./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-19.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-19.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 19e2e876a884367ff58d4d1ec0d3ef70a7d8dd103d1be66ce3d8fde890972c6b --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 02:14:42,717 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 02:14:42,751 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 02:14:42,755 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 02:14:42,755 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 02:14:42,769 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 02:14:42,769 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 02:14:42,769 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 02:14:42,769 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 02:14:42,769 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 02:14:42,769 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 02:14:42,769 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 02:14:42,770 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 02:14:42,770 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 02:14:42,770 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 02:14:42,770 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 02:14:42,770 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 02:14:42,770 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 02:14:42,770 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 02:14:42,770 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 02:14:42,770 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 02:14:42,770 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 02:14:42,770 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 02:14:42,770 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 02:14:42,770 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 02:14:42,770 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 02:14:42,770 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 02:14:42,770 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 02:14:42,770 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 02:14:42,771 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 02:14:42,771 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 02:14:42,771 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 02:14:42,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:14:42,771 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 02:14:42,771 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 02:14:42,771 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 02:14:42,771 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 02:14:42,771 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 02:14:42,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 02:14:42,771 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 02:14:42,771 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 02:14:42,771 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 02:14:42,771 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 02:14:42,771 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-jdk21/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 -> 19e2e876a884367ff58d4d1ec0d3ef70a7d8dd103d1be66ce3d8fde890972c6b [2025-02-06 02:14:42,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 02:14:43,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 02:14:43,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 02:14:43,014 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 02:14:43,014 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 02:14:43,015 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-19.i [2025-02-06 02:14:44,321 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c826556da/cd57d106162a4e3684ef37f589be4c28/FLAGdd53c1771 [2025-02-06 02:14:44,667 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 02:14:44,668 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-19.i [2025-02-06 02:14:44,678 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c826556da/cd57d106162a4e3684ef37f589be4c28/FLAGdd53c1771 [2025-02-06 02:14:44,883 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c826556da/cd57d106162a4e3684ef37f589be4c28 [2025-02-06 02:14:44,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 02:14:44,887 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 02:14:44,889 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 02:14:44,889 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 02:14:44,892 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 02:14:44,893 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:14:44" (1/1) ... [2025-02-06 02:14:44,895 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bc1643d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:44, skipping insertion in model container [2025-02-06 02:14:44,895 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:14:44" (1/1) ... [2025-02-06 02:14:44,913 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 02:14:45,009 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-19.i[916,929] [2025-02-06 02:14:45,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:14:45,138 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 02:14:45,147 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-19.i[916,929] [2025-02-06 02:14:45,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:14:45,212 INFO L204 MainTranslator]: Completed translation [2025-02-06 02:14:45,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:45 WrapperNode [2025-02-06 02:14:45,212 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 02:14:45,213 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 02:14:45,213 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 02:14:45,213 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 02:14:45,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:45" (1/1) ... [2025-02-06 02:14:45,240 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:45" (1/1) ... [2025-02-06 02:14:45,278 INFO L138 Inliner]: procedures = 26, calls = 58, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 374 [2025-02-06 02:14:45,278 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 02:14:45,278 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 02:14:45,279 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 02:14:45,279 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 02:14:45,284 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:45" (1/1) ... [2025-02-06 02:14:45,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:45" (1/1) ... [2025-02-06 02:14:45,301 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:45" (1/1) ... [2025-02-06 02:14:45,332 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]. [2025-02-06 02:14:45,332 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:45" (1/1) ... [2025-02-06 02:14:45,332 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:45" (1/1) ... [2025-02-06 02:14:45,345 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:45" (1/1) ... [2025-02-06 02:14:45,352 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:45" (1/1) ... [2025-02-06 02:14:45,354 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:45" (1/1) ... [2025-02-06 02:14:45,356 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:45" (1/1) ... [2025-02-06 02:14:45,361 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 02:14:45,361 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 02:14:45,361 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 02:14:45,361 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 02:14:45,362 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:45" (1/1) ... [2025-02-06 02:14:45,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:14:45,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:14:45,389 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 02:14:45,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 02:14:45,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 02:14:45,422 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 02:14:45,422 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 02:14:45,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 02:14:45,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 02:14:45,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 02:14:45,518 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 02:14:45,520 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 02:14:46,092 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L367: havoc property_#t~ite33#1;havoc property_#t~bitwise32#1;havoc property_#t~short34#1; [2025-02-06 02:14:46,154 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2025-02-06 02:14:46,155 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 02:14:46,173 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 02:14:46,175 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 02:14:46,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:14:46 BoogieIcfgContainer [2025-02-06 02:14:46,175 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 02:14:46,177 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 02:14:46,177 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 02:14:46,180 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 02:14:46,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 02:14:44" (1/3) ... [2025-02-06 02:14:46,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9bb71ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:14:46, skipping insertion in model container [2025-02-06 02:14:46,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:14:45" (2/3) ... [2025-02-06 02:14:46,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9bb71ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:14:46, skipping insertion in model container [2025-02-06 02:14:46,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:14:46" (3/3) ... [2025-02-06 02:14:46,183 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-19.i [2025-02-06 02:14:46,193 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 02:14:46,195 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-19.i that has 2 procedures, 155 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-06 02:14:46,244 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 02:14:46,254 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;@1df0df06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 02:14:46,254 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 02:14:46,256 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 107 states have (on average 1.514018691588785) internal successors, (162), 108 states have internal predecessors, (162), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2025-02-06 02:14:46,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2025-02-06 02:14:46,266 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:14:46,267 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:14:46,267 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:14:46,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:14:46,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1554179110, now seen corresponding path program 1 times [2025-02-06 02:14:46,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:14:46,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371226316] [2025-02-06 02:14:46,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:14:46,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:14:46,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 293 statements into 1 equivalence classes. [2025-02-06 02:14:46,411 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 293 of 293 statements. [2025-02-06 02:14:46,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:14:46,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:14:46,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2025-02-06 02:14:46,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:14:46,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371226316] [2025-02-06 02:14:46,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371226316] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:14:46,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707776051] [2025-02-06 02:14:46,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:14:46,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:14:46,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:14:46,720 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:14:46,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 02:14:46,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 293 statements into 1 equivalence classes. [2025-02-06 02:14:46,910 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 293 of 293 statements. [2025-02-06 02:14:46,910 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:14:46,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:14:46,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-06 02:14:46,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:14:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2025-02-06 02:14:46,948 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 02:14:46,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707776051] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:14:46,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:14:46,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-06 02:14:46,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229761620] [2025-02-06 02:14:46,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:14:46,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 02:14:46,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:14:46,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 02:14:46,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 02:14:46,971 INFO L87 Difference]: Start difference. First operand has 155 states, 107 states have (on average 1.514018691588785) internal successors, (162), 108 states have internal predecessors, (162), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) [2025-02-06 02:14:47,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:14:47,010 INFO L93 Difference]: Finished difference Result 303 states and 542 transitions. [2025-02-06 02:14:47,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 02:14:47,011 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) Word has length 293 [2025-02-06 02:14:47,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:14:47,016 INFO L225 Difference]: With dead ends: 303 [2025-02-06 02:14:47,016 INFO L226 Difference]: Without dead ends: 151 [2025-02-06 02:14:47,019 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 02:14:47,020 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:14:47,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 242 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 02:14:47,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2025-02-06 02:14:47,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2025-02-06 02:14:47,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 104 states have (on average 1.4807692307692308) internal successors, (154), 104 states have internal predecessors, (154), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2025-02-06 02:14:47,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 244 transitions. [2025-02-06 02:14:47,051 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 244 transitions. Word has length 293 [2025-02-06 02:14:47,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:14:47,051 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 244 transitions. [2025-02-06 02:14:47,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) [2025-02-06 02:14:47,052 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 244 transitions. [2025-02-06 02:14:47,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2025-02-06 02:14:47,055 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:14:47,055 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:14:47,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 02:14:47,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-06 02:14:47,256 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:14:47,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:14:47,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1657974608, now seen corresponding path program 1 times [2025-02-06 02:14:47,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:14:47,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231079394] [2025-02-06 02:14:47,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:14:47,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:14:47,281 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 293 statements into 1 equivalence classes. [2025-02-06 02:14:47,354 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 293 of 293 statements. [2025-02-06 02:14:47,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:14:47,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:14:47,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-02-06 02:14:47,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:14:47,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231079394] [2025-02-06 02:14:47,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231079394] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:14:47,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:14:47,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:14:47,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573688056] [2025-02-06 02:14:47,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:14:47,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:14:47,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:14:47,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:14:47,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:14:47,630 INFO L87 Difference]: Start difference. First operand 151 states and 244 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-02-06 02:14:47,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:14:47,739 INFO L93 Difference]: Finished difference Result 368 states and 594 transitions. [2025-02-06 02:14:47,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:14:47,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 293 [2025-02-06 02:14:47,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:14:47,743 INFO L225 Difference]: With dead ends: 368 [2025-02-06 02:14:47,744 INFO L226 Difference]: Without dead ends: 220 [2025-02-06 02:14:47,745 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 [2025-02-06 02:14:47,747 INFO L435 NwaCegarLoop]: 276 mSDtfsCounter, 102 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:14:47,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 499 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:14:47,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2025-02-06 02:14:47,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 217. [2025-02-06 02:14:47,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 155 states have (on average 1.4838709677419355) internal successors, (230), 156 states have internal predecessors, (230), 59 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2025-02-06 02:14:47,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 348 transitions. [2025-02-06 02:14:47,781 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 348 transitions. Word has length 293 [2025-02-06 02:14:47,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:14:47,783 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 348 transitions. [2025-02-06 02:14:47,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-02-06 02:14:47,784 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 348 transitions. [2025-02-06 02:14:47,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2025-02-06 02:14:47,787 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:14:47,787 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:14:47,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 02:14:47,788 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:14:47,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:14:47,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1302348261, now seen corresponding path program 1 times [2025-02-06 02:14:47,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:14:47,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212302382] [2025-02-06 02:14:47,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:14:47,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:14:47,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 294 statements into 1 equivalence classes. [2025-02-06 02:14:48,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 294 of 294 statements. [2025-02-06 02:14:48,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:14:48,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:14:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-02-06 02:14:49,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:14:49,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212302382] [2025-02-06 02:14:49,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212302382] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:14:49,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:14:49,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 02:14:49,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122534481] [2025-02-06 02:14:49,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:14:49,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 02:14:49,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:14:49,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 02:14:49,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 02:14:49,116 INFO L87 Difference]: Start difference. First operand 217 states and 348 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-02-06 02:14:49,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:14:49,567 INFO L93 Difference]: Finished difference Result 981 states and 1569 transitions. [2025-02-06 02:14:49,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 02:14:49,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 294 [2025-02-06 02:14:49,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:14:49,572 INFO L225 Difference]: With dead ends: 981 [2025-02-06 02:14:49,572 INFO L226 Difference]: Without dead ends: 767 [2025-02-06 02:14:49,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-06 02:14:49,574 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 735 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 02:14:49,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 751 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 02:14:49,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2025-02-06 02:14:49,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 367. [2025-02-06 02:14:49,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 283 states have (on average 1.519434628975265) internal successors, (430), 286 states have internal predecessors, (430), 79 states have call successors, (79), 4 states have call predecessors, (79), 4 states have return successors, (79), 76 states have call predecessors, (79), 79 states have call successors, (79) [2025-02-06 02:14:49,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 588 transitions. [2025-02-06 02:14:49,622 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 588 transitions. Word has length 294 [2025-02-06 02:14:49,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:14:49,623 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 588 transitions. [2025-02-06 02:14:49,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-02-06 02:14:49,623 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 588 transitions. [2025-02-06 02:14:49,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2025-02-06 02:14:49,625 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:14:49,626 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:14:49,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 02:14:49,626 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:14:49,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:14:49,626 INFO L85 PathProgramCache]: Analyzing trace with hash 509056453, now seen corresponding path program 1 times [2025-02-06 02:14:49,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:14:49,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538949286] [2025-02-06 02:14:49,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:14:49,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:14:49,649 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 294 statements into 1 equivalence classes. [2025-02-06 02:14:49,978 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 294 of 294 statements. [2025-02-06 02:14:49,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:14:49,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:14:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 81 proven. 51 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-02-06 02:14:50,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:14:50,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538949286] [2025-02-06 02:14:50,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538949286] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:14:50,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905086393] [2025-02-06 02:14:50,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:14:50,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:14:50,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:14:50,736 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:14:50,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 02:14:50,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 294 statements into 1 equivalence classes. [2025-02-06 02:14:50,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 294 of 294 statements. [2025-02-06 02:14:50,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:14:50,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:14:50,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 02:14:50,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:14:52,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1658 proven. 66 refuted. 0 times theorem prover too weak. 2236 trivial. 0 not checked. [2025-02-06 02:14:52,461 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:14:53,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 192 proven. 69 refuted. 0 times theorem prover too weak. 3699 trivial. 0 not checked. [2025-02-06 02:14:53,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905086393] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:14:53,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:14:53,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 14] total 33 [2025-02-06 02:14:53,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614910638] [2025-02-06 02:14:53,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:14:53,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-06 02:14:53,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:14:53,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-06 02:14:53,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=877, Unknown=0, NotChecked=0, Total=1056 [2025-02-06 02:14:53,801 INFO L87 Difference]: Start difference. First operand 367 states and 588 transitions. Second operand has 33 states, 31 states have (on average 6.806451612903226) internal successors, (211), 30 states have internal predecessors, (211), 10 states have call successors, (135), 4 states have call predecessors, (135), 8 states have return successors, (135), 10 states have call predecessors, (135), 10 states have call successors, (135) [2025-02-06 02:15:15,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:15,093 INFO L93 Difference]: Finished difference Result 11784 states and 18068 transitions. [2025-02-06 02:15:15,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 279 states. [2025-02-06 02:15:15,094 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 6.806451612903226) internal successors, (211), 30 states have internal predecessors, (211), 10 states have call successors, (135), 4 states have call predecessors, (135), 8 states have return successors, (135), 10 states have call predecessors, (135), 10 states have call successors, (135) Word has length 294 [2025-02-06 02:15:15,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:15,155 INFO L225 Difference]: With dead ends: 11784 [2025-02-06 02:15:15,156 INFO L226 Difference]: Without dead ends: 11420 [2025-02-06 02:15:15,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 618 SyntacticMatches, 0 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39397 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=13629, Invalid=72513, Unknown=0, NotChecked=0, Total=86142 [2025-02-06 02:15:15,170 INFO L435 NwaCegarLoop]: 459 mSDtfsCounter, 11866 mSDsluCounter, 6661 mSDsCounter, 0 mSdLazyCounter, 7562 mSolverCounterSat, 4737 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11997 SdHoareTripleChecker+Valid, 7120 SdHoareTripleChecker+Invalid, 12299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4737 IncrementalHoareTripleChecker+Valid, 7562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:15:15,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11997 Valid, 7120 Invalid, 12299 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4737 Valid, 7562 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2025-02-06 02:15:15,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11420 states. [2025-02-06 02:15:15,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11420 to 4736. [2025-02-06 02:15:15,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4736 states, 3671 states have (on average 1.4677199673113592) internal successors, (5388), 3735 states have internal predecessors, (5388), 973 states have call successors, (973), 91 states have call predecessors, (973), 91 states have return successors, (973), 909 states have call predecessors, (973), 973 states have call successors, (973) [2025-02-06 02:15:15,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4736 states to 4736 states and 7334 transitions. [2025-02-06 02:15:15,868 INFO L78 Accepts]: Start accepts. Automaton has 4736 states and 7334 transitions. Word has length 294 [2025-02-06 02:15:15,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:15,869 INFO L471 AbstractCegarLoop]: Abstraction has 4736 states and 7334 transitions. [2025-02-06 02:15:15,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 6.806451612903226) internal successors, (211), 30 states have internal predecessors, (211), 10 states have call successors, (135), 4 states have call predecessors, (135), 8 states have return successors, (135), 10 states have call predecessors, (135), 10 states have call successors, (135) [2025-02-06 02:15:15,870 INFO L276 IsEmpty]: Start isEmpty. Operand 4736 states and 7334 transitions. [2025-02-06 02:15:15,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2025-02-06 02:15:15,876 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:15,876 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:15:15,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 02:15:16,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:15:16,081 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:16,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:16,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1081879632, now seen corresponding path program 1 times [2025-02-06 02:15:16,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:16,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67673582] [2025-02-06 02:15:16,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:16,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:16,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 294 statements into 1 equivalence classes. [2025-02-06 02:15:16,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 294 of 294 statements. [2025-02-06 02:15:16,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:16,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:16,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-02-06 02:15:16,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:15:16,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67673582] [2025-02-06 02:15:16,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67673582] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:15:16,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:15:16,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:15:16,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918796067] [2025-02-06 02:15:16,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:15:16,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:15:16,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:15:16,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:15:16,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:15:16,211 INFO L87 Difference]: Start difference. First operand 4736 states and 7334 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-02-06 02:15:16,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:16,705 INFO L93 Difference]: Finished difference Result 10194 states and 15769 transitions. [2025-02-06 02:15:16,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:15:16,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 294 [2025-02-06 02:15:16,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:16,758 INFO L225 Difference]: With dead ends: 10194 [2025-02-06 02:15:16,758 INFO L226 Difference]: Without dead ends: 6560 [2025-02-06 02:15:16,777 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 [2025-02-06 02:15:16,777 INFO L435 NwaCegarLoop]: 263 mSDtfsCounter, 106 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:15:16,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 482 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:15:16,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6560 states. [2025-02-06 02:15:17,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6560 to 5286. [2025-02-06 02:15:17,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5286 states, 4220 states have (on average 1.4898104265402843) internal successors, (6287), 4284 states have internal predecessors, (6287), 973 states have call successors, (973), 92 states have call predecessors, (973), 92 states have return successors, (973), 909 states have call predecessors, (973), 973 states have call successors, (973) [2025-02-06 02:15:17,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 8233 transitions. [2025-02-06 02:15:17,447 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 8233 transitions. Word has length 294 [2025-02-06 02:15:17,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:17,447 INFO L471 AbstractCegarLoop]: Abstraction has 5286 states and 8233 transitions. [2025-02-06 02:15:17,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-02-06 02:15:17,448 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 8233 transitions. [2025-02-06 02:15:17,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2025-02-06 02:15:17,453 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:17,453 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:15:17,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 02:15:17,453 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:17,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:17,454 INFO L85 PathProgramCache]: Analyzing trace with hash -194375951, now seen corresponding path program 1 times [2025-02-06 02:15:17,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:17,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802099744] [2025-02-06 02:15:17,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:17,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:17,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 294 statements into 1 equivalence classes. [2025-02-06 02:15:17,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 294 of 294 statements. [2025-02-06 02:15:17,651 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:17,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 42 proven. 90 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-02-06 02:15:17,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:15:17,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802099744] [2025-02-06 02:15:17,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802099744] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:15:17,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757385158] [2025-02-06 02:15:17,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:17,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:15:17,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:15:17,872 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:15:17,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 02:15:17,957 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 294 statements into 1 equivalence classes. [2025-02-06 02:15:18,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 294 of 294 statements. [2025-02-06 02:15:18,021 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:18,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:18,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 02:15:18,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:15:18,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1752 proven. 90 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2025-02-06 02:15:18,499 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:15:18,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 42 proven. 90 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-02-06 02:15:18,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757385158] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:15:18,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:15:18,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-02-06 02:15:18,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376214642] [2025-02-06 02:15:18,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:15:18,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 02:15:18,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:15:18,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 02:15:18,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-02-06 02:15:18,768 INFO L87 Difference]: Start difference. First operand 5286 states and 8233 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2025-02-06 02:15:19,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:19,586 INFO L93 Difference]: Finished difference Result 9022 states and 13845 transitions. [2025-02-06 02:15:19,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 02:15:19,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) Word has length 294 [2025-02-06 02:15:19,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:19,608 INFO L225 Difference]: With dead ends: 9022 [2025-02-06 02:15:19,609 INFO L226 Difference]: Without dead ends: 4900 [2025-02-06 02:15:19,618 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 585 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2025-02-06 02:15:19,619 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 205 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 02:15:19,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 500 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 02:15:19,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4900 states. [2025-02-06 02:15:19,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4900 to 4678. [2025-02-06 02:15:19,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4678 states, 3599 states have (on average 1.4231731036399) internal successors, (5122), 3663 states have internal predecessors, (5122), 973 states have call successors, (973), 105 states have call predecessors, (973), 105 states have return successors, (973), 909 states have call predecessors, (973), 973 states have call successors, (973) [2025-02-06 02:15:20,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4678 states to 4678 states and 7068 transitions. [2025-02-06 02:15:20,008 INFO L78 Accepts]: Start accepts. Automaton has 4678 states and 7068 transitions. Word has length 294 [2025-02-06 02:15:20,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:20,008 INFO L471 AbstractCegarLoop]: Abstraction has 4678 states and 7068 transitions. [2025-02-06 02:15:20,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2025-02-06 02:15:20,008 INFO L276 IsEmpty]: Start isEmpty. Operand 4678 states and 7068 transitions. [2025-02-06 02:15:20,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2025-02-06 02:15:20,012 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:20,012 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:15:20,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 02:15:20,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:15:20,213 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:20,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:20,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1941134343, now seen corresponding path program 1 times [2025-02-06 02:15:20,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:20,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100261928] [2025-02-06 02:15:20,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:20,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:20,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 294 statements into 1 equivalence classes. [2025-02-06 02:15:20,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 294 of 294 statements. [2025-02-06 02:15:20,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:20,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 156 proven. 222 refuted. 0 times theorem prover too weak. 3582 trivial. 0 not checked. [2025-02-06 02:15:21,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:15:21,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100261928] [2025-02-06 02:15:21,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100261928] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:15:21,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176336641] [2025-02-06 02:15:21,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:21,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:15:21,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:15:21,402 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:15:21,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 02:15:21,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 294 statements into 1 equivalence classes. [2025-02-06 02:15:21,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 294 of 294 statements. [2025-02-06 02:15:21,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:21,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:21,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-02-06 02:15:21,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:15:24,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 2284 proven. 615 refuted. 0 times theorem prover too weak. 1061 trivial. 0 not checked. [2025-02-06 02:15:24,827 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:15:28,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 177 proven. 570 refuted. 0 times theorem prover too weak. 3213 trivial. 0 not checked. [2025-02-06 02:15:28,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176336641] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:15:28,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:15:28,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 26, 25] total 57 [2025-02-06 02:15:28,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752047185] [2025-02-06 02:15:28,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:15:28,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2025-02-06 02:15:28,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:15:28,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2025-02-06 02:15:28,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=736, Invalid=2456, Unknown=0, NotChecked=0, Total=3192 [2025-02-06 02:15:28,144 INFO L87 Difference]: Start difference. First operand 4678 states and 7068 transitions. Second operand has 57 states, 53 states have (on average 4.113207547169812) internal successors, (218), 51 states have internal predecessors, (218), 19 states have call successors, (135), 9 states have call predecessors, (135), 19 states have return successors, (135), 19 states have call predecessors, (135), 19 states have call successors, (135) [2025-02-06 02:15:46,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-06 02:15:48,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []