./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-31.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-31.i -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 1d61576bd95995863195e6d31603d7d0e0f99690d42c4edb47100435eb123db7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 15:21:18,629 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 15:21:18,689 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 15:21:18,696 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 15:21:18,697 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 15:21:18,721 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 15:21:18,722 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 15:21:18,722 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 15:21:18,722 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 15:21:18,722 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 15:21:18,722 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 15:21:18,723 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 15:21:18,723 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 15:21:18,723 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 15:21:18,723 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 15:21:18,723 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 15:21:18,724 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 15:21:18,724 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 15:21:18,725 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 15:21:18,725 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 15:21:18,725 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 15:21:18,725 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 15:21:18,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 15:21:18,725 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 15:21:18,725 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 15:21:18,725 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 15:21:18,725 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 15:21:18,725 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 15:21:18,725 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 15:21:18,725 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 15:21:18,725 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 15:21:18,726 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 15:21:18,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:21:18,726 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 15:21:18,726 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 15:21:18,726 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 15:21:18,726 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 15:21:18,726 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 15:21:18,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 15:21:18,726 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 15:21:18,726 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 15:21:18,726 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 15:21:18,726 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 15:21:18,727 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 -> 1d61576bd95995863195e6d31603d7d0e0f99690d42c4edb47100435eb123db7 [2025-03-08 15:21:18,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 15:21:18,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 15:21:18,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 15:21:18,979 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 15:21:18,980 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 15:21:18,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-31.i [2025-03-08 15:21:20,156 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/218215849/06857fd671c64af6b1e6d039766cfde8/FLAG8b16a6dcf [2025-03-08 15:21:20,414 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 15:21:20,415 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-31.i [2025-03-08 15:21:20,434 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/218215849/06857fd671c64af6b1e6d039766cfde8/FLAG8b16a6dcf [2025-03-08 15:21:20,455 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/218215849/06857fd671c64af6b1e6d039766cfde8 [2025-03-08 15:21:20,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 15:21:20,461 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 15:21:20,462 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 15:21:20,462 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 15:21:20,466 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 15:21:20,467 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:21:20" (1/1) ... [2025-03-08 15:21:20,469 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@413ec881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:21:20, skipping insertion in model container [2025-03-08 15:21:20,469 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:21:20" (1/1) ... [2025-03-08 15:21:20,497 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 15:21:20,614 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/hardness-nfm22/hardness_operatoramount_amount250_file-31.i[916,929] [2025-03-08 15:21:20,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:21:20,761 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 15:21:20,769 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/hardness-nfm22/hardness_operatoramount_amount250_file-31.i[916,929] [2025-03-08 15:21:20,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:21:20,842 INFO L204 MainTranslator]: Completed translation [2025-03-08 15:21:20,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:21:20 WrapperNode [2025-03-08 15:21:20,843 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 15:21:20,843 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 15:21:20,843 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 15:21:20,843 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 15:21:20,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:21:20" (1/1) ... [2025-03-08 15:21:20,860 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:21:20" (1/1) ... [2025-03-08 15:21:20,912 INFO L138 Inliner]: procedures = 26, calls = 71, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 450 [2025-03-08 15:21:20,913 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 15:21:20,913 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 15:21:20,914 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 15:21:20,914 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 15:21:20,920 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:21:20" (1/1) ... [2025-03-08 15:21:20,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:21:20" (1/1) ... [2025-03-08 15:21:20,936 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:21:20" (1/1) ... [2025-03-08 15:21:20,979 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 15:21:20,979 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:21:20" (1/1) ... [2025-03-08 15:21:20,979 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:21:20" (1/1) ... [2025-03-08 15:21:21,003 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:21:20" (1/1) ... [2025-03-08 15:21:21,009 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:21:20" (1/1) ... [2025-03-08 15:21:21,015 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:21:20" (1/1) ... [2025-03-08 15:21:21,019 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:21:20" (1/1) ... [2025-03-08 15:21:21,027 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 15:21:21,028 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 15:21:21,028 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 15:21:21,028 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 15:21:21,029 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:21:20" (1/1) ... [2025-03-08 15:21:21,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:21:21,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:21:21,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 15:21:21,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 15:21:21,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 15:21:21,076 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 15:21:21,076 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 15:21:21,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 15:21:21,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 15:21:21,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 15:21:21,165 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 15:21:21,167 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 15:21:21,822 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L373: havoc property_#t~ite43#1;havoc property_#t~bitwise42#1;havoc property_#t~short44#1;havoc property_#t~bitwise45#1;havoc property_#t~short46#1;havoc property_#t~bitwise47#1;havoc property_#t~short48#1; [2025-03-08 15:21:21,911 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2025-03-08 15:21:21,912 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 15:21:21,940 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 15:21:21,940 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 15:21:21,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:21:21 BoogieIcfgContainer [2025-03-08 15:21:21,941 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 15:21:21,943 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 15:21:21,943 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 15:21:21,946 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 15:21:21,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 03:21:20" (1/3) ... [2025-03-08 15:21:21,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b752b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:21:21, skipping insertion in model container [2025-03-08 15:21:21,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:21:20" (2/3) ... [2025-03-08 15:21:21,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b752b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:21:21, skipping insertion in model container [2025-03-08 15:21:21,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:21:21" (3/3) ... [2025-03-08 15:21:21,950 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-31.i [2025-03-08 15:21:21,960 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 15:21:21,965 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-31.i that has 2 procedures, 196 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 15:21:22,014 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 15:21:22,025 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;@521f5c7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 15:21:22,025 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 15:21:22,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 196 states, 135 states have (on average 1.474074074074074) internal successors, (199), 136 states have internal predecessors, (199), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2025-03-08 15:21:22,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2025-03-08 15:21:22,044 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:21:22,045 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:21:22,045 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:21:22,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:21:22,051 INFO L85 PathProgramCache]: Analyzing trace with hash -343718301, now seen corresponding path program 1 times [2025-03-08 15:21:22,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:21:22,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946708343] [2025-03-08 15:21:22,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:22,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:21:22,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 374 statements into 1 equivalence classes. [2025-03-08 15:21:22,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 374 of 374 statements. [2025-03-08 15:21:22,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:22,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:21:22,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 6498 trivial. 0 not checked. [2025-03-08 15:21:22,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:21:22,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946708343] [2025-03-08 15:21:22,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946708343] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:21:22,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184599332] [2025-03-08 15:21:22,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:22,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:21:22,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:21:22,490 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:21:22,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 15:21:22,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 374 statements into 1 equivalence classes. [2025-03-08 15:21:22,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 374 of 374 statements. [2025-03-08 15:21:22,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:22,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:21:22,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 15:21:22,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:21:22,792 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 6498 trivial. 0 not checked. [2025-03-08 15:21:22,792 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 15:21:22,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184599332] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:21:22,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:21:22,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 15:21:22,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101272038] [2025-03-08 15:21:22,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:21:22,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 15:21:22,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:21:22,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 15:21:22,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 15:21:22,819 INFO L87 Difference]: Start difference. First operand has 196 states, 135 states have (on average 1.474074074074074) internal successors, (199), 136 states have internal predecessors, (199), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 2 states have call successors, (58) [2025-03-08 15:21:22,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:21:22,873 INFO L93 Difference]: Finished difference Result 385 states and 681 transitions. [2025-03-08 15:21:22,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 15:21:22,875 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 2 states have call successors, (58) Word has length 374 [2025-03-08 15:21:22,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:21:22,880 INFO L225 Difference]: With dead ends: 385 [2025-03-08 15:21:22,881 INFO L226 Difference]: Without dead ends: 192 [2025-03-08 15:21:22,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 15:21:22,890 INFO L435 NwaCegarLoop]: 301 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:21:22,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 301 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:21:22,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2025-03-08 15:21:22,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2025-03-08 15:21:22,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 132 states have (on average 1.446969696969697) internal successors, (191), 132 states have internal predecessors, (191), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2025-03-08 15:21:22,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 307 transitions. [2025-03-08 15:21:22,940 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 307 transitions. Word has length 374 [2025-03-08 15:21:22,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:21:22,941 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 307 transitions. [2025-03-08 15:21:22,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 2 states have call successors, (58) [2025-03-08 15:21:22,941 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 307 transitions. [2025-03-08 15:21:22,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2025-03-08 15:21:22,952 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:21:22,952 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:21:22,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 15:21:23,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 15:21:23,153 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:21:23,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:21:23,154 INFO L85 PathProgramCache]: Analyzing trace with hash 872277405, now seen corresponding path program 1 times [2025-03-08 15:21:23,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:21:23,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135601949] [2025-03-08 15:21:23,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:23,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:21:23,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 374 statements into 1 equivalence classes. [2025-03-08 15:21:23,259 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 374 of 374 statements. [2025-03-08 15:21:23,260 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:23,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:21:23,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2025-03-08 15:21:23,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:21:23,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135601949] [2025-03-08 15:21:23,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135601949] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:21:23,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:21:23,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:21:23,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965521161] [2025-03-08 15:21:23,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:21:23,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:21:23,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:21:23,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:21:23,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:21:23,515 INFO L87 Difference]: Start difference. First operand 192 states and 307 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-03-08 15:21:23,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:21:23,617 INFO L93 Difference]: Finished difference Result 562 states and 899 transitions. [2025-03-08 15:21:23,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:21:23,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 374 [2025-03-08 15:21:23,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:21:23,622 INFO L225 Difference]: With dead ends: 562 [2025-03-08 15:21:23,624 INFO L226 Difference]: Without dead ends: 373 [2025-03-08 15:21:23,625 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:21:23,627 INFO L435 NwaCegarLoop]: 342 mSDtfsCounter, 270 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:21:23,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 617 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:21:23,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2025-03-08 15:21:23,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 370. [2025-03-08 15:21:23,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 251 states have (on average 1.4143426294820718) internal successors, (355), 251 states have internal predecessors, (355), 116 states have call successors, (116), 2 states have call predecessors, (116), 2 states have return successors, (116), 116 states have call predecessors, (116), 116 states have call successors, (116) [2025-03-08 15:21:23,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 587 transitions. [2025-03-08 15:21:23,696 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 587 transitions. Word has length 374 [2025-03-08 15:21:23,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:21:23,697 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 587 transitions. [2025-03-08 15:21:23,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-03-08 15:21:23,697 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 587 transitions. [2025-03-08 15:21:23,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2025-03-08 15:21:23,705 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:21:23,706 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:21:23,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 15:21:23,706 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:21:23,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:21:23,707 INFO L85 PathProgramCache]: Analyzing trace with hash -666585806, now seen corresponding path program 1 times [2025-03-08 15:21:23,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:21:23,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649312778] [2025-03-08 15:21:23,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:23,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:21:23,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 375 statements into 1 equivalence classes. [2025-03-08 15:21:23,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 375 of 375 statements. [2025-03-08 15:21:23,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:23,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:21:24,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2025-03-08 15:21:24,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:21:24,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649312778] [2025-03-08 15:21:24,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649312778] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:21:24,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:21:24,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 15:21:24,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653379149] [2025-03-08 15:21:24,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:21:24,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 15:21:24,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:21:24,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 15:21:24,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-08 15:21:24,555 INFO L87 Difference]: Start difference. First operand 370 states and 587 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2025-03-08 15:21:25,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:21:25,268 INFO L93 Difference]: Finished difference Result 1179 states and 1847 transitions. [2025-03-08 15:21:25,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 15:21:25,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 375 [2025-03-08 15:21:25,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:21:25,274 INFO L225 Difference]: With dead ends: 1179 [2025-03-08 15:21:25,274 INFO L226 Difference]: Without dead ends: 812 [2025-03-08 15:21:25,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2025-03-08 15:21:25,276 INFO L435 NwaCegarLoop]: 516 mSDtfsCounter, 617 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 15:21:25,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 1322 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 15:21:25,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2025-03-08 15:21:25,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 722. [2025-03-08 15:21:25,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 538 states have (on average 1.4349442379182156) internal successors, (772), 539 states have internal predecessors, (772), 179 states have call successors, (179), 4 states have call predecessors, (179), 4 states have return successors, (179), 178 states have call predecessors, (179), 179 states have call successors, (179) [2025-03-08 15:21:25,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1130 transitions. [2025-03-08 15:21:25,361 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1130 transitions. Word has length 375 [2025-03-08 15:21:25,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:21:25,362 INFO L471 AbstractCegarLoop]: Abstraction has 722 states and 1130 transitions. [2025-03-08 15:21:25,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2025-03-08 15:21:25,363 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1130 transitions. [2025-03-08 15:21:25,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2025-03-08 15:21:25,367 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:21:25,367 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:21:25,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 15:21:25,368 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:21:25,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:21:25,369 INFO L85 PathProgramCache]: Analyzing trace with hash -832171581, now seen corresponding path program 1 times [2025-03-08 15:21:25,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:21:25,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805062629] [2025-03-08 15:21:25,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:25,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:21:25,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 375 statements into 1 equivalence classes. [2025-03-08 15:21:25,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 375 of 375 statements. [2025-03-08 15:21:25,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:25,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:21:25,757 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2025-03-08 15:21:25,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:21:25,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805062629] [2025-03-08 15:21:25,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805062629] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:21:25,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:21:25,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:21:25,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489677395] [2025-03-08 15:21:25,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:21:25,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:21:25,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:21:25,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:21:25,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:21:25,759 INFO L87 Difference]: Start difference. First operand 722 states and 1130 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-03-08 15:21:25,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:21:25,803 INFO L93 Difference]: Finished difference Result 1441 states and 2257 transitions. [2025-03-08 15:21:25,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:21:25,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 375 [2025-03-08 15:21:25,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:21:25,810 INFO L225 Difference]: With dead ends: 1441 [2025-03-08 15:21:25,810 INFO L226 Difference]: Without dead ends: 722 [2025-03-08 15:21:25,812 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:21:25,812 INFO L435 NwaCegarLoop]: 298 mSDtfsCounter, 0 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:21:25,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 593 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:21:25,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2025-03-08 15:21:25,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 722. [2025-03-08 15:21:25,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 538 states have (on average 1.4275092936802973) internal successors, (768), 539 states have internal predecessors, (768), 179 states have call successors, (179), 4 states have call predecessors, (179), 4 states have return successors, (179), 178 states have call predecessors, (179), 179 states have call successors, (179) [2025-03-08 15:21:25,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1126 transitions. [2025-03-08 15:21:25,873 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1126 transitions. Word has length 375 [2025-03-08 15:21:25,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:21:25,875 INFO L471 AbstractCegarLoop]: Abstraction has 722 states and 1126 transitions. [2025-03-08 15:21:25,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-03-08 15:21:25,876 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1126 transitions. [2025-03-08 15:21:25,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2025-03-08 15:21:25,881 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:21:25,881 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:21:25,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 15:21:25,882 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:21:25,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:21:25,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1754855164, now seen corresponding path program 1 times [2025-03-08 15:21:25,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:21:25,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99277018] [2025-03-08 15:21:25,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:25,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:21:25,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 375 statements into 1 equivalence classes. [2025-03-08 15:21:26,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 375 of 375 statements. [2025-03-08 15:21:26,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:26,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:21:26,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2025-03-08 15:21:26,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:21:26,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99277018] [2025-03-08 15:21:26,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99277018] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:21:26,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:21:26,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 15:21:26,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866612299] [2025-03-08 15:21:26,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:21:26,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 15:21:26,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:21:26,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 15:21:26,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:21:26,534 INFO L87 Difference]: Start difference. First operand 722 states and 1126 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-03-08 15:21:27,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:21:27,031 INFO L93 Difference]: Finished difference Result 1845 states and 2867 transitions. [2025-03-08 15:21:27,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 15:21:27,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 375 [2025-03-08 15:21:27,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:21:27,038 INFO L225 Difference]: With dead ends: 1845 [2025-03-08 15:21:27,039 INFO L226 Difference]: Without dead ends: 1126 [2025-03-08 15:21:27,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 15:21:27,042 INFO L435 NwaCegarLoop]: 287 mSDtfsCounter, 201 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 15:21:27,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1005 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 15:21:27,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2025-03-08 15:21:27,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1098. [2025-03-08 15:21:27,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 855 states have (on average 1.4397660818713451) internal successors, (1231), 856 states have internal predecessors, (1231), 237 states have call successors, (237), 5 states have call predecessors, (237), 5 states have return successors, (237), 236 states have call predecessors, (237), 237 states have call successors, (237) [2025-03-08 15:21:27,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1705 transitions. [2025-03-08 15:21:27,157 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1705 transitions. Word has length 375 [2025-03-08 15:21:27,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:21:27,158 INFO L471 AbstractCegarLoop]: Abstraction has 1098 states and 1705 transitions. [2025-03-08 15:21:27,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-03-08 15:21:27,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1705 transitions. [2025-03-08 15:21:27,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2025-03-08 15:21:27,160 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:21:27,161 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:21:27,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 15:21:27,161 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:21:27,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:21:27,162 INFO L85 PathProgramCache]: Analyzing trace with hash 303504158, now seen corresponding path program 1 times [2025-03-08 15:21:27,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:21:27,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905927452] [2025-03-08 15:21:27,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:27,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:21:27,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 376 statements into 1 equivalence classes. [2025-03-08 15:21:27,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 376 of 376 statements. [2025-03-08 15:21:27,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:27,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:21:27,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2025-03-08 15:21:27,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:21:27,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905927452] [2025-03-08 15:21:27,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905927452] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:21:27,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:21:27,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 15:21:27,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128494183] [2025-03-08 15:21:27,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:21:27,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 15:21:27,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:21:27,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 15:21:27,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:21:27,482 INFO L87 Difference]: Start difference. First operand 1098 states and 1705 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-03-08 15:21:27,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:21:27,728 INFO L93 Difference]: Finished difference Result 2112 states and 3270 transitions. [2025-03-08 15:21:27,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 15:21:27,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 376 [2025-03-08 15:21:27,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:21:27,736 INFO L225 Difference]: With dead ends: 2112 [2025-03-08 15:21:27,737 INFO L226 Difference]: Without dead ends: 1118 [2025-03-08 15:21:27,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:21:27,740 INFO L435 NwaCegarLoop]: 296 mSDtfsCounter, 258 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:21:27,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 866 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 15:21:27,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2025-03-08 15:21:27,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 1092. [2025-03-08 15:21:27,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 849 states have (on average 1.4358068315665489) internal successors, (1219), 850 states have internal predecessors, (1219), 237 states have call successors, (237), 5 states have call predecessors, (237), 5 states have return successors, (237), 236 states have call predecessors, (237), 237 states have call successors, (237) [2025-03-08 15:21:27,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1693 transitions. [2025-03-08 15:21:27,819 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1693 transitions. Word has length 376 [2025-03-08 15:21:27,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:21:27,820 INFO L471 AbstractCegarLoop]: Abstraction has 1092 states and 1693 transitions. [2025-03-08 15:21:27,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-03-08 15:21:27,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1693 transitions. [2025-03-08 15:21:27,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2025-03-08 15:21:27,822 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:21:27,822 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:21:27,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 15:21:27,823 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:21:27,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:21:27,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1728891029, now seen corresponding path program 1 times [2025-03-08 15:21:27,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:21:27,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382812567] [2025-03-08 15:21:27,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:27,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:21:27,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 377 statements into 1 equivalence classes. [2025-03-08 15:21:27,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 377 of 377 statements. [2025-03-08 15:21:27,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:27,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:21:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2025-03-08 15:21:28,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:21:28,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382812567] [2025-03-08 15:21:28,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382812567] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:21:28,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:21:28,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 15:21:28,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459049651] [2025-03-08 15:21:28,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:21:28,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 15:21:28,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:21:28,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 15:21:28,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:21:28,117 INFO L87 Difference]: Start difference. First operand 1092 states and 1693 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-03-08 15:21:28,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:21:28,454 INFO L93 Difference]: Finished difference Result 2738 states and 4237 transitions. [2025-03-08 15:21:28,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 15:21:28,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 377 [2025-03-08 15:21:28,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:21:28,463 INFO L225 Difference]: With dead ends: 2738 [2025-03-08 15:21:28,463 INFO L226 Difference]: Without dead ends: 1755 [2025-03-08 15:21:28,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:21:28,466 INFO L435 NwaCegarLoop]: 302 mSDtfsCounter, 405 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:21:28,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 875 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 15:21:28,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2025-03-08 15:21:28,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1456. [2025-03-08 15:21:28,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1095 states have (on average 1.4164383561643836) internal successors, (1551), 1096 states have internal predecessors, (1551), 353 states have call successors, (353), 7 states have call predecessors, (353), 7 states have return successors, (353), 352 states have call predecessors, (353), 353 states have call successors, (353) [2025-03-08 15:21:28,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 2257 transitions. [2025-03-08 15:21:28,571 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 2257 transitions. Word has length 377 [2025-03-08 15:21:28,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:21:28,572 INFO L471 AbstractCegarLoop]: Abstraction has 1456 states and 2257 transitions. [2025-03-08 15:21:28,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-03-08 15:21:28,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 2257 transitions. [2025-03-08 15:21:28,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2025-03-08 15:21:28,574 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:21:28,574 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:21:28,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 15:21:28,575 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:21:28,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:21:28,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1184052054, now seen corresponding path program 1 times [2025-03-08 15:21:28,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:21:28,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439818543] [2025-03-08 15:21:28,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:28,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:21:28,612 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 377 statements into 1 equivalence classes. [2025-03-08 15:21:28,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 377 of 377 statements. [2025-03-08 15:21:28,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:28,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:21:29,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 195 proven. 141 refuted. 0 times theorem prover too weak. 6276 trivial. 0 not checked. [2025-03-08 15:21:29,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:21:29,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439818543] [2025-03-08 15:21:29,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439818543] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:21:29,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555287016] [2025-03-08 15:21:29,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:29,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:21:29,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:21:29,404 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:21:29,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 15:21:29,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 377 statements into 1 equivalence classes. [2025-03-08 15:21:29,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 377 of 377 statements. [2025-03-08 15:21:29,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:29,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:21:29,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-03-08 15:21:29,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:21:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 1630 proven. 174 refuted. 0 times theorem prover too weak. 4808 trivial. 0 not checked. [2025-03-08 15:21:30,790 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:21:31,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555287016] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:21:31,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-08 15:21:31,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 22] total 26 [2025-03-08 15:21:31,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970273067] [2025-03-08 15:21:31,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-08 15:21:31,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-08 15:21:31,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:21:31,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-08 15:21:31,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2025-03-08 15:21:31,082 INFO L87 Difference]: Start difference. First operand 1456 states and 2257 transitions. Second operand has 26 states, 26 states have (on average 7.269230769230769) internal successors, (189), 24 states have internal predecessors, (189), 9 states have call successors, (116), 6 states have call predecessors, (116), 9 states have return successors, (116), 10 states have call predecessors, (116), 9 states have call successors, (116) [2025-03-08 15:21:36,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:21:36,376 INFO L93 Difference]: Finished difference Result 7753 states and 11511 transitions. [2025-03-08 15:21:36,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2025-03-08 15:21:36,377 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.269230769230769) internal successors, (189), 24 states have internal predecessors, (189), 9 states have call successors, (116), 6 states have call predecessors, (116), 9 states have return successors, (116), 10 states have call predecessors, (116), 9 states have call successors, (116) Word has length 377 [2025-03-08 15:21:36,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:21:36,401 INFO L225 Difference]: With dead ends: 7753 [2025-03-08 15:21:36,401 INFO L226 Difference]: Without dead ends: 6406 [2025-03-08 15:21:36,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4623 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2451, Invalid=11591, Unknown=0, NotChecked=0, Total=14042 [2025-03-08 15:21:36,407 INFO L435 NwaCegarLoop]: 466 mSDtfsCounter, 3488 mSDsluCounter, 2889 mSDsCounter, 0 mSdLazyCounter, 2630 mSolverCounterSat, 1838 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3539 SdHoareTripleChecker+Valid, 3355 SdHoareTripleChecker+Invalid, 4468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1838 IncrementalHoareTripleChecker+Valid, 2630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-08 15:21:36,408 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3539 Valid, 3355 Invalid, 4468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1838 Valid, 2630 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-08 15:21:36,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6406 states. [2025-03-08 15:21:36,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6406 to 3909. [2025-03-08 15:21:36,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3909 states, 3175 states have (on average 1.4154330708661418) internal successors, (4494), 3177 states have internal predecessors, (4494), 648 states have call successors, (648), 85 states have call predecessors, (648), 85 states have return successors, (648), 646 states have call predecessors, (648), 648 states have call successors, (648) [2025-03-08 15:21:36,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3909 states to 3909 states and 5790 transitions. [2025-03-08 15:21:36,773 INFO L78 Accepts]: Start accepts. Automaton has 3909 states and 5790 transitions. Word has length 377 [2025-03-08 15:21:36,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:21:36,774 INFO L471 AbstractCegarLoop]: Abstraction has 3909 states and 5790 transitions. [2025-03-08 15:21:36,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.269230769230769) internal successors, (189), 24 states have internal predecessors, (189), 9 states have call successors, (116), 6 states have call predecessors, (116), 9 states have return successors, (116), 10 states have call predecessors, (116), 9 states have call successors, (116) [2025-03-08 15:21:36,775 INFO L276 IsEmpty]: Start isEmpty. Operand 3909 states and 5790 transitions. [2025-03-08 15:21:36,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2025-03-08 15:21:36,778 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:21:36,778 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:21:36,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 15:21:36,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-08 15:21:36,980 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:21:36,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:21:36,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1597641891, now seen corresponding path program 1 times [2025-03-08 15:21:36,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:21:36,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712655674] [2025-03-08 15:21:36,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:36,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:21:37,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 379 statements into 1 equivalence classes. [2025-03-08 15:21:37,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 379 of 379 statements. [2025-03-08 15:21:37,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:37,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 15:21:37,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1766564762] [2025-03-08 15:21:37,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:37,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:21:37,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:21:37,282 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:21:37,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 15:21:37,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 379 statements into 1 equivalence classes. [2025-03-08 15:21:37,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 379 of 379 statements. [2025-03-08 15:21:37,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:37,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:21:37,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-08 15:21:37,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:21:38,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 1641 proven. 147 refuted. 0 times theorem prover too weak. 4824 trivial. 0 not checked. [2025-03-08 15:21:38,063 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:21:38,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2025-03-08 15:21:38,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:21:38,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712655674] [2025-03-08 15:21:38,428 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 15:21:38,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766564762] [2025-03-08 15:21:38,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766564762] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 15:21:38,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:21:38,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2025-03-08 15:21:38,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630295879] [2025-03-08 15:21:38,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:21:38,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 15:21:38,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:21:38,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 15:21:38,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2025-03-08 15:21:38,430 INFO L87 Difference]: Start difference. First operand 3909 states and 5790 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-03-08 15:21:39,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:21:39,238 INFO L93 Difference]: Finished difference Result 16069 states and 23901 transitions. [2025-03-08 15:21:39,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 15:21:39,239 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 379 [2025-03-08 15:21:39,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:21:39,284 INFO L225 Difference]: With dead ends: 16069 [2025-03-08 15:21:39,284 INFO L226 Difference]: Without dead ends: 12457 [2025-03-08 15:21:39,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 763 GetRequests, 744 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2025-03-08 15:21:39,296 INFO L435 NwaCegarLoop]: 351 mSDtfsCounter, 960 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 15:21:39,296 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 1716 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 15:21:39,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12457 states. [2025-03-08 15:21:39,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12457 to 5833. [2025-03-08 15:21:39,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5833 states, 5035 states have (on average 1.44428997020854) internal successors, (7272), 5045 states have internal predecessors, (7272), 700 states have call successors, (700), 97 states have call predecessors, (700), 97 states have return successors, (700), 690 states have call predecessors, (700), 700 states have call successors, (700) [2025-03-08 15:21:39,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5833 states to 5833 states and 8672 transitions. [2025-03-08 15:21:39,615 INFO L78 Accepts]: Start accepts. Automaton has 5833 states and 8672 transitions. Word has length 379 [2025-03-08 15:21:39,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:21:39,616 INFO L471 AbstractCegarLoop]: Abstraction has 5833 states and 8672 transitions. [2025-03-08 15:21:39,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-03-08 15:21:39,616 INFO L276 IsEmpty]: Start isEmpty. Operand 5833 states and 8672 transitions. [2025-03-08 15:21:39,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2025-03-08 15:21:39,618 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:21:39,619 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:21:39,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 15:21:39,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:21:39,819 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:21:39,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:21:39,820 INFO L85 PathProgramCache]: Analyzing trace with hash -636027874, now seen corresponding path program 1 times [2025-03-08 15:21:39,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:21:39,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247665620] [2025-03-08 15:21:39,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:39,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:21:39,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 379 statements into 1 equivalence classes. [2025-03-08 15:21:39,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 379 of 379 statements. [2025-03-08 15:21:39,980 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:39,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:21:41,170 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 6 proven. 165 refuted. 0 times theorem prover too weak. 6441 trivial. 0 not checked. [2025-03-08 15:21:41,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:21:41,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247665620] [2025-03-08 15:21:41,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247665620] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:21:41,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211683471] [2025-03-08 15:21:41,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:41,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:21:41,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:21:41,173 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:21:41,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 15:21:41,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 379 statements into 1 equivalence classes. [2025-03-08 15:21:41,368 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 379 of 379 statements. [2025-03-08 15:21:41,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:41,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:21:41,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-08 15:21:41,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:21:42,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 501 proven. 165 refuted. 0 times theorem prover too weak. 5946 trivial. 0 not checked. [2025-03-08 15:21:42,531 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:21:43,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211683471] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:21:43,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-08 15:21:43,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2025-03-08 15:21:43,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186311157] [2025-03-08 15:21:43,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-08 15:21:43,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-08 15:21:43,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:21:43,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-08 15:21:43,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2025-03-08 15:21:43,074 INFO L87 Difference]: Start difference. First operand 5833 states and 8672 transitions. Second operand has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 2 states have call successors, (116), 3 states have call predecessors, (116), 5 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2025-03-08 15:21:44,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:21:44,789 INFO L93 Difference]: Finished difference Result 11693 states and 17333 transitions. [2025-03-08 15:21:44,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-08 15:21:44,795 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 2 states have call successors, (116), 3 states have call predecessors, (116), 5 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) Word has length 379 [2025-03-08 15:21:44,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:21:44,825 INFO L225 Difference]: With dead ends: 11693 [2025-03-08 15:21:44,825 INFO L226 Difference]: Without dead ends: 6553 [2025-03-08 15:21:44,835 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2025-03-08 15:21:44,836 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 329 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 1625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-08 15:21:44,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 1616 Invalid, 1625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-08 15:21:44,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6553 states. [2025-03-08 15:21:45,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6553 to 5833. [2025-03-08 15:21:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5833 states, 5030 states have (on average 1.440755467196819) internal successors, (7247), 5040 states have internal predecessors, (7247), 700 states have call successors, (700), 102 states have call predecessors, (700), 102 states have return successors, (700), 690 states have call predecessors, (700), 700 states have call successors, (700) [2025-03-08 15:21:45,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5833 states to 5833 states and 8647 transitions. [2025-03-08 15:21:45,084 INFO L78 Accepts]: Start accepts. Automaton has 5833 states and 8647 transitions. Word has length 379 [2025-03-08 15:21:45,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:21:45,084 INFO L471 AbstractCegarLoop]: Abstraction has 5833 states and 8647 transitions. [2025-03-08 15:21:45,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 2 states have call successors, (116), 3 states have call predecessors, (116), 5 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2025-03-08 15:21:45,085 INFO L276 IsEmpty]: Start isEmpty. Operand 5833 states and 8647 transitions. [2025-03-08 15:21:45,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2025-03-08 15:21:45,087 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:21:45,087 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:21:45,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 15:21:45,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:21:45,292 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:21:45,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:21:45,292 INFO L85 PathProgramCache]: Analyzing trace with hash 70849598, now seen corresponding path program 1 times [2025-03-08 15:21:45,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:21:45,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257016097] [2025-03-08 15:21:45,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:45,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:21:45,308 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 379 statements into 1 equivalence classes. [2025-03-08 15:21:45,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 379 of 379 statements. [2025-03-08 15:21:45,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:45,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:21:48,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2025-03-08 15:21:48,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:21:48,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257016097] [2025-03-08 15:21:48,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257016097] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:21:48,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:21:48,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 15:21:48,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250160467] [2025-03-08 15:21:48,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:21:48,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 15:21:48,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:21:48,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 15:21:48,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:21:48,104 INFO L87 Difference]: Start difference. First operand 5833 states and 8647 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-03-08 15:21:48,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:21:48,609 INFO L93 Difference]: Finished difference Result 14739 states and 21910 transitions. [2025-03-08 15:21:48,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 15:21:48,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 379 [2025-03-08 15:21:48,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:21:48,637 INFO L225 Difference]: With dead ends: 14739 [2025-03-08 15:21:48,637 INFO L226 Difference]: Without dead ends: 9627 [2025-03-08 15:21:48,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:21:48,648 INFO L435 NwaCegarLoop]: 297 mSDtfsCounter, 255 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:21:48,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 791 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 15:21:48,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9627 states. [2025-03-08 15:21:48,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9627 to 7463. [2025-03-08 15:21:48,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7463 states, 6612 states have (on average 1.4621899576527526) internal successors, (9668), 6634 states have internal predecessors, (9668), 736 states have call successors, (736), 114 states have call predecessors, (736), 114 states have return successors, (736), 714 states have call predecessors, (736), 736 states have call successors, (736) [2025-03-08 15:21:49,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7463 states to 7463 states and 11140 transitions. [2025-03-08 15:21:49,044 INFO L78 Accepts]: Start accepts. Automaton has 7463 states and 11140 transitions. Word has length 379 [2025-03-08 15:21:49,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:21:49,047 INFO L471 AbstractCegarLoop]: Abstraction has 7463 states and 11140 transitions. [2025-03-08 15:21:49,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-03-08 15:21:49,047 INFO L276 IsEmpty]: Start isEmpty. Operand 7463 states and 11140 transitions. [2025-03-08 15:21:49,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2025-03-08 15:21:49,067 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:21:49,068 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:21:49,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 15:21:49,068 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:21:49,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:21:49,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1173914883, now seen corresponding path program 1 times [2025-03-08 15:21:49,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:21:49,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795775627] [2025-03-08 15:21:49,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:49,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:21:49,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 379 statements into 1 equivalence classes. [2025-03-08 15:21:49,527 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 379 of 379 statements. [2025-03-08 15:21:49,528 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:49,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 15:21:49,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1421209855] [2025-03-08 15:21:49,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:49,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:21:49,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:21:49,533 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:21:49,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 15:21:49,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 379 statements into 1 equivalence classes. [2025-03-08 15:21:49,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 379 of 379 statements. [2025-03-08 15:21:49,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:49,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:21:49,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-08 15:21:49,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:21:51,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 4233 proven. 441 refuted. 0 times theorem prover too weak. 1938 trivial. 0 not checked. [2025-03-08 15:21:51,633 INFO L312 TraceCheckSpWp]: Computing backward predicates...