./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-98.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_amount100_file-98.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 3e656310ec67c2d05ae017a9135a80fcd37a9ab722f93d5597cf89a898d3876d --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 02:08:00,389 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 02:08:00,434 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 02:08:00,439 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 02:08:00,440 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 02:08:00,466 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 02:08:00,467 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 02:08:00,467 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 02:08:00,467 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 02:08:00,467 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 02:08:00,468 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 02:08:00,468 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 02:08:00,468 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 02:08:00,469 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 02:08:00,469 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 02:08:00,469 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 02:08:00,469 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 02:08:00,469 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 02:08:00,469 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 02:08:00,470 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 02:08:00,470 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 02:08:00,470 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 02:08:00,470 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 02:08:00,470 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 02:08:00,470 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 02:08:00,470 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 02:08:00,470 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 02:08:00,470 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 02:08:00,470 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 02:08:00,470 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 02:08:00,470 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 02:08:00,471 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 02:08:00,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:08:00,471 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 02:08:00,471 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 02:08:00,471 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 02:08:00,471 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 02:08:00,472 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 02:08:00,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 02:08:00,472 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 02:08:00,472 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 02:08:00,472 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 02:08:00,472 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 02:08:00,472 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 -> 3e656310ec67c2d05ae017a9135a80fcd37a9ab722f93d5597cf89a898d3876d [2025-02-06 02:08:00,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 02:08:00,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 02:08:00,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 02:08:00,710 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 02:08:00,710 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 02:08:00,712 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-98.i [2025-02-06 02:08:01,880 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d055e50bd/70def0163faa485b89960afb146f9d4f/FLAG2ea5e9f86 [2025-02-06 02:08:02,135 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 02:08:02,135 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-98.i [2025-02-06 02:08:02,141 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d055e50bd/70def0163faa485b89960afb146f9d4f/FLAG2ea5e9f86 [2025-02-06 02:08:02,151 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d055e50bd/70def0163faa485b89960afb146f9d4f [2025-02-06 02:08:02,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 02:08:02,154 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 02:08:02,155 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 02:08:02,155 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 02:08:02,158 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 02:08:02,158 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:08:02" (1/1) ... [2025-02-06 02:08:02,159 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2743f46a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:08:02, skipping insertion in model container [2025-02-06 02:08:02,159 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:08:02" (1/1) ... [2025-02-06 02:08:02,174 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 02:08:02,270 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_amount100_file-98.i[916,929] [2025-02-06 02:08:02,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:08:02,343 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 02:08:02,350 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_amount100_file-98.i[916,929] [2025-02-06 02:08:02,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:08:02,386 INFO L204 MainTranslator]: Completed translation [2025-02-06 02:08:02,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:08:02 WrapperNode [2025-02-06 02:08:02,387 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 02:08:02,389 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 02:08:02,389 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 02:08:02,389 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 02:08:02,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:08:02" (1/1) ... [2025-02-06 02:08:02,403 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:08:02" (1/1) ... [2025-02-06 02:08:02,429 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 176 [2025-02-06 02:08:02,429 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 02:08:02,430 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 02:08:02,430 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 02:08:02,430 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 02:08:02,438 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:08:02" (1/1) ... [2025-02-06 02:08:02,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:08:02" (1/1) ... [2025-02-06 02:08:02,440 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:08:02" (1/1) ... [2025-02-06 02:08:02,455 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 02:08:02,455 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:08:02" (1/1) ... [2025-02-06 02:08:02,455 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:08:02" (1/1) ... [2025-02-06 02:08:02,460 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:08:02" (1/1) ... [2025-02-06 02:08:02,461 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:08:02" (1/1) ... [2025-02-06 02:08:02,462 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:08:02" (1/1) ... [2025-02-06 02:08:02,463 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:08:02" (1/1) ... [2025-02-06 02:08:02,464 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 02:08:02,465 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 02:08:02,465 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 02:08:02,465 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 02:08:02,466 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:08:02" (1/1) ... [2025-02-06 02:08:02,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:08:02,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:08:02,496 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 02:08:02,499 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 02:08:02,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 02:08:02,516 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 02:08:02,516 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 02:08:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 02:08:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 02:08:02,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 02:08:02,579 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 02:08:02,581 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 02:08:02,839 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2025-02-06 02:08:02,840 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 02:08:02,849 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 02:08:02,850 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 02:08:02,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:08:02 BoogieIcfgContainer [2025-02-06 02:08:02,850 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 02:08:02,852 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 02:08:02,852 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 02:08:02,855 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 02:08:02,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 02:08:02" (1/3) ... [2025-02-06 02:08:02,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671426e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:08:02, skipping insertion in model container [2025-02-06 02:08:02,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:08:02" (2/3) ... [2025-02-06 02:08:02,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671426e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:08:02, skipping insertion in model container [2025-02-06 02:08:02,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:08:02" (3/3) ... [2025-02-06 02:08:02,857 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-98.i [2025-02-06 02:08:02,866 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 02:08:02,868 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount100_file-98.i that has 2 procedures, 76 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-06 02:08:02,906 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 02:08:02,914 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;@2013325f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 02:08:02,914 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 02:08:02,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 50 states have (on average 1.42) internal successors, (71), 51 states have internal predecessors, (71), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2025-02-06 02:08:02,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-02-06 02:08:02,929 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:08:02,929 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:02,930 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:08:02,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:08:02,934 INFO L85 PathProgramCache]: Analyzing trace with hash 294215405, now seen corresponding path program 1 times [2025-02-06 02:08:02,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:08:02,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743502482] [2025-02-06 02:08:02,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:08:02,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:08:03,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-06 02:08:03,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-06 02:08:03,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:08:03,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:08:03,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2025-02-06 02:08:03,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:08:03,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743502482] [2025-02-06 02:08:03,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743502482] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:08:03,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904004281] [2025-02-06 02:08:03,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:08:03,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:08:03,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:08:03,219 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 02:08:03,236 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 02:08:03,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-06 02:08:03,372 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-06 02:08:03,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:08:03,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:08:03,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-06 02:08:03,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:08:03,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2025-02-06 02:08:03,411 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 02:08:03,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904004281] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:08:03,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:08:03,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-06 02:08:03,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519644982] [2025-02-06 02:08:03,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:08:03,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 02:08:03,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:08:03,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 02:08:03,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 02:08:03,433 INFO L87 Difference]: Start difference. First operand has 76 states, 50 states have (on average 1.42) internal successors, (71), 51 states have internal predecessors, (71), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2025-02-06 02:08:03,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:08:03,449 INFO L93 Difference]: Finished difference Result 146 states and 252 transitions. [2025-02-06 02:08:03,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 02:08:03,451 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) Word has length 152 [2025-02-06 02:08:03,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:08:03,455 INFO L225 Difference]: With dead ends: 146 [2025-02-06 02:08:03,455 INFO L226 Difference]: Without dead ends: 73 [2025-02-06 02:08:03,457 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 153 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 02:08:03,459 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:08:03,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 02:08:03,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-02-06 02:08:03,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2025-02-06 02:08:03,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 48 states have (on average 1.375) internal successors, (66), 48 states have internal predecessors, (66), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2025-02-06 02:08:03,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 112 transitions. [2025-02-06 02:08:03,487 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 112 transitions. Word has length 152 [2025-02-06 02:08:03,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:08:03,488 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 112 transitions. [2025-02-06 02:08:03,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2025-02-06 02:08:03,489 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 112 transitions. [2025-02-06 02:08:03,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-02-06 02:08:03,491 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:08:03,491 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:03,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 02:08:03,692 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 02:08:03,692 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:08:03,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:08:03,693 INFO L85 PathProgramCache]: Analyzing trace with hash -882963020, now seen corresponding path program 1 times [2025-02-06 02:08:03,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:08:03,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350906724] [2025-02-06 02:08:03,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:08:03,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:08:03,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-06 02:08:03,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-06 02:08:03,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:08:03,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:08:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2025-02-06 02:08:03,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:08:03,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350906724] [2025-02-06 02:08:03,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350906724] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:08:03,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:08:03,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:08:03,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300356999] [2025-02-06 02:08:03,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:08:03,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:08:03,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:08:03,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:08:03,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:08:03,931 INFO L87 Difference]: Start difference. First operand 73 states and 112 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2025-02-06 02:08:04,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:08:04,006 INFO L93 Difference]: Finished difference Result 211 states and 326 transitions. [2025-02-06 02:08:04,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:08:04,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 152 [2025-02-06 02:08:04,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:08:04,009 INFO L225 Difference]: With dead ends: 211 [2025-02-06 02:08:04,011 INFO L226 Difference]: Without dead ends: 141 [2025-02-06 02:08:04,012 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 02:08:04,012 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 97 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:08:04,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 290 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 02:08:04,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2025-02-06 02:08:04,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2025-02-06 02:08:04,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 90 states have (on average 1.3444444444444446) internal successors, (121), 90 states have internal predecessors, (121), 46 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2025-02-06 02:08:04,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 213 transitions. [2025-02-06 02:08:04,047 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 213 transitions. Word has length 152 [2025-02-06 02:08:04,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:08:04,048 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 213 transitions. [2025-02-06 02:08:04,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2025-02-06 02:08:04,048 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 213 transitions. [2025-02-06 02:08:04,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-02-06 02:08:04,050 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:08:04,050 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:04,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 02:08:04,050 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:08:04,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:08:04,050 INFO L85 PathProgramCache]: Analyzing trace with hash 4540661, now seen corresponding path program 1 times [2025-02-06 02:08:04,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:08:04,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659695859] [2025-02-06 02:08:04,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:08:04,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:08:04,080 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-06 02:08:04,239 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-06 02:08:04,240 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:08:04,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:08:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2025-02-06 02:08:04,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:08:04,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659695859] [2025-02-06 02:08:04,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659695859] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:08:04,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:08:04,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 02:08:04,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894899083] [2025-02-06 02:08:04,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:08:04,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 02:08:04,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:08:04,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 02:08:04,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 02:08:04,897 INFO L87 Difference]: Start difference. First operand 139 states and 213 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2025-02-06 02:08:05,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:08:05,162 INFO L93 Difference]: Finished difference Result 373 states and 572 transitions. [2025-02-06 02:08:05,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 02:08:05,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 152 [2025-02-06 02:08:05,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:08:05,164 INFO L225 Difference]: With dead ends: 373 [2025-02-06 02:08:05,164 INFO L226 Difference]: Without dead ends: 237 [2025-02-06 02:08:05,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-02-06 02:08:05,166 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 169 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 02:08:05,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 401 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 02:08:05,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2025-02-06 02:08:05,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 207. [2025-02-06 02:08:05,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 134 states have (on average 1.3582089552238805) internal successors, (182), 134 states have internal predecessors, (182), 69 states have call successors, (69), 3 states have call predecessors, (69), 3 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2025-02-06 02:08:05,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 320 transitions. [2025-02-06 02:08:05,205 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 320 transitions. Word has length 152 [2025-02-06 02:08:05,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:08:05,206 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 320 transitions. [2025-02-06 02:08:05,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2025-02-06 02:08:05,206 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 320 transitions. [2025-02-06 02:08:05,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-02-06 02:08:05,207 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:08:05,207 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:05,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 02:08:05,208 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:08:05,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:08:05,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1357850358, now seen corresponding path program 1 times [2025-02-06 02:08:05,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:08:05,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204207110] [2025-02-06 02:08:05,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:08:05,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:08:05,226 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-06 02:08:05,344 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-06 02:08:05,345 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:08:05,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:08:05,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 42 proven. 24 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2025-02-06 02:08:05,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:08:05,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204207110] [2025-02-06 02:08:05,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204207110] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:08:05,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857557616] [2025-02-06 02:08:05,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:08:05,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:08:05,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:08:05,546 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 02:08:05,547 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 02:08:05,607 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-06 02:08:05,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-06 02:08:05,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:08:05,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:08:05,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 02:08:05,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:08:05,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 498 proven. 24 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2025-02-06 02:08:05,810 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:08:06,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 42 proven. 24 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2025-02-06 02:08:06,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857557616] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:08:06,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:08:06,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-02-06 02:08:06,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814677582] [2025-02-06 02:08:06,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:08:06,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 02:08:06,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:08:06,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 02:08:06,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-02-06 02:08:06,027 INFO L87 Difference]: Start difference. First operand 207 states and 320 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2025-02-06 02:08:06,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:08:06,237 INFO L93 Difference]: Finished difference Result 435 states and 658 transitions. [2025-02-06 02:08:06,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 02:08:06,238 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 152 [2025-02-06 02:08:06,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:08:06,240 INFO L225 Difference]: With dead ends: 435 [2025-02-06 02:08:06,240 INFO L226 Difference]: Without dead ends: 231 [2025-02-06 02:08:06,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 301 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2025-02-06 02:08:06,241 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 118 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:08:06,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 197 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:08:06,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2025-02-06 02:08:06,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 219. [2025-02-06 02:08:06,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 143 states have (on average 1.3006993006993006) internal successors, (186), 143 states have internal predecessors, (186), 69 states have call successors, (69), 6 states have call predecessors, (69), 6 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2025-02-06 02:08:06,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 324 transitions. [2025-02-06 02:08:06,277 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 324 transitions. Word has length 152 [2025-02-06 02:08:06,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:08:06,277 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 324 transitions. [2025-02-06 02:08:06,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2025-02-06 02:08:06,277 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 324 transitions. [2025-02-06 02:08:06,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-02-06 02:08:06,279 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:08:06,279 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:06,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 02:08:06,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:08:06,483 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:08:06,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:08:06,484 INFO L85 PathProgramCache]: Analyzing trace with hash -755765351, now seen corresponding path program 1 times [2025-02-06 02:08:06,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:08:06,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247496563] [2025-02-06 02:08:06,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:08:06,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:08:06,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-02-06 02:08:06,663 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-02-06 02:08:06,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:08:06,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:08:11,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 135 proven. 93 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2025-02-06 02:08:11,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:08:11,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247496563] [2025-02-06 02:08:11,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247496563] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:08:11,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560059705] [2025-02-06 02:08:11,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:08:11,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:08:11,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:08:11,921 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 02:08:11,923 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 02:08:11,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-02-06 02:08:12,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-02-06 02:08:12,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:08:12,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:08:12,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-02-06 02:08:12,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:08:17,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 537 proven. 183 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2025-02-06 02:08:17,218 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:08:55,412 WARN L286 SmtUtils]: Spent 24.53s on a formula simplification that was a NOOP. DAG size: 82 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-02-06 02:08:55,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560059705] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:08:55,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 02:08:55,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 29] total 39 [2025-02-06 02:08:55,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276320923] [2025-02-06 02:08:55,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 02:08:55,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-02-06 02:08:55,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:08:55,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-02-06 02:08:55,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1957, Unknown=0, NotChecked=0, Total=2352 [2025-02-06 02:08:55,421 INFO L87 Difference]: Start difference. First operand 219 states and 324 transitions. Second operand has 39 states, 37 states have (on average 2.5675675675675675) internal successors, (95), 33 states have internal predecessors, (95), 11 states have call successors, (42), 7 states have call predecessors, (42), 10 states have return successors, (42), 12 states have call predecessors, (42), 11 states have call successors, (42) [2025-02-06 02:08:58,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2025-02-06 02:09:03,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0]