./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-76.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/hardness-nfm22/hardness_operatoramount_amount500_file-76.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 8186639625ce393affc636d71862385ab5976ddbf9eeeac19c1ff9ee758a31c5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 14:50:14,392 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 14:50:14,433 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 14:50:14,436 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 14:50:14,437 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 14:50:14,452 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 14:50:14,453 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 14:50:14,453 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 14:50:14,454 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 14:50:14,454 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 14:50:14,454 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 14:50:14,455 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 14:50:14,455 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 14:50:14,455 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 14:50:14,455 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 14:50:14,455 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 14:50:14,456 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 14:50:14,456 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 14:50:14,456 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 14:50:14,456 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 14:50:14,456 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 14:50:14,456 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 14:50:14,456 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 14:50:14,456 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 14:50:14,456 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 14:50:14,456 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 14:50:14,457 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 14:50:14,457 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 14:50:14,457 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 14:50:14,457 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 14:50:14,457 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 14:50:14,457 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 14:50:14,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:50:14,457 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 14:50:14,458 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 14:50:14,458 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 14:50:14,458 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 14:50:14,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:50:14,458 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 14:50:14,458 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 14:50:14,458 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 14:50:14,458 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 14:50:14,458 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 14:50:14,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 14:50:14,459 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 14:50:14,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 14:50:14,459 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 14:50:14,459 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 14:50:14,459 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 -> 8186639625ce393affc636d71862385ab5976ddbf9eeeac19c1ff9ee758a31c5 [2025-01-09 14:50:14,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 14:50:14,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 14:50:14,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 14:50:14,686 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 14:50:14,686 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 14:50:14,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-76.i [2025-01-09 14:50:15,845 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/66f24982b/8526aecc28b2423ea73824352c60ed77/FLAGda14d4c60 [2025-01-09 14:50:16,138 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 14:50:16,139 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-76.i [2025-01-09 14:50:16,149 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/66f24982b/8526aecc28b2423ea73824352c60ed77/FLAGda14d4c60 [2025-01-09 14:50:16,161 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/66f24982b/8526aecc28b2423ea73824352c60ed77 [2025-01-09 14:50:16,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 14:50:16,164 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 14:50:16,166 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 14:50:16,166 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 14:50:16,169 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 14:50:16,170 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:50:16" (1/1) ... [2025-01-09 14:50:16,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d41fce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:50:16, skipping insertion in model container [2025-01-09 14:50:16,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:50:16" (1/1) ... [2025-01-09 14:50:16,204 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 14:50:16,297 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-76.i[916,929] [2025-01-09 14:50:16,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 14:50:16,469 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 14:50:16,478 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-76.i[916,929] [2025-01-09 14:50:16,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 14:50:16,561 INFO L204 MainTranslator]: Completed translation [2025-01-09 14:50:16,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:50:16 WrapperNode [2025-01-09 14:50:16,563 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 14:50:16,565 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 14:50:16,565 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 14:50:16,565 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 14:50:16,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:50:16" (1/1) ... [2025-01-09 14:50:16,593 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:50:16" (1/1) ... [2025-01-09 14:50:16,672 INFO L138 Inliner]: procedures = 26, calls = 108, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 811 [2025-01-09 14:50:16,672 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 14:50:16,673 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 14:50:16,673 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 14:50:16,674 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 14:50:16,680 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:50:16" (1/1) ... [2025-01-09 14:50:16,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:50:16" (1/1) ... [2025-01-09 14:50:16,701 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:50:16" (1/1) ... [2025-01-09 14:50:16,758 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 14:50:16,759 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:50:16" (1/1) ... [2025-01-09 14:50:16,759 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:50:16" (1/1) ... [2025-01-09 14:50:16,784 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:50:16" (1/1) ... [2025-01-09 14:50:16,788 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:50:16" (1/1) ... [2025-01-09 14:50:16,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:50:16" (1/1) ... [2025-01-09 14:50:16,799 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:50:16" (1/1) ... [2025-01-09 14:50:16,806 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:50:16" (1/1) ... [2025-01-09 14:50:16,818 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 14:50:16,819 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 14:50:16,819 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 14:50:16,819 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 14:50:16,820 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:50:16" (1/1) ... [2025-01-09 14:50:16,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:50:16,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:50:16,849 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 14:50:16,852 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 14:50:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 14:50:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 14:50:16,872 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 14:50:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 14:50:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 14:50:16,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 14:50:16,997 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 14:50:16,999 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 14:50:18,104 INFO L? ?]: Removed 73 outVars from TransFormulas that were not future-live. [2025-01-09 14:50:18,104 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 14:50:18,121 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 14:50:18,121 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 14:50:18,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:50:18 BoogieIcfgContainer [2025-01-09 14:50:18,122 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 14:50:18,127 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 14:50:18,127 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 14:50:18,130 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 14:50:18,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 02:50:16" (1/3) ... [2025-01-09 14:50:18,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14496660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:50:18, skipping insertion in model container [2025-01-09 14:50:18,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:50:16" (2/3) ... [2025-01-09 14:50:18,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14496660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:50:18, skipping insertion in model container [2025-01-09 14:50:18,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:50:18" (3/3) ... [2025-01-09 14:50:18,133 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-76.i [2025-01-09 14:50:18,144 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 14:50:18,147 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount500_file-76.i that has 2 procedures, 327 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 14:50:18,208 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 14:50:18,218 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;@5857932b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 14:50:18,218 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 14:50:18,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 327 states, 229 states have (on average 1.51528384279476) internal successors, (347), 230 states have internal predecessors, (347), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2025-01-09 14:50:18,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2025-01-09 14:50:18,250 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:50:18,251 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:50:18,251 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:50:18,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:50:18,255 INFO L85 PathProgramCache]: Analyzing trace with hash -569593513, now seen corresponding path program 1 times [2025-01-09 14:50:18,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:50:18,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396789030] [2025-01-09 14:50:18,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:50:18,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:50:18,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-01-09 14:50:18,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-01-09 14:50:18,450 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:50:18,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:50:18,908 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 17672 trivial. 0 not checked. [2025-01-09 14:50:18,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:50:18,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396789030] [2025-01-09 14:50:18,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396789030] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:50:18,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940147821] [2025-01-09 14:50:18,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:50:18,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:50:18,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:50:18,913 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 14:50:18,914 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 14:50:19,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-01-09 14:50:19,327 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-01-09 14:50:19,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:50:19,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:50:19,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 14:50:19,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:50:19,399 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 17672 trivial. 0 not checked. [2025-01-09 14:50:19,400 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 14:50:19,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940147821] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:50:19,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 14:50:19,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 14:50:19,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221929398] [2025-01-09 14:50:19,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:50:19,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 14:50:19,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:50:19,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 14:50:19,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 14:50:19,428 INFO L87 Difference]: Start difference. First operand has 327 states, 229 states have (on average 1.51528384279476) internal successors, (347), 230 states have internal predecessors, (347), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 2 states have call successors, (95) [2025-01-09 14:50:19,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:50:19,477 INFO L93 Difference]: Finished difference Result 648 states and 1164 transitions. [2025-01-09 14:50:19,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 14:50:19,479 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 2 states have call successors, (95) Word has length 622 [2025-01-09 14:50:19,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:50:19,485 INFO L225 Difference]: With dead ends: 648 [2025-01-09 14:50:19,485 INFO L226 Difference]: Without dead ends: 324 [2025-01-09 14:50:19,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 623 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 14:50:19,493 INFO L435 NwaCegarLoop]: 532 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, 532 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 14:50:19,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 14:50:19,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2025-01-09 14:50:19,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2025-01-09 14:50:19,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 227 states have (on average 1.5066079295154184) internal successors, (342), 227 states have internal predecessors, (342), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2025-01-09 14:50:19,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 532 transitions. [2025-01-09 14:50:19,555 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 532 transitions. Word has length 622 [2025-01-09 14:50:19,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:50:19,556 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 532 transitions. [2025-01-09 14:50:19,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 2 states have call successors, (95) [2025-01-09 14:50:19,556 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 532 transitions. [2025-01-09 14:50:19,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2025-01-09 14:50:19,568 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:50:19,569 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:50:19,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 14:50:19,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-09 14:50:19,773 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:50:19,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:50:19,774 INFO L85 PathProgramCache]: Analyzing trace with hash -597312811, now seen corresponding path program 1 times [2025-01-09 14:50:19,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:50:19,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429228833] [2025-01-09 14:50:19,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:50:19,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:50:19,827 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-01-09 14:50:19,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-01-09 14:50:19,948 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:50:19,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:50:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2025-01-09 14:50:20,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:50:20,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429228833] [2025-01-09 14:50:20,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429228833] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:50:20,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:50:20,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 14:50:20,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213488012] [2025-01-09 14:50:20,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:50:20,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 14:50:20,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:50:20,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 14:50:20,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:50:20,420 INFO L87 Difference]: Start difference. First operand 324 states and 532 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-01-09 14:50:20,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:50:20,571 INFO L93 Difference]: Finished difference Result 964 states and 1586 transitions. [2025-01-09 14:50:20,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 14:50:20,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 622 [2025-01-09 14:50:20,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:50:20,613 INFO L225 Difference]: With dead ends: 964 [2025-01-09 14:50:20,613 INFO L226 Difference]: Without dead ends: 643 [2025-01-09 14:50:20,614 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:50:20,617 INFO L435 NwaCegarLoop]: 519 mSDtfsCounter, 514 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 14:50:20,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 1028 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 14:50:20,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2025-01-09 14:50:20,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 386. [2025-01-09 14:50:20,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 289 states have (on average 1.5570934256055364) internal successors, (450), 289 states have internal predecessors, (450), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2025-01-09 14:50:20,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 640 transitions. [2025-01-09 14:50:20,658 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 640 transitions. Word has length 622 [2025-01-09 14:50:20,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:50:20,660 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 640 transitions. [2025-01-09 14:50:20,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-01-09 14:50:20,660 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 640 transitions. [2025-01-09 14:50:20,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2025-01-09 14:50:20,664 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:50:20,664 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:50:20,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 14:50:20,664 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:50:20,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:50:20,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1364261847, now seen corresponding path program 1 times [2025-01-09 14:50:20,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:50:20,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119862664] [2025-01-09 14:50:20,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:50:20,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:50:20,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-01-09 14:50:20,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-01-09 14:50:20,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:50:20,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:50:21,189 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2025-01-09 14:50:21,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:50:21,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119862664] [2025-01-09 14:50:21,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119862664] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:50:21,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:50:21,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 14:50:21,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407459869] [2025-01-09 14:50:21,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:50:21,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 14:50:21,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:50:21,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 14:50:21,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:50:21,195 INFO L87 Difference]: Start difference. First operand 386 states and 640 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-01-09 14:50:21,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:50:21,299 INFO L93 Difference]: Finished difference Result 1119 states and 1859 transitions. [2025-01-09 14:50:21,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 14:50:21,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 622 [2025-01-09 14:50:21,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:50:21,306 INFO L225 Difference]: With dead ends: 1119 [2025-01-09 14:50:21,306 INFO L226 Difference]: Without dead ends: 736 [2025-01-09 14:50:21,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:50:21,308 INFO L435 NwaCegarLoop]: 527 mSDtfsCounter, 475 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 14:50:21,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 1045 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 14:50:21,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2025-01-09 14:50:21,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 466. [2025-01-09 14:50:21,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 369 states have (on average 1.6097560975609757) internal successors, (594), 369 states have internal predecessors, (594), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2025-01-09 14:50:21,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 784 transitions. [2025-01-09 14:50:21,350 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 784 transitions. Word has length 622 [2025-01-09 14:50:21,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:50:21,352 INFO L471 AbstractCegarLoop]: Abstraction has 466 states and 784 transitions. [2025-01-09 14:50:21,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-01-09 14:50:21,353 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 784 transitions. [2025-01-09 14:50:21,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2025-01-09 14:50:21,358 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:50:21,358 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:50:21,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 14:50:21,358 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:50:21,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:50:21,359 INFO L85 PathProgramCache]: Analyzing trace with hash -558966187, now seen corresponding path program 1 times [2025-01-09 14:50:21,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:50:21,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620060508] [2025-01-09 14:50:21,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:50:21,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:50:21,405 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-01-09 14:50:21,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-01-09 14:50:21,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:50:21,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:50:22,526 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2025-01-09 14:50:22,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:50:22,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620060508] [2025-01-09 14:50:22,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620060508] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:50:22,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:50:22,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 14:50:22,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938048993] [2025-01-09 14:50:22,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:50:22,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 14:50:22,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:50:22,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 14:50:22,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 14:50:22,532 INFO L87 Difference]: Start difference. First operand 466 states and 784 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-01-09 14:50:22,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:50:22,896 INFO L93 Difference]: Finished difference Result 1394 states and 2350 transitions. [2025-01-09 14:50:22,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 14:50:22,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 622 [2025-01-09 14:50:22,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:50:22,907 INFO L225 Difference]: With dead ends: 1394 [2025-01-09 14:50:22,907 INFO L226 Difference]: Without dead ends: 931 [2025-01-09 14:50:22,910 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 14:50:22,912 INFO L435 NwaCegarLoop]: 716 mSDtfsCounter, 343 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 14:50:22,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 1755 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 14:50:22,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2025-01-09 14:50:22,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 929. [2025-01-09 14:50:22,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 736 states have (on average 1.611413043478261) internal successors, (1186), 736 states have internal predecessors, (1186), 190 states have call successors, (190), 2 states have call predecessors, (190), 2 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190) [2025-01-09 14:50:22,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1566 transitions. [2025-01-09 14:50:22,984 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1566 transitions. Word has length 622 [2025-01-09 14:50:22,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:50:22,986 INFO L471 AbstractCegarLoop]: Abstraction has 929 states and 1566 transitions. [2025-01-09 14:50:22,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-01-09 14:50:22,986 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1566 transitions. [2025-01-09 14:50:22,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2025-01-09 14:50:22,991 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:50:22,991 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:50:22,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 14:50:22,992 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:50:22,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:50:22,993 INFO L85 PathProgramCache]: Analyzing trace with hash -635866985, now seen corresponding path program 1 times [2025-01-09 14:50:22,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:50:22,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763631187] [2025-01-09 14:50:22,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:50:22,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:50:23,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-01-09 14:50:23,561 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-01-09 14:50:23,561 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:50:23,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:50:24,287 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2025-01-09 14:50:24,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:50:24,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763631187] [2025-01-09 14:50:24,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763631187] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:50:24,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:50:24,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 14:50:24,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455221050] [2025-01-09 14:50:24,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:50:24,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 14:50:24,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:50:24,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 14:50:24,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 14:50:24,291 INFO L87 Difference]: Start difference. First operand 929 states and 1566 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-01-09 14:50:24,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:50:24,406 INFO L93 Difference]: Finished difference Result 3011 states and 5113 transitions. [2025-01-09 14:50:24,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 14:50:24,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 622 [2025-01-09 14:50:24,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:50:24,420 INFO L225 Difference]: With dead ends: 3011 [2025-01-09 14:50:24,420 INFO L226 Difference]: Without dead ends: 2085 [2025-01-09 14:50:24,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 14:50:24,425 INFO L435 NwaCegarLoop]: 531 mSDtfsCounter, 472 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 14:50:24,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 1564 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 14:50:24,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2025-01-09 14:50:24,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 1763. [2025-01-09 14:50:24,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1564 states have (on average 1.6611253196930946) internal successors, (2598), 1566 states have internal predecessors, (2598), 194 states have call successors, (194), 4 states have call predecessors, (194), 4 states have return successors, (194), 192 states have call predecessors, (194), 194 states have call successors, (194) [2025-01-09 14:50:24,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2986 transitions. [2025-01-09 14:50:24,520 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2986 transitions. Word has length 622 [2025-01-09 14:50:24,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:50:24,522 INFO L471 AbstractCegarLoop]: Abstraction has 1763 states and 2986 transitions. [2025-01-09 14:50:24,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-01-09 14:50:24,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2986 transitions. [2025-01-09 14:50:24,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2025-01-09 14:50:24,531 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:50:24,532 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:50:24,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 14:50:24,532 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:50:24,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:50:24,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1050312853, now seen corresponding path program 1 times [2025-01-09 14:50:24,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:50:24,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443648933] [2025-01-09 14:50:24,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:50:24,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:50:24,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-01-09 14:50:25,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-01-09 14:50:25,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:50:25,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:50:26,446 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 9 proven. 273 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-01-09 14:50:26,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:50:26,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443648933] [2025-01-09 14:50:26,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443648933] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:50:26,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558767457] [2025-01-09 14:50:26,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:50:26,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:50:26,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:50:26,449 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 14:50:26,450 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 14:50:26,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-01-09 14:50:26,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-01-09 14:50:26,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:50:26,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:50:26,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 14:50:26,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:50:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 8784 proven. 117 refuted. 0 times theorem prover too weak. 8959 trivial. 