./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-34.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_codestructure_dependencies_file-34.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 ef5fa028017d876074069fbbea93055df8f895424627b4673992e11de8e7d01a --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 09:47:54,013 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 09:47:54,066 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 09:47:54,069 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 09:47:54,070 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 09:47:54,093 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 09:47:54,094 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 09:47:54,094 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 09:47:54,095 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 09:47:54,095 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 09:47:54,095 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 09:47:54,096 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 09:47:54,096 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 09:47:54,096 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 09:47:54,096 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 09:47:54,096 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 09:47:54,097 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 09:47:54,097 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 09:47:54,097 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 09:47:54,097 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 09:47:54,097 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 09:47:54,097 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 09:47:54,097 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 09:47:54,097 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 09:47:54,097 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 09:47:54,097 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 09:47:54,097 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 09:47:54,097 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 09:47:54,097 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 09:47:54,098 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 09:47:54,098 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 09:47:54,098 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 09:47:54,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 09:47:54,098 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 09:47:54,098 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 09:47:54,099 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 09:47:54,099 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 09:47:54,099 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 09:47:54,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 09:47:54,099 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 09:47:54,099 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 09:47:54,099 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 09:47:54,099 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 09:47:54,099 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 -> ef5fa028017d876074069fbbea93055df8f895424627b4673992e11de8e7d01a [2025-03-08 09:47:54,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 09:47:54,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 09:47:54,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 09:47:54,349 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 09:47:54,350 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 09:47:54,350 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-34.i [2025-03-08 09:47:55,483 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/887157ca8/abe6a4e76366465b88cb1eb2cf1174ab/FLAG612007500 [2025-03-08 09:47:55,730 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 09:47:55,730 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-34.i [2025-03-08 09:47:55,746 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/887157ca8/abe6a4e76366465b88cb1eb2cf1174ab/FLAG612007500 [2025-03-08 09:47:56,055 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/887157ca8/abe6a4e76366465b88cb1eb2cf1174ab [2025-03-08 09:47:56,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 09:47:56,058 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 09:47:56,058 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 09:47:56,059 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 09:47:56,061 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 09:47:56,062 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:47:56" (1/1) ... [2025-03-08 09:47:56,062 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dc0532f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:47:56, skipping insertion in model container [2025-03-08 09:47:56,063 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:47:56" (1/1) ... [2025-03-08 09:47:56,074 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 09:47:56,152 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_codestructure_dependencies_file-34.i[919,932] [2025-03-08 09:47:56,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 09:47:56,201 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 09:47:56,208 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_codestructure_dependencies_file-34.i[919,932] [2025-03-08 09:47:56,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 09:47:56,240 INFO L204 MainTranslator]: Completed translation [2025-03-08 09:47:56,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:47:56 WrapperNode [2025-03-08 09:47:56,240 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 09:47:56,242 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 09:47:56,242 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 09:47:56,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 09:47:56,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:47:56" (1/1) ... [2025-03-08 09:47:56,256 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:47:56" (1/1) ... [2025-03-08 09:47:56,275 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 166 [2025-03-08 09:47:56,275 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 09:47:56,276 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 09:47:56,276 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 09:47:56,276 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 09:47:56,286 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:47:56" (1/1) ... [2025-03-08 09:47:56,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:47:56" (1/1) ... [2025-03-08 09:47:56,290 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:47:56" (1/1) ... [2025-03-08 09:47:56,308 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 09:47:56,308 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:47:56" (1/1) ... [2025-03-08 09:47:56,308 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:47:56" (1/1) ... [2025-03-08 09:47:56,313 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:47:56" (1/1) ... [2025-03-08 09:47:56,314 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:47:56" (1/1) ... [2025-03-08 09:47:56,315 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:47:56" (1/1) ... [2025-03-08 09:47:56,316 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:47:56" (1/1) ... [2025-03-08 09:47:56,318 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 09:47:56,319 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 09:47:56,319 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 09:47:56,319 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 09:47:56,319 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:47:56" (1/1) ... [2025-03-08 09:47:56,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 09:47:56,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 09:47:56,345 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 09:47:56,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 09:47:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 09:47:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 09:47:56,366 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 09:47:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 09:47:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 09:47:56,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 09:47:56,420 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 09:47:56,422 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 09:47:56,718 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L118: havoc property_#t~bitwise13#1;havoc property_#t~ite15#1;havoc property_#t~bitwise14#1;havoc property_#t~short16#1; [2025-03-08 09:47:56,743 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2025-03-08 09:47:56,743 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 09:47:56,764 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 09:47:56,765 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 09:47:56,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:47:56 BoogieIcfgContainer [2025-03-08 09:47:56,765 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 09:47:56,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 09:47:56,767 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 09:47:56,770 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 09:47:56,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 09:47:56" (1/3) ... [2025-03-08 09:47:56,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0143c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:47:56, skipping insertion in model container [2025-03-08 09:47:56,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:47:56" (2/3) ... [2025-03-08 09:47:56,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0143c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:47:56, skipping insertion in model container [2025-03-08 09:47:56,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:47:56" (3/3) ... [2025-03-08 09:47:56,772 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_dependencies_file-34.i [2025-03-08 09:47:56,783 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 09:47:56,784 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_codestructure_dependencies_file-34.i that has 2 procedures, 68 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 09:47:56,822 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 09:47:56,831 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;@418ebc35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 09:47:56,832 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 09:47:56,836 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 52 states have (on average 1.5) internal successors, (78), 53 states have internal predecessors, (78), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-08 09:47:56,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-08 09:47:56,842 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:47:56,843 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:47:56,843 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:47:56,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:47:56,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1593965798, now seen corresponding path program 1 times [2025-03-08 09:47:56,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:47:56,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074979508] [2025-03-08 09:47:56,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:47:56,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:47:56,914 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-08 09:47:56,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-08 09:47:56,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:47:56,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:47:57,337 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 09:47:57,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:47:57,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074979508] [2025-03-08 09:47:57,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074979508] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:47:57,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:47:57,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 09:47:57,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144391916] [2025-03-08 09:47:57,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:47:57,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 09:47:57,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:47:57,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 09:47:57,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 09:47:57,364 INFO L87 Difference]: Start difference. First operand has 68 states, 52 states have (on average 1.5) internal successors, (78), 53 states have internal predecessors, (78), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:47:57,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:47:57,523 INFO L93 Difference]: Finished difference Result 220 states and 373 transitions. [2025-03-08 09:47:57,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 09:47:57,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2025-03-08 09:47:57,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:47:57,532 INFO L225 Difference]: With dead ends: 220 [2025-03-08 09:47:57,534 INFO L226 Difference]: Without dead ends: 155 [2025-03-08 09:47:57,538 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 09:47:57,540 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 125 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 09:47:57,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 299 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 09:47:57,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-03-08 09:47:57,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 127. [2025-03-08 09:47:57,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 98 states have (on average 1.4591836734693877) internal successors, (143), 98 states have internal predecessors, (143), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-08 09:47:57,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 195 transitions. [2025-03-08 09:47:57,586 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 195 transitions. Word has length 92 [2025-03-08 09:47:57,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:47:57,587 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 195 transitions. [2025-03-08 09:47:57,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:47:57,588 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 195 transitions. [2025-03-08 09:47:57,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-08 09:47:57,590 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:47:57,591 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:47:57,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 09:47:57,591 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:47:57,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:47:57,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1193707330, now seen corresponding path program 1 times [2025-03-08 09:47:57,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:47:57,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260865301] [2025-03-08 09:47:57,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:47:57,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:47:57,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-08 09:47:57,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-08 09:47:57,628 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:47:57,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:47:57,809 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 09:47:57,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:47:57,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260865301] [2025-03-08 09:47:57,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260865301] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:47:57,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:47:57,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 09:47:57,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886821592] [2025-03-08 09:47:57,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:47:57,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 09:47:57,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:47:57,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 09:47:57,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 09:47:57,813 INFO L87 Difference]: Start difference. First operand 127 states and 195 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:47:57,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:47:57,994 INFO L93 Difference]: Finished difference Result 406 states and 619 transitions. [2025-03-08 09:47:57,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 09:47:57,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 93 [2025-03-08 09:47:57,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:47:57,997 INFO L225 Difference]: With dead ends: 406 [2025-03-08 09:47:57,999 INFO L226 Difference]: Without dead ends: 282 [2025-03-08 09:47:58,000 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 09:47:58,000 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 158 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 09:47:58,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 256 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 09:47:58,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2025-03-08 09:47:58,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 129. [2025-03-08 09:47:58,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 100 states have (on average 1.43) internal successors, (143), 100 states have internal predecessors, (143), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-08 09:47:58,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 195 transitions. [2025-03-08 09:47:58,033 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 195 transitions. Word has length 93 [2025-03-08 09:47:58,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:47:58,033 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 195 transitions. [2025-03-08 09:47:58,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:47:58,034 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 195 transitions. [2025-03-08 09:47:58,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-08 09:47:58,037 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:47:58,037 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:47:58,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 09:47:58,037 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:47:58,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:47:58,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1775860471, now seen corresponding path program 1 times [2025-03-08 09:47:58,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:47:58,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029805008] [2025-03-08 09:47:58,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:47:58,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:47:58,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-08 09:47:58,104 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-08 09:47:58,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:47:58,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:47:59,747 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 09:47:59,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:47:59,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029805008] [2025-03-08 09:47:59,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029805008] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:47:59,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:47:59,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 09:47:59,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386918385] [2025-03-08 09:47:59,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:47:59,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 09:47:59,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:47:59,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 09:47:59,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 09:47:59,753 INFO L87 Difference]: Start difference. First operand 129 states and 195 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:48:00,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:48:00,063 INFO L93 Difference]: Finished difference Result 396 states and 596 transitions. [2025-03-08 09:48:00,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 09:48:00,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 94 [2025-03-08 09:48:00,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:48:00,065 INFO L225 Difference]: With dead ends: 396 [2025-03-08 09:48:00,065 INFO L226 Difference]: Without dead ends: 270 [2025-03-08 09:48:00,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-08 09:48:00,066 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 154 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 09:48:00,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 253 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 09:48:00,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2025-03-08 09:48:00,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 176. [2025-03-08 09:48:00,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 133 states have (on average 1.413533834586466) internal successors, (188), 133 states have internal predecessors, (188), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2025-03-08 09:48:00,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 266 transitions. [2025-03-08 09:48:00,095 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 266 transitions. Word has length 94 [2025-03-08 09:48:00,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:48:00,096 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 266 transitions. [2025-03-08 09:48:00,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:48:00,096 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 266 transitions. [2025-03-08 09:48:00,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-08 09:48:00,099 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:48:00,099 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:48:00,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 09:48:00,099 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:48:00,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:48:00,100 INFO L85 PathProgramCache]: Analyzing trace with hash -714233483, now seen corresponding path program 1 times [2025-03-08 09:48:00,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:48:00,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142907274] [2025-03-08 09:48:00,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:48:00,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:48:00,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-08 09:48:00,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-08 09:48:00,177 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:48:00,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:48:02,628 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 09:48:02,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:48:02,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142907274] [2025-03-08 09:48:02,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142907274] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:48:02,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:48:02,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 09:48:02,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567617424] [2025-03-08 09:48:02,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:48:02,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 09:48:02,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:48:02,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 09:48:02,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-03-08 09:48:02,630 INFO L87 Difference]: Start difference. First operand 176 states and 266 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:48:03,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:48:03,951 INFO L93 Difference]: Finished difference Result 446 states and 655 transitions. [2025-03-08 09:48:03,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-08 09:48:03,952 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 94 [2025-03-08 09:48:03,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:48:03,954 INFO L225 Difference]: With dead ends: 446 [2025-03-08 09:48:03,955 INFO L226 Difference]: Without dead ends: 320 [2025-03-08 09:48:03,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2025-03-08 09:48:03,956 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 331 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 09:48:03,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 432 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 09:48:03,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2025-03-08 09:48:03,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 190. [2025-03-08 09:48:03,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 145 states have (on average 1.393103448275862) internal successors, (202), 145 states have internal predecessors, (202), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2025-03-08 09:48:03,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 280 transitions. [2025-03-08 09:48:03,980 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 280 transitions. Word has length 94 [2025-03-08 09:48:03,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:48:03,980 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 280 transitions. [2025-03-08 09:48:03,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:48:03,981 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 280 transitions. [2025-03-08 09:48:03,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-08 09:48:03,983 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:48:03,983 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:48:03,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 09:48:03,983 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:48:03,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:48:03,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1028576852, now seen corresponding path program 1 times [2025-03-08 09:48:03,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:48:03,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261887488] [2025-03-08 09:48:03,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:48:03,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:48:03,994 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-08 09:48:04,028 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-08 09:48:04,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:48:04,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:48:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 09:48:05,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:48:05,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261887488] [2025-03-08 09:48:05,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261887488] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:48:05,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:48:05,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 09:48:05,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901235962] [2025-03-08 09:48:05,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:48:05,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 09:48:05,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:48:05,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 09:48:05,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-08 09:48:05,427 INFO L87 Difference]: Start difference. First operand 190 states and 280 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:48:06,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:48:06,204 INFO L93 Difference]: Finished difference Result 510 states and 746 transitions. [2025-03-08 09:48:06,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 09:48:06,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 94 [2025-03-08 09:48:06,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:48:06,206 INFO L225 Difference]: With dead ends: 510 [2025-03-08 09:48:06,206 INFO L226 Difference]: Without dead ends: 353 [2025-03-08 09:48:06,206 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2025-03-08 09:48:06,207 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 260 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 09:48:06,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 340 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 09:48:06,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2025-03-08 09:48:06,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 279. [2025-03-08 09:48:06,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 234 states have (on average 1.4230769230769231) internal successors, (333), 234 states have internal predecessors, (333), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2025-03-08 09:48:06,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 411 transitions. [2025-03-08 09:48:06,230 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 411 transitions. Word has length 94 [2025-03-08 09:48:06,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:48:06,231 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 411 transitions. [2025-03-08 09:48:06,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:48:06,231 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 411 transitions. [2025-03-08 09:48:06,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-08 09:48:06,231 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:48:06,232 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:48:06,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 09:48:06,232 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:48:06,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:48:06,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1904943190, now seen corresponding path program 1 times [2025-03-08 09:48:06,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:48:06,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453032642] [2025-03-08 09:48:06,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:48:06,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:48:06,239 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-08 09:48:06,265 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-08 09:48:06,265 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:48:06,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:48:06,392 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 09:48:06,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:48:06,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453032642] [2025-03-08 09:48:06,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453032642] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:48:06,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:48:06,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 09:48:06,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321579136] [2025-03-08 09:48:06,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:48:06,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 09:48:06,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:48:06,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 09:48:06,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 09:48:06,394 INFO L87 Difference]: Start difference. First operand 279 states and 411 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:48:06,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:48:06,544 INFO L93 Difference]: Finished difference Result 483 states and 706 transitions. [2025-03-08 09:48:06,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 09:48:06,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 94 [2025-03-08 09:48:06,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:48:06,546 INFO L225 Difference]: With dead ends: 483 [2025-03-08 09:48:06,546 INFO L226 Difference]: Without dead ends: 283 [2025-03-08 09:48:06,546 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 09:48:06,547 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 78 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 09:48:06,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 218 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 09:48:06,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2025-03-08 09:48:06,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 255. [2025-03-08 09:48:06,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 210 states have (on average 1.3761904761904762) internal successors, (289), 210 states have internal predecessors, (289), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2025-03-08 09:48:06,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 367 transitions. [2025-03-08 09:48:06,563 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 367 transitions. Word has length 94 [2025-03-08 09:48:06,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:48:06,563 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 367 transitions. [2025-03-08 09:48:06,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:48:06,563 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 367 transitions. [2025-03-08 09:48:06,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-08 09:48:06,564 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:48:06,564 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:48:06,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 09:48:06,564 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:48:06,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:48:06,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1729903590, now seen corresponding path program 1 times [2025-03-08 09:48:06,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:48:06,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172881147] [2025-03-08 09:48:06,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:48:06,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:48:06,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-08 09:48:06,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-08 09:48:06,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:48:06,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:48:07,346 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 09:48:07,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:48:07,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172881147] [2025-03-08 09:48:07,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172881147] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:48:07,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:48:07,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 09:48:07,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211392300] [2025-03-08 09:48:07,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:48:07,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 09:48:07,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:48:07,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 09:48:07,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2025-03-08 09:48:07,348 INFO L87 Difference]: Start difference. First operand 255 states and 367 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:48:07,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:48:07,818 INFO L93 Difference]: Finished difference Result 652 states and 938 transitions. [2025-03-08 09:48:07,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 09:48:07,818 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 95 [2025-03-08 09:48:07,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:48:07,820 INFO L225 Difference]: With dead ends: 652 [2025-03-08 09:48:07,820 INFO L226 Difference]: Without dead ends: 512 [2025-03-08 09:48:07,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-03-08 09:48:07,822 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 193 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 09:48:07,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 564 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 09:48:07,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2025-03-08 09:48:07,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 283. [2025-03-08 09:48:07,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 238 states have (on average 1.3949579831932772) internal successors, (332), 238 states have internal predecessors, (332), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2025-03-08 09:48:07,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 410 transitions. [2025-03-08 09:48:07,848 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 410 transitions. Word has length 95 [2025-03-08 09:48:07,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:48:07,849 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 410 transitions. [2025-03-08 09:48:07,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:48:07,849 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 410 transitions. [2025-03-08 09:48:07,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-08 09:48:07,850 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:48:07,850 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:48:07,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 09:48:07,851 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:48:07,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:48:07,851 INFO L85 PathProgramCache]: Analyzing trace with hash -222351781, now seen corresponding path program 1 times [2025-03-08 09:48:07,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:48:07,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182566601] [2025-03-08 09:48:07,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:48:07,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:48:07,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-08 09:48:07,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-08 09:48:07,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:48:07,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:48:29,808 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 09:48:29,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:48:29,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182566601] [2025-03-08 09:48:29,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182566601] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:48:29,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:48:29,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 09:48:29,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769398063] [2025-03-08 09:48:29,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:48:29,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 09:48:29,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:48:29,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 09:48:29,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-08 09:48:29,809 INFO L87 Difference]: Start difference. First operand 283 states and 410 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:48:30,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:48:30,373 INFO L93 Difference]: Finished difference Result 553 states and 800 transitions. [2025-03-08 09:48:30,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 09:48:30,374 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 95 [2025-03-08 09:48:30,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:48:30,376 INFO L225 Difference]: With dead ends: 553 [2025-03-08 09:48:30,376 INFO L226 Difference]: Without dead ends: 475 [2025-03-08 09:48:30,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-03-08 09:48:30,377 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 202 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 09:48:30,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 1055 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 09:48:30,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2025-03-08 09:48:30,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 370. [2025-03-08 09:48:30,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 310 states have (on average 1.4) internal successors, (434), 310 states have internal predecessors, (434), 52 states have call successors, (52), 7 states have call predecessors, (52), 7 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2025-03-08 09:48:30,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 538 transitions. [2025-03-08 09:48:30,402 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 538 transitions. Word has length 95 [2025-03-08 09:48:30,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:48:30,402 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 538 transitions. [2025-03-08 09:48:30,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:48:30,403 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 538 transitions. [2025-03-08 09:48:30,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-08 09:48:30,410 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:48:30,411 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:48:30,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 09:48:30,411 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:48:30,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:48:30,412 INFO L85 PathProgramCache]: Analyzing trace with hash 631055350, now seen corresponding path program 1 times [2025-03-08 09:48:30,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:48:30,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745797] [2025-03-08 09:48:30,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:48:30,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:48:30,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-08 09:48:30,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-08 09:48:30,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:48:30,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:48:34,051 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 09:48:34,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:48:34,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745797] [2025-03-08 09:48:34,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745797] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:48:34,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:48:34,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-08 09:48:34,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684947709] [2025-03-08 09:48:34,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:48:34,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 09:48:34,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:48:34,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 09:48:34,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2025-03-08 09:48:34,053 INFO L87 Difference]: Start difference. First operand 370 states and 538 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:48:35,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:48:35,375 INFO L93 Difference]: Finished difference Result 762 states and 1097 transitions. [2025-03-08 09:48:35,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 09:48:35,375 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 95 [2025-03-08 09:48:35,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:48:35,378 INFO L225 Difference]: With dead ends: 762 [2025-03-08 09:48:35,378 INFO L226 Difference]: Without dead ends: 535 [2025-03-08 09:48:35,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2025-03-08 09:48:35,380 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 438 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 09:48:35,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 554 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 09:48:35,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2025-03-08 09:48:35,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 368. [2025-03-08 09:48:35,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 308 states have (on average 1.396103896103896) internal successors, (430), 308 states have internal predecessors, (430), 52 states have call successors, (52), 7 states have call predecessors, (52), 7 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2025-03-08 09:48:35,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 534 transitions. [2025-03-08 09:48:35,411 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 534 transitions. Word has length 95 [2025-03-08 09:48:35,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:48:35,411 INFO L471 AbstractCegarLoop]: Abstraction has 368 states and 534 transitions. [2025-03-08 09:48:35,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:48:35,411 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 534 transitions. [2025-03-08 09:48:35,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-08 09:48:35,412 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:48:35,412 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:48:35,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 09:48:35,412 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:48:35,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:48:35,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1518559031, now seen corresponding path program 1 times [2025-03-08 09:48:35,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:48:35,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876044536] [2025-03-08 09:48:35,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:48:35,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:48:35,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-08 09:48:35,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-08 09:48:35,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:48:35,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:48:35,461 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 09:48:35,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:48:35,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876044536] [2025-03-08 09:48:35,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876044536] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:48:35,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:48:35,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 09:48:35,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993364107] [2025-03-08 09:48:35,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:48:35,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 09:48:35,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:48:35,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 09:48:35,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 09:48:35,463 INFO L87 Difference]: Start difference. First operand 368 states and 534 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:48:35,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:48:35,527 INFO L93 Difference]: Finished difference Result 887 states and 1302 transitions. [2025-03-08 09:48:35,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 09:48:35,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 95 [2025-03-08 09:48:35,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:48:35,530 INFO L225 Difference]: With dead ends: 887 [2025-03-08 09:48:35,530 INFO L226 Difference]: Without dead ends: 599 [2025-03-08 09:48:35,530 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 09:48:35,531 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 37 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 09:48:35,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 185 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 09:48:35,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2025-03-08 09:48:35,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 517. [2025-03-08 09:48:35,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 457 states have (on average 1.4201312910284465) internal successors, (649), 457 states have internal predecessors, (649), 52 states have call successors, (52), 7 states have call predecessors, (52), 7 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2025-03-08 09:48:35,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 753 transitions. [2025-03-08 09:48:35,558 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 753 transitions. Word has length 95 [2025-03-08 09:48:35,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:48:35,558 INFO L471 AbstractCegarLoop]: Abstraction has 517 states and 753 transitions. [2025-03-08 09:48:35,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:48:35,559 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 753 transitions. [2025-03-08 09:48:35,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-08 09:48:35,559 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:48:35,559 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:48:35,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 09:48:35,560 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:48:35,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:48:35,560 INFO L85 PathProgramCache]: Analyzing trace with hash 125496725, now seen corresponding path program 1 times [2025-03-08 09:48:35,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:48:35,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814840843] [2025-03-08 09:48:35,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:48:35,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:48:35,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-08 09:48:35,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-08 09:48:35,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:48:35,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:48:59,202 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 09:48:59,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:48:59,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814840843] [2025-03-08 09:48:59,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814840843] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:48:59,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:48:59,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-08 09:48:59,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688765605] [2025-03-08 09:48:59,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:48:59,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-08 09:48:59,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:48:59,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-08 09:48:59,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2025-03-08 09:48:59,204 INFO L87 Difference]: Start difference. First operand 517 states and 753 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:49:01,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:49:01,376 INFO L93 Difference]: Finished difference Result 866 states and 1258 transitions. [2025-03-08 09:49:01,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 09:49:01,377 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 95 [2025-03-08 09:49:01,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:49:01,379 INFO L225 Difference]: With dead ends: 866 [2025-03-08 09:49:01,379 INFO L226 Difference]: Without dead ends: 652 [2025-03-08 09:49:01,379 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2025-03-08 09:49:01,380 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 355 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-08 09:49:01,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 773 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-08 09:49:01,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2025-03-08 09:49:01,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 513. [2025-03-08 09:49:01,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 453 states have (on average 1.4194260485651213) internal successors, (643), 453 states have internal predecessors, (643), 52 states have call successors, (52), 7 states have call predecessors, (52), 7 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2025-03-08 09:49:01,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 747 transitions. [2025-03-08 09:49:01,402 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 747 transitions. Word has length 95 [2025-03-08 09:49:01,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:49:01,402 INFO L471 AbstractCegarLoop]: Abstraction has 513 states and 747 transitions. [2025-03-08 09:49:01,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:49:01,402 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 747 transitions. [2025-03-08 09:49:01,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-08 09:49:01,403 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:49:01,403 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:49:01,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 09:49:01,403 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:49:01,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:49:01,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1083222004, now seen corresponding path program 1 times [2025-03-08 09:49:01,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:49:01,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196722648] [2025-03-08 09:49:01,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:49:01,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:49:01,408 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-08 09:49:01,440 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-08 09:49:01,440 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:49:01,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:49:23,345 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 09:49:23,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:49:23,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196722648] [2025-03-08 09:49:23,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196722648] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:49:23,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:49:23,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-08 09:49:23,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307645542] [2025-03-08 09:49:23,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:49:23,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 09:49:23,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:49:23,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 09:49:23,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2025-03-08 09:49:23,346 INFO L87 Difference]: Start difference. First operand 513 states and 747 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:49:24,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:49:24,519 INFO L93 Difference]: Finished difference Result 1166 states and 1696 transitions. [2025-03-08 09:49:24,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 09:49:24,519 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 96 [2025-03-08 09:49:24,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:49:24,522 INFO L225 Difference]: With dead ends: 1166 [2025-03-08 09:49:24,522 INFO L226 Difference]: Without dead ends: 840 [2025-03-08 09:49:24,523 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2025-03-08 09:49:24,523 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 250 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-08 09:49:24,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 819 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-08 09:49:24,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2025-03-08 09:49:24,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 545. [2025-03-08 09:49:24,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 485 states have (on average 1.4247422680412372) internal successors, (691), 485 states have internal predecessors, (691), 52 states have call successors, (52), 7 states have call predecessors, (52), 7 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2025-03-08 09:49:24,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 795 transitions. [2025-03-08 09:49:24,546 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 795 transitions. Word has length 96 [2025-03-08 09:49:24,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:49:24,546 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 795 transitions. [2025-03-08 09:49:24,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 09:49:24,547 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 795 transitions. [2025-03-08 09:49:24,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-08 09:49:24,548 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:49:24,548 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:49:24,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 09:49:24,548 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:49:24,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:49:24,548 INFO L85 PathProgramCache]: Analyzing trace with hash 577663379, now seen corresponding path program 1 times [2025-03-08 09:49:24,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:49:24,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838344388] [2025-03-08 09:49:24,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:49:24,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:49:24,553 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-08 09:49:24,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-08 09:49:24,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:49:24,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat