./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/fragtest_simple.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 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/loop-invgen/fragtest_simple.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 be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 02:57:45,528 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 02:57:45,587 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 02:57:45,592 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 02:57:45,596 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 02:57:45,610 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 02:57:45,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 02:57:45,611 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 02:57:45,611 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 02:57:45,611 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 02:57:45,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 02:57:45,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 02:57:45,611 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 02:57:45,611 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 02:57:45,611 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 02:57:45,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 02:57:45,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 02:57:45,612 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 02:57:45,612 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 02:57:45,612 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 02:57:45,612 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 02:57:45,612 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 02:57:45,612 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 02:57:45,612 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 02:57:45,612 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 02:57:45,612 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 02:57:45,612 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 02:57:45,612 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 02:57:45,612 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 02:57:45,612 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 02:57:45,612 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 02:57:45,612 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 02:57:45,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 02:57:45,612 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 02:57:45,612 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 02:57:45,612 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 02:57:45,613 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 02:57:45,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 02:57:45,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 02:57:45,613 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 02:57:45,613 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 02:57:45,613 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 02:57:45,613 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 02:57:45,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 02:57:45,613 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 02:57:45,613 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 02:57:45,613 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 02:57:45,613 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 02:57:45,613 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 -> be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e [2025-01-09 02:57:45,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 02:57:45,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 02:57:45,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 02:57:45,843 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 02:57:45,843 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 02:57:45,847 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/fragtest_simple.i [2025-01-09 02:57:47,001 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/31b44572e/aa2bb7d180ef464489db8b4453878fff/FLAG1de7ae4cb [2025-01-09 02:57:47,258 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 02:57:47,259 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loop-invgen/fragtest_simple.i [2025-01-09 02:57:47,265 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/31b44572e/aa2bb7d180ef464489db8b4453878fff/FLAG1de7ae4cb [2025-01-09 02:57:47,281 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/31b44572e/aa2bb7d180ef464489db8b4453878fff [2025-01-09 02:57:47,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 02:57:47,287 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 02:57:47,288 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 02:57:47,289 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 02:57:47,294 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 02:57:47,294 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:57:47" (1/1) ... [2025-01-09 02:57:47,295 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@474c63f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:57:47, skipping insertion in model container [2025-01-09 02:57:47,295 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:57:47" (1/1) ... [2025-01-09 02:57:47,307 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 02:57:47,411 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/loop-invgen/fragtest_simple.i[893,906] [2025-01-09 02:57:47,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 02:57:47,431 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 02:57:47,440 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/loop-invgen/fragtest_simple.i[893,906] [2025-01-09 02:57:47,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 02:57:47,454 INFO L204 MainTranslator]: Completed translation [2025-01-09 02:57:47,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:57:47 WrapperNode [2025-01-09 02:57:47,456 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 02:57:47,456 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 02:57:47,456 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 02:57:47,457 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 02:57:47,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:57:47" (1/1) ... [2025-01-09 02:57:47,465 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:57:47" (1/1) ... [2025-01-09 02:57:47,477 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2025-01-09 02:57:47,478 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 02:57:47,478 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 02:57:47,478 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 02:57:47,479 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 02:57:47,484 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:57:47" (1/1) ... [2025-01-09 02:57:47,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:57:47" (1/1) ... [2025-01-09 02:57:47,485 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:57:47" (1/1) ... [2025-01-09 02:57:47,493 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]. [2025-01-09 02:57:47,494 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:57:47" (1/1) ... [2025-01-09 02:57:47,494 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:57:47" (1/1) ... [2025-01-09 02:57:47,495 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:57:47" (1/1) ... [2025-01-09 02:57:47,495 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:57:47" (1/1) ... [2025-01-09 02:57:47,499 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:57:47" (1/1) ... [2025-01-09 02:57:47,501 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:57:47" (1/1) ... [2025-01-09 02:57:47,501 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:57:47" (1/1) ... [2025-01-09 02:57:47,502 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 02:57:47,505 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 02:57:47,505 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 02:57:47,505 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 02:57:47,506 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:57:47" (1/1) ... [2025-01-09 02:57:47,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 02:57:47,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:57:47,530 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) [2025-01-09 02:57:47,534 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 [2025-01-09 02:57:47,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 02:57:47,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 02:57:47,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 02:57:47,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 02:57:47,587 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 02:57:47,588 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 02:57:47,677 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2025-01-09 02:57:47,677 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 02:57:47,682 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 02:57:47,683 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2025-01-09 02:57:47,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:57:47 BoogieIcfgContainer [2025-01-09 02:57:47,683 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 02:57:47,684 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 02:57:47,685 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 02:57:47,687 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 02:57:47,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 02:57:47" (1/3) ... [2025-01-09 02:57:47,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adb9f4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:57:47, skipping insertion in model container [2025-01-09 02:57:47,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:57:47" (2/3) ... [2025-01-09 02:57:47,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adb9f4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:57:47, skipping insertion in model container [2025-01-09 02:57:47,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:57:47" (3/3) ... [2025-01-09 02:57:47,689 INFO L128 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2025-01-09 02:57:47,698 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 02:57:47,699 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fragtest_simple.i that has 1 procedures, 21 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-01-09 02:57:47,727 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 02:57:47,734 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;@2f1fa471, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 02:57:47,734 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 02:57:47,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:47,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-09 02:57:47,739 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:57:47,740 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:57:47,740 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:57:47,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:57:47,743 INFO L85 PathProgramCache]: Analyzing trace with hash -368949894, now seen corresponding path program 1 times [2025-01-09 02:57:47,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:57:47,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404881164] [2025-01-09 02:57:47,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:57:47,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:57:47,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 02:57:47,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 02:57:47,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:57:47,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:47,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:47,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:57:47,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404881164] [2025-01-09 02:57:47,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404881164] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 02:57:47,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 02:57:47,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 02:57:47,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320678418] [2025-01-09 02:57:47,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 02:57:47,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 02:57:47,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:57:47,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 02:57:47,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 02:57:47,859 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:47,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:57:47,868 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2025-01-09 02:57:47,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 02:57:47,869 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-01-09 02:57:47,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:57:47,873 INFO L225 Difference]: With dead ends: 37 [2025-01-09 02:57:47,873 INFO L226 Difference]: Without dead ends: 17 [2025-01-09 02:57:47,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 02:57:47,877 INFO L435 NwaCegarLoop]: 24 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, 24 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 [2025-01-09 02:57:47,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:57:47,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2025-01-09 02:57:47,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2025-01-09 02:57:47,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:47,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2025-01-09 02:57:47,897 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 10 [2025-01-09 02:57:47,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:57:47,897 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2025-01-09 02:57:47,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:47,898 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2025-01-09 02:57:47,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-01-09 02:57:47,898 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:57:47,899 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:57:47,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 02:57:47,899 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:57:47,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:57:47,900 INFO L85 PathProgramCache]: Analyzing trace with hash -683462281, now seen corresponding path program 1 times [2025-01-09 02:57:47,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:57:47,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85625400] [2025-01-09 02:57:47,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:57:47,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:57:47,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-09 02:57:47,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 02:57:47,929 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:57:47,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:48,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:57:48,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85625400] [2025-01-09 02:57:48,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85625400] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 02:57:48,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 02:57:48,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 02:57:48,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322296940] [2025-01-09 02:57:48,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 02:57:48,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 02:57:48,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:57:48,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 02:57:48,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 02:57:48,080 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:48,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:57:48,118 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2025-01-09 02:57:48,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 02:57:48,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-01-09 02:57:48,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:57:48,119 INFO L225 Difference]: With dead ends: 22 [2025-01-09 02:57:48,119 INFO L226 Difference]: Without dead ends: 20 [2025-01-09 02:57:48,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 02:57:48,119 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:57:48,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 36 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:57:48,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-01-09 02:57:48,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2025-01-09 02:57:48,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:48,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2025-01-09 02:57:48,125 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 12 [2025-01-09 02:57:48,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:57:48,125 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2025-01-09 02:57:48,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:48,125 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2025-01-09 02:57:48,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-01-09 02:57:48,125 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:57:48,126 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:57:48,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 02:57:48,126 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:57:48,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:57:48,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1070032618, now seen corresponding path program 1 times [2025-01-09 02:57:48,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:57:48,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890302684] [2025-01-09 02:57:48,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:57:48,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:57:48,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-09 02:57:48,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 02:57:48,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:57:48,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:48,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:48,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:57:48,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890302684] [2025-01-09 02:57:48,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890302684] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 02:57:48,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 02:57:48,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 02:57:48,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349145775] [2025-01-09 02:57:48,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 02:57:48,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 02:57:48,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:57:48,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 02:57:48,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 02:57:48,214 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:48,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:57:48,269 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2025-01-09 02:57:48,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 02:57:48,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-01-09 02:57:48,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:57:48,271 INFO L225 Difference]: With dead ends: 37 [2025-01-09 02:57:48,271 INFO L226 Difference]: Without dead ends: 26 [2025-01-09 02:57:48,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 02:57:48,272 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 7 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:57:48,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 34 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:57:48,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2025-01-09 02:57:48,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2025-01-09 02:57:48,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:48,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2025-01-09 02:57:48,275 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 16 [2025-01-09 02:57:48,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:57:48,275 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2025-01-09 02:57:48,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:48,275 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2025-01-09 02:57:48,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-01-09 02:57:48,276 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:57:48,276 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:57:48,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 02:57:48,276 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:57:48,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:57:48,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1894415503, now seen corresponding path program 1 times [2025-01-09 02:57:48,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:57:48,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129819201] [2025-01-09 02:57:48,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:57:48,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:57:48,282 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 02:57:48,287 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 02:57:48,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:57:48,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:48,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:48,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:57:48,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129819201] [2025-01-09 02:57:48,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129819201] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:57:48,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299127944] [2025-01-09 02:57:48,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:57:48,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:57:48,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:57:48,406 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) [2025-01-09 02:57:48,410 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 [2025-01-09 02:57:48,440 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 02:57:48,453 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 02:57:48,453 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:57:48,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:48,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 02:57:48,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:57:48,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:48,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:57:48,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:48,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299127944] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:57:48,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:57:48,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2025-01-09 02:57:48,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390321023] [2025-01-09 02:57:48,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:57:48,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 02:57:48,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:57:48,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 02:57:48,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2025-01-09 02:57:48,603 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:48,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:57:48,736 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2025-01-09 02:57:48,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 02:57:48,736 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-01-09 02:57:48,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:57:48,737 INFO L225 Difference]: With dead ends: 49 [2025-01-09 02:57:48,737 INFO L226 Difference]: Without dead ends: 38 [2025-01-09 02:57:48,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2025-01-09 02:57:48,737 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:57:48,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 64 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:57:48,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-01-09 02:57:48,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2025-01-09 02:57:48,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:48,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2025-01-09 02:57:48,741 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 19 [2025-01-09 02:57:48,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:57:48,741 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2025-01-09 02:57:48,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:48,741 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2025-01-09 02:57:48,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-01-09 02:57:48,741 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:57:48,742 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:57:48,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 02:57:48,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:57:48,946 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:57:48,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:57:48,947 INFO L85 PathProgramCache]: Analyzing trace with hash 660945277, now seen corresponding path program 2 times [2025-01-09 02:57:48,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:57:48,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958869756] [2025-01-09 02:57:48,947 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:57:48,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:57:48,953 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-01-09 02:57:48,958 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 02:57:48,958 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:57:48,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:49,043 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:49,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:57:49,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958869756] [2025-01-09 02:57:49,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958869756] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:57:49,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122275851] [2025-01-09 02:57:49,044 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:57:49,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:57:49,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:57:49,049 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) [2025-01-09 02:57:49,050 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 [2025-01-09 02:57:49,074 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-01-09 02:57:49,085 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 02:57:49,085 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:57:49,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:49,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 02:57:49,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:57:49,122 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:49,123 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:57:49,171 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:49,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122275851] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:57:49,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:57:49,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 8 [2025-01-09 02:57:49,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960884153] [2025-01-09 02:57:49,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:57:49,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 02:57:49,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:57:49,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 02:57:49,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-01-09 02:57:49,173 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:49,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:57:49,208 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2025-01-09 02:57:49,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 02:57:49,208 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-01-09 02:57:49,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:57:49,209 INFO L225 Difference]: With dead ends: 36 [2025-01-09 02:57:49,209 INFO L226 Difference]: Without dead ends: 34 [2025-01-09 02:57:49,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2025-01-09 02:57:49,210 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 9 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:57:49,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 76 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:57:49,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2025-01-09 02:57:49,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2025-01-09 02:57:49,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:49,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2025-01-09 02:57:49,213 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 26 [2025-01-09 02:57:49,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:57:49,213 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2025-01-09 02:57:49,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:49,213 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2025-01-09 02:57:49,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-01-09 02:57:49,214 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:57:49,214 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:57:49,220 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 [2025-01-09 02:57:49,417 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 [2025-01-09 02:57:49,418 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:57:49,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:57:49,418 INFO L85 PathProgramCache]: Analyzing trace with hash 536476656, now seen corresponding path program 3 times [2025-01-09 02:57:49,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:57:49,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312272997] [2025-01-09 02:57:49,418 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:57:49,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:57:49,432 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 30 statements into 4 equivalence classes. [2025-01-09 02:57:49,439 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 02:57:49,439 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 02:57:49,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:49,558 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:49,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:57:49,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312272997] [2025-01-09 02:57:49,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312272997] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:57:49,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304368015] [2025-01-09 02:57:49,558 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:57:49,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:57:49,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:57:49,563 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) [2025-01-09 02:57:49,563 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 [2025-01-09 02:57:49,586 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 30 statements into 4 equivalence classes. [2025-01-09 02:57:49,598 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 02:57:49,598 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 02:57:49,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:49,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 02:57:49,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:57:49,684 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:49,685 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:57:49,744 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:49,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304368015] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:57:49,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:57:49,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-01-09 02:57:49,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466152385] [2025-01-09 02:57:49,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:57:49,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 02:57:49,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:57:49,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 02:57:49,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2025-01-09 02:57:49,746 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:49,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:57:49,866 INFO L93 Difference]: Finished difference Result 85 states and 98 transitions. [2025-01-09 02:57:49,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 02:57:49,866 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-01-09 02:57:49,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:57:49,866 INFO L225 Difference]: With dead ends: 85 [2025-01-09 02:57:49,866 INFO L226 Difference]: Without dead ends: 55 [2025-01-09 02:57:49,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2025-01-09 02:57:49,867 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 37 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:57:49,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 89 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:57:49,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-01-09 02:57:49,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 38. [2025-01-09 02:57:49,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 37 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:49,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2025-01-09 02:57:49,871 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 30 [2025-01-09 02:57:49,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:57:49,871 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2025-01-09 02:57:49,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:49,871 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2025-01-09 02:57:49,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-01-09 02:57:49,871 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:57:49,871 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:57:49,877 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 [2025-01-09 02:57:50,075 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 [2025-01-09 02:57:50,075 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:57:50,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:57:50,075 INFO L85 PathProgramCache]: Analyzing trace with hash 87540368, now seen corresponding path program 4 times [2025-01-09 02:57:50,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:57:50,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444502050] [2025-01-09 02:57:50,075 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:57:50,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:57:50,081 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-01-09 02:57:50,090 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 02:57:50,090 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:57:50,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:50,210 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:50,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:57:50,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444502050] [2025-01-09 02:57:50,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444502050] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:57:50,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768524531] [2025-01-09 02:57:50,210 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:57:50,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:57:50,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:57:50,213 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) [2025-01-09 02:57:50,214 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 [2025-01-09 02:57:50,237 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-01-09 02:57:50,253 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 02:57:50,253 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:57:50,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:50,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 02:57:50,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:57:50,304 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:50,305 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:57:50,375 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:50,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768524531] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:57:50,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:57:50,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2025-01-09 02:57:50,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675290233] [2025-01-09 02:57:50,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:57:50,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 02:57:50,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:57:50,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 02:57:50,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-01-09 02:57:50,377 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:50,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:57:50,436 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2025-01-09 02:57:50,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 02:57:50,436 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2025-01-09 02:57:50,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:57:50,436 INFO L225 Difference]: With dead ends: 56 [2025-01-09 02:57:50,437 INFO L226 Difference]: Without dead ends: 54 [2025-01-09 02:57:50,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 66 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2025-01-09 02:57:50,437 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:57:50,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 103 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:57:50,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-01-09 02:57:50,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2025-01-09 02:57:50,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 45 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:50,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2025-01-09 02:57:50,441 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 36 [2025-01-09 02:57:50,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:57:50,441 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2025-01-09 02:57:50,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:50,441 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2025-01-09 02:57:50,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-01-09 02:57:50,442 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:57:50,442 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:57:50,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 02:57:50,642 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,SelfDestructingSolverStorable6 [2025-01-09 02:57:50,642 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:57:50,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:57:50,643 INFO L85 PathProgramCache]: Analyzing trace with hash -285207818, now seen corresponding path program 5 times [2025-01-09 02:57:50,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:57:50,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755834232] [2025-01-09 02:57:50,643 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:57:50,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:57:50,654 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 6 equivalence classes. [2025-01-09 02:57:50,664 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 44 of 44 statements. [2025-01-09 02:57:50,664 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-01-09 02:57:50,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 50 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:50,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:57:50,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755834232] [2025-01-09 02:57:50,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755834232] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:57:50,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197535335] [2025-01-09 02:57:50,805 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:57:50,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:57:50,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:57:50,807 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) [2025-01-09 02:57:50,811 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 [2025-01-09 02:57:50,834 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 6 equivalence classes. [2025-01-09 02:57:50,851 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 44 of 44 statements. [2025-01-09 02:57:50,851 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-01-09 02:57:50,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:50,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-09 02:57:50,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:57:51,025 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 50 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:51,026 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:57:51,128 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 50 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:51,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197535335] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:57:51,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:57:51,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 21 [2025-01-09 02:57:51,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64282242] [2025-01-09 02:57:51,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:57:51,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-09 02:57:51,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:57:51,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-09 02:57:51,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2025-01-09 02:57:51,129 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:51,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:57:51,314 INFO L93 Difference]: Finished difference Result 123 states and 140 transitions. [2025-01-09 02:57:51,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-09 02:57:51,314 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2025-01-09 02:57:51,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:57:51,315 INFO L225 Difference]: With dead ends: 123 [2025-01-09 02:57:51,315 INFO L226 Difference]: Without dead ends: 77 [2025-01-09 02:57:51,315 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 72 SyntacticMatches, 8 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=281, Invalid=711, Unknown=0, NotChecked=0, Total=992 [2025-01-09 02:57:51,316 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 69 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:57:51,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 124 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:57:51,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2025-01-09 02:57:51,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 52. [2025-01-09 02:57:51,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:51,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2025-01-09 02:57:51,320 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 44 [2025-01-09 02:57:51,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:57:51,320 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2025-01-09 02:57:51,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:51,320 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2025-01-09 02:57:51,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-01-09 02:57:51,321 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:57:51,321 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:57:51,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 02:57:51,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:57:51,522 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:57:51,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:57:51,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1120780694, now seen corresponding path program 6 times [2025-01-09 02:57:51,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:57:51,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027826178] [2025-01-09 02:57:51,522 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:57:51,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:57:51,528 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 50 statements into 7 equivalence classes. [2025-01-09 02:57:51,541 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 50 of 50 statements. [2025-01-09 02:57:51,541 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-09 02:57:51,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 40 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:51,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:57:51,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027826178] [2025-01-09 02:57:51,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027826178] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:57:51,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327874942] [2025-01-09 02:57:51,671 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:57:51,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:57:51,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:57:51,672 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) [2025-01-09 02:57:51,674 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 [2025-01-09 02:57:51,699 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 50 statements into 7 equivalence classes. [2025-01-09 02:57:51,716 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 50 of 50 statements. [2025-01-09 02:57:51,717 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-09 02:57:51,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:51,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-09 02:57:51,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:57:51,772 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 57 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:51,772 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:57:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 57 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:51,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327874942] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:57:51,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:57:51,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2025-01-09 02:57:51,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909209109] [2025-01-09 02:57:51,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:57:51,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 02:57:51,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:57:51,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 02:57:51,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2025-01-09 02:57:51,867 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:51,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:57:51,941 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2025-01-09 02:57:51,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-09 02:57:51,945 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-01-09 02:57:51,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:57:51,945 INFO L225 Difference]: With dead ends: 70 [2025-01-09 02:57:51,945 INFO L226 Difference]: Without dead ends: 68 [2025-01-09 02:57:51,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 90 SyntacticMatches, 12 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=242, Unknown=0, NotChecked=0, Total=380 [2025-01-09 02:57:51,946 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 13 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:57:51,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 153 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:57:51,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-01-09 02:57:51,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2025-01-09 02:57:51,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 59 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:51,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2025-01-09 02:57:51,956 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 50 [2025-01-09 02:57:51,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:57:51,956 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2025-01-09 02:57:51,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:51,957 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2025-01-09 02:57:51,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-01-09 02:57:51,957 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:57:51,957 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:57:51,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 02:57:52,157 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,SelfDestructingSolverStorable8 [2025-01-09 02:57:52,158 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:57:52,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:57:52,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1807854588, now seen corresponding path program 7 times [2025-01-09 02:57:52,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:57:52,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936750539] [2025-01-09 02:57:52,159 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:57:52,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:57:52,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-01-09 02:57:52,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-01-09 02:57:52,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:57:52,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:52,452 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 80 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:52,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:57:52,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936750539] [2025-01-09 02:57:52,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936750539] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:57:52,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584827779] [2025-01-09 02:57:52,452 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:57:52,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:57:52,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:57:52,455 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) [2025-01-09 02:57:52,456 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 [2025-01-09 02:57:52,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-01-09 02:57:52,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-01-09 02:57:52,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:57:52,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:52,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 02:57:52,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:57:52,718 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 96 proven. 57 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 02:57:52,718 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:57:52,838 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 96 proven. 57 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 02:57:52,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584827779] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:57:52,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:57:52,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 26 [2025-01-09 02:57:52,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381303339] [2025-01-09 02:57:52,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:57:52,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-09 02:57:52,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:57:52,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-09 02:57:52,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2025-01-09 02:57:52,840 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 26 states, 26 states have (on average 3.6538461538461537) internal successors, (95), 26 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:52,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:57:52,999 INFO L93 Difference]: Finished difference Result 125 states and 143 transitions. [2025-01-09 02:57:52,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 02:57:53,000 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6538461538461537) internal successors, (95), 26 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-01-09 02:57:53,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:57:53,000 INFO L225 Difference]: With dead ends: 125 [2025-01-09 02:57:53,000 INFO L226 Difference]: Without dead ends: 92 [2025-01-09 02:57:53,001 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 95 SyntacticMatches, 12 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=270, Invalid=786, Unknown=0, NotChecked=0, Total=1056 [2025-01-09 02:57:53,001 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 61 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:57:53,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 133 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:57:53,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2025-01-09 02:57:53,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 63. [2025-01-09 02:57:53,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.064516129032258) internal successors, (66), 62 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:53,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2025-01-09 02:57:53,012 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 58 [2025-01-09 02:57:53,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:57:53,012 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2025-01-09 02:57:53,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6538461538461537) internal successors, (95), 26 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:53,013 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2025-01-09 02:57:53,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-01-09 02:57:53,013 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:57:53,013 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:57:53,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 02:57:53,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:57:53,214 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:57:53,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:57:53,214 INFO L85 PathProgramCache]: Analyzing trace with hash -953274429, now seen corresponding path program 8 times [2025-01-09 02:57:53,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:57:53,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127274026] [2025-01-09 02:57:53,214 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:57:53,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:57:53,220 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 61 statements into 2 equivalence classes. [2025-01-09 02:57:53,228 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 61 of 61 statements. [2025-01-09 02:57:53,228 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:57:53,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:53,431 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 80 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:53,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:57:53,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127274026] [2025-01-09 02:57:53,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127274026] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:57:53,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362447067] [2025-01-09 02:57:53,431 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:57:53,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:57:53,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:57:53,433 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:57:53,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 02:57:53,477 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 61 statements into 2 equivalence classes. [2025-01-09 02:57:53,495 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 61 of 61 statements. [2025-01-09 02:57:53,496 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:57:53,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:53,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 02:57:53,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:57:53,652 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 77 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:53,652 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:57:53,865 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 77 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:53,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362447067] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:57:53,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:57:53,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 11] total 27 [2025-01-09 02:57:53,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735308449] [2025-01-09 02:57:53,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:57:53,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-01-09 02:57:53,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:57:53,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-01-09 02:57:53,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2025-01-09 02:57:53,868 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 27 states, 27 states have (on average 4.444444444444445) internal successors, (120), 27 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:54,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:57:54,392 INFO L93 Difference]: Finished difference Result 139 states and 160 transitions. [2025-01-09 02:57:54,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-01-09 02:57:54,392 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.444444444444445) internal successors, (120), 27 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2025-01-09 02:57:54,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:57:54,393 INFO L225 Difference]: With dead ends: 139 [2025-01-09 02:57:54,393 INFO L226 Difference]: Without dead ends: 104 [2025-01-09 02:57:54,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 105 SyntacticMatches, 16 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=750, Invalid=3410, Unknown=0, NotChecked=0, Total=4160 [2025-01-09 02:57:54,395 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 110 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:57:54,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 133 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:57:54,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2025-01-09 02:57:54,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 70. [2025-01-09 02:57:54,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 69 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:54,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2025-01-09 02:57:54,400 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 61 [2025-01-09 02:57:54,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:57:54,400 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2025-01-09 02:57:54,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.444444444444445) internal successors, (120), 27 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:54,400 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2025-01-09 02:57:54,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-01-09 02:57:54,401 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:57:54,401 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:57:54,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-09 02:57:54,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:57:54,605 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:57:54,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:57:54,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1464229263, now seen corresponding path program 9 times [2025-01-09 02:57:54,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:57:54,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107610761] [2025-01-09 02:57:54,606 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:57:54,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:57:54,612 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 68 statements into 9 equivalence classes. [2025-01-09 02:57:54,628 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 68 of 68 statements. [2025-01-09 02:57:54,628 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-01-09 02:57:54,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:54,875 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 107 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:54,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:57:54,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107610761] [2025-01-09 02:57:54,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107610761] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:57:54,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340983090] [2025-01-09 02:57:54,875 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:57:54,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:57:54,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:57:54,878 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:57:54,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 02:57:54,912 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 68 statements into 9 equivalence classes. [2025-01-09 02:57:54,934 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 68 of 68 statements. [2025-01-09 02:57:54,934 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-01-09 02:57:54,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:54,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 02:57:54,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:57:55,156 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 128 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:55,157 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:57:55,325 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 128 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:55,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340983090] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:57:55,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:57:55,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 31 [2025-01-09 02:57:55,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48406057] [2025-01-09 02:57:55,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:57:55,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-01-09 02:57:55,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:57:55,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-01-09 02:57:55,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=706, Unknown=0, NotChecked=0, Total=930 [2025-01-09 02:57:55,327 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand has 31 states, 31 states have (on average 3.5161290322580645) internal successors, (109), 31 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:55,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:57:55,510 INFO L93 Difference]: Finished difference Result 149 states and 171 transitions. [2025-01-09 02:57:55,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-09 02:57:55,510 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.5161290322580645) internal successors, (109), 31 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-01-09 02:57:55,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:57:55,511 INFO L225 Difference]: With dead ends: 149 [2025-01-09 02:57:55,511 INFO L226 Difference]: Without dead ends: 110 [2025-01-09 02:57:55,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 109 SyntacticMatches, 16 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=400, Invalid=1082, Unknown=0, NotChecked=0, Total=1482 [2025-01-09 02:57:55,512 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 79 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:57:55,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 177 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:57:55,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2025-01-09 02:57:55,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 73. [2025-01-09 02:57:55,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0555555555555556) internal successors, (76), 72 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:55,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2025-01-09 02:57:55,516 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 68 [2025-01-09 02:57:55,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:57:55,516 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2025-01-09 02:57:55,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.5161290322580645) internal successors, (109), 31 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:55,516 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2025-01-09 02:57:55,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-01-09 02:57:55,517 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:57:55,517 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:57:55,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-09 02:57:55,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:57:55,721 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:57:55,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:57:55,721 INFO L85 PathProgramCache]: Analyzing trace with hash 552735894, now seen corresponding path program 10 times [2025-01-09 02:57:55,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:57:55,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98796389] [2025-01-09 02:57:55,722 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:57:55,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:57:55,727 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 71 statements into 2 equivalence classes. [2025-01-09 02:57:55,735 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 71 of 71 statements. [2025-01-09 02:57:55,736 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:57:55,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:55,900 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 126 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:55,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:57:55,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98796389] [2025-01-09 02:57:55,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98796389] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:57:55,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897425158] [2025-01-09 02:57:55,900 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:57:55,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:57:55,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:57:55,905 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:57:55,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 02:57:55,938 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 71 statements into 2 equivalence classes. [2025-01-09 02:57:55,958 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 71 of 71 statements. [2025-01-09 02:57:55,958 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:57:55,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:55,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-09 02:57:55,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:57:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 126 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:56,031 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:57:56,188 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 126 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:56,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897425158] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:57:56,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:57:56,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 15 [2025-01-09 02:57:56,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400563866] [2025-01-09 02:57:56,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:57:56,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 02:57:56,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:57:56,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 02:57:56,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2025-01-09 02:57:56,190 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:56,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:57:56,290 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2025-01-09 02:57:56,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 02:57:56,290 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2025-01-09 02:57:56,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:57:56,291 INFO L225 Difference]: With dead ends: 91 [2025-01-09 02:57:56,291 INFO L226 Difference]: Without dead ends: 89 [2025-01-09 02:57:56,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 131 SyntacticMatches, 17 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=367, Unknown=0, NotChecked=0, Total=600 [2025-01-09 02:57:56,291 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 16 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:57:56,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 166 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:57:56,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2025-01-09 02:57:56,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2025-01-09 02:57:56,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.05) internal successors, (84), 80 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2025-01-09 02:57:56,295 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 71 [2025-01-09 02:57:56,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:57:56,295 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2025-01-09 02:57:56,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:56,295 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2025-01-09 02:57:56,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-01-09 02:57:56,296 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:57:56,296 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:57:56,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-09 02:57:56,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-01-09 02:57:56,497 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:57:56,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:57:56,497 INFO L85 PathProgramCache]: Analyzing trace with hash 367197948, now seen corresponding path program 11 times [2025-01-09 02:57:56,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:57:56,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414011544] [2025-01-09 02:57:56,498 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:57:56,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:57:56,508 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 79 statements into 11 equivalence classes. [2025-01-09 02:57:56,526 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 79 of 79 statements. [2025-01-09 02:57:56,526 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-01-09 02:57:56,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:56,825 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 200 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:56,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:57:56,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414011544] [2025-01-09 02:57:56,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414011544] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:57:56,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274678474] [2025-01-09 02:57:56,826 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:57:56,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:57:56,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:57:56,828 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:57:56,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-09 02:57:56,860 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 79 statements into 11 equivalence classes. [2025-01-09 02:57:56,887 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 79 of 79 statements. [2025-01-09 02:57:56,887 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-01-09 02:57:56,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:56,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-09 02:57:56,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:57:57,187 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 200 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:57,188 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:57:57,426 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 200 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:57,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274678474] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:57:57,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:57:57,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 36 [2025-01-09 02:57:57,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661525211] [2025-01-09 02:57:57,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:57:57,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-01-09 02:57:57,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:57:57,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-01-09 02:57:57,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2025-01-09 02:57:57,428 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand has 36 states, 36 states have (on average 3.638888888888889) internal successors, (131), 36 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:57,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:57:57,750 INFO L93 Difference]: Finished difference Result 218 states and 245 transitions. [2025-01-09 02:57:57,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-01-09 02:57:57,750 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.638888888888889) internal successors, (131), 36 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2025-01-09 02:57:57,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:57:57,751 INFO L225 Difference]: With dead ends: 218 [2025-01-09 02:57:57,751 INFO L226 Difference]: Without dead ends: 132 [2025-01-09 02:57:57,752 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 127 SyntacticMatches, 18 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=846, Invalid=2346, Unknown=0, NotChecked=0, Total=3192 [2025-01-09 02:57:57,752 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 134 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:57:57,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 251 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:57:57,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-01-09 02:57:57,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 87. [2025-01-09 02:57:57,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.0465116279069768) internal successors, (90), 86 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:57,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2025-01-09 02:57:57,756 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 79 [2025-01-09 02:57:57,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:57:57,756 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2025-01-09 02:57:57,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.638888888888889) internal successors, (131), 36 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:57,756 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2025-01-09 02:57:57,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-01-09 02:57:57,757 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:57:57,757 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:57:57,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-09 02:57:57,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-01-09 02:57:57,961 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:57:57,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:57:57,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1496724388, now seen corresponding path program 12 times [2025-01-09 02:57:57,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:57:57,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555834217] [2025-01-09 02:57:57,961 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:57:57,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:57:57,967 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 85 statements into 12 equivalence classes. [2025-01-09 02:57:57,983 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) and asserted 85 of 85 statements. [2025-01-09 02:57:57,983 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2025-01-09 02:57:57,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:58,194 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 155 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:58,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:57:58,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555834217] [2025-01-09 02:57:58,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555834217] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:57:58,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806402874] [2025-01-09 02:57:58,195 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:57:58,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:57:58,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:57:58,200 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:57:58,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-09 02:57:58,234 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 85 statements into 12 equivalence classes. [2025-01-09 02:57:58,262 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) and asserted 85 of 85 statements. [2025-01-09 02:57:58,262 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2025-01-09 02:57:58,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:58,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-09 02:57:58,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:57:58,342 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 187 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:58,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:57:58,511 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 187 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:58,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806402874] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:57:58,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:57:58,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 18 [2025-01-09 02:57:58,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582489234] [2025-01-09 02:57:58,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:57:58,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 02:57:58,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:57:58,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 02:57:58,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=192, Unknown=0, NotChecked=0, Total=306 [2025-01-09 02:57:58,512 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:58,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:57:58,648 INFO L93 Difference]: Finished difference Result 105 states and 109 transitions. [2025-01-09 02:57:58,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-01-09 02:57:58,648 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2025-01-09 02:57:58,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:57:58,649 INFO L225 Difference]: With dead ends: 105 [2025-01-09 02:57:58,649 INFO L226 Difference]: Without dead ends: 103 [2025-01-09 02:57:58,649 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 155 SyntacticMatches, 22 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=318, Invalid=552, Unknown=0, NotChecked=0, Total=870 [2025-01-09 02:57:58,649 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 14 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:57:58,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 217 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:57:58,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2025-01-09 02:57:58,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 95. [2025-01-09 02:57:58,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.0425531914893618) internal successors, (98), 94 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:58,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2025-01-09 02:57:58,653 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 85 [2025-01-09 02:57:58,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:57:58,654 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2025-01-09 02:57:58,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:57:58,654 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2025-01-09 02:57:58,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-01-09 02:57:58,654 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:57:58,654 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:57:58,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-09 02:57:58,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:57:58,859 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:57:58,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:57:58,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1828819138, now seen corresponding path program 13 times [2025-01-09 02:57:58,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:57:58,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769758342] [2025-01-09 02:57:58,860 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:57:58,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:57:58,865 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-01-09 02:57:58,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-01-09 02:57:58,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:57:58,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:59,187 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 255 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:57:59,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:57:59,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769758342] [2025-01-09 02:57:59,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769758342] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:57:59,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461191676] [2025-01-09 02:57:59,188 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:57:59,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:57:59,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:57:59,193 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:57:59,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-09 02:57:59,239 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-01-09 02:57:59,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-01-09 02:57:59,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:57:59,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:57:59,267 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-09 02:57:59,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:57:59,622 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 286 proven. 187 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 02:57:59,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:57:59,914 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 286 proven. 187 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 02:57:59,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461191676] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:57:59,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:57:59,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 41 [2025-01-09 02:57:59,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976927015] [2025-01-09 02:57:59,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:57:59,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-01-09 02:57:59,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:57:59,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-01-09 02:57:59,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1259, Unknown=0, NotChecked=0, Total=1640 [2025-01-09 02:57:59,917 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:00,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:00,189 INFO L93 Difference]: Finished difference Result 200 states and 228 transitions. [2025-01-09 02:58:00,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-09 02:58:00,189 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2025-01-09 02:58:00,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:00,190 INFO L225 Difference]: With dead ends: 200 [2025-01-09 02:58:00,190 INFO L226 Difference]: Without dead ends: 147 [2025-01-09 02:58:00,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 150 SyntacticMatches, 22 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=695, Invalid=2061, Unknown=0, NotChecked=0, Total=2756 [2025-01-09 02:58:00,191 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 115 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:00,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 273 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:58:00,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2025-01-09 02:58:00,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 98. [2025-01-09 02:58:00,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.041237113402062) internal successors, (101), 97 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:00,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2025-01-09 02:58:00,196 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 93 [2025-01-09 02:58:00,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:00,196 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2025-01-09 02:58:00,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:00,196 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2025-01-09 02:58:00,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-01-09 02:58:00,197 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:00,197 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:00,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:00,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:00,397 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:00,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:00,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1324154981, now seen corresponding path program 14 times [2025-01-09 02:58:00,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:00,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832525661] [2025-01-09 02:58:00,397 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:58:00,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:00,404 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 96 statements into 2 equivalence classes. [2025-01-09 02:58:00,412 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 96 of 96 statements. [2025-01-09 02:58:00,412 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:58:00,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:00,756 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 255 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:00,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:00,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832525661] [2025-01-09 02:58:00,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832525661] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:00,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138934095] [2025-01-09 02:58:00,757 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:58:00,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:00,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:00,758 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:00,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-09 02:58:00,800 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 96 statements into 2 equivalence classes. [2025-01-09 02:58:00,825 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 96 of 96 statements. [2025-01-09 02:58:00,825 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:58:00,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:00,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-09 02:58:00,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:01,188 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 288 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:01,189 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:01,472 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 288 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:01,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138934095] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:01,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:01,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 43 [2025-01-09 02:58:01,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480152577] [2025-01-09 02:58:01,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:01,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-01-09 02:58:01,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:01,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-01-09 02:58:01,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=1383, Unknown=0, NotChecked=0, Total=1806 [2025-01-09 02:58:01,474 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand has 43 states, 43 states have (on average 3.558139534883721) internal successors, (153), 43 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:01,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:01,763 INFO L93 Difference]: Finished difference Result 209 states and 239 transitions. [2025-01-09 02:58:01,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-01-09 02:58:01,764 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.558139534883721) internal successors, (153), 43 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2025-01-09 02:58:01,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:01,765 INFO L225 Difference]: With dead ends: 209 [2025-01-09 02:58:01,765 INFO L226 Difference]: Without dead ends: 154 [2025-01-09 02:58:01,766 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 153 SyntacticMatches, 24 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=789, Invalid=2291, Unknown=0, NotChecked=0, Total=3080 [2025-01-09 02:58:01,766 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 142 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:01,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 256 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:01,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2025-01-09 02:58:01,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 101. [2025-01-09 02:58:01,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.04) internal successors, (104), 100 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:01,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 104 transitions. [2025-01-09 02:58:01,771 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 104 transitions. Word has length 96 [2025-01-09 02:58:01,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:01,772 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 104 transitions. [2025-01-09 02:58:01,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.558139534883721) internal successors, (153), 43 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:01,772 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 104 transitions. [2025-01-09 02:58:01,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-01-09 02:58:01,772 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:01,773 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:01,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:01,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-09 02:58:01,973 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:01,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:01,974 INFO L85 PathProgramCache]: Analyzing trace with hash -641370590, now seen corresponding path program 15 times [2025-01-09 02:58:01,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:01,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638446028] [2025-01-09 02:58:01,974 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:58:01,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:01,981 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 99 statements into 14 equivalence classes. [2025-01-09 02:58:02,014 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) and asserted 99 of 99 statements. [2025-01-09 02:58:02,015 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2025-01-09 02:58:02,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:02,254 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 222 proven. 326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:02,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:02,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638446028] [2025-01-09 02:58:02,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638446028] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:02,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082479142] [2025-01-09 02:58:02,254 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:58:02,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:02,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:02,256 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:02,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-09 02:58:02,295 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 99 statements into 14 equivalence classes. [2025-01-09 02:58:02,327 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) and asserted 99 of 99 statements. [2025-01-09 02:58:02,327 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2025-01-09 02:58:02,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:02,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-01-09 02:58:02,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:02,415 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 260 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:02,415 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:02,624 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 260 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:02,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082479142] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:02,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:02,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 20 [2025-01-09 02:58:02,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242449496] [2025-01-09 02:58:02,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:02,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 02:58:02,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:02,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 02:58:02,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2025-01-09 02:58:02,625 INFO L87 Difference]: Start difference. First operand 101 states and 104 transitions. Second operand has 20 states, 20 states have (on average 6.2) internal successors, (124), 20 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:02,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:02,762 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2025-01-09 02:58:02,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-01-09 02:58:02,762 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 20 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2025-01-09 02:58:02,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:02,763 INFO L225 Difference]: With dead ends: 119 [2025-01-09 02:58:02,763 INFO L226 Difference]: Without dead ends: 117 [2025-01-09 02:58:02,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 181 SyntacticMatches, 26 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=411, Invalid=711, Unknown=0, NotChecked=0, Total=1122 [2025-01-09 02:58:02,763 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 16 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:02,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 216 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:02,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-01-09 02:58:02,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 109. [2025-01-09 02:58:02,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.037037037037037) internal successors, (112), 108 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:02,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 112 transitions. [2025-01-09 02:58:02,769 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 112 transitions. Word has length 99 [2025-01-09 02:58:02,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:02,769 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 112 transitions. [2025-01-09 02:58:02,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 20 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:02,769 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 112 transitions. [2025-01-09 02:58:02,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-01-09 02:58:02,771 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:02,771 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:02,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:02,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-09 02:58:02,975 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:02,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:02,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1328682120, now seen corresponding path program 16 times [2025-01-09 02:58:02,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:02,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471152140] [2025-01-09 02:58:02,976 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:58:02,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:02,983 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 107 statements into 2 equivalence classes. [2025-01-09 02:58:02,990 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 75 of 107 statements. [2025-01-09 02:58:02,990 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 02:58:02,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 392 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:03,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:03,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471152140] [2025-01-09 02:58:03,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471152140] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:03,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424133007] [2025-01-09 02:58:03,345 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:58:03,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:03,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:03,347 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:03,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-09 02:58:03,395 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 107 statements into 2 equivalence classes. [2025-01-09 02:58:03,417 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 75 of 107 statements. [2025-01-09 02:58:03,417 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 02:58:03,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:03,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-09 02:58:03,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:03,980 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 390 proven. 260 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 02:58:03,980 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:04,269 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 390 proven. 260 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 02:58:04,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424133007] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:04,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:04,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 45 [2025-01-09 02:58:04,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672248327] [2025-01-09 02:58:04,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:04,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-01-09 02:58:04,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:04,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-01-09 02:58:04,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=1501, Unknown=0, NotChecked=0, Total=1980 [2025-01-09 02:58:04,270 INFO L87 Difference]: Start difference. First operand 109 states and 112 transitions. Second operand has 45 states, 45 states have (on average 3.6444444444444444) internal successors, (164), 45 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:04,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:04,566 INFO L93 Difference]: Finished difference Result 230 states and 262 transitions. [2025-01-09 02:58:04,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-01-09 02:58:04,566 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.6444444444444444) internal successors, (164), 45 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2025-01-09 02:58:04,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:04,567 INFO L225 Difference]: With dead ends: 230 [2025-01-09 02:58:04,567 INFO L226 Difference]: Without dead ends: 169 [2025-01-09 02:58:04,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 173 SyntacticMatches, 27 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1118 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=913, Invalid=2509, Unknown=0, NotChecked=0, Total=3422 [2025-01-09 02:58:04,568 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 139 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:04,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 280 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:58:04,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2025-01-09 02:58:04,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 112. [2025-01-09 02:58:04,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.0360360360360361) internal successors, (115), 111 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:04,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 115 transitions. [2025-01-09 02:58:04,572 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 115 transitions. Word has length 107 [2025-01-09 02:58:04,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:04,572 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 115 transitions. [2025-01-09 02:58:04,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.6444444444444444) internal successors, (164), 45 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:04,572 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 115 transitions. [2025-01-09 02:58:04,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2025-01-09 02:58:04,573 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:04,573 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:04,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:04,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:04,774 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:04,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:04,774 INFO L85 PathProgramCache]: Analyzing trace with hash 338170785, now seen corresponding path program 17 times [2025-01-09 02:58:04,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:04,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998402747] [2025-01-09 02:58:04,774 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:58:04,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:04,780 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 110 statements into 15 equivalence classes. [2025-01-09 02:58:04,794 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 110 of 110 statements. [2025-01-09 02:58:04,795 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-01-09 02:58:04,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:05,204 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 392 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:05,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:05,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998402747] [2025-01-09 02:58:05,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998402747] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:05,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254949204] [2025-01-09 02:58:05,204 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:58:05,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:05,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:05,211 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:05,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-09 02:58:05,272 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 110 statements into 15 equivalence classes. [2025-01-09 02:58:05,312 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 110 of 110 statements. [2025-01-09 02:58:05,312 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-01-09 02:58:05,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:05,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-01-09 02:58:05,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:05,756 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 392 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:05,756 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 392 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:06,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254949204] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:06,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:06,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 47 [2025-01-09 02:58:06,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788733106] [2025-01-09 02:58:06,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:06,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-01-09 02:58:06,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:06,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-01-09 02:58:06,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=1636, Unknown=0, NotChecked=0, Total=2162 [2025-01-09 02:58:06,106 INFO L87 Difference]: Start difference. First operand 112 states and 115 transitions. Second operand has 47 states, 47 states have (on average 3.5531914893617023) internal successors, (167), 47 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:06,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:06,458 INFO L93 Difference]: Finished difference Result 239 states and 273 transitions. [2025-01-09 02:58:06,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-01-09 02:58:06,459 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.5531914893617023) internal successors, (167), 47 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2025-01-09 02:58:06,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:06,459 INFO L225 Difference]: With dead ends: 239 [2025-01-09 02:58:06,460 INFO L226 Difference]: Without dead ends: 176 [2025-01-09 02:58:06,460 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 176 SyntacticMatches, 29 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1232 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1021, Invalid=2761, Unknown=0, NotChecked=0, Total=3782 [2025-01-09 02:58:06,461 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 179 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:06,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 309 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:58:06,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2025-01-09 02:58:06,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 115. [2025-01-09 02:58:06,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.0350877192982457) internal successors, (118), 114 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:06,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 118 transitions. [2025-01-09 02:58:06,465 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 118 transitions. Word has length 110 [2025-01-09 02:58:06,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:06,465 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 118 transitions. [2025-01-09 02:58:06,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.5531914893617023) internal successors, (167), 47 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:06,465 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 118 transitions. [2025-01-09 02:58:06,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-01-09 02:58:06,466 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:06,466 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:06,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:06,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:06,670 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:06,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:06,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1559686680, now seen corresponding path program 18 times [2025-01-09 02:58:06,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:06,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612494326] [2025-01-09 02:58:06,671 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:58:06,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:06,680 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 113 statements into 16 equivalence classes. [2025-01-09 02:58:06,706 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) and asserted 113 of 113 statements. [2025-01-09 02:58:06,706 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2025-01-09 02:58:06,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:07,155 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 301 proven. 436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:07,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:07,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612494326] [2025-01-09 02:58:07,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612494326] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:07,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414974901] [2025-01-09 02:58:07,155 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:58:07,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:07,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:07,161 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:07,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-09 02:58:07,223 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 113 statements into 16 equivalence classes. [2025-01-09 02:58:07,262 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) and asserted 113 of 113 statements. [2025-01-09 02:58:07,262 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2025-01-09 02:58:07,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:07,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-01-09 02:58:07,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:07,489 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 345 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:07,489 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:07,748 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 345 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:07,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414974901] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:07,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:07,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 22 [2025-01-09 02:58:07,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873147535] [2025-01-09 02:58:07,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:07,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 02:58:07,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:07,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 02:58:07,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=282, Unknown=0, NotChecked=0, Total=462 [2025-01-09 02:58:07,749 INFO L87 Difference]: Start difference. First operand 115 states and 118 transitions. Second operand has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 22 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:07,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:07,921 INFO L93 Difference]: Finished difference Result 133 states and 137 transitions. [2025-01-09 02:58:07,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-01-09 02:58:07,922 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 22 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2025-01-09 02:58:07,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:07,922 INFO L225 Difference]: With dead ends: 133 [2025-01-09 02:58:07,922 INFO L226 Difference]: Without dead ends: 131 [2025-01-09 02:58:07,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 208 SyntacticMatches, 29 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=516, Invalid=890, Unknown=0, NotChecked=0, Total=1406 [2025-01-09 02:58:07,923 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 14 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:07,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 249 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:07,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2025-01-09 02:58:07,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 123. [2025-01-09 02:58:07,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.0327868852459017) internal successors, (126), 122 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:07,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 126 transitions. [2025-01-09 02:58:07,927 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 126 transitions. Word has length 113 [2025-01-09 02:58:07,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:07,927 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 126 transitions. [2025-01-09 02:58:07,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 22 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:07,928 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 126 transitions. [2025-01-09 02:58:07,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-01-09 02:58:07,928 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:07,928 INFO L218 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:07,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:08,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:08,133 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:08,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:08,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1100515918, now seen corresponding path program 19 times [2025-01-09 02:58:08,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:08,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929242409] [2025-01-09 02:58:08,133 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:58:08,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:08,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-01-09 02:58:08,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-01-09 02:58:08,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:58:08,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:08,718 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 467 proven. 390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:08,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:08,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929242409] [2025-01-09 02:58:08,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929242409] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:08,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859210534] [2025-01-09 02:58:08,719 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:58:08,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:08,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:08,720 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:08,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-09 02:58:08,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-01-09 02:58:08,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-01-09 02:58:08,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:58:08,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:08,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-01-09 02:58:08,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:09,392 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 510 proven. 345 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 02:58:09,392 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 510 proven. 345 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 02:58:09,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859210534] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:09,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:09,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 53 [2025-01-09 02:58:09,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831060771] [2025-01-09 02:58:09,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:09,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-01-09 02:58:09,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:09,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-01-09 02:58:09,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=633, Invalid=2123, Unknown=0, NotChecked=0, Total=2756 [2025-01-09 02:58:09,686 INFO L87 Difference]: Start difference. First operand 123 states and 126 transitions. Second operand has 53 states, 53 states have (on average 3.660377358490566) internal successors, (194), 53 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:09,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:09,996 INFO L93 Difference]: Finished difference Result 260 states and 296 transitions. [2025-01-09 02:58:09,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-01-09 02:58:09,997 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.660377358490566) internal successors, (194), 53 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2025-01-09 02:58:09,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:09,997 INFO L225 Difference]: With dead ends: 260 [2025-01-09 02:58:09,998 INFO L226 Difference]: Without dead ends: 191 [2025-01-09 02:58:09,999 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 194 SyntacticMatches, 30 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1735 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1179, Invalid=3513, Unknown=0, NotChecked=0, Total=4692 [2025-01-09 02:58:10,000 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 166 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:10,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 365 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:58:10,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2025-01-09 02:58:10,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 126. [2025-01-09 02:58:10,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.032) internal successors, (129), 125 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:10,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 129 transitions. [2025-01-09 02:58:10,005 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 129 transitions. Word has length 121 [2025-01-09 02:58:10,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:10,005 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 129 transitions. [2025-01-09 02:58:10,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.660377358490566) internal successors, (194), 53 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:10,005 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 129 transitions. [2025-01-09 02:58:10,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-01-09 02:58:10,006 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:10,006 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:10,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:10,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:10,211 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:10,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:10,212 INFO L85 PathProgramCache]: Analyzing trace with hash 185706919, now seen corresponding path program 20 times [2025-01-09 02:58:10,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:10,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825466326] [2025-01-09 02:58:10,212 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:58:10,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:10,219 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 124 statements into 2 equivalence classes. [2025-01-09 02:58:10,232 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 124 of 124 statements. [2025-01-09 02:58:10,232 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:58:10,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:10,686 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 467 proven. 437 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:10,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:10,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825466326] [2025-01-09 02:58:10,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825466326] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:10,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68117665] [2025-01-09 02:58:10,687 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:58:10,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:10,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:10,689 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:10,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-09 02:58:10,745 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 124 statements into 2 equivalence classes. [2025-01-09 02:58:10,775 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 124 of 124 statements. [2025-01-09 02:58:10,775 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:58:10,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:10,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-01-09 02:58:10,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:11,279 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 512 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:11,279 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:11,611 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 512 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:11,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68117665] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:11,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:11,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 55 [2025-01-09 02:58:11,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344740635] [2025-01-09 02:58:11,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:11,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-01-09 02:58:11,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:11,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-01-09 02:58:11,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=687, Invalid=2283, Unknown=0, NotChecked=0, Total=2970 [2025-01-09 02:58:11,614 INFO L87 Difference]: Start difference. First operand 126 states and 129 transitions. Second operand has 55 states, 55 states have (on average 3.581818181818182) internal successors, (197), 55 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:11,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:11,957 INFO L93 Difference]: Finished difference Result 269 states and 307 transitions. [2025-01-09 02:58:11,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-01-09 02:58:11,957 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.581818181818182) internal successors, (197), 55 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2025-01-09 02:58:11,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:11,959 INFO L225 Difference]: With dead ends: 269 [2025-01-09 02:58:11,959 INFO L226 Difference]: Without dead ends: 198 [2025-01-09 02:58:11,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 197 SyntacticMatches, 32 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1880 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1301, Invalid=3811, Unknown=0, NotChecked=0, Total=5112 [2025-01-09 02:58:11,962 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 172 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:11,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 352 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:58:11,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2025-01-09 02:58:11,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 129. [2025-01-09 02:58:11,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.03125) internal successors, (132), 128 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:11,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2025-01-09 02:58:11,967 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 124 [2025-01-09 02:58:11,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:11,968 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2025-01-09 02:58:11,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.581818181818182) internal successors, (197), 55 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:11,968 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2025-01-09 02:58:11,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-01-09 02:58:11,968 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:11,969 INFO L218 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:11,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:12,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:12,173 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:12,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:12,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1321689170, now seen corresponding path program 21 times [2025-01-09 02:58:12,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:12,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318313456] [2025-01-09 02:58:12,174 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:58:12,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:12,181 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 127 statements into 18 equivalence classes. [2025-01-09 02:58:12,198 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) and asserted 127 of 127 statements. [2025-01-09 02:58:12,198 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2025-01-09 02:58:12,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:12,509 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 392 proven. 562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:12,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:12,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318313456] [2025-01-09 02:58:12,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318313456] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:12,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458392898] [2025-01-09 02:58:12,510 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:58:12,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:12,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:12,512 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:12,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-09 02:58:12,569 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 127 statements into 18 equivalence classes. [2025-01-09 02:58:12,615 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) and asserted 127 of 127 statements. [2025-01-09 02:58:12,615 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2025-01-09 02:58:12,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:12,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-01-09 02:58:12,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:12,735 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 442 proven. 512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:12,736 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:13,031 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 442 proven. 512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:13,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458392898] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:13,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:13,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 24 [2025-01-09 02:58:13,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780832319] [2025-01-09 02:58:13,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:13,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-09 02:58:13,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:13,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-09 02:58:13,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=333, Unknown=0, NotChecked=0, Total=552 [2025-01-09 02:58:13,033 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:13,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:13,229 INFO L93 Difference]: Finished difference Result 147 states and 151 transitions. [2025-01-09 02:58:13,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-01-09 02:58:13,229 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2025-01-09 02:58:13,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:13,234 INFO L225 Difference]: With dead ends: 147 [2025-01-09 02:58:13,234 INFO L226 Difference]: Without dead ends: 145 [2025-01-09 02:58:13,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 234 SyntacticMatches, 33 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=633, Invalid=1089, Unknown=0, NotChecked=0, Total=1722 [2025-01-09 02:58:13,235 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 11 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:13,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 289 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:13,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2025-01-09 02:58:13,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 137. [2025-01-09 02:58:13,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.0294117647058822) internal successors, (140), 136 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:13,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 140 transitions. [2025-01-09 02:58:13,244 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 140 transitions. Word has length 127 [2025-01-09 02:58:13,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:13,244 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 140 transitions. [2025-01-09 02:58:13,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:13,244 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 140 transitions. [2025-01-09 02:58:13,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-01-09 02:58:13,244 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:13,245 INFO L218 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:13,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:13,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-01-09 02:58:13,449 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:13,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:13,453 INFO L85 PathProgramCache]: Analyzing trace with hash 249098772, now seen corresponding path program 22 times [2025-01-09 02:58:13,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:13,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879302195] [2025-01-09 02:58:13,453 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:58:13,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:13,460 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 135 statements into 2 equivalence classes. [2025-01-09 02:58:13,480 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 95 of 135 statements. [2025-01-09 02:58:13,480 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 02:58:13,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:14,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 544 proven. 546 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:14,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:14,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879302195] [2025-01-09 02:58:14,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879302195] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:14,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411845975] [2025-01-09 02:58:14,442 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:58:14,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:14,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:14,444 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:14,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-01-09 02:58:14,501 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 135 statements into 2 equivalence classes. [2025-01-09 02:58:14,528 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 95 of 135 statements. [2025-01-09 02:58:14,529 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 02:58:14,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:14,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-01-09 02:58:14,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:15,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 648 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:15,196 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 648 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:15,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411845975] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:15,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:15,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 39, 39] total 64 [2025-01-09 02:58:15,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836684533] [2025-01-09 02:58:15,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:15,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-01-09 02:58:15,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:15,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-01-09 02:58:15,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=870, Invalid=3162, Unknown=0, NotChecked=0, Total=4032 [2025-01-09 02:58:15,687 INFO L87 Difference]: Start difference. First operand 137 states and 140 transitions. Second operand has 64 states, 64 states have (on average 3.5625) internal successors, (228), 64 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:16,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:16,766 INFO L93 Difference]: Finished difference Result 370 states and 413 transitions. [2025-01-09 02:58:16,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-01-09 02:58:16,767 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.5625) internal successors, (228), 64 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2025-01-09 02:58:16,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:16,768 INFO L225 Difference]: With dead ends: 370 [2025-01-09 02:58:16,768 INFO L226 Difference]: Without dead ends: 220 [2025-01-09 02:58:16,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 233 SyntacticMatches, 33 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5085 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2813, Invalid=12193, Unknown=0, NotChecked=0, Total=15006 [2025-01-09 02:58:16,770 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 608 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:16,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 543 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 02:58:16,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2025-01-09 02:58:16,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 143. [2025-01-09 02:58:16,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.028169014084507) internal successors, (146), 142 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:16,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 146 transitions. [2025-01-09 02:58:16,776 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 146 transitions. Word has length 135 [2025-01-09 02:58:16,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:16,776 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 146 transitions. [2025-01-09 02:58:16,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.5625) internal successors, (228), 64 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:16,776 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 146 transitions. [2025-01-09 02:58:16,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-01-09 02:58:16,777 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:16,777 INFO L218 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:16,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:16,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-01-09 02:58:16,977 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:16,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:16,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1484267380, now seen corresponding path program 23 times [2025-01-09 02:58:16,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:16,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254693868] [2025-01-09 02:58:16,978 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:58:16,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:16,985 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 141 statements into 20 equivalence classes. [2025-01-09 02:58:17,006 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) and asserted 141 of 141 statements. [2025-01-09 02:58:17,007 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2025-01-09 02:58:17,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:17,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 551 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:17,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:17,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254693868] [2025-01-09 02:58:17,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254693868] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:17,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485441659] [2025-01-09 02:58:17,430 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:58:17,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:17,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:17,434 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:17,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-01-09 02:58:17,496 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 141 statements into 20 equivalence classes. [2025-01-09 02:58:17,546 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) and asserted 141 of 141 statements. [2025-01-09 02:58:17,546 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2025-01-09 02:58:17,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:17,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-01-09 02:58:17,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 551 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:17,669 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:18,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 551 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:18,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485441659] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:18,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:18,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 25 [2025-01-09 02:58:18,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130591953] [2025-01-09 02:58:18,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:18,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-09 02:58:18,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:18,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-09 02:58:18,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=342, Unknown=0, NotChecked=0, Total=600 [2025-01-09 02:58:18,025 INFO L87 Difference]: Start difference. First operand 143 states and 146 transitions. Second operand has 25 states, 25 states have (on average 6.32) internal successors, (158), 25 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:18,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:18,248 INFO L93 Difference]: Finished difference Result 161 states and 165 transitions. [2025-01-09 02:58:18,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-01-09 02:58:18,248 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.32) internal successors, (158), 25 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2025-01-09 02:58:18,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:18,249 INFO L225 Difference]: With dead ends: 161 [2025-01-09 02:58:18,249 INFO L226 Difference]: Without dead ends: 159 [2025-01-09 02:58:18,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 260 SyntacticMatches, 38 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=758, Invalid=1222, Unknown=0, NotChecked=0, Total=1980 [2025-01-09 02:58:18,250 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 16 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:18,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 322 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:18,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2025-01-09 02:58:18,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 151. [2025-01-09 02:58:18,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.0266666666666666) internal successors, (154), 150 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:18,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 154 transitions. [2025-01-09 02:58:18,255 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 154 transitions. Word has length 141 [2025-01-09 02:58:18,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:18,255 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 154 transitions. [2025-01-09 02:58:18,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.32) internal successors, (158), 25 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:18,255 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 154 transitions. [2025-01-09 02:58:18,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-01-09 02:58:18,256 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:18,256 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:18,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:18,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-01-09 02:58:18,461 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:18,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:18,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1491645478, now seen corresponding path program 24 times [2025-01-09 02:58:18,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:18,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096112377] [2025-01-09 02:58:18,462 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:58:18,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:18,472 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 149 statements into 21 equivalence classes. [2025-01-09 02:58:18,505 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) and asserted 149 of 149 statements. [2025-01-09 02:58:18,506 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2025-01-09 02:58:18,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:19,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1351 backedges. 743 proven. 608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:19,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:19,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096112377] [2025-01-09 02:58:19,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096112377] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:19,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653114454] [2025-01-09 02:58:19,255 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:58:19,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:19,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:19,257 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:19,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-01-09 02:58:19,324 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 149 statements into 21 equivalence classes. [2025-01-09 02:58:19,379 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) and asserted 149 of 149 statements. [2025-01-09 02:58:19,379 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2025-01-09 02:58:19,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:19,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-01-09 02:58:19,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:20,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1351 backedges. 800 proven. 551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:20,144 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:20,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1351 backedges. 800 proven. 551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:20,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653114454] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:20,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:20,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 68 [2025-01-09 02:58:20,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882619956] [2025-01-09 02:58:20,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:20,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2025-01-09 02:58:20,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:20,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2025-01-09 02:58:20,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1060, Invalid=3496, Unknown=0, NotChecked=0, Total=4556 [2025-01-09 02:58:20,724 INFO L87 Difference]: Start difference. First operand 151 states and 154 transitions. Second operand has 68 states, 68 states have (on average 3.6470588235294117) internal successors, (248), 68 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:21,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:21,489 INFO L93 Difference]: Finished difference Result 408 states and 455 transitions. [2025-01-09 02:58:21,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2025-01-09 02:58:21,490 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.6470588235294117) internal successors, (248), 68 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2025-01-09 02:58:21,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:21,491 INFO L225 Difference]: With dead ends: 408 [2025-01-09 02:58:21,491 INFO L226 Difference]: Without dead ends: 242 [2025-01-09 02:58:21,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 236 SyntacticMatches, 37 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3889 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2886, Invalid=8886, Unknown=0, NotChecked=0, Total=11772 [2025-01-09 02:58:21,493 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 277 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:21,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 449 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:58:21,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2025-01-09 02:58:21,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 157. [2025-01-09 02:58:21,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.0256410256410255) internal successors, (160), 156 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:21,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 160 transitions. [2025-01-09 02:58:21,500 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 160 transitions. Word has length 149 [2025-01-09 02:58:21,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:21,500 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 160 transitions. [2025-01-09 02:58:21,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.6470588235294117) internal successors, (248), 68 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:21,500 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 160 transitions. [2025-01-09 02:58:21,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-01-09 02:58:21,501 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:21,501 INFO L218 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:21,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-01-09 02:58:21,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-01-09 02:58:21,705 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:21,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:21,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1919652154, now seen corresponding path program 25 times [2025-01-09 02:58:21,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:21,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478559444] [2025-01-09 02:58:21,706 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:58:21,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:21,714 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-01-09 02:58:21,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-01-09 02:58:21,726 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:58:21,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:22,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 610 proven. 862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:22,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:22,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478559444] [2025-01-09 02:58:22,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478559444] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:22,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625733618] [2025-01-09 02:58:22,179 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:58:22,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:22,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:22,182 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:22,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-01-09 02:58:22,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-01-09 02:58:22,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-01-09 02:58:22,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:58:22,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:22,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-01-09 02:58:22,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:22,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 672 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:22,446 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:23,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 672 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:23,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625733618] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:23,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:23,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 28 [2025-01-09 02:58:23,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642201478] [2025-01-09 02:58:23,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:23,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-09 02:58:23,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:23,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-09 02:58:23,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=447, Unknown=0, NotChecked=0, Total=756 [2025-01-09 02:58:23,020 INFO L87 Difference]: Start difference. First operand 157 states and 160 transitions. Second operand has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 28 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:23,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:23,262 INFO L93 Difference]: Finished difference Result 175 states and 179 transitions. [2025-01-09 02:58:23,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-01-09 02:58:23,262 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 28 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2025-01-09 02:58:23,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:23,263 INFO L225 Difference]: With dead ends: 175 [2025-01-09 02:58:23,263 INFO L226 Difference]: Without dead ends: 173 [2025-01-09 02:58:23,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 285 SyntacticMatches, 42 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=903, Invalid=1547, Unknown=0, NotChecked=0, Total=2450 [2025-01-09 02:58:23,264 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 16 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:23,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 308 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:23,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2025-01-09 02:58:23,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 165. [2025-01-09 02:58:23,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.024390243902439) internal successors, (168), 164 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:23,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 168 transitions. [2025-01-09 02:58:23,271 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 168 transitions. Word has length 155 [2025-01-09 02:58:23,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:23,271 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 168 transitions. [2025-01-09 02:58:23,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 28 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:23,271 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 168 transitions. [2025-01-09 02:58:23,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-01-09 02:58:23,271 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:23,271 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:23,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-01-09 02:58:23,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-01-09 02:58:23,476 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:23,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:23,477 INFO L85 PathProgramCache]: Analyzing trace with hash -551008, now seen corresponding path program 26 times [2025-01-09 02:58:23,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:23,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264000884] [2025-01-09 02:58:23,477 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:58:23,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:23,485 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 163 statements into 2 equivalence classes. [2025-01-09 02:58:23,496 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 163 of 163 statements. [2025-01-09 02:58:23,500 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:58:23,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:24,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 905 proven. 735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:24,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:24,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264000884] [2025-01-09 02:58:24,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264000884] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:24,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436497023] [2025-01-09 02:58:24,404 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:58:24,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:24,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:24,405 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:24,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-01-09 02:58:24,486 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 163 statements into 2 equivalence classes. [2025-01-09 02:58:24,530 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 163 of 163 statements. [2025-01-09 02:58:24,530 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:58:24,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:24,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-01-09 02:58:24,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:25,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 966 proven. 672 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 02:58:25,397 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:25,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 966 proven. 672 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 02:58:25,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436497023] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:25,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:25,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 71 [2025-01-09 02:58:25,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497214269] [2025-01-09 02:58:25,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:25,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2025-01-09 02:58:25,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:25,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2025-01-09 02:58:25,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1131, Invalid=3839, Unknown=0, NotChecked=0, Total=4970 [2025-01-09 02:58:25,996 INFO L87 Difference]: Start difference. First operand 165 states and 168 transitions. Second operand has 71 states, 71 states have (on average 3.6619718309859155) internal successors, (260), 71 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:26,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:26,495 INFO L93 Difference]: Finished difference Result 350 states and 398 transitions. [2025-01-09 02:58:26,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-01-09 02:58:26,496 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.6619718309859155) internal successors, (260), 71 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2025-01-09 02:58:26,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:26,501 INFO L225 Difference]: With dead ends: 350 [2025-01-09 02:58:26,502 INFO L226 Difference]: Without dead ends: 257 [2025-01-09 02:58:26,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 260 SyntacticMatches, 42 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3187 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2145, Invalid=6411, Unknown=0, NotChecked=0, Total=8556 [2025-01-09 02:58:26,507 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 238 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:26,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 572 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:58:26,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2025-01-09 02:58:26,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 168. [2025-01-09 02:58:26,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.0239520958083832) internal successors, (171), 167 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 171 transitions. [2025-01-09 02:58:26,523 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 171 transitions. Word has length 163 [2025-01-09 02:58:26,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:26,523 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 171 transitions. [2025-01-09 02:58:26,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.6619718309859155) internal successors, (260), 71 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:26,523 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 171 transitions. [2025-01-09 02:58:26,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-01-09 02:58:26,524 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:26,524 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:26,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:26,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-01-09 02:58:26,725 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:26,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:26,725 INFO L85 PathProgramCache]: Analyzing trace with hash -2108065863, now seen corresponding path program 27 times [2025-01-09 02:58:26,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:26,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986100717] [2025-01-09 02:58:26,726 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:58:26,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:26,745 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 166 statements into 23 equivalence classes. [2025-01-09 02:58:26,801 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) and asserted 166 of 166 statements. [2025-01-09 02:58:26,805 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2025-01-09 02:58:26,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:28,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 905 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:28,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:28,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986100717] [2025-01-09 02:58:28,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986100717] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:28,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007862593] [2025-01-09 02:58:28,023 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:58:28,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:28,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:28,025 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:28,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-01-09 02:58:28,111 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 166 statements into 23 equivalence classes. [2025-01-09 02:58:28,178 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) and asserted 166 of 166 statements. [2025-01-09 02:58:28,178 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2025-01-09 02:58:28,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:28,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-01-09 02:58:28,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:29,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 968 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:29,069 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:29,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 968 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:29,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007862593] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:29,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:29,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 73 [2025-01-09 02:58:29,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173339511] [2025-01-09 02:58:29,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:29,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2025-01-09 02:58:29,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:29,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2025-01-09 02:58:29,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1203, Invalid=4053, Unknown=0, NotChecked=0, Total=5256 [2025-01-09 02:58:29,764 INFO L87 Difference]: Start difference. First operand 168 states and 171 transitions. Second operand has 73 states, 73 states have (on average 3.6027397260273974) internal successors, (263), 73 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:30,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:30,388 INFO L93 Difference]: Finished difference Result 359 states and 409 transitions. [2025-01-09 02:58:30,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-01-09 02:58:30,388 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 3.6027397260273974) internal successors, (263), 73 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2025-01-09 02:58:30,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:30,389 INFO L225 Difference]: With dead ends: 359 [2025-01-09 02:58:30,389 INFO L226 Difference]: Without dead ends: 264 [2025-01-09 02:58:30,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 263 SyntacticMatches, 44 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3380 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2309, Invalid=6811, Unknown=0, NotChecked=0, Total=9120 [2025-01-09 02:58:30,390 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 253 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:30,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 545 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 02:58:30,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2025-01-09 02:58:30,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 171. [2025-01-09 02:58:30,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.0235294117647058) internal successors, (174), 170 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:30,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 174 transitions. [2025-01-09 02:58:30,404 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 174 transitions. Word has length 166 [2025-01-09 02:58:30,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:30,404 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 174 transitions. [2025-01-09 02:58:30,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 3.6027397260273974) internal successors, (263), 73 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:30,404 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 174 transitions. [2025-01-09 02:58:30,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-01-09 02:58:30,404 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:30,405 INFO L218 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:30,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-01-09 02:58:30,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:30,605 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:30,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:30,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1043789056, now seen corresponding path program 28 times [2025-01-09 02:58:30,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:30,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262344575] [2025-01-09 02:58:30,606 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:58:30,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:30,616 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 169 statements into 2 equivalence classes. [2025-01-09 02:58:30,634 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 169 of 169 statements. [2025-01-09 02:58:30,634 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:58:30,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:31,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 805 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:31,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:31,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262344575] [2025-01-09 02:58:31,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262344575] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:31,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349698935] [2025-01-09 02:58:31,236 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:58:31,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:31,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:31,238 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:31,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-01-09 02:58:31,332 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 169 statements into 2 equivalence classes. [2025-01-09 02:58:31,410 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 169 of 169 statements. [2025-01-09 02:58:31,410 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:58:31,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:31,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-01-09 02:58:31,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:31,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 805 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:31,597 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:32,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 805 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:32,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349698935] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:32,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:32,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 29 [2025-01-09 02:58:32,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212355699] [2025-01-09 02:58:32,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:32,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 02:58:32,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:32,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 02:58:32,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=456, Unknown=0, NotChecked=0, Total=812 [2025-01-09 02:58:32,066 INFO L87 Difference]: Start difference. First operand 171 states and 174 transitions. Second operand has 29 states, 29 states have (on average 6.413793103448276) internal successors, (186), 29 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:32,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:32,351 INFO L93 Difference]: Finished difference Result 189 states and 193 transitions. [2025-01-09 02:58:32,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-01-09 02:58:32,351 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.413793103448276) internal successors, (186), 29 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2025-01-09 02:58:32,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:32,352 INFO L225 Difference]: With dead ends: 189 [2025-01-09 02:58:32,352 INFO L226 Difference]: Without dead ends: 187 [2025-01-09 02:58:32,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 313 SyntacticMatches, 45 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1052, Invalid=1704, Unknown=0, NotChecked=0, Total=2756 [2025-01-09 02:58:32,353 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 11 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:32,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 365 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:32,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2025-01-09 02:58:32,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 179. [2025-01-09 02:58:32,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.0224719101123596) internal successors, (182), 178 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:32,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 182 transitions. [2025-01-09 02:58:32,360 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 182 transitions. Word has length 169 [2025-01-09 02:58:32,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:32,364 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 182 transitions. [2025-01-09 02:58:32,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.413793103448276) internal successors, (186), 29 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:32,364 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 182 transitions. [2025-01-09 02:58:32,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-01-09 02:58:32,364 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:32,364 INFO L218 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:32,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-01-09 02:58:32,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:32,565 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:32,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:32,565 INFO L85 PathProgramCache]: Analyzing trace with hash -190982810, now seen corresponding path program 29 times [2025-01-09 02:58:32,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:32,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666486128] [2025-01-09 02:58:32,565 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:58:32,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:32,582 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 177 statements into 25 equivalence classes. [2025-01-09 02:58:32,611 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) and asserted 177 of 177 statements. [2025-01-09 02:58:32,611 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2025-01-09 02:58:32,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:33,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1957 backedges. 1152 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:33,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:33,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666486128] [2025-01-09 02:58:33,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666486128] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:33,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141098099] [2025-01-09 02:58:33,562 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:58:33,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:33,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:33,564 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:33,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-01-09 02:58:33,652 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 177 statements into 25 equivalence classes. [2025-01-09 02:58:33,715 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) and asserted 177 of 177 statements. [2025-01-09 02:58:33,716 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2025-01-09 02:58:33,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:33,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-01-09 02:58:33,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:34,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1957 backedges. 1152 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:34,642 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:35,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1957 backedges. 1152 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:35,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141098099] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:35,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:35,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 78 [2025-01-09 02:58:35,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581456358] [2025-01-09 02:58:35,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:35,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2025-01-09 02:58:35,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:35,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2025-01-09 02:58:35,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1428, Invalid=4578, Unknown=0, NotChecked=0, Total=6006 [2025-01-09 02:58:35,380 INFO L87 Difference]: Start difference. First operand 179 states and 182 transitions. Second operand has 78 states, 78 states have (on average 3.6538461538461537) internal successors, (285), 78 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:36,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:36,215 INFO L93 Difference]: Finished difference Result 484 states and 539 transitions. [2025-01-09 02:58:36,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2025-01-09 02:58:36,215 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 3.6538461538461537) internal successors, (285), 78 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2025-01-09 02:58:36,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:36,216 INFO L225 Difference]: With dead ends: 484 [2025-01-09 02:58:36,216 INFO L226 Difference]: Without dead ends: 286 [2025-01-09 02:58:36,219 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 281 SyntacticMatches, 46 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5124 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4024, Invalid=11978, Unknown=0, NotChecked=0, Total=16002 [2025-01-09 02:58:36,219 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 377 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:36,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 615 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 02:58:36,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2025-01-09 02:58:36,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 185. [2025-01-09 02:58:36,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.0217391304347827) internal successors, (188), 184 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:36,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 188 transitions. [2025-01-09 02:58:36,228 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 188 transitions. Word has length 177 [2025-01-09 02:58:36,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:36,228 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 188 transitions. [2025-01-09 02:58:36,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 3.6538461538461537) internal successors, (285), 78 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:36,229 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 188 transitions. [2025-01-09 02:58:36,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2025-01-09 02:58:36,229 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:36,229 INFO L218 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:36,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-01-09 02:58:36,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:36,430 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:36,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:36,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1082018502, now seen corresponding path program 30 times [2025-01-09 02:58:36,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:36,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378145653] [2025-01-09 02:58:36,430 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:58:36,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:36,440 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 183 statements into 26 equivalence classes. [2025-01-09 02:58:36,466 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) and asserted 183 of 183 statements. [2025-01-09 02:58:36,466 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2025-01-09 02:58:36,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:37,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 876 proven. 1226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:37,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:37,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378145653] [2025-01-09 02:58:37,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378145653] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:37,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913827107] [2025-01-09 02:58:37,053 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:58:37,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:37,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:37,056 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:37,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-01-09 02:58:37,142 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 183 statements into 26 equivalence classes. [2025-01-09 02:58:37,210 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) and asserted 183 of 183 statements. [2025-01-09 02:58:37,210 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2025-01-09 02:58:37,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:37,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-01-09 02:58:37,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:37,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 950 proven. 1152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:37,421 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:38,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 950 proven. 1152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:38,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913827107] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:38,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:38,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 32 [2025-01-09 02:58:38,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46029113] [2025-01-09 02:58:38,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:38,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-01-09 02:58:38,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:38,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-01-09 02:58:38,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=577, Unknown=0, NotChecked=0, Total=992 [2025-01-09 02:58:38,011 INFO L87 Difference]: Start difference. First operand 185 states and 188 transitions. Second operand has 32 states, 32 states have (on average 6.5) internal successors, (208), 32 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:38,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:38,276 INFO L93 Difference]: Finished difference Result 203 states and 207 transitions. [2025-01-09 02:58:38,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-01-09 02:58:38,276 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.5) internal successors, (208), 32 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2025-01-09 02:58:38,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:38,277 INFO L225 Difference]: With dead ends: 203 [2025-01-09 02:58:38,277 INFO L226 Difference]: Without dead ends: 201 [2025-01-09 02:58:38,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 338 SyntacticMatches, 49 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1562 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1221, Invalid=2085, Unknown=0, NotChecked=0, Total=3306 [2025-01-09 02:58:38,278 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 14 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:38,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 412 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:38,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2025-01-09 02:58:38,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 193. [2025-01-09 02:58:38,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.0208333333333333) internal successors, (196), 192 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:38,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 196 transitions. [2025-01-09 02:58:38,288 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 196 transitions. Word has length 183 [2025-01-09 02:58:38,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:38,288 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 196 transitions. [2025-01-09 02:58:38,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.5) internal successors, (208), 32 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:38,288 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 196 transitions. [2025-01-09 02:58:38,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2025-01-09 02:58:38,289 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:38,290 INFO L218 NwaCegarLoop]: trace histogram [27, 26, 26, 26, 26, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:38,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-01-09 02:58:38,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-01-09 02:58:38,494 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:38,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:38,495 INFO L85 PathProgramCache]: Analyzing trace with hash 632161580, now seen corresponding path program 31 times [2025-01-09 02:58:38,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:38,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281129924] [2025-01-09 02:58:38,495 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:58:38,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:38,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-01-09 02:58:38,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-01-09 02:58:38,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:58:38,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:39,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 1277 proven. 1025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:39,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:39,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281129924] [2025-01-09 02:58:39,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281129924] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:39,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508186961] [2025-01-09 02:58:39,534 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:58:39,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:39,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:39,536 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:39,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-01-09 02:58:39,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-01-09 02:58:39,670 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-01-09 02:58:39,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:58:39,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:39,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-01-09 02:58:39,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:40,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 1350 proven. 950 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 02:58:40,701 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:41,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 1350 proven. 950 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 02:58:41,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508186961] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:41,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:41,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 54] total 83 [2025-01-09 02:58:41,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583081349] [2025-01-09 02:58:41,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:41,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2025-01-09 02:58:41,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:41,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2025-01-09 02:58:41,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1543, Invalid=5263, Unknown=0, NotChecked=0, Total=6806 [2025-01-09 02:58:41,533 INFO L87 Difference]: Start difference. First operand 193 states and 196 transitions. Second operand has 83 states, 83 states have (on average 3.6626506024096384) internal successors, (304), 83 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:42,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:42,266 INFO L93 Difference]: Finished difference Result 410 states and 466 transitions. [2025-01-09 02:58:42,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2025-01-09 02:58:42,266 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 3.6626506024096384) internal successors, (304), 83 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2025-01-09 02:58:42,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:42,273 INFO L225 Difference]: With dead ends: 410 [2025-01-09 02:58:42,273 INFO L226 Difference]: Without dead ends: 301 [2025-01-09 02:58:42,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 304 SyntacticMatches, 50 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4395 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2949, Invalid=8823, Unknown=0, NotChecked=0, Total=11772 [2025-01-09 02:58:42,274 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 307 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:42,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 640 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 02:58:42,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2025-01-09 02:58:42,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 196. [2025-01-09 02:58:42,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.0205128205128204) internal successors, (199), 195 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:42,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 199 transitions. [2025-01-09 02:58:42,292 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 199 transitions. Word has length 191 [2025-01-09 02:58:42,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:42,292 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 199 transitions. [2025-01-09 02:58:42,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 3.6626506024096384) internal successors, (304), 83 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:42,292 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 199 transitions. [2025-01-09 02:58:42,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2025-01-09 02:58:42,293 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:42,293 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:42,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-01-09 02:58:42,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2025-01-09 02:58:42,497 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:42,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:42,497 INFO L85 PathProgramCache]: Analyzing trace with hash 760034757, now seen corresponding path program 32 times [2025-01-09 02:58:42,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:42,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584376801] [2025-01-09 02:58:42,499 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:58:42,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:42,520 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 194 statements into 2 equivalence classes. [2025-01-09 02:58:42,552 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 194 of 194 statements. [2025-01-09 02:58:42,552 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:58:42,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:43,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 1277 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:43,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:43,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584376801] [2025-01-09 02:58:43,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584376801] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:43,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750940859] [2025-01-09 02:58:43,843 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:58:43,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:43,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:43,845 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:43,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-01-09 02:58:43,934 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 194 statements into 2 equivalence classes. [2025-01-09 02:58:43,983 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 194 of 194 statements. [2025-01-09 02:58:43,984 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:58:43,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:43,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-01-09 02:58:43,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:45,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 1352 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:45,143 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:46,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 1352 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:46,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750940859] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:46,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:46,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 85 [2025-01-09 02:58:46,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976245209] [2025-01-09 02:58:46,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:46,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2025-01-09 02:58:46,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:46,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2025-01-09 02:58:46,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1627, Invalid=5513, Unknown=0, NotChecked=0, Total=7140 [2025-01-09 02:58:46,042 INFO L87 Difference]: Start difference. First operand 196 states and 199 transitions. Second operand has 85 states, 85 states have (on average 3.611764705882353) internal successors, (307), 85 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:46,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:46,751 INFO L93 Difference]: Finished difference Result 419 states and 477 transitions. [2025-01-09 02:58:46,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-01-09 02:58:46,752 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 3.611764705882353) internal successors, (307), 85 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2025-01-09 02:58:46,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:46,753 INFO L225 Difference]: With dead ends: 419 [2025-01-09 02:58:46,753 INFO L226 Difference]: Without dead ends: 308 [2025-01-09 02:58:46,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 307 SyntacticMatches, 52 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4620 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3141, Invalid=9291, Unknown=0, NotChecked=0, Total=12432 [2025-01-09 02:58:46,754 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 316 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:46,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 530 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 02:58:46,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2025-01-09 02:58:46,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 199. [2025-01-09 02:58:46,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.02020202020202) internal successors, (202), 198 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:46,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 202 transitions. [2025-01-09 02:58:46,761 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 202 transitions. Word has length 194 [2025-01-09 02:58:46,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:46,762 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 202 transitions. [2025-01-09 02:58:46,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 3.611764705882353) internal successors, (307), 85 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:46,762 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 202 transitions. [2025-01-09 02:58:46,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2025-01-09 02:58:46,762 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:46,762 INFO L218 NwaCegarLoop]: trace histogram [28, 27, 27, 27, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:46,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:46,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-01-09 02:58:46,967 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:46,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:46,967 INFO L85 PathProgramCache]: Analyzing trace with hash 593859212, now seen corresponding path program 33 times [2025-01-09 02:58:46,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:46,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993597452] [2025-01-09 02:58:46,967 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:58:46,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:46,981 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 197 statements into 28 equivalence classes. [2025-01-09 02:58:47,044 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) and asserted 197 of 197 statements. [2025-01-09 02:58:47,044 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2025-01-09 02:58:47,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:47,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2459 backedges. 1027 proven. 1432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:47,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:47,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993597452] [2025-01-09 02:58:47,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993597452] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:47,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793913313] [2025-01-09 02:58:47,804 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:58:47,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:47,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:47,806 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:47,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-01-09 02:58:47,899 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 197 statements into 28 equivalence classes. [2025-01-09 02:58:47,976 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) and asserted 197 of 197 statements. [2025-01-09 02:58:47,976 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2025-01-09 02:58:47,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:47,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 57 conjuncts are in the unsatisfiable core [2025-01-09 02:58:47,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:48,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2459 backedges. 1107 proven. 1352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:48,145 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:48,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2459 backedges. 1107 proven. 1352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:48,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793913313] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:48,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:48,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 34 [2025-01-09 02:58:48,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909278788] [2025-01-09 02:58:48,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:48,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-01-09 02:58:48,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:48,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-01-09 02:58:48,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=648, Unknown=0, NotChecked=0, Total=1122 [2025-01-09 02:58:48,801 INFO L87 Difference]: Start difference. First operand 199 states and 202 transitions. Second operand has 34 states, 34 states have (on average 6.529411764705882) internal successors, (222), 34 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:49,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:49,153 INFO L93 Difference]: Finished difference Result 217 states and 221 transitions. [2025-01-09 02:58:49,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2025-01-09 02:58:49,153 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.529411764705882) internal successors, (222), 34 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2025-01-09 02:58:49,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:49,158 INFO L225 Difference]: With dead ends: 217 [2025-01-09 02:58:49,158 INFO L226 Difference]: Without dead ends: 215 [2025-01-09 02:58:49,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 363 SyntacticMatches, 54 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1823 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1398, Invalid=2384, Unknown=0, NotChecked=0, Total=3782 [2025-01-09 02:58:49,163 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 14 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:49,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 502 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:49,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2025-01-09 02:58:49,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 207. [2025-01-09 02:58:49,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.0194174757281553) internal successors, (210), 206 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:49,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 210 transitions. [2025-01-09 02:58:49,178 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 210 transitions. Word has length 197 [2025-01-09 02:58:49,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:49,178 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 210 transitions. [2025-01-09 02:58:49,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.529411764705882) internal successors, (222), 34 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:49,179 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 210 transitions. [2025-01-09 02:58:49,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2025-01-09 02:58:49,179 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:49,179 INFO L218 NwaCegarLoop]: trace histogram [29, 28, 28, 28, 28, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:49,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-01-09 02:58:49,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,34 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:49,380 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:49,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:49,380 INFO L85 PathProgramCache]: Analyzing trace with hash -649320718, now seen corresponding path program 34 times [2025-01-09 02:58:49,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:49,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629847138] [2025-01-09 02:58:49,380 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:58:49,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:49,394 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 205 statements into 2 equivalence classes. [2025-01-09 02:58:49,408 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 145 of 205 statements. [2025-01-09 02:58:49,409 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 02:58:49,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:50,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2675 backedges. 1568 proven. 1107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:50,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:50,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629847138] [2025-01-09 02:58:50,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629847138] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:50,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133043627] [2025-01-09 02:58:50,511 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:58:50,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:50,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:50,513 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:50,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-01-09 02:58:50,730 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 205 statements into 2 equivalence classes. [2025-01-09 02:58:50,775 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 145 of 205 statements. [2025-01-09 02:58:50,776 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 02:58:50,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:50,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 58 conjuncts are in the unsatisfiable core [2025-01-09 02:58:50,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:52,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2675 backedges. 1566 proven. 1107 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 02:58:52,064 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:53,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2675 backedges. 1566 proven. 1107 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 02:58:53,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133043627] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:53,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:53,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58, 58] total 87 [2025-01-09 02:58:53,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754301507] [2025-01-09 02:58:53,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:53,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2025-01-09 02:58:53,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:53,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2025-01-09 02:58:53,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1739, Invalid=5743, Unknown=0, NotChecked=0, Total=7482 [2025-01-09 02:58:53,006 INFO L87 Difference]: Start difference. First operand 207 states and 210 transitions. Second operand has 87 states, 87 states have (on average 3.6551724137931036) internal successors, (318), 87 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:53,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:53,788 INFO L93 Difference]: Finished difference Result 440 states and 500 transitions. [2025-01-09 02:58:53,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2025-01-09 02:58:53,788 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 3.6551724137931036) internal successors, (318), 87 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2025-01-09 02:58:53,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:53,789 INFO L225 Difference]: With dead ends: 440 [2025-01-09 02:58:53,789 INFO L226 Difference]: Without dead ends: 323 [2025-01-09 02:58:53,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 327 SyntacticMatches, 55 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4590 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3391, Invalid=9719, Unknown=0, NotChecked=0, Total=13110 [2025-01-09 02:58:53,790 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 328 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:53,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 580 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 02:58:53,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2025-01-09 02:58:53,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 210. [2025-01-09 02:58:53,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.0191387559808613) internal successors, (213), 209 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:53,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 213 transitions. [2025-01-09 02:58:53,798 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 213 transitions. Word has length 205 [2025-01-09 02:58:53,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:53,799 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 213 transitions. [2025-01-09 02:58:53,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 3.6551724137931036) internal successors, (318), 87 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:53,799 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 213 transitions. [2025-01-09 02:58:53,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2025-01-09 02:58:53,799 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:53,800 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:53,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-01-09 02:58:54,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-01-09 02:58:54,004 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:54,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:54,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1991890891, now seen corresponding path program 35 times [2025-01-09 02:58:54,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:54,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614484790] [2025-01-09 02:58:54,005 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:58:54,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:54,015 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 208 statements into 29 equivalence classes. [2025-01-09 02:58:54,047 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) and asserted 208 of 208 statements. [2025-01-09 02:58:54,048 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2025-01-09 02:58:54,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:54,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 1190 proven. 1568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:54,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:54,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614484790] [2025-01-09 02:58:54,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614484790] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:54,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345378629] [2025-01-09 02:58:54,807 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:58:54,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:54,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:54,811 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:54,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-01-09 02:58:54,921 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 208 statements into 29 equivalence classes. [2025-01-09 02:58:54,999 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) and asserted 208 of 208 statements. [2025-01-09 02:58:54,999 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2025-01-09 02:58:54,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:55,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 60 conjuncts are in the unsatisfiable core [2025-01-09 02:58:55,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:56,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 1568 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:56,721 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:58,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 1568 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:58,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345378629] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:58,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:58,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 60, 60] total 119 [2025-01-09 02:58:58,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405373751] [2025-01-09 02:58:58,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:58,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2025-01-09 02:58:58,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:58,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2025-01-09 02:58:58,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2294, Invalid=11748, Unknown=0, NotChecked=0, Total=14042 [2025-01-09 02:58:58,299 INFO L87 Difference]: Start difference. First operand 210 states and 213 transitions. Second operand has 119 states, 119 states have (on average 4.428571428571429) internal successors, (527), 119 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:02,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:02,471 INFO L93 Difference]: Finished difference Result 454 states and 517 transitions. [2025-01-09 02:59:02,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2025-01-09 02:59:02,472 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 4.428571428571429) internal successors, (527), 119 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2025-01-09 02:59:02,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:02,473 INFO L225 Difference]: With dead ends: 454 [2025-01-09 02:59:02,473 INFO L226 Difference]: Without dead ends: 335 [2025-01-09 02:59:02,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 357 SyntacticMatches, 29 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22264 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=10345, Invalid=58037, Unknown=0, NotChecked=0, Total=68382 [2025-01-09 02:59:02,477 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 731 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 2237 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 2452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 2237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:02,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 424 Invalid, 2452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 2237 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-09 02:59:02,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2025-01-09 02:59:02,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 217. [2025-01-09 02:59:02,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.0185185185185186) internal successors, (220), 216 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:02,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 220 transitions. [2025-01-09 02:59:02,487 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 220 transitions. Word has length 208 [2025-01-09 02:59:02,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:02,487 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 220 transitions. [2025-01-09 02:59:02,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 4.428571428571429) internal successors, (527), 119 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:02,487 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 220 transitions. [2025-01-09 02:59:02,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2025-01-09 02:59:02,488 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:02,488 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:59:02,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-01-09 02:59:02,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-01-09 02:59:02,688 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:02,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:02,689 INFO L85 PathProgramCache]: Analyzing trace with hash 382082117, now seen corresponding path program 36 times [2025-01-09 02:59:02,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:02,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933188111] [2025-01-09 02:59:02,689 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:59:02,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:02,699 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 215 statements into 30 equivalence classes. [2025-01-09 02:59:02,728 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) and asserted 215 of 215 statements. [2025-01-09 02:59:02,728 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) [2025-01-09 02:59:02,728 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:04,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 1598 proven. 1360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:04,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:04,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933188111] [2025-01-09 02:59:04,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933188111] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:04,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123443773] [2025-01-09 02:59:04,148 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:59:04,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:04,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:04,151 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:04,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-01-09 02:59:04,255 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 215 statements into 30 equivalence classes. [2025-01-09 02:59:04,337 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) and asserted 215 of 215 statements. [2025-01-09 02:59:04,337 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) [2025-01-09 02:59:04,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:04,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-01-09 02:59:04,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:05,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 1682 proven. 1276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:05,768 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:06,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 1682 proven. 1276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:06,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123443773] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:06,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:06,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 94 [2025-01-09 02:59:06,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935640747] [2025-01-09 02:59:06,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:06,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2025-01-09 02:59:06,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:06,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2025-01-09 02:59:06,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1987, Invalid=6755, Unknown=0, NotChecked=0, Total=8742 [2025-01-09 02:59:06,853 INFO L87 Difference]: Start difference. First operand 217 states and 220 transitions. Second operand has 94 states, 94 states have (on average 3.617021276595745) internal successors, (340), 94 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:07,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:07,804 INFO L93 Difference]: Finished difference Result 464 states and 528 transitions. [2025-01-09 02:59:07,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-01-09 02:59:07,804 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 3.617021276595745) internal successors, (340), 94 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2025-01-09 02:59:07,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:07,805 INFO L225 Difference]: With dead ends: 464 [2025-01-09 02:59:07,805 INFO L226 Difference]: Without dead ends: 341 [2025-01-09 02:59:07,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 340 SyntacticMatches, 58 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5676 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3849, Invalid=11403, Unknown=0, NotChecked=0, Total=15252 [2025-01-09 02:59:07,807 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 379 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:07,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 735 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 02:59:07,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2025-01-09 02:59:07,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 220. [2025-01-09 02:59:07,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.0182648401826484) internal successors, (223), 219 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:07,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 223 transitions. [2025-01-09 02:59:07,816 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 223 transitions. Word has length 215 [2025-01-09 02:59:07,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:07,816 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 223 transitions. [2025-01-09 02:59:07,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 3.617021276595745) internal successors, (340), 94 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:07,816 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 223 transitions. [2025-01-09 02:59:07,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2025-01-09 02:59:07,817 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:07,817 INFO L218 NwaCegarLoop]: trace histogram [31, 30, 30, 30, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:59:07,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2025-01-09 02:59:08,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-01-09 02:59:08,017 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:08,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:08,017 INFO L85 PathProgramCache]: Analyzing trace with hash 11751902, now seen corresponding path program 37 times [2025-01-09 02:59:08,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:08,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913899183] [2025-01-09 02:59:08,018 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:59:08,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:08,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 218 statements into 1 equivalence classes. [2025-01-09 02:59:08,072 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 218 of 218 statements. [2025-01-09 02:59:08,075 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:59:08,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:08,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3047 backedges. 1276 proven. 1771 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:08,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:08,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913899183] [2025-01-09 02:59:08,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913899183] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:08,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383305568] [2025-01-09 02:59:08,955 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:59:08,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:08,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:08,957 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:08,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-01-09 02:59:09,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 218 statements into 1 equivalence classes. [2025-01-09 02:59:09,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 218 of 218 statements. [2025-01-09 02:59:09,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:59:09,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:09,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-01-09 02:59:09,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3047 backedges. 1365 proven. 1682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:09,316 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:10,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3047 backedges. 1365 proven. 1682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:10,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383305568] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:10,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:10,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 37 [2025-01-09 02:59:10,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373553403] [2025-01-09 02:59:10,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:10,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-01-09 02:59:10,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:10,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-01-09 02:59:10,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=762, Unknown=0, NotChecked=0, Total=1332 [2025-01-09 02:59:10,076 INFO L87 Difference]: Start difference. First operand 220 states and 223 transitions. Second operand has 37 states, 37 states have (on average 6.5675675675675675) internal successors, (243), 37 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:10,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:10,480 INFO L93 Difference]: Finished difference Result 238 states and 242 transitions. [2025-01-09 02:59:10,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2025-01-09 02:59:10,480 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.5675675675675675) internal successors, (243), 37 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2025-01-09 02:59:10,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:10,481 INFO L225 Difference]: With dead ends: 238 [2025-01-09 02:59:10,481 INFO L226 Difference]: Without dead ends: 236 [2025-01-09 02:59:10,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 402 SyntacticMatches, 60 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2207 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1686, Invalid=2870, Unknown=0, NotChecked=0, Total=4556 [2025-01-09 02:59:10,482 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 19 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:10,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 457 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:59:10,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2025-01-09 02:59:10,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 228. [2025-01-09 02:59:10,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.0176211453744493) internal successors, (231), 227 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:10,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 231 transitions. [2025-01-09 02:59:10,490 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 231 transitions. Word has length 218 [2025-01-09 02:59:10,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:10,490 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 231 transitions. [2025-01-09 02:59:10,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.5675675675675675) internal successors, (243), 37 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:10,490 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 231 transitions. [2025-01-09 02:59:10,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2025-01-09 02:59:10,490 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:10,490 INFO L218 NwaCegarLoop]: trace histogram [32, 31, 31, 31, 31, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:59:10,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2025-01-09 02:59:10,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,38 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:10,691 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:10,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:10,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1504283580, now seen corresponding path program 38 times [2025-01-09 02:59:10,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:10,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885014815] [2025-01-09 02:59:10,692 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:59:10,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:10,703 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 226 statements into 2 equivalence classes. [2025-01-09 02:59:10,722 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 226 of 226 statements. [2025-01-09 02:59:10,723 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:59:10,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:12,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3287 backedges. 1832 proven. 1455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:12,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:12,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885014815] [2025-01-09 02:59:12,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885014815] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:12,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638356200] [2025-01-09 02:59:12,265 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:59:12,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:12,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:12,268 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:12,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-01-09 02:59:12,381 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 226 statements into 2 equivalence classes. [2025-01-09 02:59:12,443 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 226 of 226 statements. [2025-01-09 02:59:12,443 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:59:12,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:12,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-01-09 02:59:12,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3287 backedges. 1920 proven. 1365 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 02:59:13,975 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:15,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3287 backedges. 1920 proven. 1365 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 02:59:15,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638356200] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:15,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:15,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64, 64] total 98 [2025-01-09 02:59:15,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123866915] [2025-01-09 02:59:15,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:15,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2025-01-09 02:59:15,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:15,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2025-01-09 02:59:15,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2148, Invalid=7358, Unknown=0, NotChecked=0, Total=9506 [2025-01-09 02:59:15,222 INFO L87 Difference]: Start difference. First operand 228 states and 231 transitions. Second operand has 98 states, 98 states have (on average 3.663265306122449) internal successors, (359), 98 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:16,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:16,212 INFO L93 Difference]: Finished difference Result 485 states and 551 transitions. [2025-01-09 02:59:16,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2025-01-09 02:59:16,212 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 3.663265306122449) internal successors, (359), 98 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 226 [2025-01-09 02:59:16,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:16,213 INFO L225 Difference]: With dead ends: 485 [2025-01-09 02:59:16,213 INFO L226 Difference]: Without dead ends: 356 [2025-01-09 02:59:16,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 359 SyntacticMatches, 60 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6175 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=4134, Invalid=12378, Unknown=0, NotChecked=0, Total=16512 [2025-01-09 02:59:16,215 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 346 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:16,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 706 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 02:59:16,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2025-01-09 02:59:16,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 231. [2025-01-09 02:59:16,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.017391304347826) internal successors, (234), 230 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 234 transitions. [2025-01-09 02:59:16,224 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 234 transitions. Word has length 226 [2025-01-09 02:59:16,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:16,224 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 234 transitions. [2025-01-09 02:59:16,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 3.663265306122449) internal successors, (359), 98 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:16,225 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 234 transitions. [2025-01-09 02:59:16,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2025-01-09 02:59:16,225 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:16,225 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:59:16,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2025-01-09 02:59:16,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2025-01-09 02:59:16,430 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:16,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:16,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1766722293, now seen corresponding path program 39 times [2025-01-09 02:59:16,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:16,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698383372] [2025-01-09 02:59:16,431 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:59:16,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:16,442 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 229 statements into 32 equivalence classes. [2025-01-09 02:59:16,477 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) and asserted 229 of 229 statements. [2025-01-09 02:59:16,477 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2025-01-09 02:59:16,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:18,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 1832 proven. 1547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:18,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:18,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698383372] [2025-01-09 02:59:18,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698383372] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:18,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341336283] [2025-01-09 02:59:18,080 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:59:18,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:18,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:18,082 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:18,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2025-01-09 02:59:18,202 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 229 statements into 32 equivalence classes. [2025-01-09 02:59:18,291 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) and asserted 229 of 229 statements. [2025-01-09 02:59:18,291 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2025-01-09 02:59:18,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:18,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 66 conjuncts are in the unsatisfiable core [2025-01-09 02:59:18,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 1922 proven. 1457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:19,811 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:21,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 1922 proven. 1457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:21,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341336283] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:21,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:21,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 100 [2025-01-09 02:59:21,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966404493] [2025-01-09 02:59:21,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:21,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2025-01-09 02:59:21,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:21,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2025-01-09 02:59:21,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2247, Invalid=7653, Unknown=0, NotChecked=0, Total=9900 [2025-01-09 02:59:21,279 INFO L87 Difference]: Start difference. First operand 231 states and 234 transitions. Second operand has 100 states, 100 states have (on average 3.62) internal successors, (362), 100 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:22,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:22,423 INFO L93 Difference]: Finished difference Result 494 states and 562 transitions. [2025-01-09 02:59:22,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2025-01-09 02:59:22,423 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 3.62) internal successors, (362), 100 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2025-01-09 02:59:22,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:22,424 INFO L225 Difference]: With dead ends: 494 [2025-01-09 02:59:22,425 INFO L226 Difference]: Without dead ends: 363 [2025-01-09 02:59:22,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 362 SyntacticMatches, 62 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6440 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=4361, Invalid=12931, Unknown=0, NotChecked=0, Total=17292 [2025-01-09 02:59:22,427 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 394 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:22,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 796 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 02:59:22,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2025-01-09 02:59:22,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 234. [2025-01-09 02:59:22,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.0171673819742488) internal successors, (237), 233 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:22,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 237 transitions. [2025-01-09 02:59:22,442 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 237 transitions. Word has length 229 [2025-01-09 02:59:22,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:22,442 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 237 transitions. [2025-01-09 02:59:22,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 3.62) internal successors, (362), 100 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:22,443 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 237 transitions. [2025-01-09 02:59:22,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2025-01-09 02:59:22,443 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:22,444 INFO L218 NwaCegarLoop]: trace histogram [33, 32, 32, 32, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:59:22,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2025-01-09 02:59:22,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:22,646 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:22,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:22,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1057024740, now seen corresponding path program 40 times [2025-01-09 02:59:22,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:22,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435874608] [2025-01-09 02:59:22,646 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:59:22,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:22,658 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 232 statements into 2 equivalence classes. [2025-01-09 02:59:22,685 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 232 of 232 statements. [2025-01-09 02:59:22,688 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:59:22,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:23,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3474 backedges. 1552 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:23,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:23,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435874608] [2025-01-09 02:59:23,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435874608] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:23,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971854964] [2025-01-09 02:59:23,715 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:59:23,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:23,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:23,718 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:23,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2025-01-09 02:59:23,840 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 232 statements into 2 equivalence classes. [2025-01-09 02:59:23,901 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 232 of 232 statements. [2025-01-09 02:59:23,901 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:59:23,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:23,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 70 conjuncts are in the unsatisfiable core [2025-01-09 02:59:23,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:24,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3474 backedges. 1552 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:24,089 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:24,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3474 backedges. 1552 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:24,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971854964] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:24,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:24,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 38 [2025-01-09 02:59:24,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656394368] [2025-01-09 02:59:24,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:24,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-01-09 02:59:24,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:24,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-01-09 02:59:24,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=635, Invalid=771, Unknown=0, NotChecked=0, Total=1406 [2025-01-09 02:59:24,938 INFO L87 Difference]: Start difference. First operand 234 states and 237 transitions. Second operand has 38 states, 38 states have (on average 6.552631578947368) internal successors, (249), 38 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:25,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:25,356 INFO L93 Difference]: Finished difference Result 252 states and 256 transitions. [2025-01-09 02:59:25,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2025-01-09 02:59:25,357 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 6.552631578947368) internal successors, (249), 38 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2025-01-09 02:59:25,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:25,357 INFO L225 Difference]: With dead ends: 252 [2025-01-09 02:59:25,358 INFO L226 Difference]: Without dead ends: 250 [2025-01-09 02:59:25,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 430 SyntacticMatches, 63 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2208 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1889, Invalid=3081, Unknown=0, NotChecked=0, Total=4970 [2025-01-09 02:59:25,358 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 11 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:25,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 464 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:59:25,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2025-01-09 02:59:25,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 242. [2025-01-09 02:59:25,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 1.016597510373444) internal successors, (245), 241 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:25,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 245 transitions. [2025-01-09 02:59:25,367 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 245 transitions. Word has length 232 [2025-01-09 02:59:25,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:25,368 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 245 transitions. [2025-01-09 02:59:25,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 6.552631578947368) internal successors, (249), 38 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:25,368 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 245 transitions. [2025-01-09 02:59:25,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2025-01-09 02:59:25,368 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:25,368 INFO L218 NwaCegarLoop]: trace histogram [34, 33, 33, 33, 33, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:59:25,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2025-01-09 02:59:25,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2025-01-09 02:59:25,573 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:25,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:25,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1483364534, now seen corresponding path program 41 times [2025-01-09 02:59:25,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:25,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727282280] [2025-01-09 02:59:25,574 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:59:25,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:25,585 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 240 statements into 34 equivalence classes. [2025-01-09 02:59:25,630 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) and asserted 240 of 240 statements. [2025-01-09 02:59:25,630 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2025-01-09 02:59:25,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:27,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3730 backedges. 2178 proven. 1552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:27,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:27,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727282280] [2025-01-09 02:59:27,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727282280] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:27,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378580921] [2025-01-09 02:59:27,507 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:59:27,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:27,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:27,510 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:27,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2025-01-09 02:59:27,683 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 240 statements into 34 equivalence classes. [2025-01-09 02:59:27,791 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) and asserted 240 of 240 statements. [2025-01-09 02:59:27,791 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2025-01-09 02:59:27,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:27,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 69 conjuncts are in the unsatisfiable core [2025-01-09 02:59:27,798 INFO L279 TraceCheckSpWp]: Computing forward predicates...