12:52,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:52,336 INFO L276 IsEmpty]: Start isEmpty. Operand 145450 states and 160918 transitions. [2025-03-08 02:12:52,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2025-03-08 02:12:52,348 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:12:52,349 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:12:52,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-08 02:12:52,349 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:12:52,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:12:52,349 INFO L85 PathProgramCache]: Analyzing trace with hash 747194237, now seen corresponding path program 1 times [2025-03-08 02:12:52,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:12:52,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743232217] [2025-03-08 02:12:52,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:12:52,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:12:52,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 544 statements into 1 equivalence classes. [2025-03-08 02:12:52,403 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 544 of 544 statements. [2025-03-08 02:12:52,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:12:52,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:12:52,570 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2025-03-08 02:12:52,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:12:52,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743232217] [2025-03-08 02:12:52,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743232217] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:12:52,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:12:52,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 02:12:52,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055548355] [2025-03-08 02:12:52,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:12:52,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:12:52,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:12:52,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:12:52,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:12:52,571 INFO L87 Difference]: Start difference. First operand 145450 states and 160918 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 2 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:53,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:12:53,809 INFO L93 Difference]: Finished difference Result 286205 states and 316338 transitions. [2025-03-08 02:12:53,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:12:53,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 2 states have internal predecessors, (298), 0 states have call successors, (0), 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 544 [2025-03-08 02:12:53,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:12:53,968 INFO L225 Difference]: With dead ends: 286205 [2025-03-08 02:12:53,968 INFO L226 Difference]: Without dead ends: 140757 [2025-03-08 02:12:54,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:12:54,043 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 625 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 02:12:54,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 107 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 02:12:54,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140757 states. [2025-03-08 02:12:55,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140757 to 136913. [2025-03-08 02:12:55,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136913 states, 136912 states have (on average 1.105286607455884) internal successors, (151327), 136912 states have internal predecessors, (151327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:55,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136913 states to 136913 states and 151327 transitions. [2025-03-08 02:12:55,831 INFO L78 Accepts]: Start accepts. Automaton has 136913 states and 151327 transitions. Word has length 544 [2025-03-08 02:12:55,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:12:55,832 INFO L471 AbstractCegarLoop]: Abstraction has 136913 states and 151327 transitions. [2025-03-08 02:12:55,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 2 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:55,832 INFO L276 IsEmpty]: Start isEmpty. Operand 136913 states and 151327 transitions. [2025-03-08 02:12:55,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2025-03-08 02:12:55,842 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:12:55,842 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:12:55,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-08 02:12:55,842 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:12:55,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:12:55,843 INFO L85 PathProgramCache]: Analyzing trace with hash 319924508, now seen corresponding path program 1 times [2025-03-08 02:12:55,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:12:55,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483199953] [2025-03-08 02:12:55,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:12:55,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:12:55,870 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 544 statements into 1 equivalence classes. [2025-03-08 02:12:55,891 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 544 of 544 statements. [2025-03-08 02:12:55,891 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:12:55,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:12:56,367 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 503 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2025-03-08 02:12:56,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:12:56,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483199953] [2025-03-08 02:12:56,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483199953] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:12:56,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:12:56,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 02:12:56,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016004025] [2025-03-08 02:12:56,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:12:56,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 02:12:56,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:12:56,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 02:12:56,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:12:56,369 INFO L87 Difference]: Start difference. First operand 136913 states and 151327 transitions. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:12:58,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:12:58,815 INFO L93 Difference]: Finished difference Result 292101 states and 321914 transitions. [2025-03-08 02:12:58,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 02:12:58,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 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 544 [2025-03-08 02:12:58,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:12:58,997 INFO L225 Difference]: With dead ends: 292101 [2025-03-08 02:12:58,997 INFO L226 Difference]: Without dead ends: 155189 [2025-03-08 02:12:59,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:12:59,063 INFO L435 NwaCegarLoop]: 278 mSDtfsCounter, 767 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2899 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 3188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 2899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-08 02:12:59,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 394 Invalid, 3188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 2899 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-08 02:12:59,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155189 states. [2025-03-08 02:13:00,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155189 to 141141. [2025-03-08 02:13:00,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141141 states, 141140 states have (on average 1.092355108403004) internal successors, (154175), 141140 states have internal predecessors, (154175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:13:00,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141141 states to 141141 states and 154175 transitions. [2025-03-08 02:13:00,906 INFO L78 Accepts]: Start accepts. Automaton has 141141 states and 154175 transitions. Word has length 544 [2025-03-08 02:13:00,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:13:00,907 INFO L471 AbstractCegarLoop]: Abstraction has 141141 states and 154175 transitions. [2025-03-08 02:13:00,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:13:00,907 INFO L276 IsEmpty]: Start isEmpty. Operand 141141 states and 154175 transitions. [2025-03-08 02:13:00,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2025-03-08 02:13:00,923 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:13:00,923 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:13:00,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-08 02:13:00,924 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:13:00,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:13:00,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1078435244, now seen corresponding path program 1 times [2025-03-08 02:13:00,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:13:00,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518295398] [2025-03-08 02:13:00,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:13:00,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:13:00,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 557 statements into 1 equivalence classes. [2025-03-08 02:13:01,007 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 557 of 557 statements. [2025-03-08 02:13:01,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:13:01,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:13:01,521 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 475 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2025-03-08 02:13:01,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:13:01,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518295398] [2025-03-08 02:13:01,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518295398] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:13:01,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:13:01,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:13:01,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494585035] [2025-03-08 02:13:01,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:13:01,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:13:01,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:13:01,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:13:01,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:13:01,523 INFO L87 Difference]: Start difference. First operand 141141 states and 154175 transitions. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:13:03,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:13:03,463 INFO L93 Difference]: Finished difference Result 315142 states and 344309 transitions. [2025-03-08 02:13:03,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:13:03,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 557 [2025-03-08 02:13:03,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:13:03,680 INFO L225 Difference]: With dead ends: 315142 [2025-03-08 02:13:03,680 INFO L226 Difference]: Without dead ends: 174003 [2025-03-08 02:13:03,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:13:03,748 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 314 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-08 02:13:03,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 281 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-08 02:13:03,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174003 states. [2025-03-08 02:13:05,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174003 to 169271. [2025-03-08 02:13:05,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169271 states, 169270 states have (on average 1.0882672653157677) internal successors, (184211), 169270 states have internal predecessors, (184211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:13:05,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169271 states to 169271 states and 184211 transitions. [2025-03-08 02:13:05,834 INFO L78 Accepts]: Start accepts. Automaton has 169271 states and 184211 transitions. Word has length 557 [2025-03-08 02:13:05,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:13:05,835 INFO L471 AbstractCegarLoop]: Abstraction has 169271 states and 184211 transitions. [2025-03-08 02:13:05,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:13:05,835 INFO L276 IsEmpty]: Start isEmpty. Operand 169271 states and 184211 transitions. [2025-03-08 02:13:05,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2025-03-08 02:13:05,849 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:13:05,849 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:13:05,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-08 02:13:05,850 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:13:05,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:13:05,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1256194441, now seen corresponding path program 1 times [2025-03-08 02:13:05,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:13:05,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138322672] [2025-03-08 02:13:05,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:13:05,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:13:05,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 576 statements into 1 equivalence classes. [2025-03-08 02:13:05,937 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 576 of 576 statements. [2025-03-08 02:13:05,937 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:13:05,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:13:06,612 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 515 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2025-03-08 02:13:06,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:13:06,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138322672] [2025-03-08 02:13:06,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138322672] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:13:06,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:13:06,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 02:13:06,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097679471] [2025-03-08 02:13:06,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:13:06,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 02:13:06,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:13:06,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 02:13:06,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:13:06,614 INFO L87 Difference]: Start difference. First operand 169271 states and 184211 transitions. Second operand has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:13:09,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:13:09,310 INFO L93 Difference]: Finished difference Result 361936 states and 393262 transitions. [2025-03-08 02:13:09,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 02:13:09,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 576 [2025-03-08 02:13:09,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:13:09,547 INFO L225 Difference]: With dead ends: 361936 [2025-03-08 02:13:09,547 INFO L226 Difference]: Without dead ends: 193092 [2025-03-08 02:13:09,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:13:09,633 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 755 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 2831 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 3143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 2831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-08 02:13:09,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 356 Invalid, 3143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 2831 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-08 02:13:09,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193092 states. [2025-03-08 02:13:11,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193092 to 174369. [2025-03-08 02:13:11,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174369 states, 174368 states have (on average 1.0855776289227381) internal successors, (189290), 174368 states have internal predecessors, (189290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:13:11,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174369 states to 174369 states and 189290 transitions. [2025-03-08 02:13:11,629 INFO L78 Accepts]: Start accepts. Automaton has 174369 states and 189290 transitions. Word has length 576 [2025-03-08 02:13:11,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:13:11,629 INFO L471 AbstractCegarLoop]: Abstraction has 174369 states and 189290 transitions. [2025-03-08 02:13:11,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:13:11,629 INFO L276 IsEmpty]: Start isEmpty. Operand 174369 states and 189290 transitions. [2025-03-08 02:13:11,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2025-03-08 02:13:11,640 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:13:11,641 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:13:11,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-08 02:13:11,641 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:13:11,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:13:11,641 INFO L85 PathProgramCache]: Analyzing trace with hash 461061581, now seen corresponding path program 1 times [2025-03-08 02:13:11,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:13:11,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619949804] [2025-03-08 02:13:11,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:13:11,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:13:11,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 599 statements into 1 equivalence classes. [2025-03-08 02:13:11,693 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 599 of 599 statements. [2025-03-08 02:13:11,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:13:11,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat