./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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/seq-mthreaded/pals_floodmax.4.ufo.UNBOUNDED.pals.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 62204da2eab9fabc07e0a3780bac6c183714a9a5b9e2b6bd6a8ef0836349aca5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 14:48:06,731 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 14:48:06,771 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 14:48:06,775 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 14:48:06,776 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 14:48:06,791 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 14:48:06,791 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 14:48:06,792 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 14:48:06,792 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 14:48:06,792 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 14:48:06,792 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 14:48:06,792 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 14:48:06,792 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 14:48:06,792 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 14:48:06,792 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 14:48:06,792 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 14:48:06,792 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 14:48:06,792 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 14:48:06,792 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 14:48:06,792 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 14:48:06,793 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 14:48:06,793 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 14:48:06,793 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 14:48:06,793 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 14:48:06,793 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 14:48:06,793 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 14:48:06,793 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 14:48:06,793 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 14:48:06,793 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 14:48:06,793 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 14:48:06,793 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 14:48:06,793 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 14:48:06,793 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:48:06,793 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 14:48:06,794 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 14:48:06,794 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 14:48:06,794 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 14:48:06,794 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 14:48:06,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 14:48:06,794 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 14:48:06,794 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 14:48:06,794 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 14:48:06,795 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 14:48:06,795 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 -> 62204da2eab9fabc07e0a3780bac6c183714a9a5b9e2b6bd6a8ef0836349aca5 [2025-03-03 14:48:07,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 14:48:07,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 14:48:07,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 14:48:07,041 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 14:48:07,042 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 14:48:07,043 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.ufo.UNBOUNDED.pals.c [2025-03-03 14:48:08,216 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75168e8b4/e0b929ca8e7f46daa31079551a0416ff/FLAGeae9a290f [2025-03-03 14:48:08,487 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 14:48:08,487 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.ufo.UNBOUNDED.pals.c [2025-03-03 14:48:08,500 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75168e8b4/e0b929ca8e7f46daa31079551a0416ff/FLAGeae9a290f [2025-03-03 14:48:08,783 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75168e8b4/e0b929ca8e7f46daa31079551a0416ff [2025-03-03 14:48:08,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 14:48:08,786 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 14:48:08,787 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 14:48:08,787 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 14:48:08,790 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 14:48:08,790 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:48:08" (1/1) ... [2025-03-03 14:48:08,791 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@352846ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:48:08, skipping insertion in model container [2025-03-03 14:48:08,791 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:48:08" (1/1) ... [2025-03-03 14:48:08,820 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 14:48:09,058 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/seq-mthreaded/pals_floodmax.4.ufo.UNBOUNDED.pals.c[28366,28379] [2025-03-03 14:48:09,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:48:09,081 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 14:48:09,163 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/seq-mthreaded/pals_floodmax.4.ufo.UNBOUNDED.pals.c[28366,28379] [2025-03-03 14:48:09,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:48:09,180 INFO L204 MainTranslator]: Completed translation [2025-03-03 14:48:09,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:48:09 WrapperNode [2025-03-03 14:48:09,182 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 14:48:09,183 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 14:48:09,183 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 14:48:09,183 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 14:48:09,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:48:09" (1/1) ... [2025-03-03 14:48:09,200 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:48:09" (1/1) ... [2025-03-03 14:48:09,243 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 956 [2025-03-03 14:48:09,244 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 14:48:09,244 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 14:48:09,244 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 14:48:09,244 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 14:48:09,253 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:48:09" (1/1) ... [2025-03-03 14:48:09,253 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:48:09" (1/1) ... [2025-03-03 14:48:09,260 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:48:09" (1/1) ... [2025-03-03 14:48:09,279 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]. [2025-03-03 14:48:09,280 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:48:09" (1/1) ... [2025-03-03 14:48:09,280 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:48:09" (1/1) ... [2025-03-03 14:48:09,289 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:48:09" (1/1) ... [2025-03-03 14:48:09,296 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:48:09" (1/1) ... [2025-03-03 14:48:09,297 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:48:09" (1/1) ... [2025-03-03 14:48:09,301 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:48:09" (1/1) ... [2025-03-03 14:48:09,304 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 14:48:09,308 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 14:48:09,308 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 14:48:09,308 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 14:48:09,309 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:48:09" (1/1) ... [2025-03-03 14:48:09,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:48:09,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:48:09,345 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) [2025-03-03 14:48:09,348 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 [2025-03-03 14:48:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 14:48:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 14:48:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 14:48:09,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 14:48:09,453 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 14:48:09,455 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 14:48:10,285 INFO L? ?]: Removed 111 outVars from TransFormulas that were not future-live. [2025-03-03 14:48:10,285 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 14:48:10,299 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 14:48:10,300 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 14:48:10,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:48:10 BoogieIcfgContainer [2025-03-03 14:48:10,300 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 14:48:10,301 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 14:48:10,302 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 14:48:10,307 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 14:48:10,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 02:48:08" (1/3) ... [2025-03-03 14:48:10,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7189c923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:48:10, skipping insertion in model container [2025-03-03 14:48:10,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:48:09" (2/3) ... [2025-03-03 14:48:10,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7189c923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:48:10, skipping insertion in model container [2025-03-03 14:48:10,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:48:10" (3/3) ... [2025-03-03 14:48:10,309 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.UNBOUNDED.pals.c [2025-03-03 14:48:10,319 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 14:48:10,322 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_floodmax.4.ufo.UNBOUNDED.pals.c that has 1 procedures, 287 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 14:48:10,374 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 14:48:10,383 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;@5fc9f961, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 14:48:10,383 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 14:48:10,387 INFO L276 IsEmpty]: Start isEmpty. Operand has 287 states, 285 states have (on average 1.8245614035087718) internal successors, (520), 286 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:10,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-03 14:48:10,397 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:48:10,398 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] [2025-03-03 14:48:10,398 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:48:10,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:48:10,402 INFO L85 PathProgramCache]: Analyzing trace with hash -317198031, now seen corresponding path program 1 times [2025-03-03 14:48:10,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:48:10,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412558349] [2025-03-03 14:48:10,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:48:10,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:48:10,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-03 14:48:10,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-03 14:48:10,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:48:10,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:48:10,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:48:10,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:48:10,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412558349] [2025-03-03 14:48:10,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412558349] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:48:10,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:48:10,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 14:48:10,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145256891] [2025-03-03 14:48:10,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:48:10,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 14:48:10,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:48:10,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 14:48:10,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 14:48:10,815 INFO L87 Difference]: Start difference. First operand has 287 states, 285 states have (on average 1.8245614035087718) internal successors, (520), 286 states have internal predecessors, (520), 0 states have call successors, (0), 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 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:10,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:48:10,842 INFO L93 Difference]: Finished difference Result 380 states and 684 transitions. [2025-03-03 14:48:10,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 14:48:10,844 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2025-03-03 14:48:10,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:48:10,853 INFO L225 Difference]: With dead ends: 380 [2025-03-03 14:48:10,853 INFO L226 Difference]: Without dead ends: 284 [2025-03-03 14:48:10,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 14:48:10,857 INFO L435 NwaCegarLoop]: 515 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:48:10,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:48:10,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2025-03-03 14:48:10,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2025-03-03 14:48:10,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.8197879858657244) internal successors, (515), 283 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:10,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 515 transitions. [2025-03-03 14:48:10,902 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 515 transitions. Word has length 77 [2025-03-03 14:48:10,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:48:10,903 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 515 transitions. [2025-03-03 14:48:10,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:10,905 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 515 transitions. [2025-03-03 14:48:10,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-03 14:48:10,909 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:48:10,909 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] [2025-03-03 14:48:10,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 14:48:10,911 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:48:10,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:48:10,911 INFO L85 PathProgramCache]: Analyzing trace with hash -384204784, now seen corresponding path program 1 times [2025-03-03 14:48:10,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:48:10,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956589251] [2025-03-03 14:48:10,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:48:10,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:48:10,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-03 14:48:11,018 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-03 14:48:11,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:48:11,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:48:11,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:48:11,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:48:11,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956589251] [2025-03-03 14:48:11,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956589251] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:48:11,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:48:11,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 14:48:11,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541457484] [2025-03-03 14:48:11,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:48:11,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:48:11,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:48:11,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:48:11,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:48:11,291 INFO L87 Difference]: Start difference. First operand 284 states and 515 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:11,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:48:11,420 INFO L93 Difference]: Finished difference Result 380 states and 680 transitions. [2025-03-03 14:48:11,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:48:11,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2025-03-03 14:48:11,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:48:11,423 INFO L225 Difference]: With dead ends: 380 [2025-03-03 14:48:11,425 INFO L226 Difference]: Without dead ends: 284 [2025-03-03 14:48:11,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:48:11,427 INFO L435 NwaCegarLoop]: 513 mSDtfsCounter, 0 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:48:11,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2005 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:48:11,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2025-03-03 14:48:11,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2025-03-03 14:48:11,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.6713780918727916) internal successors, (473), 283 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:11,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 473 transitions. [2025-03-03 14:48:11,442 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 473 transitions. Word has length 77 [2025-03-03 14:48:11,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:48:11,443 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 473 transitions. [2025-03-03 14:48:11,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:11,443 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 473 transitions. [2025-03-03 14:48:11,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-03-03 14:48:11,447 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:48:11,447 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] [2025-03-03 14:48:11,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 14:48:11,448 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:48:11,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:48:11,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1125202192, now seen corresponding path program 1 times [2025-03-03 14:48:11,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:48:11,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781964426] [2025-03-03 14:48:11,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:48:11,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:48:11,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-03 14:48:11,530 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-03 14:48:11,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:48:11,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:48:11,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:48:11,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:48:11,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781964426] [2025-03-03 14:48:11,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781964426] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:48:11,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:48:11,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 14:48:11,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452951818] [2025-03-03 14:48:11,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:48:11,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:48:11,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:48:11,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:48:11,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 14:48:11,686 INFO L87 Difference]: Start difference. First operand 284 states and 473 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:11,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:48:11,739 INFO L93 Difference]: Finished difference Result 457 states and 774 transitions. [2025-03-03 14:48:11,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:48:11,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2025-03-03 14:48:11,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:48:11,742 INFO L225 Difference]: With dead ends: 457 [2025-03-03 14:48:11,742 INFO L226 Difference]: Without dead ends: 365 [2025-03-03 14:48:11,742 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 [2025-03-03 14:48:11,743 INFO L435 NwaCegarLoop]: 467 mSDtfsCounter, 131 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:48:11,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 887 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:48:11,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2025-03-03 14:48:11,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 362. [2025-03-03 14:48:11,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 1.6759002770083102) internal successors, (605), 361 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:11,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 605 transitions. [2025-03-03 14:48:11,754 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 605 transitions. Word has length 118 [2025-03-03 14:48:11,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:48:11,754 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 605 transitions. [2025-03-03 14:48:11,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:11,755 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 605 transitions. [2025-03-03 14:48:11,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-03-03 14:48:11,761 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:48:11,761 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] [2025-03-03 14:48:11,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 14:48:11,761 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:48:11,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:48:11,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1145287309, now seen corresponding path program 1 times [2025-03-03 14:48:11,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:48:11,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100910748] [2025-03-03 14:48:11,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:48:11,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:48:11,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-03 14:48:11,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-03 14:48:11,820 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:48:11,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:48:11,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:48:11,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:48:11,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100910748] [2025-03-03 14:48:11,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100910748] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:48:11,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:48:11,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 14:48:11,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113148977] [2025-03-03 14:48:11,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:48:11,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:48:11,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:48:11,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:48:11,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 14:48:11,939 INFO L87 Difference]: Start difference. First operand 362 states and 605 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:11,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:48:11,986 INFO L93 Difference]: Finished difference Result 684 states and 1157 transitions. [2025-03-03 14:48:11,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:48:11,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2025-03-03 14:48:11,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:48:11,988 INFO L225 Difference]: With dead ends: 684 [2025-03-03 14:48:11,989 INFO L226 Difference]: Without dead ends: 514 [2025-03-03 14:48:11,990 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 [2025-03-03 14:48:11,990 INFO L435 NwaCegarLoop]: 470 mSDtfsCounter, 132 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:48:11,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 899 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:48:11,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2025-03-03 14:48:12,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 510. [2025-03-03 14:48:12,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 1.6836935166994107) internal successors, (857), 509 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:12,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 857 transitions. [2025-03-03 14:48:12,006 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 857 transitions. Word has length 121 [2025-03-03 14:48:12,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:48:12,007 INFO L471 AbstractCegarLoop]: Abstraction has 510 states and 857 transitions. [2025-03-03 14:48:12,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:12,007 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 857 transitions. [2025-03-03 14:48:12,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-03-03 14:48:12,009 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:48:12,009 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] [2025-03-03 14:48:12,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 14:48:12,010 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:48:12,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:48:12,011 INFO L85 PathProgramCache]: Analyzing trace with hash -794310143, now seen corresponding path program 1 times [2025-03-03 14:48:12,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:48:12,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77689491] [2025-03-03 14:48:12,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:48:12,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:48:12,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-03-03 14:48:12,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-03-03 14:48:12,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:48:12,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:48:12,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:48:12,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:48:12,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77689491] [2025-03-03 14:48:12,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77689491] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:48:12,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:48:12,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 14:48:12,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279837980] [2025-03-03 14:48:12,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:48:12,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:48:12,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:48:12,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:48:12,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 14:48:12,203 INFO L87 Difference]: Start difference. First operand 510 states and 857 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:12,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:48:12,236 INFO L93 Difference]: Finished difference Result 1110 states and 1879 transitions. [2025-03-03 14:48:12,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:48:12,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2025-03-03 14:48:12,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:48:12,239 INFO L225 Difference]: With dead ends: 1110 [2025-03-03 14:48:12,239 INFO L226 Difference]: Without dead ends: 792 [2025-03-03 14:48:12,240 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 [2025-03-03 14:48:12,241 INFO L435 NwaCegarLoop]: 470 mSDtfsCounter, 125 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:48:12,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 900 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:48:12,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2025-03-03 14:48:12,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 786. [2025-03-03 14:48:12,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 785 states have (on average 1.6828025477707007) internal successors, (1321), 785 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:12,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1321 transitions. [2025-03-03 14:48:12,257 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1321 transitions. Word has length 124 [2025-03-03 14:48:12,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:48:12,257 INFO L471 AbstractCegarLoop]: Abstraction has 786 states and 1321 transitions. [2025-03-03 14:48:12,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:12,258 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1321 transitions. [2025-03-03 14:48:12,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-03 14:48:12,259 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:48:12,259 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] [2025-03-03 14:48:12,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 14:48:12,259 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:48:12,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:48:12,260 INFO L85 PathProgramCache]: Analyzing trace with hash 235819710, now seen corresponding path program 1 times [2025-03-03 14:48:12,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:48:12,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316062840] [2025-03-03 14:48:12,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:48:12,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:48:12,282 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-03 14:48:12,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-03 14:48:12,313 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:48:12,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:48:12,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:48:12,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:48:12,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316062840] [2025-03-03 14:48:12,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316062840] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:48:12,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:48:12,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 14:48:12,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574293819] [2025-03-03 14:48:12,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:48:12,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:48:12,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:48:12,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:48:12,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 14:48:12,454 INFO L87 Difference]: Start difference. First operand 786 states and 1321 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:12,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:48:12,492 INFO L93 Difference]: Finished difference Result 1902 states and 3203 transitions. [2025-03-03 14:48:12,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:48:12,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2025-03-03 14:48:12,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:48:12,498 INFO L225 Difference]: With dead ends: 1902 [2025-03-03 14:48:12,498 INFO L226 Difference]: Without dead ends: 1308 [2025-03-03 14:48:12,499 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 [2025-03-03 14:48:12,500 INFO L435 NwaCegarLoop]: 470 mSDtfsCounter, 118 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:48:12,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 901 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:48:12,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2025-03-03 14:48:12,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1298. [2025-03-03 14:48:12,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1297 states have (on average 1.6723207401696223) internal successors, (2169), 1297 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:12,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 2169 transitions. [2025-03-03 14:48:12,535 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 2169 transitions. Word has length 127 [2025-03-03 14:48:12,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:48:12,535 INFO L471 AbstractCegarLoop]: Abstraction has 1298 states and 2169 transitions. [2025-03-03 14:48:12,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:12,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 2169 transitions. [2025-03-03 14:48:12,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-03-03 14:48:12,538 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:48:12,538 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] [2025-03-03 14:48:12,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 14:48:12,539 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:48:12,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:48:12,539 INFO L85 PathProgramCache]: Analyzing trace with hash -469031183, now seen corresponding path program 1 times [2025-03-03 14:48:12,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:48:12,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63430733] [2025-03-03 14:48:12,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:48:12,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:48:12,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-03-03 14:48:12,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-03-03 14:48:12,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:48:12,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:48:12,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:48:12,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:48:12,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63430733] [2025-03-03 14:48:12,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63430733] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:48:12,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:48:12,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:48:12,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385076586] [2025-03-03 14:48:12,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:48:12,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:48:12,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:48:12,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:48:12,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:48:12,797 INFO L87 Difference]: Start difference. First operand 1298 states and 2169 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:13,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:48:13,103 INFO L93 Difference]: Finished difference Result 6530 states and 11093 transitions. [2025-03-03 14:48:13,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 14:48:13,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2025-03-03 14:48:13,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:48:13,125 INFO L225 Difference]: With dead ends: 6530 [2025-03-03 14:48:13,126 INFO L226 Difference]: Without dead ends: 5424 [2025-03-03 14:48:13,129 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:48:13,130 INFO L435 NwaCegarLoop]: 475 mSDtfsCounter, 1246 mSDsluCounter, 3436 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 3911 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 14:48:13,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1246 Valid, 3911 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 14:48:13,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5424 states. [2025-03-03 14:48:13,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5424 to 2326. [2025-03-03 14:48:13,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2326 states, 2325 states have (on average 1.6748387096774193) internal successors, (3894), 2325 states have internal predecessors, (3894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:13,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2326 states to 2326 states and 3894 transitions. [2025-03-03 14:48:13,206 INFO L78 Accepts]: Start accepts. Automaton has 2326 states and 3894 transitions. Word has length 130 [2025-03-03 14:48:13,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:48:13,206 INFO L471 AbstractCegarLoop]: Abstraction has 2326 states and 3894 transitions. [2025-03-03 14:48:13,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:13,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2326 states and 3894 transitions. [2025-03-03 14:48:13,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-03 14:48:13,208 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:48:13,208 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] [2025-03-03 14:48:13,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 14:48:13,209 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:48:13,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:48:13,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1602362548, now seen corresponding path program 1 times [2025-03-03 14:48:13,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:48:13,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839912579] [2025-03-03 14:48:13,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:48:13,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:48:13,225 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-03 14:48:13,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-03 14:48:13,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:48:13,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:48:13,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:48:13,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:48:13,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839912579] [2025-03-03 14:48:13,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839912579] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:48:13,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:48:13,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:48:13,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565180628] [2025-03-03 14:48:13,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:48:13,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:48:13,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:48:13,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:48:13,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:48:13,351 INFO L87 Difference]: Start difference. First operand 2326 states and 3894 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:13,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:48:13,466 INFO L93 Difference]: Finished difference Result 6744 states and 11406 transitions. [2025-03-03 14:48:13,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:48:13,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2025-03-03 14:48:13,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:48:13,482 INFO L225 Difference]: With dead ends: 6744 [2025-03-03 14:48:13,482 INFO L226 Difference]: Without dead ends: 4610 [2025-03-03 14:48:13,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:48:13,488 INFO L435 NwaCegarLoop]: 474 mSDtfsCounter, 457 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:48:13,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 1511 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:48:13,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4610 states. [2025-03-03 14:48:13,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4610 to 3451. [2025-03-03 14:48:13,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3451 states, 3450 states have (on average 1.6805797101449276) internal successors, (5798), 3450 states have internal predecessors, (5798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:13,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3451 states to 3451 states and 5798 transitions. [2025-03-03 14:48:13,582 INFO L78 Accepts]: Start accepts. Automaton has 3451 states and 5798 transitions. Word has length 131 [2025-03-03 14:48:13,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:48:13,583 INFO L471 AbstractCegarLoop]: Abstraction has 3451 states and 5798 transitions. [2025-03-03 14:48:13,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:13,583 INFO L276 IsEmpty]: Start isEmpty. Operand 3451 states and 5798 transitions. [2025-03-03 14:48:13,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-03 14:48:13,587 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:48:13,588 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] [2025-03-03 14:48:13,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 14:48:13,589 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:48:13,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:48:13,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1917223759, now seen corresponding path program 1 times [2025-03-03 14:48:13,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:48:13,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984554748] [2025-03-03 14:48:13,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:48:13,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:48:13,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-03 14:48:13,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-03 14:48:13,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:48:13,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:48:13,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:48:13,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:48:13,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984554748] [2025-03-03 14:48:13,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984554748] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:48:13,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:48:13,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:48:13,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873839399] [2025-03-03 14:48:13,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:48:13,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:48:13,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:48:13,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:48:13,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:48:13,770 INFO L87 Difference]: Start difference. First operand 3451 states and 5798 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:13,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:48:13,899 INFO L93 Difference]: Finished difference Result 10068 states and 17008 transitions. [2025-03-03 14:48:13,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:48:13,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2025-03-03 14:48:13,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:48:13,920 INFO L225 Difference]: With dead ends: 10068 [2025-03-03 14:48:13,920 INFO L226 Difference]: Without dead ends: 6809 [2025-03-03 14:48:13,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:48:13,927 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 457 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:48:13,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 1501 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:48:13,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6809 states. [2025-03-03 14:48:14,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6809 to 5106. [2025-03-03 14:48:14,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5106 states, 5105 states have (on average 1.6789422135161607) internal successors, (8571), 5105 states have internal predecessors, (8571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:14,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5106 states to 5106 states and 8571 transitions. [2025-03-03 14:48:14,059 INFO L78 Accepts]: Start accepts. Automaton has 5106 states and 8571 transitions. Word has length 132 [2025-03-03 14:48:14,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:48:14,060 INFO L471 AbstractCegarLoop]: Abstraction has 5106 states and 8571 transitions. [2025-03-03 14:48:14,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:14,060 INFO L276 IsEmpty]: Start isEmpty. Operand 5106 states and 8571 transitions. [2025-03-03 14:48:14,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-03-03 14:48:14,063 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:48:14,063 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] [2025-03-03 14:48:14,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 14:48:14,064 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:48:14,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:48:14,065 INFO L85 PathProgramCache]: Analyzing trace with hash -658378125, now seen corresponding path program 1 times [2025-03-03 14:48:14,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:48:14,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435779506] [2025-03-03 14:48:14,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:48:14,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:48:14,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-03 14:48:14,104 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-03 14:48:14,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:48:14,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:48:14,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:48:14,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:48:14,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435779506] [2025-03-03 14:48:14,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435779506] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:48:14,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:48:14,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 14:48:14,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775274775] [2025-03-03 14:48:14,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:48:14,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:48:14,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:48:14,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:48:14,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 14:48:14,166 INFO L87 Difference]: Start difference. First operand 5106 states and 8571 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:14,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:48:14,311 INFO L93 Difference]: Finished difference Result 11425 states and 19299 transitions. [2025-03-03 14:48:14,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:48:14,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2025-03-03 14:48:14,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:48:14,345 INFO L225 Difference]: With dead ends: 11425 [2025-03-03 14:48:14,345 INFO L226 Difference]: Without dead ends: 7909 [2025-03-03 14:48:14,349 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 [2025-03-03 14:48:14,350 INFO L435 NwaCegarLoop]: 592 mSDtfsCounter, 138 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:48:14,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1043 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:48:14,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7909 states. [2025-03-03 14:48:14,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7909 to 7907. [2025-03-03 14:48:14,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7907 states, 7906 states have (on average 1.6750569187958513) internal successors, (13243), 7906 states have internal predecessors, (13243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:14,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7907 states to 7907 states and 13243 transitions. [2025-03-03 14:48:14,530 INFO L78 Accepts]: Start accepts. Automaton has 7907 states and 13243 transitions. Word has length 133 [2025-03-03 14:48:14,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:48:14,530 INFO L471 AbstractCegarLoop]: Abstraction has 7907 states and 13243 transitions. [2025-03-03 14:48:14,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:14,530 INFO L276 IsEmpty]: Start isEmpty. Operand 7907 states and 13243 transitions. [2025-03-03 14:48:14,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-03-03 14:48:14,535 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:48:14,535 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] [2025-03-03 14:48:14,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-03 14:48:14,536 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:48:14,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:48:14,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1553750472, now seen corresponding path program 1 times [2025-03-03 14:48:14,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:48:14,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992556577] [2025-03-03 14:48:14,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:48:14,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:48:14,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-03 14:48:14,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-03 14:48:14,569 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:48:14,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:48:14,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:48:14,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:48:14,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992556577] [2025-03-03 14:48:14,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992556577] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:48:14,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:48:14,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 14:48:14,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807935280] [2025-03-03 14:48:14,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:48:14,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:48:14,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:48:14,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:48:14,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 14:48:14,630 INFO L87 Difference]: Start difference. First operand 7907 states and 13243 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:14,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:48:14,762 INFO L93 Difference]: Finished difference Result 17592 states and 29492 transitions. [2025-03-03 14:48:14,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:48:14,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2025-03-03 14:48:14,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:48:14,788 INFO L225 Difference]: With dead ends: 17592 [2025-03-03 14:48:14,789 INFO L226 Difference]: Without dead ends: 12155 [2025-03-03 14:48:14,800 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 [2025-03-03 14:48:14,801 INFO L435 NwaCegarLoop]: 590 mSDtfsCounter, 131 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:48:14,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 1042 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:48:14,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12155 states. [2025-03-03 14:48:15,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12155 to 12153. [2025-03-03 14:48:15,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12153 states, 12152 states have (on average 1.663429888084266) internal successors, (20214), 12152 states have internal predecessors, (20214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:15,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12153 states to 12153 states and 20214 transitions. [2025-03-03 14:48:15,143 INFO L78 Accepts]: Start accepts. Automaton has 12153 states and 20214 transitions. Word has length 133 [2025-03-03 14:48:15,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:48:15,144 INFO L471 AbstractCegarLoop]: Abstraction has 12153 states and 20214 transitions. [2025-03-03 14:48:15,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:15,144 INFO L276 IsEmpty]: Start isEmpty. Operand 12153 states and 20214 transitions. [2025-03-03 14:48:15,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-03-03 14:48:15,145 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:48:15,145 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] [2025-03-03 14:48:15,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-03 14:48:15,145 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:48:15,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:48:15,146 INFO L85 PathProgramCache]: Analyzing trace with hash -928221677, now seen corresponding path program 1 times [2025-03-03 14:48:15,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:48:15,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434931127] [2025-03-03 14:48:15,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:48:15,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:48:15,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-03 14:48:15,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-03 14:48:15,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:48:15,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:48:15,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:48:15,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:48:15,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434931127] [2025-03-03 14:48:15,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434931127] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:48:15,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:48:15,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 14:48:15,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731981572] [2025-03-03 14:48:15,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:48:15,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:48:15,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:48:15,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:48:15,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 14:48:15,266 INFO L87 Difference]: Start difference. First operand 12153 states and 20214 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:15,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:48:15,434 INFO L93 Difference]: Finished difference Result 23965 states and 39928 transitions. [2025-03-03 14:48:15,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:48:15,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2025-03-03 14:48:15,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:48:15,466 INFO L225 Difference]: With dead ends: 23965 [2025-03-03 14:48:15,466 INFO L226 Difference]: Without dead ends: 17262 [2025-03-03 14:48:15,479 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 [2025-03-03 14:48:15,479 INFO L435 NwaCegarLoop]: 581 mSDtfsCounter, 124 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:48:15,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1034 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:48:15,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17262 states. [2025-03-03 14:48:15,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17262 to 17260. [2025-03-03 14:48:15,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17260 states, 17259 states have (on average 1.652702937597775) internal successors, (28524), 17259 states have internal predecessors, (28524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:15,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17260 states to 17260 states and 28524 transitions. [2025-03-03 14:48:15,877 INFO L78 Accepts]: Start accepts. Automaton has 17260 states and 28524 transitions. Word has length 133 [2025-03-03 14:48:15,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:48:15,877 INFO L471 AbstractCegarLoop]: Abstraction has 17260 states and 28524 transitions. [2025-03-03 14:48:15,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:15,878 INFO L276 IsEmpty]: Start isEmpty. Operand 17260 states and 28524 transitions. [2025-03-03 14:48:15,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-03-03 14:48:15,879 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:48:15,879 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] [2025-03-03 14:48:15,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-03 14:48:15,879 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:48:15,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:48:15,880 INFO L85 PathProgramCache]: Analyzing trace with hash 412010937, now seen corresponding path program 1 times [2025-03-03 14:48:15,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:48:15,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473510984] [2025-03-03 14:48:15,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:48:15,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:48:15,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-03 14:48:15,916 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-03 14:48:15,917 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:48:15,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:48:15,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:48:15,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:48:15,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473510984] [2025-03-03 14:48:15,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473510984] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:48:15,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:48:15,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 14:48:15,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816432765] [2025-03-03 14:48:15,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:48:15,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:48:15,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:48:15,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:48:15,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 14:48:15,995 INFO L87 Difference]: Start difference. First operand 17260 states and 28524 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:16,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:48:16,294 INFO L93 Difference]: Finished difference Result 33872 states and 56088 transitions. [2025-03-03 14:48:16,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:48:16,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2025-03-03 14:48:16,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:48:16,341 INFO L225 Difference]: With dead ends: 33872 [2025-03-03 14:48:16,341 INFO L226 Difference]: Without dead ends: 24369 [2025-03-03 14:48:16,354 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 [2025-03-03 14:48:16,354 INFO L435 NwaCegarLoop]: 571 mSDtfsCounter, 117 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:48:16,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 1025 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:48:16,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24369 states. [2025-03-03 14:48:16,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24369 to 24367. [2025-03-03 14:48:16,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24367 states, 24366 states have (on average 1.6409751292785029) internal successors, (39984), 24366 states have internal predecessors, (39984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:16,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24367 states to 24367 states and 39984 transitions. [2025-03-03 14:48:16,883 INFO L78 Accepts]: Start accepts. Automaton has 24367 states and 39984 transitions. Word has length 133 [2025-03-03 14:48:16,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:48:16,883 INFO L471 AbstractCegarLoop]: Abstraction has 24367 states and 39984 transitions. [2025-03-03 14:48:16,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:16,884 INFO L276 IsEmpty]: Start isEmpty. Operand 24367 states and 39984 transitions. [2025-03-03 14:48:16,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-03-03 14:48:16,884 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:48:16,884 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] [2025-03-03 14:48:16,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-03 14:48:16,885 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:48:16,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:48:16,885 INFO L85 PathProgramCache]: Analyzing trace with hash -646597462, now seen corresponding path program 1 times [2025-03-03 14:48:16,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:48:16,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065005401] [2025-03-03 14:48:16,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:48:16,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:48:16,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-03 14:48:16,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-03 14:48:16,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:48:16,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:48:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:48:17,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:48:17,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065005401] [2025-03-03 14:48:17,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065005401] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:48:17,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:48:17,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:48:17,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012446305] [2025-03-03 14:48:17,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:48:17,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:48:17,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:48:17,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:48:17,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:48:17,018 INFO L87 Difference]: Start difference. First operand 24367 states and 39984 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:17,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:48:17,669 INFO L93 Difference]: Finished difference Result 79851 states and 131402 transitions. [2025-03-03 14:48:17,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:48:17,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2025-03-03 14:48:17,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:48:17,801 INFO L225 Difference]: With dead ends: 79851 [2025-03-03 14:48:17,801 INFO L226 Difference]: Without dead ends: 55699 [2025-03-03 14:48:17,834 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:48:17,835 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 455 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:48:17,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1503 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:48:17,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55699 states. [2025-03-03 14:48:18,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55699 to 39890. [2025-03-03 14:48:18,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39890 states, 39889 states have (on average 1.633708541201835) internal successors, (65167), 39889 states have internal predecessors, (65167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:18,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39890 states to 39890 states and 65167 transitions. [2025-03-03 14:48:18,836 INFO L78 Accepts]: Start accepts. Automaton has 39890 states and 65167 transitions. Word has length 133 [2025-03-03 14:48:18,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:48:18,837 INFO L471 AbstractCegarLoop]: Abstraction has 39890 states and 65167 transitions. [2025-03-03 14:48:18,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:18,837 INFO L276 IsEmpty]: Start isEmpty. Operand 39890 states and 65167 transitions. [2025-03-03 14:48:18,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-03-03 14:48:18,838 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:48:18,838 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] [2025-03-03 14:48:18,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-03 14:48:18,838 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:48:18,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:48:18,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1477476269, now seen corresponding path program 1 times [2025-03-03 14:48:18,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:48:18,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783053523] [2025-03-03 14:48:18,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:48:18,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:48:18,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-03 14:48:18,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-03 14:48:18,869 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:48:18,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:48:18,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:48:18,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:48:18,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783053523] [2025-03-03 14:48:18,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783053523] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:48:18,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:48:18,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:48:18,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988521567] [2025-03-03 14:48:18,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:48:18,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:48:18,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:48:18,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:48:18,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:48:18,970 INFO L87 Difference]: Start difference. First operand 39890 states and 65167 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:19,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:48:19,945 INFO L93 Difference]: Finished difference Result 129245 states and 211740 transitions. [2025-03-03 14:48:19,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:48:19,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2025-03-03 14:48:19,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:48:20,176 INFO L225 Difference]: With dead ends: 129245 [2025-03-03 14:48:20,176 INFO L226 Difference]: Without dead ends: 89570 [2025-03-03 14:48:20,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:48:20,212 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 453 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:48:20,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1505 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:48:20,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89570 states. [2025-03-03 14:48:21,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89570 to 64505. [2025-03-03 14:48:21,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64505 states, 64504 states have (on average 1.626658811856629) internal successors, (104926), 64504 states have internal predecessors, (104926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:21,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64505 states to 64505 states and 104926 transitions. [2025-03-03 14:48:21,574 INFO L78 Accepts]: Start accepts. Automaton has 64505 states and 104926 transitions. Word has length 134 [2025-03-03 14:48:21,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:48:21,575 INFO L471 AbstractCegarLoop]: Abstraction has 64505 states and 104926 transitions. [2025-03-03 14:48:21,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:21,575 INFO L276 IsEmpty]: Start isEmpty. Operand 64505 states and 104926 transitions. [2025-03-03 14:48:21,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-03-03 14:48:21,576 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:48:21,576 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] [2025-03-03 14:48:21,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-03 14:48:21,576 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:48:21,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:48:21,577 INFO L85 PathProgramCache]: Analyzing trace with hash -331277301, now seen corresponding path program 1 times [2025-03-03 14:48:21,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:48:21,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496304161] [2025-03-03 14:48:21,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:48:21,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:48:21,593 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-03 14:48:21,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-03 14:48:21,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:48:21,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:48:22,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:48:22,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:48:22,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496304161] [2025-03-03 14:48:22,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496304161] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:48:22,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:48:22,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:48:22,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713385076] [2025-03-03 14:48:22,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:48:22,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:48:22,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:48:22,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:48:22,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:48:22,118 INFO L87 Difference]: Start difference. First operand 64505 states and 104926 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:22,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:48:22,957 INFO L93 Difference]: Finished difference Result 128797 states and 209509 transitions. [2025-03-03 14:48:22,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:48:22,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2025-03-03 14:48:22,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:48:23,166 INFO L225 Difference]: With dead ends: 128797 [2025-03-03 14:48:23,167 INFO L226 Difference]: Without dead ends: 64507 [2025-03-03 14:48:23,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:48:23,232 INFO L435 NwaCegarLoop]: 471 mSDtfsCounter, 241 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:48:23,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1782 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:48:23,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64507 states. [2025-03-03 14:48:24,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64507 to 64505. [2025-03-03 14:48:24,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64505 states, 64504 states have (on average 1.6169694902641696) internal successors, (104301), 64504 states have internal predecessors, (104301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:24,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64505 states to 64505 states and 104301 transitions. [2025-03-03 14:48:24,279 INFO L78 Accepts]: Start accepts. Automaton has 64505 states and 104301 transitions. Word has length 136 [2025-03-03 14:48:24,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:48:24,279 INFO L471 AbstractCegarLoop]: Abstraction has 64505 states and 104301 transitions. [2025-03-03 14:48:24,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:24,279 INFO L276 IsEmpty]: Start isEmpty. Operand 64505 states and 104301 transitions. [2025-03-03 14:48:24,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-03-03 14:48:24,280 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:48:24,280 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] [2025-03-03 14:48:24,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-03 14:48:24,281 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:48:24,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:48:24,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1875817149, now seen corresponding path program 1 times [2025-03-03 14:48:24,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:48:24,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905305533] [2025-03-03 14:48:24,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:48:24,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:48:24,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-03 14:48:24,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-03 14:48:24,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:48:24,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:48:24,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:48:24,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:48:24,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905305533] [2025-03-03 14:48:24,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905305533] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:48:24,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:48:24,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:48:24,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142454528] [2025-03-03 14:48:24,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:48:24,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:48:24,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:48:24,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:48:24,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:48:24,729 INFO L87 Difference]: Start difference. First operand 64505 states and 104301 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:25,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:48:25,879 INFO L93 Difference]: Finished difference Result 188667 states and 305529 transitions. [2025-03-03 14:48:25,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:48:25,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2025-03-03 14:48:25,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:48:26,101 INFO L225 Difference]: With dead ends: 188667 [2025-03-03 14:48:26,101 INFO L226 Difference]: Without dead ends: 124377 [2025-03-03 14:48:26,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:48:26,170 INFO L435 NwaCegarLoop]: 460 mSDtfsCounter, 354 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:48:26,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 1789 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:48:26,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124377 states. [2025-03-03 14:48:27,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124377 to 124375. [2025-03-03 14:48:27,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124375 states, 124374 states have (on average 1.6044671715953496) internal successors, (199554), 124374 states have internal predecessors, (199554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:28,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124375 states to 124375 states and 199554 transitions. [2025-03-03 14:48:28,505 INFO L78 Accepts]: Start accepts. Automaton has 124375 states and 199554 transitions. Word has length 139 [2025-03-03 14:48:28,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:48:28,506 INFO L471 AbstractCegarLoop]: Abstraction has 124375 states and 199554 transitions. [2025-03-03 14:48:28,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:28,506 INFO L276 IsEmpty]: Start isEmpty. Operand 124375 states and 199554 transitions. [2025-03-03 14:48:28,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-03 14:48:28,508 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:48:28,508 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] [2025-03-03 14:48:28,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-03 14:48:28,508 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:48:28,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:48:28,509 INFO L85 PathProgramCache]: Analyzing trace with hash 2011595300, now seen corresponding path program 1 times [2025-03-03 14:48:28,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:48:28,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604659621] [2025-03-03 14:48:28,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:48:28,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:48:28,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-03 14:48:28,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-03 14:48:28,604 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:48:28,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:48:29,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:48:29,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:48:29,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604659621] [2025-03-03 14:48:29,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604659621] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:48:29,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:48:29,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-03 14:48:29,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102471581] [2025-03-03 14:48:29,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:48:29,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:48:29,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:48:29,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:48:29,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:48:29,128 INFO L87 Difference]: Start difference. First operand 124375 states and 199554 transitions. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:29,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:48:29,969 INFO L93 Difference]: Finished difference Result 130185 states and 207299 transitions. [2025-03-03 14:48:29,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:48:29,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2025-03-03 14:48:29,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:48:30,190 INFO L225 Difference]: With dead ends: 130185 [2025-03-03 14:48:30,191 INFO L226 Difference]: Without dead ends: 130183 [2025-03-03 14:48:30,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:48:30,234 INFO L435 NwaCegarLoop]: 467 mSDtfsCounter, 0 mSDsluCounter, 2783 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3250 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:48:30,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3250 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:48:30,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130183 states. [2025-03-03 14:48:32,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130183 to 130183. [2025-03-03 14:48:32,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130183 states, 130182 states have (on average 1.5772917914919113) internal successors, (205335), 130182 states have internal predecessors, (205335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:32,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130183 states to 130183 states and 205335 transitions. [2025-03-03 14:48:32,721 INFO L78 Accepts]: Start accepts. Automaton has 130183 states and 205335 transitions. Word has length 140 [2025-03-03 14:48:32,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:48:32,722 INFO L471 AbstractCegarLoop]: Abstraction has 130183 states and 205335 transitions. [2025-03-03 14:48:32,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:32,722 INFO L276 IsEmpty]: Start isEmpty. Operand 130183 states and 205335 transitions. [2025-03-03 14:48:32,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-03 14:48:32,725 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:48:32,726 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:48:32,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-03 14:48:32,726 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:48:32,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:48:32,726 INFO L85 PathProgramCache]: Analyzing trace with hash 316305547, now seen corresponding path program 1 times [2025-03-03 14:48:32,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:48:32,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746945727] [2025-03-03 14:48:32,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:48:32,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:48:32,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-03 14:48:32,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-03 14:48:32,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:48:32,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:48:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:48:32,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:48:32,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746945727] [2025-03-03 14:48:32,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746945727] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:48:32,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:48:32,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 14:48:32,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584978213] [2025-03-03 14:48:32,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:48:32,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:48:32,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:48:32,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:48:32,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 14:48:32,863 INFO L87 Difference]: Start difference. First operand 130183 states and 205335 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:35,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:48:35,143 INFO L93 Difference]: Finished difference Result 389528 states and 613982 transitions. [2025-03-03 14:48:35,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:48:35,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 177 [2025-03-03 14:48:35,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:48:35,576 INFO L225 Difference]: With dead ends: 389528 [2025-03-03 14:48:35,576 INFO L226 Difference]: Without dead ends: 259404 [2025-03-03 14:48:35,691 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 [2025-03-03 14:48:35,692 INFO L435 NwaCegarLoop]: 733 mSDtfsCounter, 349 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:48:35,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 1190 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:48:36,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259404 states. [2025-03-03 14:48:39,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259404 to 259402. [2025-03-03 14:48:39,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259402 states, 259401 states have (on average 1.567040990589859) internal successors, (406492), 259401 states have internal predecessors, (406492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:40,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259402 states to 259402 states and 406492 transitions. [2025-03-03 14:48:40,404 INFO L78 Accepts]: Start accepts. Automaton has 259402 states and 406492 transitions. Word has length 177 [2025-03-03 14:48:40,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:48:40,404 INFO L471 AbstractCegarLoop]: Abstraction has 259402 states and 406492 transitions. [2025-03-03 14:48:40,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:40,404 INFO L276 IsEmpty]: Start isEmpty. Operand 259402 states and 406492 transitions. [2025-03-03 14:48:40,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-03 14:48:40,409 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:48:40,409 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:48:40,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-03 14:48:40,410 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:48:40,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:48:40,410 INFO L85 PathProgramCache]: Analyzing trace with hash -579066800, now seen corresponding path program 1 times [2025-03-03 14:48:40,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:48:40,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712331147] [2025-03-03 14:48:40,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:48:40,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:48:40,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-03 14:48:40,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-03 14:48:40,437 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:48:40,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:48:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-03 14:48:40,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:48:40,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712331147] [2025-03-03 14:48:40,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712331147] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:48:40,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:48:40,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 14:48:40,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80575436] [2025-03-03 14:48:40,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:48:40,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:48:40,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:48:40,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:48:40,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 14:48:40,498 INFO L87 Difference]: Start difference. First operand 259402 states and 406492 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:48:44,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:48:44,974 INFO L93 Difference]: Finished difference Result 776226 states and 1215543 transitions. [2025-03-03 14:48:44,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:48:44,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 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 177 [2025-03-03 14:48:44,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:48:46,298 INFO L225 Difference]: With dead ends: 776226 [2025-03-03 14:48:46,299 INFO L226 Difference]: Without dead ends: 516911 [2025-03-03 14:48:46,425 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 [2025-03-03 14:48:46,426 INFO L435 NwaCegarLoop]: 713 mSDtfsCounter, 329 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:48:46,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 1170 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:48:46,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516911 states.