./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-38.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-38.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 c1b0a215876f37039c6c55ed6970931c1670c48c809fddaaf54aa4f3ef26ee12 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 02:16:35,075 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 02:16:35,147 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 02:16:35,154 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 02:16:35,154 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 02:16:35,176 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 02:16:35,178 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 02:16:35,178 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 02:16:35,179 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 02:16:35,179 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 02:16:35,180 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 02:16:35,180 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 02:16:35,180 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 02:16:35,180 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 02:16:35,180 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 02:16:35,180 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 02:16:35,181 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 02:16:35,181 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 02:16:35,181 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 02:16:35,181 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 02:16:35,181 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 02:16:35,181 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 02:16:35,181 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 02:16:35,181 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 02:16:35,181 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 02:16:35,182 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 02:16:35,182 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 02:16:35,182 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 02:16:35,182 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 02:16:35,182 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 02:16:35,182 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 02:16:35,182 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 02:16:35,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:16:35,183 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 02:16:35,183 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 02:16:35,183 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 02:16:35,183 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 02:16:35,183 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 02:16:35,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 02:16:35,183 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 02:16:35,184 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 02:16:35,184 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 02:16:35,184 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 02:16:35,184 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 -> c1b0a215876f37039c6c55ed6970931c1670c48c809fddaaf54aa4f3ef26ee12 [2025-02-06 02:16:35,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 02:16:35,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 02:16:35,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 02:16:35,466 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 02:16:35,466 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 02:16:35,467 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-38.i [2025-02-06 02:16:36,731 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3d2dd6325/8e122bbdd3a64e7cb7797cdf261aa455/FLAGefebd429c [2025-02-06 02:16:37,051 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 02:16:37,052 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-38.i [2025-02-06 02:16:37,059 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3d2dd6325/8e122bbdd3a64e7cb7797cdf261aa455/FLAGefebd429c [2025-02-06 02:16:37,304 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3d2dd6325/8e122bbdd3a64e7cb7797cdf261aa455 [2025-02-06 02:16:37,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 02:16:37,307 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 02:16:37,308 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 02:16:37,309 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 02:16:37,312 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 02:16:37,312 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:16:37" (1/1) ... [2025-02-06 02:16:37,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67682a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:37, skipping insertion in model container [2025-02-06 02:16:37,313 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:16:37" (1/1) ... [2025-02-06 02:16:37,331 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 02:16:37,412 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-38.i[916,929] [2025-02-06 02:16:37,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:16:37,513 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 02:16:37,521 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-38.i[916,929] [2025-02-06 02:16:37,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:16:37,593 INFO L204 MainTranslator]: Completed translation [2025-02-06 02:16:37,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:37 WrapperNode [2025-02-06 02:16:37,594 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 02:16:37,595 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 02:16:37,595 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 02:16:37,595 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 02:16:37,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:37" (1/1) ... [2025-02-06 02:16:37,616 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:37" (1/1) ... [2025-02-06 02:16:37,673 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 328 [2025-02-06 02:16:37,674 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 02:16:37,674 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 02:16:37,674 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 02:16:37,674 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 02:16:37,682 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:37" (1/1) ... [2025-02-06 02:16:37,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:37" (1/1) ... [2025-02-06 02:16:37,694 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:37" (1/1) ... [2025-02-06 02:16:37,732 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 02:16:37,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:37" (1/1) ... [2025-02-06 02:16:37,733 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:37" (1/1) ... [2025-02-06 02:16:37,752 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:37" (1/1) ... [2025-02-06 02:16:37,755 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:37" (1/1) ... [2025-02-06 02:16:37,760 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:37" (1/1) ... [2025-02-06 02:16:37,762 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:37" (1/1) ... [2025-02-06 02:16:37,770 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 02:16:37,771 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 02:16:37,771 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 02:16:37,771 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 02:16:37,773 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:37" (1/1) ... [2025-02-06 02:16:37,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:16:37,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:16:37,808 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 02:16:37,811 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 02:16:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 02:16:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 02:16:37,840 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 02:16:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 02:16:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 02:16:37,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 02:16:37,933 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 02:16:37,935 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 02:16:38,472 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L332: havoc property_#t~bitwise26#1;havoc property_#t~short27#1; [2025-02-06 02:16:38,503 INFO L? ?]: Removed 36 outVars from TransFormulas that were not future-live. [2025-02-06 02:16:38,503 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 02:16:38,513 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 02:16:38,513 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 02:16:38,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:16:38 BoogieIcfgContainer [2025-02-06 02:16:38,514 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 02:16:38,515 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 02:16:38,515 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 02:16:38,518 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 02:16:38,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 02:16:37" (1/3) ... [2025-02-06 02:16:38,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31635d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:16:38, skipping insertion in model container [2025-02-06 02:16:38,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:37" (2/3) ... [2025-02-06 02:16:38,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31635d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:16:38, skipping insertion in model container [2025-02-06 02:16:38,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:16:38" (3/3) ... [2025-02-06 02:16:38,520 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-38.i [2025-02-06 02:16:38,529 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 02:16:38,530 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-38.i that has 2 procedures, 138 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-06 02:16:38,575 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 02:16:38,585 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;@5e4ed3ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 02:16:38,586 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 02:16:38,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 97 states have (on average 1.5154639175257731) internal successors, (147), 98 states have internal predecessors, (147), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-02-06 02:16:38,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2025-02-06 02:16:38,600 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:38,601 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:38,601 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:38,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:38,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1236566648, now seen corresponding path program 1 times [2025-02-06 02:16:38,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:38,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409430653] [2025-02-06 02:16:38,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:38,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:38,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 255 statements into 1 equivalence classes. [2025-02-06 02:16:38,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 255 of 255 statements. [2025-02-06 02:16:38,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:38,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:39,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2025-02-06 02:16:39,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:39,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409430653] [2025-02-06 02:16:39,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409430653] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:16:39,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547414437] [2025-02-06 02:16:39,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:39,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:16:39,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:16:39,035 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 02:16:39,042 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 02:16:39,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 255 statements into 1 equivalence classes. [2025-02-06 02:16:39,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 255 of 255 statements. [2025-02-06 02:16:39,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:39,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:39,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-06 02:16:39,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:16:39,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2025-02-06 02:16:39,316 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 02:16:39,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547414437] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:16:39,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:16:39,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-06 02:16:39,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672413669] [2025-02-06 02:16:39,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:16:39,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 02:16:39,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:39,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 02:16:39,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 02:16:39,335 INFO L87 Difference]: Start difference. First operand has 138 states, 97 states have (on average 1.5154639175257731) internal successors, (147), 98 states have internal predecessors, (147), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2025-02-06 02:16:39,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:39,364 INFO L93 Difference]: Finished difference Result 270 states and 479 transitions. [2025-02-06 02:16:39,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 02:16:39,369 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) Word has length 255 [2025-02-06 02:16:39,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:39,377 INFO L225 Difference]: With dead ends: 270 [2025-02-06 02:16:39,377 INFO L226 Difference]: Without dead ends: 135 [2025-02-06 02:16:39,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 256 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 02:16:39,383 INFO L435 NwaCegarLoop]: 215 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, 215 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 02:16:39,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 215 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 02:16:39,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2025-02-06 02:16:39,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2025-02-06 02:16:39,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 95 states have (on average 1.4842105263157894) internal successors, (141), 95 states have internal predecessors, (141), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-02-06 02:16:39,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 217 transitions. [2025-02-06 02:16:39,427 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 217 transitions. Word has length 255 [2025-02-06 02:16:39,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:39,428 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 217 transitions. [2025-02-06 02:16:39,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2025-02-06 02:16:39,428 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 217 transitions. [2025-02-06 02:16:39,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2025-02-06 02:16:39,434 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:39,435 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:39,448 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 02:16:39,636 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 02:16:39,637 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:39,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:39,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1299584390, now seen corresponding path program 1 times [2025-02-06 02:16:39,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:39,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28717050] [2025-02-06 02:16:39,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:39,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:39,669 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 255 statements into 1 equivalence classes. [2025-02-06 02:16:39,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 255 of 255 statements. [2025-02-06 02:16:39,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:39,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:40,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2025-02-06 02:16:40,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:40,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28717050] [2025-02-06 02:16:40,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28717050] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:16:40,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:16:40,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:16:40,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234371461] [2025-02-06 02:16:40,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:16:40,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:16:40,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:40,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:16:40,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:16:40,111 INFO L87 Difference]: Start difference. First operand 135 states and 217 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2025-02-06 02:16:40,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:40,300 INFO L93 Difference]: Finished difference Result 394 states and 635 transitions. [2025-02-06 02:16:40,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:16:40,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 255 [2025-02-06 02:16:40,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:40,305 INFO L225 Difference]: With dead ends: 394 [2025-02-06 02:16:40,309 INFO L226 Difference]: Without dead ends: 262 [2025-02-06 02:16:40,312 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 02:16:40,317 INFO L435 NwaCegarLoop]: 321 mSDtfsCounter, 188 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:40,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 517 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:16:40,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2025-02-06 02:16:40,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 169. [2025-02-06 02:16:40,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 129 states have (on average 1.496124031007752) internal successors, (193), 129 states have internal predecessors, (193), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-02-06 02:16:40,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 269 transitions. [2025-02-06 02:16:40,359 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 269 transitions. Word has length 255 [2025-02-06 02:16:40,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:40,366 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 269 transitions. [2025-02-06 02:16:40,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2025-02-06 02:16:40,366 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 269 transitions. [2025-02-06 02:16:40,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2025-02-06 02:16:40,375 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:40,376 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:40,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 02:16:40,376 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:40,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:40,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1552455095, now seen corresponding path program 1 times [2025-02-06 02:16:40,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:40,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407660311] [2025-02-06 02:16:40,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:40,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:40,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 256 statements into 1 equivalence classes. [2025-02-06 02:16:40,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 256 of 256 statements. [2025-02-06 02:16:40,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:40,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:41,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2025-02-06 02:16:41,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:41,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407660311] [2025-02-06 02:16:41,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407660311] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:16:41,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:16:41,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:16:41,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799508393] [2025-02-06 02:16:41,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:16:41,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:16:41,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:41,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:16:41,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:16:41,072 INFO L87 Difference]: Start difference. First operand 169 states and 269 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2025-02-06 02:16:41,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:41,112 INFO L93 Difference]: Finished difference Result 330 states and 525 transitions. [2025-02-06 02:16:41,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:16:41,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 256 [2025-02-06 02:16:41,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:41,117 INFO L225 Difference]: With dead ends: 330 [2025-02-06 02:16:41,118 INFO L226 Difference]: Without dead ends: 164 [2025-02-06 02:16:41,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 02:16:41,120 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 200 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:41,121 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 198 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 02:16:41,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2025-02-06 02:16:41,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2025-02-06 02:16:41,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 124 states have (on average 1.4274193548387097) internal successors, (177), 124 states have internal predecessors, (177), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-02-06 02:16:41,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 253 transitions. [2025-02-06 02:16:41,159 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 253 transitions. Word has length 256 [2025-02-06 02:16:41,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:41,160 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 253 transitions. [2025-02-06 02:16:41,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2025-02-06 02:16:41,161 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 253 transitions. [2025-02-06 02:16:41,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2025-02-06 02:16:41,163 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:41,163 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:41,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 02:16:41,163 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:41,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:41,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1143630870, now seen corresponding path program 1 times [2025-02-06 02:16:41,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:41,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366263192] [2025-02-06 02:16:41,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:41,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:41,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 256 statements into 1 equivalence classes. [2025-02-06 02:16:41,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 256 of 256 statements. [2025-02-06 02:16:41,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:41,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:42,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2025-02-06 02:16:42,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:42,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366263192] [2025-02-06 02:16:42,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366263192] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:16:42,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:16:42,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 02:16:42,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840352927] [2025-02-06 02:16:42,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:16:42,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 02:16:42,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:42,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 02:16:42,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 02:16:42,747 INFO L87 Difference]: Start difference. First operand 164 states and 253 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2025-02-06 02:16:43,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:43,206 INFO L93 Difference]: Finished difference Result 487 states and 754 transitions. [2025-02-06 02:16:43,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 02:16:43,206 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 256 [2025-02-06 02:16:43,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:43,210 INFO L225 Difference]: With dead ends: 487 [2025-02-06 02:16:43,210 INFO L226 Difference]: Without dead ends: 326 [2025-02-06 02:16:43,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-02-06 02:16:43,211 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 245 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:43,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 666 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 02:16:43,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2025-02-06 02:16:43,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 230. [2025-02-06 02:16:43,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 151 states have (on average 1.3509933774834437) internal successors, (204), 151 states have internal predecessors, (204), 76 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2025-02-06 02:16:43,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 356 transitions. [2025-02-06 02:16:43,255 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 356 transitions. Word has length 256 [2025-02-06 02:16:43,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:43,256 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 356 transitions. [2025-02-06 02:16:43,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2025-02-06 02:16:43,256 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 356 transitions. [2025-02-06 02:16:43,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2025-02-06 02:16:43,258 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:43,258 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:43,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 02:16:43,259 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:43,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:43,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1173462563, now seen corresponding path program 1 times [2025-02-06 02:16:43,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:43,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236927074] [2025-02-06 02:16:43,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:43,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:43,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 257 statements into 1 equivalence classes. [2025-02-06 02:16:43,800 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 257 of 257 statements. [2025-02-06 02:16:43,800 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:43,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:44,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 33 proven. 78 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2025-02-06 02:16:44,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:44,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236927074] [2025-02-06 02:16:44,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236927074] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:16:44,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732805649] [2025-02-06 02:16:44,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:44,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:16:44,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:16:44,366 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 02:16:44,371 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 02:16:44,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 257 statements into 1 equivalence classes. [2025-02-06 02:16:44,530 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 257 of 257 statements. [2025-02-06 02:16:44,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:44,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:44,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-06 02:16:44,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:16:44,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2025-02-06 02:16:44,629 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 02:16:44,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732805649] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:16:44,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:16:44,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-02-06 02:16:44,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446450581] [2025-02-06 02:16:44,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:16:44,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:16:44,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:44,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:16:44,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 02:16:44,631 INFO L87 Difference]: Start difference. First operand 230 states and 356 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2025-02-06 02:16:44,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:44,741 INFO L93 Difference]: Finished difference Result 530 states and 822 transitions. [2025-02-06 02:16:44,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:16:44,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 257 [2025-02-06 02:16:44,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:44,746 INFO L225 Difference]: With dead ends: 530 [2025-02-06 02:16:44,746 INFO L226 Difference]: Without dead ends: 369 [2025-02-06 02:16:44,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 02:16:44,748 INFO L435 NwaCegarLoop]: 301 mSDtfsCounter, 169 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:44,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 478 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:16:44,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2025-02-06 02:16:44,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 293. [2025-02-06 02:16:44,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 214 states have (on average 1.4065420560747663) internal successors, (301), 214 states have internal predecessors, (301), 76 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2025-02-06 02:16:44,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 453 transitions. [2025-02-06 02:16:44,803 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 453 transitions. Word has length 257 [2025-02-06 02:16:44,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:44,803 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 453 transitions. [2025-02-06 02:16:44,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2025-02-06 02:16:44,804 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 453 transitions. [2025-02-06 02:16:44,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2025-02-06 02:16:44,808 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:44,809 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:44,824 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 02:16:45,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:16:45,010 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:45,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:45,010 INFO L85 PathProgramCache]: Analyzing trace with hash -71301918, now seen corresponding path program 1 times [2025-02-06 02:16:45,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:45,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012136086] [2025-02-06 02:16:45,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:45,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:45,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 257 statements into 1 equivalence classes. [2025-02-06 02:16:45,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 257 of 257 statements. [2025-02-06 02:16:45,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:45,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:46,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 33 proven. 78 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2025-02-06 02:16:46,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:46,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012136086] [2025-02-06 02:16:46,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012136086] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:16:46,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100785241] [2025-02-06 02:16:46,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:46,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:16:46,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:16:46,095 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 02:16:46,097 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 02:16:46,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 257 statements into 1 equivalence classes. [2025-02-06 02:16:46,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 257 of 257 statements. [2025-02-06 02:16:46,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:46,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:46,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 02:16:46,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:16:46,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 937 proven. 21 refuted. 0 times theorem prover too weak. 1854 trivial. 0 not checked. [2025-02-06 02:16:46,364 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:16:46,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 90 proven. 21 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2025-02-06 02:16:46,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100785241] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:16:46,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:16:46,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2025-02-06 02:16:46,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862295867] [2025-02-06 02:16:46,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:16:46,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 02:16:46,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:46,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 02:16:46,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-06 02:16:46,580 INFO L87 Difference]: Start difference. First operand 293 states and 453 transitions. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 3 states have call successors, (71), 2 states have call predecessors, (71), 4 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2025-02-06 02:16:47,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:47,174 INFO L93 Difference]: Finished difference Result 535 states and 813 transitions. [2025-02-06 02:16:47,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 02:16:47,174 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 3 states have call successors, (71), 2 states have call predecessors, (71), 4 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) Word has length 257 [2025-02-06 02:16:47,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:47,177 INFO L225 Difference]: With dead ends: 535 [2025-02-06 02:16:47,177 INFO L226 Difference]: Without dead ends: 311 [2025-02-06 02:16:47,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 514 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2025-02-06 02:16:47,178 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 346 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:47,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 541 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 02:16:47,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2025-02-06 02:16:47,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2025-02-06 02:16:47,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 227 states have (on average 1.3612334801762114) internal successors, (309), 227 states have internal predecessors, (309), 76 states have call successors, (76), 7 states have call predecessors, (76), 7 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2025-02-06 02:16:47,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 461 transitions. [2025-02-06 02:16:47,206 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 461 transitions. Word has length 257 [2025-02-06 02:16:47,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:47,206 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 461 transitions. [2025-02-06 02:16:47,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 3 states have call successors, (71), 2 states have call predecessors, (71), 4 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2025-02-06 02:16:47,206 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 461 transitions. [2025-02-06 02:16:47,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2025-02-06 02:16:47,208 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:47,208 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:47,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 02:16:47,408 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 02:16:47,409 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:47,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:47,410 INFO L85 PathProgramCache]: Analyzing trace with hash 247147716, now seen corresponding path program 1 times [2025-02-06 02:16:47,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:47,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829703925] [2025-02-06 02:16:47,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:47,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:47,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 257 statements into 1 equivalence classes. [2025-02-06 02:16:47,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 257 of 257 statements. [2025-02-06 02:16:47,503 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:47,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2025-02-06 02:16:48,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:48,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829703925] [2025-02-06 02:16:48,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829703925] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:16:48,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:16:48,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 02:16:48,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555533373] [2025-02-06 02:16:48,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:16:48,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 02:16:48,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:48,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 02:16:48,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-06 02:16:48,165 INFO L87 Difference]: Start difference. First operand 311 states and 461 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2025-02-06 02:16:48,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:48,632 INFO L93 Difference]: Finished difference Result 824 states and 1220 transitions. [2025-02-06 02:16:48,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 02:16:48,633 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 257 [2025-02-06 02:16:48,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:48,636 INFO L225 Difference]: With dead ends: 824 [2025-02-06 02:16:48,636 INFO L226 Difference]: Without dead ends: 582 [2025-02-06 02:16:48,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-02-06 02:16:48,640 INFO L435 NwaCegarLoop]: 321 mSDtfsCounter, 552 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:48,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 647 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 02:16:48,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2025-02-06 02:16:48,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 426. [2025-02-06 02:16:48,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 341 states have (on average 1.4105571847507332) internal successors, (481), 341 states have internal predecessors, (481), 76 states have call successors, (76), 8 states have call predecessors, (76), 8 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2025-02-06 02:16:48,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 633 transitions. [2025-02-06 02:16:48,693 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 633 transitions. Word has length 257 [2025-02-06 02:16:48,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:48,695 INFO L471 AbstractCegarLoop]: Abstraction has 426 states and 633 transitions. [2025-02-06 02:16:48,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2025-02-06 02:16:48,696 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 633 transitions. [2025-02-06 02:16:48,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2025-02-06 02:16:48,698 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:48,701 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:48,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 02:16:48,702 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:48,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:48,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1884028767, now seen corresponding path program 1 times [2025-02-06 02:16:48,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:48,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106285891] [2025-02-06 02:16:48,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:48,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:48,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 257 statements into 1 equivalence classes. [2025-02-06 02:16:48,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 257 of 257 statements. [2025-02-06 02:16:48,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:48,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:48,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2025-02-06 02:16:48,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:48,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106285891] [2025-02-06 02:16:48,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106285891] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:16:48,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:16:48,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:16:48,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029486124] [2025-02-06 02:16:48,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:16:48,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:16:48,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:48,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:16:48,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:16:48,806 INFO L87 Difference]: Start difference. First operand 426 states and 633 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2025-02-06 02:16:48,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:48,892 INFO L93 Difference]: Finished difference Result 836 states and 1245 transitions. [2025-02-06 02:16:48,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:16:48,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 257 [2025-02-06 02:16:48,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:48,896 INFO L225 Difference]: With dead ends: 836 [2025-02-06 02:16:48,897 INFO L226 Difference]: Without dead ends: 491 [2025-02-06 02:16:48,897 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 02:16:48,898 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 168 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:48,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 416 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 02:16:48,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2025-02-06 02:16:48,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 317. [2025-02-06 02:16:48,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 232 states have (on average 1.3189655172413792) internal successors, (306), 232 states have internal predecessors, (306), 76 states have call successors, (76), 8 states have call predecessors, (76), 8 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2025-02-06 02:16:48,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 458 transitions. [2025-02-06 02:16:48,948 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 458 transitions. Word has length 257 [2025-02-06 02:16:48,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:48,948 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 458 transitions. [2025-02-06 02:16:48,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2025-02-06 02:16:48,949 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 458 transitions. [2025-02-06 02:16:48,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2025-02-06 02:16:48,952 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:48,952 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:48,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 02:16:48,952 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:48,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:48,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1385656283, now seen corresponding path program 1 times [2025-02-06 02:16:48,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:48,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258896458] [2025-02-06 02:16:48,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:48,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:48,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 257 statements into 1 equivalence classes. [2025-02-06 02:16:49,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 257 of 257 statements. [2025-02-06 02:16:49,324 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:49,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 02:16:49,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [620121258] [2025-02-06 02:16:49,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:49,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:16:49,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:16:49,332 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 02:16:49,333 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 02:16:49,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 257 statements into 1 equivalence classes. [2025-02-06 02:16:49,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 257 of 257 statements. [2025-02-06 02:16:49,529 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:49,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:49,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-06 02:16:49,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:16:50,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 758 proven. 123 refuted. 0 times theorem prover too weak. 1931 trivial. 0 not checked. [2025-02-06 02:16:50,957 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:16:51,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:51,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258896458] [2025-02-06 02:16:51,300 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 02:16:51,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620121258] [2025-02-06 02:16:51,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620121258] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:16:51,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:16:51,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2025-02-06 02:16:51,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758973971] [2025-02-06 02:16:51,300 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-06 02:16:51,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 02:16:51,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:51,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 02:16:51,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2025-02-06 02:16:51,302 INFO L87 Difference]: Start difference. First operand 317 states and 458 transitions. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 3 states have call successors, (38), 3 states have call predecessors, (38), 4 states have return successors, (38), 2 states have call predecessors, (38), 3 states have call successors, (38) [2025-02-06 02:16:51,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:51,918 INFO L93 Difference]: Finished difference Result 835 states and 1199 transitions. [2025-02-06 02:16:51,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-06 02:16:51,919 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 3 states have call successors, (38), 3 states have call predecessors, (38), 4 states have return successors, (38), 2 states have call predecessors, (38), 3 states have call successors, (38) Word has length 257 [2025-02-06 02:16:51,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:51,922 INFO L225 Difference]: With dead ends: 835 [2025-02-06 02:16:51,922 INFO L226 Difference]: Without dead ends: 599 [2025-02-06 02:16:51,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=208, Invalid=722, Unknown=0, NotChecked=0, Total=930 [2025-02-06 02:16:51,927 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 240 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:51,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 1359 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 02:16:51,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2025-02-06 02:16:51,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 459. [2025-02-06 02:16:51,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 372 states have (on average 1.3521505376344085) internal successors, (503), 372 states have internal predecessors, (503), 76 states have call successors, (76), 10 states have call predecessors, (76), 10 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2025-02-06 02:16:51,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 655 transitions. [2025-02-06 02:16:51,966 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 655 transitions. Word has length 257 [2025-02-06 02:16:51,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:51,967 INFO L471 AbstractCegarLoop]: Abstraction has 459 states and 655 transitions. [2025-02-06 02:16:51,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 3 states have call successors, (38), 3 states have call predecessors, (38), 4 states have return successors, (38), 2 states have call predecessors, (38), 3 states have call successors, (38) [2025-02-06 02:16:51,967 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 655 transitions. [2025-02-06 02:16:51,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2025-02-06 02:16:51,969 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:51,970 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:51,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 02:16:52,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-02-06 02:16:52,174 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:52,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:52,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1098320522, now seen corresponding path program 1 times [2025-02-06 02:16:52,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:52,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512490787] [2025-02-06 02:16:52,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:52,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:52,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 258 statements into 1 equivalence classes. [2025-02-06 02:16:52,350 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 258 of 258 statements. [2025-02-06 02:16:52,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:52,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:52,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2025-02-06 02:16:52,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:52,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512490787] [2025-02-06 02:16:52,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512490787] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:16:52,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:16:52,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:16:52,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629372777] [2025-02-06 02:16:52,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:16:52,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:16:52,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:52,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:16:52,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:16:52,551 INFO L87 Difference]: Start difference. First operand 459 states and 655 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, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2025-02-06 02:16:52,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:52,628 INFO L93 Difference]: Finished difference Result 723 states and 1042 transitions. [2025-02-06 02:16:52,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:16:52,628 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, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 258 [2025-02-06 02:16:52,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:52,631 INFO L225 Difference]: With dead ends: 723 [2025-02-06 02:16:52,631 INFO L226 Difference]: Without dead ends: 479 [2025-02-06 02:16:52,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 02:16:52,633 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 16 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:52,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 377 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:16:52,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2025-02-06 02:16:52,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 459. [2025-02-06 02:16:52,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 372 states have (on average 1.3306451612903225) internal successors, (495), 372 states have internal predecessors, (495), 76 states have call successors, (76), 10 states have call predecessors, (76), 10 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2025-02-06 02:16:52,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 647 transitions. [2025-02-06 02:16:52,668 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 647 transitions. Word has length 258 [2025-02-06 02:16:52,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:52,669 INFO L471 AbstractCegarLoop]: Abstraction has 459 states and 647 transitions. [2025-02-06 02:16:52,669 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, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2025-02-06 02:16:52,669 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 647 transitions. [2025-02-06 02:16:52,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2025-02-06 02:16:52,671 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:52,671 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:52,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 02:16:52,671 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:52,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:52,672 INFO L85 PathProgramCache]: Analyzing trace with hash -746595772, now seen corresponding path program 1 times [2025-02-06 02:16:52,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:52,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584393753] [2025-02-06 02:16:52,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:52,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:52,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 259 statements into 1 equivalence classes. [2025-02-06 02:16:52,943 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 259 of 259 statements. [2025-02-06 02:16:52,943 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:52,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 02:16:52,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [585470202] [2025-02-06 02:16:52,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:52,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:16:52,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:16:52,947 INFO L229 MonitoredProcess]: Starting monitored process 6 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 02:16:52,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 02:16:53,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 259 statements into 1 equivalence classes. [2025-02-06 02:16:53,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 259 of 259 statements. [2025-02-06 02:16:53,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:53,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:53,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-06 02:16:53,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:16:54,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 37 proven. 111 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2025-02-06 02:16:54,517 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:16:59,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:59,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584393753] [2025-02-06 02:16:59,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 02:16:59,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585470202] [2025-02-06 02:16:59,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585470202] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:16:59,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:16:59,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2025-02-06 02:16:59,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337731014] [2025-02-06 02:16:59,909 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-06 02:16:59,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 02:16:59,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:59,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 02:16:59,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2025-02-06 02:16:59,912 INFO L87 Difference]: Start difference. First operand 459 states and 647 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2025-02-06 02:17:02,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:17:02,363 INFO L93 Difference]: Finished difference Result 1129 states and 1572 transitions. [2025-02-06 02:17:02,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-06 02:17:02,364 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) Word has length 259 [2025-02-06 02:17:02,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:17:02,369 INFO L225 Difference]: With dead ends: 1129 [2025-02-06 02:17:02,369 INFO L226 Difference]: Without dead ends: 879 [2025-02-06 02:17:02,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=525, Invalid=1637, Unknown=0, NotChecked=0, Total=2162 [2025-02-06 02:17:02,371 INFO L435 NwaCegarLoop]: 279 mSDtfsCounter, 1020 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 2216 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 2209 SdHoareTripleChecker+Invalid, 2299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-06 02:17:02,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 2209 Invalid, 2299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2216 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-06 02:17:02,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2025-02-06 02:17:02,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 482. [2025-02-06 02:17:02,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 395 states have (on average 1.3316455696202532) internal successors, (526), 395 states have internal predecessors, (526), 76 states have call successors, (76), 10 states have call predecessors, (76), 10 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2025-02-06 02:17:02,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 678 transitions. [2025-02-06 02:17:02,410 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 678 transitions. Word has length 259 [2025-02-06 02:17:02,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:17:02,410 INFO L471 AbstractCegarLoop]: Abstraction has 482 states and 678 transitions. [2025-02-06 02:17:02,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2025-02-06 02:17:02,410 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 678 transitions. [2025-02-06 02:17:02,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2025-02-06 02:17:02,412 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:17:02,413 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:02,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 02:17:02,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-06 02:17:02,614 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:17:02,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:17:02,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1203704483, now seen corresponding path program 1 times [2025-02-06 02:17:02,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:17:02,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229857461] [2025-02-06 02:17:02,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:17:02,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:17:02,647 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 259 statements into 1 equivalence classes. [2025-02-06 02:17:02,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 259 of 259 statements. [2025-02-06 02:17:02,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:17:02,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 02:17:02,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1412867930] [2025-02-06 02:17:02,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:17:02,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:17:02,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:17:02,889 INFO L229 MonitoredProcess]: Starting monitored process 7 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 02:17:02,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 02:17:02,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 259 statements into 1 equivalence classes. [2025-02-06 02:17:03,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 259 of 259 statements. [2025-02-06 02:17:03,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:17:03,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:17:03,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-06 02:17:03,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:17:04,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1021 proven. 267 refuted. 0 times theorem prover too weak. 1524 trivial. 0 not checked. [2025-02-06 02:17:04,878 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:17:13,762 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-02-06 02:17:19,630 WARN L286 SmtUtils]: Spent 5.17s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-02-06 02:17:27,461 WARN L286 SmtUtils]: Spent 7.82s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-02-06 02:17:46,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:17:46,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229857461] [2025-02-06 02:17:46,483 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 02:17:46,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412867930] [2025-02-06 02:17:46,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412867930] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:17:46,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:17:46,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2025-02-06 02:17:46,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196382180] [2025-02-06 02:17:46,484 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-06 02:17:46,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 02:17:46,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:17:46,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 02:17:46,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=462, Unknown=2, NotChecked=0, Total=600 [2025-02-06 02:17:46,486 INFO L87 Difference]: Start difference. First operand 482 states and 678 transitions. Second operand has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 16 states have internal predecessors, (84), 4 states have call successors, (38), 4 states have call predecessors, (38), 5 states have return successors, (38), 3 states have call predecessors, (38), 4 states have call successors, (38) [2025-02-06 02:17:49,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:17:49,707 INFO L93 Difference]: Finished difference Result 1670 states and 2332 transitions. [2025-02-06 02:17:49,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-06 02:17:49,708 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 16 states have internal predecessors, (84), 4 states have call successors, (38), 4 states have call predecessors, (38), 5 states have return successors, (38), 3 states have call predecessors, (38), 4 states have call successors, (38) Word has length 259 [2025-02-06 02:17:49,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:17:49,714 INFO L225 Difference]: With dead ends: 1670 [2025-02-06 02:17:49,714 INFO L226 Difference]: Without dead ends: 1414 [2025-02-06 02:17:49,715 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=398, Invalid=1240, Unknown=2, NotChecked=0, Total=1640 [2025-02-06 02:17:49,716 INFO L435 NwaCegarLoop]: 282 mSDtfsCounter, 819 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 2281 SdHoareTripleChecker+Invalid, 2611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-02-06 02:17:49,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 2281 Invalid, 2611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-02-06 02:17:49,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2025-02-06 02:17:49,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 861. [2025-02-06 02:17:49,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 729 states have (on average 1.3415637860082306) internal successors, (978), 729 states have internal predecessors, (978), 114 states have call successors, (114), 17 states have call predecessors, (114), 17 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2025-02-06 02:17:49,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1206 transitions. [2025-02-06 02:17:49,803 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1206 transitions. Word has length 259 [2025-02-06 02:17:49,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:17:49,804 INFO L471 AbstractCegarLoop]: Abstraction has 861 states and 1206 transitions. [2025-02-06 02:17:49,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 16 states have internal predecessors, (84), 4 states have call successors, (38), 4 states have call predecessors, (38), 5 states have return successors, (38), 3 states have call predecessors, (38), 4 states have call successors, (38) [2025-02-06 02:17:49,804 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1206 transitions. [2025-02-06 02:17:49,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2025-02-06 02:17:49,806 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:17:49,806 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:49,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 02:17:50,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-06 02:17:50,011 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:17:50,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:17:50,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1877499955, now seen corresponding path program 1 times [2025-02-06 02:17:50,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:17:50,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551717404] [2025-02-06 02:17:50,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:17:50,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:17:50,030 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 260 statements into 1 equivalence classes. [2025-02-06 02:17:50,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 260 of 260 statements. [2025-02-06 02:17:50,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:17:50,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:17:51,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2025-02-06 02:17:51,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:17:51,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551717404] [2025-02-06 02:17:51,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551717404] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:17:51,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:17:51,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 02:17:51,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835875495] [2025-02-06 02:17:51,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:17:51,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 02:17:51,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:17:51,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 02:17:51,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 02:17:51,038 INFO L87 Difference]: Start difference. First operand 861 states and 1206 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2025-02-06 02:17:51,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:17:51,767 INFO L93 Difference]: Finished difference Result 1580 states and 2216 transitions. [2025-02-06 02:17:51,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 02:17:51,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 260 [2025-02-06 02:17:51,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:17:51,774 INFO L225 Difference]: With dead ends: 1580 [2025-02-06 02:17:51,775 INFO L226 Difference]: Without dead ends: 1017 [2025-02-06 02:17:51,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2025-02-06 02:17:51,778 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 290 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 02:17:51,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 963 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 02:17:51,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2025-02-06 02:17:51,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 937. [2025-02-06 02:17:51,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 805 states have (on average 1.3453416149068322) internal successors, (1083), 805 states have internal predecessors, (1083), 114 states have call successors, (114), 17 states have call predecessors, (114), 17 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2025-02-06 02:17:51,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1311 transitions. [2025-02-06 02:17:51,855 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1311 transitions. Word has length 260 [2025-02-06 02:17:51,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:17:51,856 INFO L471 AbstractCegarLoop]: Abstraction has 937 states and 1311 transitions. [2025-02-06 02:17:51,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2025-02-06 02:17:51,856 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1311 transitions. [2025-02-06 02:17:51,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2025-02-06 02:17:51,859 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:17:51,860 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:51,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 02:17:51,860 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:17:51,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:17:51,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2087701580, now seen corresponding path program 1 times [2025-02-06 02:17:51,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:17:51,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661431760] [2025-02-06 02:17:51,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:17:51,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:17:51,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 260 statements into 1 equivalence classes. [2025-02-06 02:17:52,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 260 of 260 statements. [2025-02-06 02:17:52,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:17:52,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:17:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 681 proven. 210 refuted. 0 times theorem prover too weak. 1921 trivial. 0 not checked. [2025-02-06 02:17:57,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:17:57,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661431760] [2025-02-06 02:17:57,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661431760] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:17:57,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656017333] [2025-02-06 02:17:57,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:17:57,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:17:57,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:17:58,000 INFO L229 MonitoredProcess]: Starting monitored process 8 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 02:17:58,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 02:17:58,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 260 statements into 1 equivalence classes. [2025-02-06 02:17:58,301 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 260 of 260 statements. [2025-02-06 02:17:58,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:17:58,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:17:58,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 79 conjuncts are in the unsatisfiable core [2025-02-06 02:17:58,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:18:03,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1882 proven. 207 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2025-02-06 02:18:03,425 INFO L312 TraceCheckSpWp]: Computing backward predicates...