./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem03_label07.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 a8eb1c549e735c3cffa39c2cb57907d032185b5da86f8481f430bf75e1d2a903 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 00:59:19,043 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 00:59:19,107 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 00:59:19,112 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 00:59:19,112 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 00:59:19,132 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 00:59:19,134 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 00:59:19,134 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 00:59:19,135 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 00:59:19,135 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 00:59:19,135 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 00:59:19,136 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 00:59:19,136 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 00:59:19,136 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 00:59:19,136 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 00:59:19,136 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 00:59:19,136 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 00:59:19,136 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 00:59:19,136 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 00:59:19,137 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 00:59:19,137 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 00:59:19,137 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 00:59:19,137 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 00:59:19,137 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 00:59:19,137 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 00:59:19,137 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 00:59:19,137 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 00:59:19,138 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 00:59:19,138 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 00:59:19,138 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 00:59:19,138 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 00:59:19,138 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 00:59:19,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 00:59:19,138 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 00:59:19,138 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 00:59:19,138 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 00:59:19,138 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 00:59:19,138 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 00:59:19,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 00:59:19,138 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 00:59:19,138 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 00:59:19,138 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 00:59:19,138 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 00:59:19,138 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 -> a8eb1c549e735c3cffa39c2cb57907d032185b5da86f8481f430bf75e1d2a903 [2025-03-08 00:59:19,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 00:59:19,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 00:59:19,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 00:59:19,404 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 00:59:19,404 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 00:59:19,405 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label07.c [2025-03-08 00:59:20,571 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/417d951a7/b458040f68624b3ab7664ac08eb124f2/FLAGbc4210123 [2025-03-08 00:59:21,001 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 00:59:21,002 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label07.c [2025-03-08 00:59:21,018 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/417d951a7/b458040f68624b3ab7664ac08eb124f2/FLAGbc4210123 [2025-03-08 00:59:21,156 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/417d951a7/b458040f68624b3ab7664ac08eb124f2 [2025-03-08 00:59:21,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 00:59:21,159 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 00:59:21,160 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 00:59:21,160 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 00:59:21,163 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 00:59:21,164 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 12:59:21" (1/1) ... [2025-03-08 00:59:21,164 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c952fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:59:21, skipping insertion in model container [2025-03-08 00:59:21,164 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 12:59:21" (1/1) ... [2025-03-08 00:59:21,207 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 00:59:21,506 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label07.c[57439,57452] [2025-03-08 00:59:21,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 00:59:21,543 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 00:59:21,655 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label07.c[57439,57452] [2025-03-08 00:59:21,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 00:59:21,690 INFO L204 MainTranslator]: Completed translation [2025-03-08 00:59:21,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:59:21 WrapperNode [2025-03-08 00:59:21,690 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 00:59:21,691 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 00:59:21,691 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 00:59:21,691 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 00:59:21,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:59:21" (1/1) ... [2025-03-08 00:59:21,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:59:21" (1/1) ... [2025-03-08 00:59:21,794 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1769 [2025-03-08 00:59:21,794 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 00:59:21,794 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 00:59:21,795 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 00:59:21,795 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 00:59:21,803 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:59:21" (1/1) ... [2025-03-08 00:59:21,804 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:59:21" (1/1) ... [2025-03-08 00:59:21,817 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:59:21" (1/1) ... [2025-03-08 00:59:21,855 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 00:59:21,855 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:59:21" (1/1) ... [2025-03-08 00:59:21,856 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:59:21" (1/1) ... [2025-03-08 00:59:21,885 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:59:21" (1/1) ... [2025-03-08 00:59:21,895 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:59:21" (1/1) ... [2025-03-08 00:59:21,899 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:59:21" (1/1) ... [2025-03-08 00:59:21,904 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:59:21" (1/1) ... [2025-03-08 00:59:21,913 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 00:59:21,915 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 00:59:21,915 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 00:59:21,915 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 00:59:21,916 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:59:21" (1/1) ... [2025-03-08 00:59:21,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 00:59:21,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:59:21,943 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 00:59:21,948 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 00:59:21,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 00:59:21,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 00:59:21,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 00:59:21,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 00:59:22,028 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 00:59:22,029 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 00:59:23,630 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2025-03-08 00:59:23,631 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 00:59:23,648 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 00:59:23,650 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 00:59:23,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 12:59:23 BoogieIcfgContainer [2025-03-08 00:59:23,651 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 00:59:23,652 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 00:59:23,653 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 00:59:23,656 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 00:59:23,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 12:59:21" (1/3) ... [2025-03-08 00:59:23,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f204550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 12:59:23, skipping insertion in model container [2025-03-08 00:59:23,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:59:21" (2/3) ... [2025-03-08 00:59:23,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f204550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 12:59:23, skipping insertion in model container [2025-03-08 00:59:23,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 12:59:23" (3/3) ... [2025-03-08 00:59:23,658 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem03_label07.c [2025-03-08 00:59:23,669 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 00:59:23,672 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem03_label07.c that has 1 procedures, 302 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 00:59:23,738 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 00:59:23,753 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;@620f84a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 00:59:23,754 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 00:59:23,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.7266666666666666) internal successors, (518), 301 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:23,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-08 00:59:23,777 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:59:23,778 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:23,779 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:59:23,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:59:23,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1907487336, now seen corresponding path program 1 times [2025-03-08 00:59:23,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:59:23,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730518244] [2025-03-08 00:59:23,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:59:23,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:59:23,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-08 00:59:24,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-08 00:59:24,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:59:24,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:59:24,601 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 00:59:24,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:59:24,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730518244] [2025-03-08 00:59:24,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730518244] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:59:24,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:59:24,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 00:59:24,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510547135] [2025-03-08 00:59:24,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:59:24,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 00:59:24,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:59:24,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 00:59:24,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 00:59:24,628 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.7266666666666666) internal successors, (518), 301 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:25,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:59:25,513 INFO L93 Difference]: Finished difference Result 810 states and 1442 transitions. [2025-03-08 00:59:25,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 00:59:25,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2025-03-08 00:59:25,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:59:25,522 INFO L225 Difference]: With dead ends: 810 [2025-03-08 00:59:25,522 INFO L226 Difference]: Without dead ends: 444 [2025-03-08 00:59:25,526 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 00:59:25,529 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 82 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 00:59:25,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 231 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 00:59:25,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2025-03-08 00:59:25,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2025-03-08 00:59:25,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 1.4288939051918736) internal successors, (633), 443 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 633 transitions. [2025-03-08 00:59:25,578 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 633 transitions. Word has length 172 [2025-03-08 00:59:25,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:59:25,578 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 633 transitions. [2025-03-08 00:59:25,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:25,579 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 633 transitions. [2025-03-08 00:59:25,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2025-03-08 00:59:25,581 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:59:25,581 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:25,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 00:59:25,582 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:59:25,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:59:25,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1463558978, now seen corresponding path program 1 times [2025-03-08 00:59:25,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:59:25,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742634619] [2025-03-08 00:59:25,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:59:25,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:59:25,647 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-08 00:59:25,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-08 00:59:25,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:59:25,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:59:25,782 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 00:59:25,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:59:25,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742634619] [2025-03-08 00:59:25,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742634619] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:59:25,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:59:25,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 00:59:25,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750925671] [2025-03-08 00:59:25,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:59:25,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 00:59:25,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:59:25,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 00:59:25,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 00:59:25,787 INFO L87 Difference]: Start difference. First operand 444 states and 633 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:26,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:59:26,509 INFO L93 Difference]: Finished difference Result 1312 states and 1878 transitions. [2025-03-08 00:59:26,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 00:59:26,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2025-03-08 00:59:26,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:59:26,512 INFO L225 Difference]: With dead ends: 1312 [2025-03-08 00:59:26,512 INFO L226 Difference]: Without dead ends: 870 [2025-03-08 00:59:26,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 00:59:26,514 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 00:59:26,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 91 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 00:59:26,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2025-03-08 00:59:26,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 856. [2025-03-08 00:59:26,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 1.3953216374269006) internal successors, (1193), 855 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:26,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1193 transitions. [2025-03-08 00:59:26,541 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1193 transitions. Word has length 180 [2025-03-08 00:59:26,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:59:26,541 INFO L471 AbstractCegarLoop]: Abstraction has 856 states and 1193 transitions. [2025-03-08 00:59:26,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:26,541 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1193 transitions. [2025-03-08 00:59:26,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-08 00:59:26,546 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:59:26,547 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:26,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 00:59:26,547 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:59:26,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:59:26,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1633278467, now seen corresponding path program 1 times [2025-03-08 00:59:26,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:59:26,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656117064] [2025-03-08 00:59:26,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:59:26,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:59:26,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-08 00:59:26,621 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-08 00:59:26,621 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:59:26,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:59:26,804 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 00:59:26,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:59:26,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656117064] [2025-03-08 00:59:26,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656117064] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:59:26,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:59:26,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 00:59:26,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177556129] [2025-03-08 00:59:26,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:59:26,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 00:59:26,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:59:26,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 00:59:26,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 00:59:26,810 INFO L87 Difference]: Start difference. First operand 856 states and 1193 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:27,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:59:27,482 INFO L93 Difference]: Finished difference Result 2535 states and 3535 transitions. [2025-03-08 00:59:27,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 00:59:27,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2025-03-08 00:59:27,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:59:27,488 INFO L225 Difference]: With dead ends: 2535 [2025-03-08 00:59:27,488 INFO L226 Difference]: Without dead ends: 1681 [2025-03-08 00:59:27,489 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 00:59:27,490 INFO L435 NwaCegarLoop]: 325 mSDtfsCounter, 106 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 00:59:27,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 351 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 00:59:27,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2025-03-08 00:59:27,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1679. [2025-03-08 00:59:27,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1679 states, 1678 states have (on average 1.3206197854588797) internal successors, (2216), 1678 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:27,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 2216 transitions. [2025-03-08 00:59:27,520 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 2216 transitions. Word has length 187 [2025-03-08 00:59:27,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:59:27,520 INFO L471 AbstractCegarLoop]: Abstraction has 1679 states and 2216 transitions. [2025-03-08 00:59:27,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:27,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 2216 transitions. [2025-03-08 00:59:27,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2025-03-08 00:59:27,523 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:59:27,524 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:27,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 00:59:27,524 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:59:27,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:59:27,525 INFO L85 PathProgramCache]: Analyzing trace with hash 188551165, now seen corresponding path program 1 times [2025-03-08 00:59:27,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:59:27,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006782512] [2025-03-08 00:59:27,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:59:27,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:59:27,550 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 193 statements into 1 equivalence classes. [2025-03-08 00:59:27,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 193 of 193 statements. [2025-03-08 00:59:27,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:59:27,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:59:27,737 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 00:59:27,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:59:27,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006782512] [2025-03-08 00:59:27,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006782512] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:59:27,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:59:27,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 00:59:27,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127660276] [2025-03-08 00:59:27,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:59:27,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 00:59:27,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:59:27,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 00:59:27,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 00:59:27,740 INFO L87 Difference]: Start difference. First operand 1679 states and 2216 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:28,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:59:28,404 INFO L93 Difference]: Finished difference Result 4172 states and 5682 transitions. [2025-03-08 00:59:28,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 00:59:28,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2025-03-08 00:59:28,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:59:28,413 INFO L225 Difference]: With dead ends: 4172 [2025-03-08 00:59:28,413 INFO L226 Difference]: Without dead ends: 2495 [2025-03-08 00:59:28,418 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 00:59:28,419 INFO L435 NwaCegarLoop]: 378 mSDtfsCounter, 237 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 00:59:28,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 406 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 00:59:28,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2025-03-08 00:59:28,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2493. [2025-03-08 00:59:28,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2493 states, 2492 states have (on average 1.2740770465489566) internal successors, (3175), 2492 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:28,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 3175 transitions. [2025-03-08 00:59:28,486 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 3175 transitions. Word has length 193 [2025-03-08 00:59:28,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:59:28,487 INFO L471 AbstractCegarLoop]: Abstraction has 2493 states and 3175 transitions. [2025-03-08 00:59:28,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:28,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 3175 transitions. [2025-03-08 00:59:28,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2025-03-08 00:59:28,494 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:59:28,494 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:28,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 00:59:28,494 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:59:28,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:59:28,495 INFO L85 PathProgramCache]: Analyzing trace with hash 2006434580, now seen corresponding path program 1 times [2025-03-08 00:59:28,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:59:28,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954215784] [2025-03-08 00:59:28,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:59:28,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:59:28,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 197 statements into 1 equivalence classes. [2025-03-08 00:59:28,528 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 197 of 197 statements. [2025-03-08 00:59:28,528 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:59:28,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:59:28,770 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 00:59:28,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:59:28,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954215784] [2025-03-08 00:59:28,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954215784] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:59:28,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:59:28,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 00:59:28,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76752882] [2025-03-08 00:59:28,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:59:28,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 00:59:28,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:59:28,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 00:59:28,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 00:59:28,771 INFO L87 Difference]: Start difference. First operand 2493 states and 3175 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:29,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:59:29,577 INFO L93 Difference]: Finished difference Result 7391 states and 9410 transitions. [2025-03-08 00:59:29,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 00:59:29,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2025-03-08 00:59:29,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:59:29,592 INFO L225 Difference]: With dead ends: 7391 [2025-03-08 00:59:29,593 INFO L226 Difference]: Without dead ends: 4900 [2025-03-08 00:59:29,596 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 00:59:29,597 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 495 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 00:59:29,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 56 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 00:59:29,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4900 states. [2025-03-08 00:59:29,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4900 to 4900. [2025-03-08 00:59:29,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4900 states, 4899 states have (on average 1.1671769748928353) internal successors, (5718), 4899 states have internal predecessors, (5718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:29,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4900 states to 4900 states and 5718 transitions. [2025-03-08 00:59:29,710 INFO L78 Accepts]: Start accepts. Automaton has 4900 states and 5718 transitions. Word has length 197 [2025-03-08 00:59:29,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:59:29,710 INFO L471 AbstractCegarLoop]: Abstraction has 4900 states and 5718 transitions. [2025-03-08 00:59:29,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:29,710 INFO L276 IsEmpty]: Start isEmpty. Operand 4900 states and 5718 transitions. [2025-03-08 00:59:29,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2025-03-08 00:59:29,714 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:59:29,715 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:29,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 00:59:29,715 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:59:29,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:59:29,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1683413199, now seen corresponding path program 1 times [2025-03-08 00:59:29,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:59:29,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320840203] [2025-03-08 00:59:29,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:59:29,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:59:29,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 199 statements into 1 equivalence classes. [2025-03-08 00:59:29,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 199 of 199 statements. [2025-03-08 00:59:29,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:59:29,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:59:29,908 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 00:59:29,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:59:29,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320840203] [2025-03-08 00:59:29,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320840203] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:59:29,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:59:29,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 00:59:29,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219719091] [2025-03-08 00:59:29,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:59:29,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 00:59:29,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:59:29,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 00:59:29,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 00:59:29,913 INFO L87 Difference]: Start difference. First operand 4900 states and 5718 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:30,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:59:30,944 INFO L93 Difference]: Finished difference Result 19181 states and 22422 transitions. [2025-03-08 00:59:30,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 00:59:30,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2025-03-08 00:59:30,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:59:30,986 INFO L225 Difference]: With dead ends: 19181 [2025-03-08 00:59:30,986 INFO L226 Difference]: Without dead ends: 14283 [2025-03-08 00:59:30,994 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 00:59:30,995 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 873 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-08 00:59:30,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 69 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-08 00:59:31,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14283 states. [2025-03-08 00:59:31,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14283 to 14279. [2025-03-08 00:59:31,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14279 states, 14278 states have (on average 1.164518840173694) internal successors, (16627), 14278 states have internal predecessors, (16627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:31,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14279 states to 14279 states and 16627 transitions. [2025-03-08 00:59:31,279 INFO L78 Accepts]: Start accepts. Automaton has 14279 states and 16627 transitions. Word has length 199 [2025-03-08 00:59:31,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:59:31,279 INFO L471 AbstractCegarLoop]: Abstraction has 14279 states and 16627 transitions. [2025-03-08 00:59:31,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:31,280 INFO L276 IsEmpty]: Start isEmpty. Operand 14279 states and 16627 transitions. [2025-03-08 00:59:31,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2025-03-08 00:59:31,287 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:59:31,287 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:31,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 00:59:31,287 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:59:31,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:59:31,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1169391654, now seen corresponding path program 1 times [2025-03-08 00:59:31,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:59:31,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674741416] [2025-03-08 00:59:31,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:59:31,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:59:31,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 210 statements into 1 equivalence classes. [2025-03-08 00:59:31,323 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 210 of 210 statements. [2025-03-08 00:59:31,323 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:59:31,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:59:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-08 00:59:31,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:59:31,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674741416] [2025-03-08 00:59:31,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674741416] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:59:31,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:59:31,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 00:59:31,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186523845] [2025-03-08 00:59:31,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:59:31,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 00:59:31,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:59:31,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 00:59:31,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 00:59:31,527 INFO L87 Difference]: Start difference. First operand 14279 states and 16627 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:32,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:59:32,290 INFO L93 Difference]: Finished difference Result 35903 states and 41709 transitions. [2025-03-08 00:59:32,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 00:59:32,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2025-03-08 00:59:32,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:59:32,333 INFO L225 Difference]: With dead ends: 35903 [2025-03-08 00:59:32,333 INFO L226 Difference]: Without dead ends: 21626 [2025-03-08 00:59:32,351 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 00:59:32,351 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 207 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 00:59:32,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 79 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 00:59:32,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21626 states. [2025-03-08 00:59:32,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21626 to 21621. [2025-03-08 00:59:32,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21621 states, 21620 states have (on average 1.158418131359852) internal successors, (25045), 21620 states have internal predecessors, (25045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:32,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21621 states to 21621 states and 25045 transitions. [2025-03-08 00:59:32,677 INFO L78 Accepts]: Start accepts. Automaton has 21621 states and 25045 transitions. Word has length 210 [2025-03-08 00:59:32,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:59:32,678 INFO L471 AbstractCegarLoop]: Abstraction has 21621 states and 25045 transitions. [2025-03-08 00:59:32,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:32,678 INFO L276 IsEmpty]: Start isEmpty. Operand 21621 states and 25045 transitions. [2025-03-08 00:59:32,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2025-03-08 00:59:32,686 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:59:32,686 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:32,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 00:59:32,686 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:59:32,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:59:32,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1329088929, now seen corresponding path program 1 times [2025-03-08 00:59:32,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:59:32,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682108873] [2025-03-08 00:59:32,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:59:32,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:59:32,714 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 217 statements into 1 equivalence classes. [2025-03-08 00:59:32,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 217 of 217 statements. [2025-03-08 00:59:32,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:59:32,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:59:33,005 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-08 00:59:33,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:59:33,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682108873] [2025-03-08 00:59:33,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682108873] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:59:33,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501742298] [2025-03-08 00:59:33,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:59:33,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:59:33,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:59:33,008 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:59:33,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 00:59:33,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 217 statements into 1 equivalence classes. [2025-03-08 00:59:33,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 217 of 217 statements. [2025-03-08 00:59:33,129 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:59:33,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:59:33,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 00:59:33,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:59:33,365 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-08 00:59:33,366 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 00:59:33,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501742298] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:59:33,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 00:59:33,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2025-03-08 00:59:33,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394687505] [2025-03-08 00:59:33,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:59:33,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 00:59:33,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:59:33,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 00:59:33,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 00:59:33,368 INFO L87 Difference]: Start difference. First operand 21621 states and 25045 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:34,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:59:34,028 INFO L93 Difference]: Finished difference Result 43237 states and 50085 transitions. [2025-03-08 00:59:34,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 00:59:34,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2025-03-08 00:59:34,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:59:34,068 INFO L225 Difference]: With dead ends: 43237 [2025-03-08 00:59:34,069 INFO L226 Difference]: Without dead ends: 21618 [2025-03-08 00:59:34,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 00:59:34,089 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 80 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 00:59:34,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 94 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 00:59:34,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21618 states. [2025-03-08 00:59:34,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21618 to 21618. [2025-03-08 00:59:34,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21618 states, 21617 states have (on average 1.1332284775870842) internal successors, (24497), 21617 states have internal predecessors, (24497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:34,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21618 states to 21618 states and 24497 transitions. [2025-03-08 00:59:34,482 INFO L78 Accepts]: Start accepts. Automaton has 21618 states and 24497 transitions. Word has length 217 [2025-03-08 00:59:34,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:59:34,482 INFO L471 AbstractCegarLoop]: Abstraction has 21618 states and 24497 transitions. [2025-03-08 00:59:34,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:34,483 INFO L276 IsEmpty]: Start isEmpty. Operand 21618 states and 24497 transitions. [2025-03-08 00:59:34,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2025-03-08 00:59:34,493 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:59:34,493 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:34,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 00:59:34,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:59:34,695 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:59:34,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:59:34,696 INFO L85 PathProgramCache]: Analyzing trace with hash 2121960693, now seen corresponding path program 1 times [2025-03-08 00:59:34,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:59:34,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859939707] [2025-03-08 00:59:34,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:59:34,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:59:34,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 221 statements into 1 equivalence classes. [2025-03-08 00:59:34,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 221 of 221 statements. [2025-03-08 00:59:34,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:59:34,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:59:34,862 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 00:59:34,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:59:34,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859939707] [2025-03-08 00:59:34,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859939707] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:59:34,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:59:34,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 00:59:34,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891008454] [2025-03-08 00:59:34,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:59:34,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 00:59:34,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:59:34,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 00:59:34,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 00:59:34,864 INFO L87 Difference]: Start difference. First operand 21618 states and 24497 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:35,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:59:35,733 INFO L93 Difference]: Finished difference Result 59301 states and 67203 transitions. [2025-03-08 00:59:35,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 00:59:35,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2025-03-08 00:59:35,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:59:35,813 INFO L225 Difference]: With dead ends: 59301 [2025-03-08 00:59:35,813 INFO L226 Difference]: Without dead ends: 37685 [2025-03-08 00:59:35,843 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 00:59:35,844 INFO L435 NwaCegarLoop]: 361 mSDtfsCounter, 193 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 00:59:35,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 381 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 00:59:35,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37685 states. [2025-03-08 00:59:36,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37685 to 37667. [2025-03-08 00:59:36,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37667 states, 37666 states have (on average 1.1176392502522168) internal successors, (42097), 37666 states have internal predecessors, (42097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:36,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37667 states to 37667 states and 42097 transitions. [2025-03-08 00:59:36,351 INFO L78 Accepts]: Start accepts. Automaton has 37667 states and 42097 transitions. Word has length 221 [2025-03-08 00:59:36,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:59:36,351 INFO L471 AbstractCegarLoop]: Abstraction has 37667 states and 42097 transitions. [2025-03-08 00:59:36,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:36,351 INFO L276 IsEmpty]: Start isEmpty. Operand 37667 states and 42097 transitions. [2025-03-08 00:59:36,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2025-03-08 00:59:36,365 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:59:36,365 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:36,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 00:59:36,365 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:59:36,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:59:36,366 INFO L85 PathProgramCache]: Analyzing trace with hash -877659044, now seen corresponding path program 1 times [2025-03-08 00:59:36,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:59:36,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444223475] [2025-03-08 00:59:36,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:59:36,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:59:36,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 241 statements into 1 equivalence classes. [2025-03-08 00:59:36,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 241 of 241 statements. [2025-03-08 00:59:36,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:59:36,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:59:36,554 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 00:59:36,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:59:36,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444223475] [2025-03-08 00:59:36,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444223475] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:59:36,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:59:36,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 00:59:36,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201082000] [2025-03-08 00:59:36,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:59:36,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 00:59:36,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:59:36,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 00:59:36,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 00:59:36,557 INFO L87 Difference]: Start difference. First operand 37667 states and 42097 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:37,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:59:37,654 INFO L93 Difference]: Finished difference Result 111718 states and 124007 transitions. [2025-03-08 00:59:37,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 00:59:37,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2025-03-08 00:59:37,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:59:37,755 INFO L225 Difference]: With dead ends: 111718 [2025-03-08 00:59:37,755 INFO L226 Difference]: Without dead ends: 74047 [2025-03-08 00:59:37,791 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 00:59:37,792 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 547 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 00:59:37,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 436 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 00:59:37,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74047 states. [2025-03-08 00:59:38,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74047 to 73633. [2025-03-08 00:59:38,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73633 states, 73632 states have (on average 1.1027134941329857) internal successors, (81195), 73632 states have internal predecessors, (81195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:38,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73633 states to 73633 states and 81195 transitions. [2025-03-08 00:59:38,832 INFO L78 Accepts]: Start accepts. Automaton has 73633 states and 81195 transitions. Word has length 241 [2025-03-08 00:59:38,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:59:38,833 INFO L471 AbstractCegarLoop]: Abstraction has 73633 states and 81195 transitions. [2025-03-08 00:59:38,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:38,833 INFO L276 IsEmpty]: Start isEmpty. Operand 73633 states and 81195 transitions. [2025-03-08 00:59:38,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2025-03-08 00:59:38,854 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:59:38,854 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:38,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 00:59:38,854 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:59:38,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:59:38,855 INFO L85 PathProgramCache]: Analyzing trace with hash 696275469, now seen corresponding path program 1 times [2025-03-08 00:59:38,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:59:38,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369704807] [2025-03-08 00:59:38,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:59:38,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:59:38,904 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 253 statements into 1 equivalence classes. [2025-03-08 00:59:38,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 253 of 253 statements. [2025-03-08 00:59:38,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:59:38,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:59:39,111 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 00:59:39,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:59:39,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369704807] [2025-03-08 00:59:39,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369704807] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:59:39,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:59:39,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 00:59:39,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43625756] [2025-03-08 00:59:39,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:59:39,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 00:59:39,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:59:39,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 00:59:39,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 00:59:39,114 INFO L87 Difference]: Start difference. First operand 73633 states and 81195 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:40,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:59:40,335 INFO L93 Difference]: Finished difference Result 189185 states and 208443 transitions. [2025-03-08 00:59:40,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 00:59:40,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2025-03-08 00:59:40,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:59:40,510 INFO L225 Difference]: With dead ends: 189185 [2025-03-08 00:59:40,510 INFO L226 Difference]: Without dead ends: 115554 [2025-03-08 00:59:40,561 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 00:59:40,562 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 159 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 00:59:40,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 153 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 00:59:40,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115554 states. [2025-03-08 00:59:41,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115554 to 112698. [2025-03-08 00:59:41,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112698 states, 112697 states have (on average 1.1027800207636405) internal successors, (124280), 112697 states have internal predecessors, (124280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:41,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112698 states to 112698 states and 124280 transitions. [2025-03-08 00:59:41,976 INFO L78 Accepts]: Start accepts. Automaton has 112698 states and 124280 transitions. Word has length 253 [2025-03-08 00:59:41,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:59:41,977 INFO L471 AbstractCegarLoop]: Abstraction has 112698 states and 124280 transitions. [2025-03-08 00:59:41,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:41,977 INFO L276 IsEmpty]: Start isEmpty. Operand 112698 states and 124280 transitions. [2025-03-08 00:59:41,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2025-03-08 00:59:41,994 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:59:41,994 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:59:41,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 00:59:41,994 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:59:41,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:59:41,995 INFO L85 PathProgramCache]: Analyzing trace with hash 926030440, now seen corresponding path program 1 times [2025-03-08 00:59:41,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:59:41,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682922224] [2025-03-08 00:59:41,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:59:41,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:59:42,021 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 260 statements into 1 equivalence classes. [2025-03-08 00:59:42,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 260 of 260 statements. [2025-03-08 00:59:42,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:59:42,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:59:43,250 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 88 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 00:59:43,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:59:43,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682922224] [2025-03-08 00:59:43,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682922224] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:59:43,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123238454] [2025-03-08 00:59:43,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:59:43,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:59:43,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:59:43,253 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:59:43,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 00:59:43,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 260 statements into 1 equivalence classes. [2025-03-08 00:59:43,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 260 of 260 statements. [2025-03-08 00:59:43,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:59:43,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:59:43,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 00:59:43,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:59:43,491 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-08 00:59:43,491 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 00:59:43,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123238454] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:59:43,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 00:59:43,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2025-03-08 00:59:43,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077308349] [2025-03-08 00:59:43,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:59:43,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 00:59:43,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:59:43,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 00:59:43,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 00:59:43,492 INFO L87 Difference]: Start difference. First operand 112698 states and 124280 transitions. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 2 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:44,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:59:44,621 INFO L93 Difference]: Finished difference Result 255524 states and 282465 transitions. [2025-03-08 00:59:44,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 00:59:44,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 2 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 260 [2025-03-08 00:59:44,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:59:44,976 INFO L225 Difference]: With dead ends: 255524 [2025-03-08 00:59:44,977 INFO L226 Difference]: Without dead ends: 142828 [2025-03-08 00:59:45,029 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 00:59:45,030 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 152 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 00:59:45,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 164 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 00:59:45,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142828 states. [2025-03-08 00:59:46,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142828 to 125085. [2025-03-08 00:59:46,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125085 states, 125084 states have (on average 1.105688977007451) internal successors, (138304), 125084 states have internal predecessors, (138304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:46,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125085 states to 125085 states and 138304 transitions. [2025-03-08 00:59:46,779 INFO L78 Accepts]: Start accepts. Automaton has 125085 states and 138304 transitions. Word has length 260 [2025-03-08 00:59:46,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:59:46,779 INFO L471 AbstractCegarLoop]: Abstraction has 125085 states and 138304 transitions. [2025-03-08 00:59:46,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 2 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:46,780 INFO L276 IsEmpty]: Start isEmpty. Operand 125085 states and 138304 transitions. [2025-03-08 00:59:46,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2025-03-08 00:59:46,802 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:59:46,802 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:46,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 00:59:47,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-08 00:59:47,006 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:59:47,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:59:47,006 INFO L85 PathProgramCache]: Analyzing trace with hash -683599766, now seen corresponding path program 1 times [2025-03-08 00:59:47,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:59:47,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600806352] [2025-03-08 00:59:47,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:59:47,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:59:47,072 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 274 statements into 1 equivalence classes. [2025-03-08 00:59:47,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 274 of 274 statements. [2025-03-08 00:59:47,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:59:47,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:59:47,357 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 00:59:47,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:59:47,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600806352] [2025-03-08 00:59:47,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600806352] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:59:47,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:59:47,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 00:59:47,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817751165] [2025-03-08 00:59:47,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:59:47,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 00:59:47,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:59:47,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 00:59:47,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 00:59:47,359 INFO L87 Difference]: Start difference. First operand 125085 states and 138304 transitions. Second operand has 4 states, 4 states have (on average 68.5) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:49,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:59:49,091 INFO L93 Difference]: Finished difference Result 264035 states and 292741 transitions. [2025-03-08 00:59:49,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 00:59:49,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 274 [2025-03-08 00:59:49,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:59:49,299 INFO L225 Difference]: With dead ends: 264035 [2025-03-08 00:59:49,299 INFO L226 Difference]: Without dead ends: 138952 [2025-03-08 00:59:49,366 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 00:59:49,367 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 466 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 00:59:49,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 80 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 00:59:49,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138952 states. [2025-03-08 00:59:50,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138952 to 133205. [2025-03-08 00:59:51,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133205 states, 133204 states have (on average 1.0908230984054532) internal successors, (145302), 133204 states have internal predecessors, (145302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:51,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133205 states to 133205 states and 145302 transitions. [2025-03-08 00:59:51,199 INFO L78 Accepts]: Start accepts. Automaton has 133205 states and 145302 transitions. Word has length 274 [2025-03-08 00:59:51,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:59:51,199 INFO L471 AbstractCegarLoop]: Abstraction has 133205 states and 145302 transitions. [2025-03-08 00:59:51,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:51,199 INFO L276 IsEmpty]: Start isEmpty. Operand 133205 states and 145302 transitions. [2025-03-08 00:59:51,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2025-03-08 00:59:51,220 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:59:51,220 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:59:51,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 00:59:51,221 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:59:51,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:59:51,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1730805894, now seen corresponding path program 1 times [2025-03-08 00:59:51,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:59:51,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955290923] [2025-03-08 00:59:51,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:59:51,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:59:51,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 286 statements into 1 equivalence classes. [2025-03-08 00:59:51,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 286 of 286 statements. [2025-03-08 00:59:51,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:59:51,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:59:51,782 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 75 proven. 6 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2025-03-08 00:59:51,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:59:51,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955290923] [2025-03-08 00:59:51,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955290923] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:59:51,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583413964] [2025-03-08 00:59:51,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:59:51,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:59:51,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:59:51,787 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:59:51,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 00:59:51,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 286 statements into 1 equivalence classes. [2025-03-08 00:59:51,910 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 286 of 286 statements. [2025-03-08 00:59:51,910 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:59:51,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:59:51,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 00:59:51,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:59:52,075 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-03-08 00:59:52,075 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 00:59:52,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583413964] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:59:52,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 00:59:52,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2025-03-08 00:59:52,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797793767] [2025-03-08 00:59:52,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:59:52,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 00:59:52,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:59:52,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 00:59:52,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 00:59:52,078 INFO L87 Difference]: Start difference. First operand 133205 states and 145302 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:53,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:59:53,257 INFO L93 Difference]: Finished difference Result 262585 states and 286414 transitions. [2025-03-08 00:59:53,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 00:59:53,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 286 [2025-03-08 00:59:53,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:59:53,442 INFO L225 Difference]: With dead ends: 262585 [2025-03-08 00:59:53,442 INFO L226 Difference]: Without dead ends: 128976 [2025-03-08 00:59:53,520 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 00:59:53,521 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 85 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 00:59:53,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 86 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 00:59:53,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128976 states. [2025-03-08 00:59:55,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128976 to 117164. [2025-03-08 00:59:55,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117164 states, 117163 states have (on average 1.0732483804614084) internal successors, (125745), 117163 states have internal predecessors, (125745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:55,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117164 states to 117164 states and 125745 transitions. [2025-03-08 00:59:55,245 INFO L78 Accepts]: Start accepts. Automaton has 117164 states and 125745 transitions. Word has length 286 [2025-03-08 00:59:55,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:59:55,245 INFO L471 AbstractCegarLoop]: Abstraction has 117164 states and 125745 transitions. [2025-03-08 00:59:55,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:55,245 INFO L276 IsEmpty]: Start isEmpty. Operand 117164 states and 125745 transitions. [2025-03-08 00:59:55,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-03-08 00:59:55,266 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:59:55,266 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:59:55,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 00:59:55,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:59:55,467 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:59:55,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:59:55,467 INFO L85 PathProgramCache]: Analyzing trace with hash 300658086, now seen corresponding path program 1 times [2025-03-08 00:59:55,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:59:55,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415205986] [2025-03-08 00:59:55,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:59:55,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:59:55,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-08 00:59:55,542 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-08 00:59:55,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:59:55,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:59:55,982 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 00:59:55,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:59:55,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415205986] [2025-03-08 00:59:55,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415205986] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:59:55,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:59:55,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 00:59:55,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969595847] [2025-03-08 00:59:55,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:59:55,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 00:59:55,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:59:55,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 00:59:55,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 00:59:55,983 INFO L87 Difference]: Start difference. First operand 117164 states and 125745 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:56,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:59:56,838 INFO L93 Difference]: Finished difference Result 232523 states and 249577 transitions. [2025-03-08 00:59:56,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 00:59:56,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 302 [2025-03-08 00:59:56,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:59:56,981 INFO L225 Difference]: With dead ends: 232523 [2025-03-08 00:59:56,981 INFO L226 Difference]: Without dead ends: 115361 [2025-03-08 00:59:57,048 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 00:59:57,049 INFO L435 NwaCegarLoop]: 278 mSDtfsCounter, 92 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 00:59:57,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 286 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 00:59:57,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115361 states. [2025-03-08 00:59:58,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115361 to 113307. [2025-03-08 00:59:58,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113307 states, 113306 states have (on average 1.0700580728293294) internal successors, (121244), 113306 states have internal predecessors, (121244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:58,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113307 states to 113307 states and 121244 transitions. [2025-03-08 00:59:58,516 INFO L78 Accepts]: Start accepts. Automaton has 113307 states and 121244 transitions. Word has length 302 [2025-03-08 00:59:58,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:59:58,516 INFO L471 AbstractCegarLoop]: Abstraction has 113307 states and 121244 transitions. [2025-03-08 00:59:58,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:59:58,517 INFO L276 IsEmpty]: Start isEmpty. Operand 113307 states and 121244 transitions. [2025-03-08 00:59:58,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2025-03-08 00:59:58,538 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:59:58,538 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:59:58,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 00:59:58,538 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:59:58,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:59:58,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1104297391, now seen corresponding path program 1 times [2025-03-08 00:59:58,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:59:58,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711485397] [2025-03-08 00:59:58,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:59:58,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:59:58,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 326 statements into 1 equivalence classes. [2025-03-08 00:59:58,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 326 of 326 statements. [2025-03-08 00:59:58,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:59:58,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:59:59,054 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 00:59:59,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:59:59,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711485397] [2025-03-08 00:59:59,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711485397] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:59:59,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:59:59,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 00:59:59,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690839172] [2025-03-08 00:59:59,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:59:59,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 00:59:59,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:59:59,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 00:59:59,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 00:59:59,057 INFO L87 Difference]: Start difference. First operand 113307 states and 121244 transitions. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:00:00,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:00:00,208 INFO L93 Difference]: Finished difference Result 247548 states and 265241 transitions. [2025-03-08 01:00:00,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:00:00,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 326 [2025-03-08 01:00:00,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:00:00,668 INFO L225 Difference]: With dead ends: 247548 [2025-03-08 01:00:00,668 INFO L226 Difference]: Without dead ends: 134243 [2025-03-08 01:00:00,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:00:00,747 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 107 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 01:00:00,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 141 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 01:00:00,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134243 states. [2025-03-08 01:00:02,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134243 to 130985. [2025-03-08 01:00:02,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130985 states, 130984 states have (on average 1.0690084285103525) internal successors, (140023), 130984 states have internal predecessors, (140023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:00:02,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130985 states to 130985 states and 140023 transitions. [2025-03-08 01:00:02,252 INFO L78 Accepts]: Start accepts. Automaton has 130985 states and 140023 transitions. Word has length 326 [2025-03-08 01:00:02,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:00:02,252 INFO L471 AbstractCegarLoop]: Abstraction has 130985 states and 140023 transitions. [2025-03-08 01:00:02,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:00:02,252 INFO L276 IsEmpty]: Start isEmpty. Operand 130985 states and 140023 transitions. [2025-03-08 01:00:02,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2025-03-08 01:00:02,281 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:00:02,281 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:00:02,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 01:00:02,281 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:00:02,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:00:02,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2091372730, now seen corresponding path program 1 times [2025-03-08 01:00:02,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:00:02,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690577472] [2025-03-08 01:00:02,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:00:02,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:00:02,548 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 358 statements into 1 equivalence classes. [2025-03-08 01:00:02,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 358 of 358 statements. [2025-03-08 01:00:02,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:00:02,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:00:03,530 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 234 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 01:00:03,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:00:03,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690577472] [2025-03-08 01:00:03,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690577472] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 01:00:03,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527159601] [2025-03-08 01:00:03,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:00:03,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 01:00:03,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 01:00:03,533 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 01:00:03,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 01:00:03,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 358 statements into 1 equivalence classes. [2025-03-08 01:00:03,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 358 of 358 statements. [2025-03-08 01:00:03,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:00:03,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:00:03,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 01:00:03,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 01:00:04,730 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2025-03-08 01:00:04,730 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 01:00:04,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527159601] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:00:04,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 01:00:04,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2025-03-08 01:00:04,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760181084] [2025-03-08 01:00:04,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:00:04,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 01:00:04,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:00:04,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 01:00:04,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 01:00:04,731 INFO L87 Difference]: Start difference. First operand 130985 states and 140023 transitions. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:00:06,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:00:06,491 INFO L93 Difference]: Finished difference Result 383233 states and 410213 transitions. [2025-03-08 01:00:06,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 01:00:06,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 358 [2025-03-08 01:00:06,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:00:07,164 INFO L225 Difference]: With dead ends: 383233 [2025-03-08 01:00:07,164 INFO L226 Difference]: Without dead ends: 252250 [2025-03-08 01:00:07,259 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 01:00:07,260 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 531 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 01:00:07,260 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 250 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 01:00:07,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252250 states. [2025-03-08 01:00:10,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252250 to 239030. [2025-03-08 01:00:10,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239030 states, 239029 states have (on average 1.0697906948529259) internal successors, (255711), 239029 states have internal predecessors, (255711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:00:10,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239030 states to 239030 states and 255711 transitions. [2025-03-08 01:00:10,887 INFO L78 Accepts]: Start accepts. Automaton has 239030 states and 255711 transitions. Word has length 358 [2025-03-08 01:00:10,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:00:10,888 INFO L471 AbstractCegarLoop]: Abstraction has 239030 states and 255711 transitions. [2025-03-08 01:00:10,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:00:10,888 INFO L276 IsEmpty]: Start isEmpty. Operand 239030 states and 255711 transitions. [2025-03-08 01:00:10,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2025-03-08 01:00:10,938 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:00:10,939 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:00:10,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 01:00:11,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-08 01:00:11,139 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:00:11,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:00:11,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1939499962, now seen corresponding path program 1 times [2025-03-08 01:00:11,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:00:11,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132899874] [2025-03-08 01:00:11,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:00:11,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:00:11,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 366 statements into 1 equivalence classes. [2025-03-08 01:00:11,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 366 of 366 statements. [2025-03-08 01:00:11,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:00:11,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:00:11,625 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 109 proven. 6 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2025-03-08 01:00:11,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:00:11,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132899874] [2025-03-08 01:00:11,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132899874] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 01:00:11,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646355252] [2025-03-08 01:00:11,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:00:11,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 01:00:11,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 01:00:11,632 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 01:00:11,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 01:00:11,737 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 366 statements into 1 equivalence classes. [2025-03-08 01:00:11,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 366 of 366 statements. [2025-03-08 01:00:11,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:00:11,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:00:11,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 01:00:11,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 01:00:12,170 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2025-03-08 01:00:12,170 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 01:00:12,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646355252] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:00:12,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 01:00:12,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2025-03-08 01:00:12,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523509493] [2025-03-08 01:00:12,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:00:12,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:00:12,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:00:12,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:00:12,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 01:00:12,171 INFO L87 Difference]: Start difference. First operand 239030 states and 255711 transitions. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 2 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:00:13,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:00:13,735 INFO L93 Difference]: Finished difference Result 478034 states and 511396 transitions. [2025-03-08 01:00:13,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:00:13,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 2 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 366 [2025-03-08 01:00:13,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:00:14,049 INFO L225 Difference]: With dead ends: 478034 [2025-03-08 01:00:14,049 INFO L226 Difference]: Without dead ends: 239006 [2025-03-08 01:00:14,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 01:00:14,120 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 274 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 01:00:14,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 28 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 01:00:14,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239006 states.