./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2018/Problem10.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-rers2018/Problem10.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 aec1fafbe63132c51323898caadb7f7b777fc751b19e58e74eab1930ebd68833 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 02:24:46,816 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 02:24:46,871 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 02:24:46,874 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 02:24:46,874 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 02:24:46,899 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 02:24:46,901 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 02:24:46,901 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 02:24:46,901 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 02:24:46,902 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 02:24:46,902 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 02:24:46,902 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 02:24:46,903 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 02:24:46,903 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 02:24:46,903 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 02:24:46,903 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 02:24:46,903 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 02:24:46,903 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 02:24:46,903 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 02:24:46,903 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 02:24:46,903 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 02:24:46,903 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 02:24:46,904 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 02:24:46,904 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 02:24:46,904 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 02:24:46,904 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 02:24:46,904 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 02:24:46,904 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 02:24:46,904 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 02:24:46,904 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 02:24:46,904 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 02:24:46,904 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 02:24:46,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 02:24:46,905 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 02:24:46,905 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 02:24:46,905 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 02:24:46,905 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 02:24:46,905 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 02:24:46,906 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 02:24:46,906 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 02:24:46,906 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 02:24:46,906 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 02:24:46,906 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 02:24:46,906 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 -> aec1fafbe63132c51323898caadb7f7b777fc751b19e58e74eab1930ebd68833 [2025-03-08 02:24:47,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 02:24:47,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 02:24:47,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 02:24:47,130 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 02:24:47,130 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 02:24:47,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2018/Problem10.c [2025-03-08 02:24:48,280 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c81e3a557/b97526ecc7a142ce8abf90db867931c3/FLAG755a80881 [2025-03-08 02:24:48,569 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 02:24:48,569 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2018/Problem10.c [2025-03-08 02:24:48,588 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c81e3a557/b97526ecc7a142ce8abf90db867931c3/FLAG755a80881 [2025-03-08 02:24:48,848 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c81e3a557/b97526ecc7a142ce8abf90db867931c3 [2025-03-08 02:24:48,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 02:24:48,851 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 02:24:48,853 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 02:24:48,853 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 02:24:48,856 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 02:24:48,856 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 02:24:48" (1/1) ... [2025-03-08 02:24:48,857 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43208eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:24:48, skipping insertion in model container [2025-03-08 02:24:48,857 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 02:24:48" (1/1) ... [2025-03-08 02:24:48,891 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 02:24:48,990 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-rers2018/Problem10.c[778,791] [2025-03-08 02:24:48,995 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-rers2018/Problem10.c[817,830] [2025-03-08 02:24:49,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 02:24:49,240 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 02:24:49,247 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-rers2018/Problem10.c[778,791] [2025-03-08 02:24:49,247 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-rers2018/Problem10.c[817,830] [2025-03-08 02:24:49,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 02:24:49,376 INFO L204 MainTranslator]: Completed translation [2025-03-08 02:24:49,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:24:49 WrapperNode [2025-03-08 02:24:49,377 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 02:24:49,378 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 02:24:49,378 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 02:24:49,378 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 02:24:49,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:24:49" (1/1) ... [2025-03-08 02:24:49,397 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:24:49" (1/1) ... [2025-03-08 02:24:49,434 INFO L138 Inliner]: procedures = 274, calls = 248, calls flagged for inlining = 144, calls inlined = 144, statements flattened = 863 [2025-03-08 02:24:49,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 02:24:49,435 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 02:24:49,435 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 02:24:49,436 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 02:24:49,442 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:24:49" (1/1) ... [2025-03-08 02:24:49,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:24:49" (1/1) ... [2025-03-08 02:24:49,446 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:24:49" (1/1) ... [2025-03-08 02:24:49,466 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 02:24:49,467 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:24:49" (1/1) ... [2025-03-08 02:24:49,467 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:24:49" (1/1) ... [2025-03-08 02:24:49,484 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:24:49" (1/1) ... [2025-03-08 02:24:49,487 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:24:49" (1/1) ... [2025-03-08 02:24:49,488 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:24:49" (1/1) ... [2025-03-08 02:24:49,494 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:24:49" (1/1) ... [2025-03-08 02:24:49,503 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 02:24:49,503 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 02:24:49,503 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 02:24:49,503 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 02:24:49,504 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:24:49" (1/1) ... [2025-03-08 02:24:49,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 02:24:49,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:24:49,530 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 02:24:49,534 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 02:24:49,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 02:24:49,555 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_a [2025-03-08 02:24:49,555 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_a [2025-03-08 02:24:49,555 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_b [2025-03-08 02:24:49,555 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_b [2025-03-08 02:24:49,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 02:24:49,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 02:24:49,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 02:24:49,642 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 02:24:49,643 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 02:24:50,528 INFO L? ?]: Removed 109 outVars from TransFormulas that were not future-live. [2025-03-08 02:24:50,529 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 02:24:50,551 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 02:24:50,551 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 02:24:50,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 02:24:50 BoogieIcfgContainer [2025-03-08 02:24:50,551 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 02:24:50,553 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 02:24:50,553 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 02:24:50,557 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 02:24:50,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 02:24:48" (1/3) ... [2025-03-08 02:24:50,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2068d349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 02:24:50, skipping insertion in model container [2025-03-08 02:24:50,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:24:49" (2/3) ... [2025-03-08 02:24:50,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2068d349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 02:24:50, skipping insertion in model container [2025-03-08 02:24:50,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 02:24:50" (3/3) ... [2025-03-08 02:24:50,560 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem10.c [2025-03-08 02:24:50,571 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 02:24:50,573 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem10.c that has 3 procedures, 468 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2025-03-08 02:24:50,630 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 02:24:50,638 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;@65d0c167, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 02:24:50,638 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-08 02:24:50,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 468 states, 363 states have (on average 1.5895316804407713) internal successors, (577), 365 states have internal predecessors, (577), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-08 02:24:50,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-08 02:24:50,650 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:24:50,651 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:24:50,651 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:24:50,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:24:50,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1206176998, now seen corresponding path program 1 times [2025-03-08 02:24:50,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:24:50,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485944206] [2025-03-08 02:24:50,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:24:50,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:24:50,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-08 02:24:50,734 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-08 02:24:50,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:24:50,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:24:50,839 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 02:24:50,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:24:50,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485944206] [2025-03-08 02:24:50,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485944206] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:24:50,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:24:50,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:24:50,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970224406] [2025-03-08 02:24:50,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:24:50,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 02:24:50,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:24:50,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 02:24:50,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:24:50,860 INFO L87 Difference]: Start difference. First operand has 468 states, 363 states have (on average 1.5895316804407713) internal successors, (577), 365 states have internal predecessors, (577), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:51,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:24:51,765 INFO L93 Difference]: Finished difference Result 1165 states and 2065 transitions. [2025-03-08 02:24:51,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 02:24:51,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-08 02:24:51,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:24:51,783 INFO L225 Difference]: With dead ends: 1165 [2025-03-08 02:24:51,783 INFO L226 Difference]: Without dead ends: 690 [2025-03-08 02:24:51,790 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 02:24:51,792 INFO L435 NwaCegarLoop]: 416 mSDtfsCounter, 579 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 02:24:51,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 648 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 02:24:51,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2025-03-08 02:24:51,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 557. [2025-03-08 02:24:51,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 455 states have (on average 1.589010989010989) internal successors, (723), 554 states have internal predecessors, (723), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:51,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 823 transitions. [2025-03-08 02:24:51,871 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 823 transitions. Word has length 13 [2025-03-08 02:24:51,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:24:51,872 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 823 transitions. [2025-03-08 02:24:51,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:51,872 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 823 transitions. [2025-03-08 02:24:51,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-03-08 02:24:51,873 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:24:51,873 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] [2025-03-08 02:24:51,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 02:24:51,874 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:24:51,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:24:51,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1531299744, now seen corresponding path program 1 times [2025-03-08 02:24:51,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:24:51,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162705953] [2025-03-08 02:24:51,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:24:51,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:24:51,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-08 02:24:51,892 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 02:24:51,892 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:24:51,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:24:51,952 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 02:24:51,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:24:51,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162705953] [2025-03-08 02:24:51,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162705953] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:24:51,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:24:51,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:24:51,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133970245] [2025-03-08 02:24:51,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:24:51,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 02:24:51,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:24:51,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 02:24:51,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:24:51,955 INFO L87 Difference]: Start difference. First operand 557 states and 823 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:52,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:24:52,569 INFO L93 Difference]: Finished difference Result 1704 states and 2582 transitions. [2025-03-08 02:24:52,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 02:24:52,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-03-08 02:24:52,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:24:52,575 INFO L225 Difference]: With dead ends: 1704 [2025-03-08 02:24:52,576 INFO L226 Difference]: Without dead ends: 1149 [2025-03-08 02:24:52,577 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 02:24:52,578 INFO L435 NwaCegarLoop]: 539 mSDtfsCounter, 855 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 02:24:52,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 1121 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 02:24:52,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2025-03-08 02:24:52,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 888. [2025-03-08 02:24:52,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 786 states have (on average 1.5521628498727735) internal successors, (1220), 885 states have internal predecessors, (1220), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:52,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1320 transitions. [2025-03-08 02:24:52,618 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1320 transitions. Word has length 21 [2025-03-08 02:24:52,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:24:52,619 INFO L471 AbstractCegarLoop]: Abstraction has 888 states and 1320 transitions. [2025-03-08 02:24:52,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:52,619 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1320 transitions. [2025-03-08 02:24:52,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-03-08 02:24:52,620 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:24:52,620 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] [2025-03-08 02:24:52,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 02:24:52,621 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:24:52,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:24:52,621 INFO L85 PathProgramCache]: Analyzing trace with hash 929003697, now seen corresponding path program 1 times [2025-03-08 02:24:52,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:24:52,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39163457] [2025-03-08 02:24:52,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:24:52,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:24:52,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-08 02:24:52,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-08 02:24:52,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:24:52,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:24:52,724 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 02:24:52,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:24:52,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39163457] [2025-03-08 02:24:52,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39163457] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:24:52,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:24:52,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:24:52,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549217575] [2025-03-08 02:24:52,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:24:52,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:24:52,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:24:52,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:24:52,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:24:52,726 INFO L87 Difference]: Start difference. First operand 888 states and 1320 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:53,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:24:53,181 INFO L93 Difference]: Finished difference Result 2208 states and 3348 transitions. [2025-03-08 02:24:53,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:24:53,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2025-03-08 02:24:53,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:24:53,189 INFO L225 Difference]: With dead ends: 2208 [2025-03-08 02:24:53,189 INFO L226 Difference]: Without dead ends: 1322 [2025-03-08 02:24:53,190 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 02:24:53,193 INFO L435 NwaCegarLoop]: 654 mSDtfsCounter, 309 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 02:24:53,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 799 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 02:24:53,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2025-03-08 02:24:53,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 998. [2025-03-08 02:24:53,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 896 states have (on average 1.4397321428571428) internal successors, (1290), 995 states have internal predecessors, (1290), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:53,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1390 transitions. [2025-03-08 02:24:53,231 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1390 transitions. Word has length 24 [2025-03-08 02:24:53,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:24:53,231 INFO L471 AbstractCegarLoop]: Abstraction has 998 states and 1390 transitions. [2025-03-08 02:24:53,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:53,231 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1390 transitions. [2025-03-08 02:24:53,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-03-08 02:24:53,233 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:24:53,233 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] [2025-03-08 02:24:53,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 02:24:53,233 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:24:53,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:24:53,234 INFO L85 PathProgramCache]: Analyzing trace with hash 635600690, now seen corresponding path program 1 times [2025-03-08 02:24:53,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:24:53,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015785510] [2025-03-08 02:24:53,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:24:53,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:24:53,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-08 02:24:53,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-08 02:24:53,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:24:53,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:24:53,294 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 02:24:53,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:24:53,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015785510] [2025-03-08 02:24:53,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015785510] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:24:53,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:24:53,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 02:24:53,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667510561] [2025-03-08 02:24:53,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:24:53,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:24:53,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:24:53,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:24:53,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:24:53,295 INFO L87 Difference]: Start difference. First operand 998 states and 1390 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:53,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:24:53,391 INFO L93 Difference]: Finished difference Result 2953 states and 4123 transitions. [2025-03-08 02:24:53,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:24:53,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2025-03-08 02:24:53,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:24:53,398 INFO L225 Difference]: With dead ends: 2953 [2025-03-08 02:24:53,398 INFO L226 Difference]: Without dead ends: 1957 [2025-03-08 02:24:53,400 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 02:24:53,400 INFO L435 NwaCegarLoop]: 550 mSDtfsCounter, 510 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 02:24:53,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 1073 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 02:24:53,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2025-03-08 02:24:53,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1869. [2025-03-08 02:24:53,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1767 states have (on average 1.425580079230334) internal successors, (2519), 1866 states have internal predecessors, (2519), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:53,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2619 transitions. [2025-03-08 02:24:53,445 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2619 transitions. Word has length 24 [2025-03-08 02:24:53,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:24:53,445 INFO L471 AbstractCegarLoop]: Abstraction has 1869 states and 2619 transitions. [2025-03-08 02:24:53,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:53,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2619 transitions. [2025-03-08 02:24:53,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-08 02:24:53,446 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:24:53,446 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] [2025-03-08 02:24:53,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 02:24:53,446 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:24:53,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:24:53,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1771640634, now seen corresponding path program 1 times [2025-03-08 02:24:53,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:24:53,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525111314] [2025-03-08 02:24:53,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:24:53,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:24:53,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-08 02:24:53,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 02:24:53,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:24:53,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:24:53,488 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 02:24:53,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:24:53,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525111314] [2025-03-08 02:24:53,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525111314] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:24:53,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:24:53,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 02:24:53,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797936499] [2025-03-08 02:24:53,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:24:53,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:24:53,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:24:53,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:24:53,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:24:53,504 INFO L87 Difference]: Start difference. First operand 1869 states and 2619 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:53,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:24:53,577 INFO L93 Difference]: Finished difference Result 5531 states and 7759 transitions. [2025-03-08 02:24:53,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:24:53,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-03-08 02:24:53,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:24:53,588 INFO L225 Difference]: With dead ends: 5531 [2025-03-08 02:24:53,588 INFO L226 Difference]: Without dead ends: 3664 [2025-03-08 02:24:53,591 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 02:24:53,592 INFO L435 NwaCegarLoop]: 558 mSDtfsCounter, 532 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 02:24:53,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1093 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 02:24:53,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3664 states. [2025-03-08 02:24:53,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3664 to 3564. [2025-03-08 02:24:53,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3564 states, 3462 states have (on average 1.4246100519930676) internal successors, (4932), 3561 states have internal predecessors, (4932), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:53,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 5032 transitions. [2025-03-08 02:24:53,655 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 5032 transitions. Word has length 25 [2025-03-08 02:24:53,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:24:53,655 INFO L471 AbstractCegarLoop]: Abstraction has 3564 states and 5032 transitions. [2025-03-08 02:24:53,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:53,655 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 5032 transitions. [2025-03-08 02:24:53,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-08 02:24:53,656 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:24:53,656 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] [2025-03-08 02:24:53,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 02:24:53,656 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:24:53,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:24:53,657 INFO L85 PathProgramCache]: Analyzing trace with hash 913287666, now seen corresponding path program 1 times [2025-03-08 02:24:53,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:24:53,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411424978] [2025-03-08 02:24:53,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:24:53,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:24:53,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-08 02:24:53,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 02:24:53,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:24:53,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:24:53,705 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 02:24:53,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:24:53,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411424978] [2025-03-08 02:24:53,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411424978] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:24:53,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:24:53,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 02:24:53,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678135673] [2025-03-08 02:24:53,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:24:53,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:24:53,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:24:53,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:24:53,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:24:53,708 INFO L87 Difference]: Start difference. First operand 3564 states and 5032 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:53,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:24:53,788 INFO L93 Difference]: Finished difference Result 10633 states and 15005 transitions. [2025-03-08 02:24:53,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:24:53,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-03-08 02:24:53,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:24:53,807 INFO L225 Difference]: With dead ends: 10633 [2025-03-08 02:24:53,808 INFO L226 Difference]: Without dead ends: 7071 [2025-03-08 02:24:53,813 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 02:24:53,815 INFO L435 NwaCegarLoop]: 563 mSDtfsCounter, 533 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 02:24:53,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 1111 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 02:24:53,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states. [2025-03-08 02:24:53,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 6970. [2025-03-08 02:24:53,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6970 states, 6868 states have (on average 1.4199184624344787) internal successors, (9752), 6967 states have internal predecessors, (9752), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:53,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6970 states to 6970 states and 9852 transitions. [2025-03-08 02:24:53,928 INFO L78 Accepts]: Start accepts. Automaton has 6970 states and 9852 transitions. Word has length 26 [2025-03-08 02:24:53,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:24:53,928 INFO L471 AbstractCegarLoop]: Abstraction has 6970 states and 9852 transitions. [2025-03-08 02:24:53,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:53,928 INFO L276 IsEmpty]: Start isEmpty. Operand 6970 states and 9852 transitions. [2025-03-08 02:24:53,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-08 02:24:53,930 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:24:53,930 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] [2025-03-08 02:24:53,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 02:24:53,930 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:24:53,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:24:53,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1125443284, now seen corresponding path program 1 times [2025-03-08 02:24:53,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:24:53,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201801666] [2025-03-08 02:24:53,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:24:53,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:24:53,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-08 02:24:53,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 02:24:53,943 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:24:53,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:24:53,979 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 02:24:53,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:24:53,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201801666] [2025-03-08 02:24:53,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201801666] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:24:53,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:24:53,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:24:53,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420602097] [2025-03-08 02:24:53,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:24:53,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:24:53,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:24:53,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:24:53,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:24:53,981 INFO L87 Difference]: Start difference. First operand 6970 states and 9852 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:54,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:24:54,050 INFO L93 Difference]: Finished difference Result 7076 states and 9954 transitions. [2025-03-08 02:24:54,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:24:54,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-03-08 02:24:54,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:24:54,071 INFO L225 Difference]: With dead ends: 7076 [2025-03-08 02:24:54,072 INFO L226 Difference]: Without dead ends: 7069 [2025-03-08 02:24:54,075 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 02:24:54,076 INFO L435 NwaCegarLoop]: 1106 mSDtfsCounter, 548 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 02:24:54,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 1654 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 02:24:54,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7069 states. [2025-03-08 02:24:54,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7069 to 6968. [2025-03-08 02:24:54,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6968 states, 6868 states have (on average 1.4164239953407105) internal successors, (9728), 6965 states have internal predecessors, (9728), 98 states have call successors, (98), 2 states have call predecessors, (98), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:54,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6968 states to 6968 states and 9826 transitions. [2025-03-08 02:24:54,210 INFO L78 Accepts]: Start accepts. Automaton has 6968 states and 9826 transitions. Word has length 26 [2025-03-08 02:24:54,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:24:54,210 INFO L471 AbstractCegarLoop]: Abstraction has 6968 states and 9826 transitions. [2025-03-08 02:24:54,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:54,210 INFO L276 IsEmpty]: Start isEmpty. Operand 6968 states and 9826 transitions. [2025-03-08 02:24:54,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-08 02:24:54,212 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:24:54,212 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] [2025-03-08 02:24:54,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 02:24:54,212 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:24:54,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:24:54,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1482372277, now seen corresponding path program 1 times [2025-03-08 02:24:54,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:24:54,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293460984] [2025-03-08 02:24:54,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:24:54,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:24:54,219 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-08 02:24:54,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 02:24:54,228 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:24:54,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:24:54,271 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 02:24:54,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:24:54,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293460984] [2025-03-08 02:24:54,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293460984] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:24:54,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:24:54,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 02:24:54,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151459640] [2025-03-08 02:24:54,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:24:54,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:24:54,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:24:54,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:24:54,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:24:54,272 INFO L87 Difference]: Start difference. First operand 6968 states and 9826 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:54,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:24:54,453 INFO L93 Difference]: Finished difference Result 16993 states and 23985 transitions. [2025-03-08 02:24:54,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:24:54,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-03-08 02:24:54,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:24:54,487 INFO L225 Difference]: With dead ends: 16993 [2025-03-08 02:24:54,488 INFO L226 Difference]: Without dead ends: 10027 [2025-03-08 02:24:54,498 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 02:24:54,499 INFO L435 NwaCegarLoop]: 538 mSDtfsCounter, 436 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 02:24:54,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 1001 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 02:24:54,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10027 states. [2025-03-08 02:24:54,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10027 to 9948. [2025-03-08 02:24:54,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9948 states, 9848 states have (on average 1.4006904955320878) internal successors, (13794), 9945 states have internal predecessors, (13794), 98 states have call successors, (98), 2 states have call predecessors, (98), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9948 states to 9948 states and 13892 transitions. [2025-03-08 02:24:54,656 INFO L78 Accepts]: Start accepts. Automaton has 9948 states and 13892 transitions. Word has length 28 [2025-03-08 02:24:54,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:24:54,656 INFO L471 AbstractCegarLoop]: Abstraction has 9948 states and 13892 transitions. [2025-03-08 02:24:54,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:54,656 INFO L276 IsEmpty]: Start isEmpty. Operand 9948 states and 13892 transitions. [2025-03-08 02:24:54,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-08 02:24:54,657 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:24:54,657 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] [2025-03-08 02:24:54,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 02:24:54,657 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:24:54,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:24:54,658 INFO L85 PathProgramCache]: Analyzing trace with hash -794509033, now seen corresponding path program 1 times [2025-03-08 02:24:54,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:24:54,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274220203] [2025-03-08 02:24:54,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:24:54,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:24:54,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-08 02:24:54,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 02:24:54,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:24:54,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:24:54,686 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 02:24:54,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:24:54,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274220203] [2025-03-08 02:24:54,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274220203] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:24:54,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:24:54,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:24:54,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946906969] [2025-03-08 02:24:54,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:24:54,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:24:54,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:24:54,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:24:54,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:24:54,687 INFO L87 Difference]: Start difference. First operand 9948 states and 13892 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:54,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:24:54,905 INFO L93 Difference]: Finished difference Result 23033 states and 32381 transitions. [2025-03-08 02:24:54,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:24:54,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-03-08 02:24:54,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:24:54,935 INFO L225 Difference]: With dead ends: 23033 [2025-03-08 02:24:54,935 INFO L226 Difference]: Without dead ends: 16067 [2025-03-08 02:24:54,949 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 02:24:54,952 INFO L435 NwaCegarLoop]: 983 mSDtfsCounter, 452 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 02:24:54,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 1448 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 02:24:54,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16067 states. [2025-03-08 02:24:55,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16067 to 15900. [2025-03-08 02:24:55,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15900 states, 15800 states have (on average 1.3846835443037975) internal successors, (21878), 15897 states have internal predecessors, (21878), 98 states have call successors, (98), 2 states have call predecessors, (98), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:55,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15900 states to 15900 states and 21976 transitions. [2025-03-08 02:24:55,182 INFO L78 Accepts]: Start accepts. Automaton has 15900 states and 21976 transitions. Word has length 28 [2025-03-08 02:24:55,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:24:55,183 INFO L471 AbstractCegarLoop]: Abstraction has 15900 states and 21976 transitions. [2025-03-08 02:24:55,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:55,187 INFO L276 IsEmpty]: Start isEmpty. Operand 15900 states and 21976 transitions. [2025-03-08 02:24:55,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-08 02:24:55,187 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:24:55,187 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] [2025-03-08 02:24:55,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 02:24:55,188 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:24:55,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:24:55,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1291533242, now seen corresponding path program 1 times [2025-03-08 02:24:55,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:24:55,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446700710] [2025-03-08 02:24:55,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:24:55,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:24:55,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-08 02:24:55,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-08 02:24:55,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:24:55,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:24:55,233 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 02:24:55,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:24:55,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446700710] [2025-03-08 02:24:55,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446700710] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:24:55,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:24:55,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 02:24:55,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522355000] [2025-03-08 02:24:55,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:24:55,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:24:55,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:24:55,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:24:55,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:24:55,235 INFO L87 Difference]: Start difference. First operand 15900 states and 21976 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:55,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:24:55,514 INFO L93 Difference]: Finished difference Result 46397 states and 64205 transitions. [2025-03-08 02:24:55,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:24:55,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2025-03-08 02:24:55,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:24:55,571 INFO L225 Difference]: With dead ends: 46397 [2025-03-08 02:24:55,571 INFO L226 Difference]: Without dead ends: 30499 [2025-03-08 02:24:55,597 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 02:24:55,598 INFO L435 NwaCegarLoop]: 529 mSDtfsCounter, 462 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 02:24:55,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 991 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 02:24:55,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30499 states. [2025-03-08 02:24:55,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30499 to 30426. [2025-03-08 02:24:56,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30426 states, 30326 states have (on average 1.3632526544878982) internal successors, (41342), 30423 states have internal predecessors, (41342), 98 states have call successors, (98), 2 states have call predecessors, (98), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:56,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30426 states to 30426 states and 41440 transitions. [2025-03-08 02:24:56,082 INFO L78 Accepts]: Start accepts. Automaton has 30426 states and 41440 transitions. Word has length 29 [2025-03-08 02:24:56,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:24:56,083 INFO L471 AbstractCegarLoop]: Abstraction has 30426 states and 41440 transitions. [2025-03-08 02:24:56,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:56,083 INFO L276 IsEmpty]: Start isEmpty. Operand 30426 states and 41440 transitions. [2025-03-08 02:24:56,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-08 02:24:56,083 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:24:56,083 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] [2025-03-08 02:24:56,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 02:24:56,084 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:24:56,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:24:56,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1383260299, now seen corresponding path program 1 times [2025-03-08 02:24:56,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:24:56,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680734903] [2025-03-08 02:24:56,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:24:56,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:24:56,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-08 02:24:56,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-08 02:24:56,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:24:56,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:24:56,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 02:24:56,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:24:56,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680734903] [2025-03-08 02:24:56,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680734903] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:24:56,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:24:56,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:24:56,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922158737] [2025-03-08 02:24:56,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:24:56,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:24:56,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:24:56,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:24:56,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:24:56,122 INFO L87 Difference]: Start difference. First operand 30426 states and 41440 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:56,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:24:56,722 INFO L93 Difference]: Finished difference Result 71368 states and 98754 transitions. [2025-03-08 02:24:56,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:24:56,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-03-08 02:24:56,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:24:56,899 INFO L225 Difference]: With dead ends: 71368 [2025-03-08 02:24:56,899 INFO L226 Difference]: Without dead ends: 40944 [2025-03-08 02:24:56,915 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 02:24:56,916 INFO L435 NwaCegarLoop]: 513 mSDtfsCounter, 290 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 02:24:56,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 677 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 02:24:56,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40944 states. [2025-03-08 02:24:57,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40944 to 40940. [2025-03-08 02:24:57,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40940 states, 40840 states have (on average 1.3147894221351617) internal successors, (53696), 40937 states have internal predecessors, (53696), 98 states have call successors, (98), 2 states have call predecessors, (98), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:57,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40940 states to 40940 states and 53794 transitions. [2025-03-08 02:24:57,316 INFO L78 Accepts]: Start accepts. Automaton has 40940 states and 53794 transitions. Word has length 30 [2025-03-08 02:24:57,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:24:57,316 INFO L471 AbstractCegarLoop]: Abstraction has 40940 states and 53794 transitions. [2025-03-08 02:24:57,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:57,317 INFO L276 IsEmpty]: Start isEmpty. Operand 40940 states and 53794 transitions. [2025-03-08 02:24:57,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-03-08 02:24:57,317 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:24:57,317 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] [2025-03-08 02:24:57,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 02:24:57,317 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:24:57,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:24:57,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1069096902, now seen corresponding path program 1 times [2025-03-08 02:24:57,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:24:57,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437365826] [2025-03-08 02:24:57,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:24:57,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:24:57,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-08 02:24:57,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 02:24:57,330 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:24:57,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:24:57,359 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 02:24:57,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:24:57,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437365826] [2025-03-08 02:24:57,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437365826] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:24:57,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:24:57,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:24:57,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124115132] [2025-03-08 02:24:57,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:24:57,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:24:57,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:24:57,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:24:57,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:24:57,360 INFO L87 Difference]: Start difference. First operand 40940 states and 53794 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:57,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:24:57,831 INFO L93 Difference]: Finished difference Result 117795 states and 154921 transitions. [2025-03-08 02:24:57,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:24:57,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2025-03-08 02:24:57,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:24:57,974 INFO L225 Difference]: With dead ends: 117795 [2025-03-08 02:24:57,974 INFO L226 Difference]: Without dead ends: 76857 [2025-03-08 02:24:57,996 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 02:24:57,997 INFO L435 NwaCegarLoop]: 943 mSDtfsCounter, 504 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 02:24:57,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 1437 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 02:24:58,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76857 states. [2025-03-08 02:24:58,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76857 to 76768. [2025-03-08 02:24:58,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76768 states, 76668 states have (on average 1.296812229352533) internal successors, (99424), 76765 states have internal predecessors, (99424), 98 states have call successors, (98), 2 states have call predecessors, (98), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:58,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76768 states to 76768 states and 99522 transitions. [2025-03-08 02:24:58,957 INFO L78 Accepts]: Start accepts. Automaton has 76768 states and 99522 transitions. Word has length 33 [2025-03-08 02:24:58,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:24:58,958 INFO L471 AbstractCegarLoop]: Abstraction has 76768 states and 99522 transitions. [2025-03-08 02:24:58,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:58,958 INFO L276 IsEmpty]: Start isEmpty. Operand 76768 states and 99522 transitions. [2025-03-08 02:24:58,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-03-08 02:24:58,958 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:24:58,958 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] [2025-03-08 02:24:58,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 02:24:58,959 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:24:58,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:24:58,959 INFO L85 PathProgramCache]: Analyzing trace with hash 448921764, now seen corresponding path program 1 times [2025-03-08 02:24:58,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:24:58,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957633923] [2025-03-08 02:24:58,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:24:58,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:24:58,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-08 02:24:58,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 02:24:58,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:24:58,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:24:58,991 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 02:24:58,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:24:58,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957633923] [2025-03-08 02:24:58,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957633923] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:24:58,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:24:58,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:24:58,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091381198] [2025-03-08 02:24:58,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:24:58,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:24:58,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:24:58,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:24:58,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:24:58,992 INFO L87 Difference]: Start difference. First operand 76768 states and 99522 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:24:59,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:24:59,757 INFO L93 Difference]: Finished difference Result 157892 states and 202926 transitions. [2025-03-08 02:24:59,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:24:59,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2025-03-08 02:24:59,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:24:59,879 INFO L225 Difference]: With dead ends: 157892 [2025-03-08 02:24:59,880 INFO L226 Difference]: Without dead ends: 81126 [2025-03-08 02:24:59,915 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 02:24:59,916 INFO L435 NwaCegarLoop]: 540 mSDtfsCounter, 213 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 02:24:59,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 724 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 02:25:00,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81126 states. [2025-03-08 02:25:00,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81126 to 73837. [2025-03-08 02:25:00,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73837 states, 73737 states have (on average 1.2814869061665106) internal successors, (94493), 73834 states have internal predecessors, (94493), 98 states have call successors, (98), 2 states have call predecessors, (98), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:25:00,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73837 states to 73837 states and 94591 transitions. [2025-03-08 02:25:00,873 INFO L78 Accepts]: Start accepts. Automaton has 73837 states and 94591 transitions. Word has length 33 [2025-03-08 02:25:00,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:25:00,873 INFO L471 AbstractCegarLoop]: Abstraction has 73837 states and 94591 transitions. [2025-03-08 02:25:00,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:25:00,874 INFO L276 IsEmpty]: Start isEmpty. Operand 73837 states and 94591 transitions. [2025-03-08 02:25:00,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-03-08 02:25:00,874 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:25:00,874 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] [2025-03-08 02:25:00,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 02:25:00,874 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:25:00,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:25:00,875 INFO L85 PathProgramCache]: Analyzing trace with hash 2043375922, now seen corresponding path program 1 times [2025-03-08 02:25:00,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:25:00,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069389986] [2025-03-08 02:25:00,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:25:00,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:25:00,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-08 02:25:00,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-08 02:25:00,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:25:00,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:25:00,910 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 02:25:00,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:25:00,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069389986] [2025-03-08 02:25:00,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069389986] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:25:00,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:25:00,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:25:00,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073673488] [2025-03-08 02:25:00,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:25:00,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:25:00,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:25:00,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:25:00,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:25:00,911 INFO L87 Difference]: Start difference. First operand 73837 states and 94591 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:25:01,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:25:01,791 INFO L93 Difference]: Finished difference Result 182709 states and 234895 transitions. [2025-03-08 02:25:01,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:25:01,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2025-03-08 02:25:01,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:25:01,937 INFO L225 Difference]: With dead ends: 182709 [2025-03-08 02:25:01,938 INFO L226 Difference]: Without dead ends: 108874 [2025-03-08 02:25:01,976 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 02:25:01,976 INFO L435 NwaCegarLoop]: 519 mSDtfsCounter, 483 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 02:25:01,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 965 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 02:25:02,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108874 states. [2025-03-08 02:25:03,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108874 to 108557. [2025-03-08 02:25:03,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108557 states, 108457 states have (on average 1.2762016282950848) internal successors, (138413), 108554 states have internal predecessors, (138413), 98 states have call successors, (98), 2 states have call predecessors, (98), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:25:03,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108557 states to 108557 states and 138511 transitions. [2025-03-08 02:25:03,234 INFO L78 Accepts]: Start accepts. Automaton has 108557 states and 138511 transitions. Word has length 34 [2025-03-08 02:25:03,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:25:03,234 INFO L471 AbstractCegarLoop]: Abstraction has 108557 states and 138511 transitions. [2025-03-08 02:25:03,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:25:03,234 INFO L276 IsEmpty]: Start isEmpty. Operand 108557 states and 138511 transitions. [2025-03-08 02:25:03,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-08 02:25:03,234 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:25:03,234 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:25:03,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 02:25:03,234 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:25:03,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:25:03,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1729253882, now seen corresponding path program 1 times [2025-03-08 02:25:03,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:25:03,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437738474] [2025-03-08 02:25:03,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:25:03,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:25:03,241 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-08 02:25:03,250 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 02:25:03,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:25:03,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:25:03,273 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 02:25:03,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:25:03,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437738474] [2025-03-08 02:25:03,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437738474] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:25:03,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:25:03,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:25:03,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101602255] [2025-03-08 02:25:03,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:25:03,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:25:03,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:25:03,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:25:03,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:25:03,274 INFO L87 Difference]: Start difference. First operand 108557 states and 138511 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:25:03,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:25:03,915 INFO L93 Difference]: Finished difference Result 210132 states and 268147 transitions. [2025-03-08 02:25:03,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:25:03,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2025-03-08 02:25:03,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:25:04,191 INFO L225 Difference]: With dead ends: 210132 [2025-03-08 02:25:04,191 INFO L226 Difference]: Without dead ends: 210129 [2025-03-08 02:25:04,235 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 02:25:04,236 INFO L435 NwaCegarLoop]: 966 mSDtfsCounter, 527 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 02:25:04,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 1506 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 02:25:04,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210129 states. [2025-03-08 02:25:06,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210129 to 209793. [2025-03-08 02:25:06,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209793 states, 209693 states have (on average 1.2754312256489249) internal successors, (267449), 209790 states have internal predecessors, (267449), 98 states have call successors, (98), 2 states have call predecessors, (98), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:25:06,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209793 states to 209793 states and 267547 transitions. [2025-03-08 02:25:06,564 INFO L78 Accepts]: Start accepts. Automaton has 209793 states and 267547 transitions. Word has length 45 [2025-03-08 02:25:06,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:25:06,564 INFO L471 AbstractCegarLoop]: Abstraction has 209793 states and 267547 transitions. [2025-03-08 02:25:06,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:25:06,564 INFO L276 IsEmpty]: Start isEmpty. Operand 209793 states and 267547 transitions. [2025-03-08 02:25:06,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-03-08 02:25:06,564 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:25:06,564 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:25:06,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 02:25:06,565 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:25:06,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:25:06,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1886306446, now seen corresponding path program 1 times [2025-03-08 02:25:06,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:25:06,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067402956] [2025-03-08 02:25:06,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:25:06,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:25:06,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-08 02:25:06,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-08 02:25:06,575 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:25:06,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:25:06,605 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 02:25:06,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:25:06,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067402956] [2025-03-08 02:25:06,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067402956] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:25:06,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:25:06,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:25:06,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61452995] [2025-03-08 02:25:06,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:25:06,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 02:25:06,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:25:06,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 02:25:06,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 02:25:06,607 INFO L87 Difference]: Start difference. First operand 209793 states and 267547 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:25:08,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:25:08,854 INFO L93 Difference]: Finished difference Result 546873 states and 697542 transitions. [2025-03-08 02:25:08,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 02:25:08,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2025-03-08 02:25:08,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:25:09,336 INFO L225 Difference]: With dead ends: 546873 [2025-03-08 02:25:09,336 INFO L226 Difference]: Without dead ends: 337082 [2025-03-08 02:25:09,451 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 02:25:09,451 INFO L435 NwaCegarLoop]: 586 mSDtfsCounter, 745 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 02:25:09,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 727 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 02:25:09,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337082 states. [2025-03-08 02:25:11,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337082 to 209788. [2025-03-08 02:25:11,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209788 states, 209693 states have (on average 1.2598656130629062) internal successors, (264185), 209785 states have internal predecessors, (264185), 93 states have call successors, (93), 2 states have call predecessors, (93), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:25:12,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209788 states to 209788 states and 264278 transitions. [2025-03-08 02:25:12,422 INFO L78 Accepts]: Start accepts. Automaton has 209788 states and 264278 transitions. Word has length 48 [2025-03-08 02:25:12,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:25:12,422 INFO L471 AbstractCegarLoop]: Abstraction has 209788 states and 264278 transitions. [2025-03-08 02:25:12,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:25:12,422 INFO L276 IsEmpty]: Start isEmpty. Operand 209788 states and 264278 transitions. [2025-03-08 02:25:12,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-08 02:25:12,422 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:25:12,422 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:25:12,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 02:25:12,423 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:25:12,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:25:12,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1703757749, now seen corresponding path program 1 times [2025-03-08 02:25:12,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:25:12,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997273918] [2025-03-08 02:25:12,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:25:12,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:25:12,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-08 02:25:12,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-08 02:25:12,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:25:12,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:25:12,456 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 02:25:12,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:25:12,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997273918] [2025-03-08 02:25:12,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997273918] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:25:12,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:25:12,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 02:25:12,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060703889] [2025-03-08 02:25:12,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:25:12,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:25:12,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:25:12,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:25:12,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:25:12,458 INFO L87 Difference]: Start difference. First operand 209788 states and 264278 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:25:13,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:25:13,523 INFO L93 Difference]: Finished difference Result 303028 states and 380874 transitions. [2025-03-08 02:25:13,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:25:13,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2025-03-08 02:25:13,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:25:13,927 INFO L225 Difference]: With dead ends: 303028 [2025-03-08 02:25:13,927 INFO L226 Difference]: Without dead ends: 303022 [2025-03-08 02:25:13,988 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 02:25:13,988 INFO L435 NwaCegarLoop]: 529 mSDtfsCounter, 486 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 02:25:13,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 1048 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 02:25:14,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303022 states. [2025-03-08 02:25:16,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303022 to 302694. [2025-03-08 02:25:16,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302694 states, 302599 states have (on average 1.2550041474029987) internal successors, (379763), 302691 states have internal predecessors, (379763), 93 states have call successors, (93), 2 states have call predecessors, (93), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:25:17,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302694 states to 302694 states and 379856 transitions. [2025-03-08 02:25:17,128 INFO L78 Accepts]: Start accepts. Automaton has 302694 states and 379856 transitions. Word has length 62 [2025-03-08 02:25:17,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:25:17,129 INFO L471 AbstractCegarLoop]: Abstraction has 302694 states and 379856 transitions. [2025-03-08 02:25:17,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:25:17,129 INFO L276 IsEmpty]: Start isEmpty. Operand 302694 states and 379856 transitions. [2025-03-08 02:25:17,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-08 02:25:17,129 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:25:17,129 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:25:17,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 02:25:17,130 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:25:17,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:25:17,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1187919474, now seen corresponding path program 1 times [2025-03-08 02:25:17,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:25:17,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38987057] [2025-03-08 02:25:17,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:25:17,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:25:17,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-08 02:25:17,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-08 02:25:17,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:25:17,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:25:17,172 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 02:25:17,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:25:17,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38987057] [2025-03-08 02:25:17,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38987057] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:25:17,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:25:17,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:25:17,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922185465] [2025-03-08 02:25:17,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:25:17,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:25:17,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:25:17,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:25:17,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:25:17,173 INFO L87 Difference]: Start difference. First operand 302694 states and 379856 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:25:19,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:25:19,501 INFO L93 Difference]: Finished difference Result 542799 states and 682565 transitions. [2025-03-08 02:25:19,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:25:19,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2025-03-08 02:25:19,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:25:19,882 INFO L225 Difference]: With dead ends: 542799 [2025-03-08 02:25:19,882 INFO L226 Difference]: Without dead ends: 293839 [2025-03-08 02:25:20,004 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 02:25:20,005 INFO L435 NwaCegarLoop]: 286 mSDtfsCounter, 377 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 02:25:20,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 363 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 02:25:20,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293839 states. [2025-03-08 02:25:21,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293839 to 179003. [2025-03-08 02:25:21,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179003 states, 178908 states have (on average 1.2062456681646432) internal successors, (215807), 179000 states have internal predecessors, (215807), 93 states have call successors, (93), 2 states have call predecessors, (93), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:25:22,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179003 states to 179003 states and 215900 transitions. [2025-03-08 02:25:22,193 INFO L78 Accepts]: Start accepts. Automaton has 179003 states and 215900 transitions. Word has length 70 [2025-03-08 02:25:22,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:25:22,193 INFO L471 AbstractCegarLoop]: Abstraction has 179003 states and 215900 transitions. [2025-03-08 02:25:22,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:25:22,193 INFO L276 IsEmpty]: Start isEmpty. Operand 179003 states and 215900 transitions. [2025-03-08 02:25:22,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-03-08 02:25:22,194 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:25:22,194 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 02:25:22,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 02:25:22,194 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:25:22,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:25:22,194 INFO L85 PathProgramCache]: Analyzing trace with hash -750434874, now seen corresponding path program 1 times [2025-03-08 02:25:22,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:25:22,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856863591] [2025-03-08 02:25:22,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:25:22,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:25:22,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-08 02:25:22,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-08 02:25:22,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:25:22,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:25:22,245 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 02:25:22,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:25:22,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856863591] [2025-03-08 02:25:22,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856863591] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:25:22,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:25:22,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:25:22,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530400807] [2025-03-08 02:25:22,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:25:22,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:25:22,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:25:22,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:25:22,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:25:22,248 INFO L87 Difference]: Start difference. First operand 179003 states and 215900 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 02:25:23,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:25:23,392 INFO L93 Difference]: Finished difference Result 253719 states and 304328 transitions. [2025-03-08 02:25:23,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:25:23,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2025-03-08 02:25:23,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:25:23,722 INFO L225 Difference]: With dead ends: 253719 [2025-03-08 02:25:23,722 INFO L226 Difference]: Without dead ends: 253714 [2025-03-08 02:25:24,095 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 02:25:24,095 INFO L435 NwaCegarLoop]: 809 mSDtfsCounter, 445 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 02:25:24,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 1333 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 02:25:24,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253714 states.