0 not checked. [2025-01-09 14:50:27,270 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:50:27,743 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 165 proven. 117 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-01-09 14:50:27,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558767457] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:50:27,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:50:27,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-01-09 14:50:27,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184541140] [2025-01-09 14:50:27,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:50:27,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 14:50:27,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:50:27,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 14:50:27,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-01-09 14:50:27,746 INFO L87 Difference]: Start difference. First operand 1763 states and 2986 transitions. Second operand has 9 states, 9 states have (on average 29.666666666666668) internal successors, (267), 9 states have internal predecessors, (267), 4 states have call successors, (225), 2 states have call predecessors, (225), 4 states have return successors, (227), 4 states have call predecessors, (227), 4 states have call successors, (227) [2025-01-09 14:50:28,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:50:28,461 INFO L93 Difference]: Finished difference Result 2240 states and 3779 transitions. [2025-01-09 14:50:28,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 14:50:28,462 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 29.666666666666668) internal successors, (267), 9 states have internal predecessors, (267), 4 states have call successors, (225), 2 states have call predecessors, (225), 4 states have return successors, (227), 4 states have call predecessors, (227), 4 states have call successors, (227) Word has length 622 [2025-01-09 14:50:28,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:50:28,467 INFO L225 Difference]: With dead ends: 2240 [2025-01-09 14:50:28,468 INFO L226 Difference]: Without dead ends: 480 [2025-01-09 14:50:28,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1257 GetRequests, 1241 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2025-01-09 14:50:28,472 INFO L435 NwaCegarLoop]: 407 mSDtfsCounter, 875 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 14:50:28,473 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 1034 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 14:50:28,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2025-01-09 14:50:28,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 476. [2025-01-09 14:50:28,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 377 states have (on average 1.5835543766578248) internal successors, (597), 377 states have internal predecessors, (597), 95 states have call successors, (95), 3 states have call predecessors, (95), 3 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2025-01-09 14:50:28,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 787 transitions. [2025-01-09 14:50:28,498 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 787 transitions. Word has length 622 [2025-01-09 14:50:28,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:50:28,499 INFO L471 AbstractCegarLoop]: Abstraction has 476 states and 787 transitions. [2025-01-09 14:50:28,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 29.666666666666668) internal successors, (267), 9 states have internal predecessors, (267), 4 states have call successors, (225), 2 states have call predecessors, (225), 4 states have return successors, (227), 4 states have call predecessors, (227), 4 states have call successors, (227) [2025-01-09 14:50:28,500 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 787 transitions. [2025-01-09 14:50:28,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2025-01-09 14:50:28,503 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:50:28,503 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:50:28,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 14:50:28,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:50:28,709 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:50:28,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:50:28,710 INFO L85 PathProgramCache]: Analyzing trace with hash -219199812, now seen corresponding path program 1 times [2025-01-09 14:50:28,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:50:28,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763742411] [2025-01-09 14:50:28,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:50:28,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:50:28,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 623 statements into 1 equivalence classes. [2025-01-09 14:50:30,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 623 of 623 statements. [2025-01-09 14:50:30,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:50:30,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:50:31,086 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 165 proven. 117 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-01-09 14:50:31,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:50:31,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763742411] [2025-01-09 14:50:31,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763742411] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:50:31,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798280125] [2025-01-09 14:50:31,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:50:31,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:50:31,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:50:31,089 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 14:50:31,091 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 14:50:31,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 623 statements into 1 equivalence classes. [2025-01-09 14:50:31,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 623 of 623 statements. [2025-01-09 14:50:31,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:50:31,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:50:31,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 14:50:31,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:50:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 6562 proven. 60 refuted. 0 times theorem prover too weak. 11238 trivial. 0 not checked. [2025-01-09 14:50:31,918 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:50:32,408 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 222 proven. 60 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-01-09 14:50:32,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798280125] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:50:32,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:50:32,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-01-09 14:50:32,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521569775] [2025-01-09 14:50:32,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:50:32,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 14:50:32,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:50:32,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 14:50:32,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2025-01-09 14:50:32,414 INFO L87 Difference]: Start difference. First operand 476 states and 787 transitions. Second operand has 15 states, 15 states have (on average 25.6) internal successors, (384), 15 states have internal predecessors, (384), 7 states have call successors, (210), 3 states have call predecessors, (210), 5 states have return successors, (211), 7 states have call predecessors, (211), 7 states have call successors, (211) [2025-01-09 14:50:33,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:50:33,595 INFO L93 Difference]: Finished difference Result 965 states and 1587 transitions. [2025-01-09 14:50:33,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-09 14:50:33,597 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 25.6) internal successors, (384), 15 states have internal predecessors, (384), 7 states have call successors, (210), 3 states have call predecessors, (210), 5 states have return successors, (211), 7 states have call predecessors, (211), 7 states have call successors, (211) Word has length 623 [2025-01-09 14:50:33,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:50:33,600 INFO L225 Difference]: With dead ends: 965 [2025-01-09 14:50:33,600 INFO L226 Difference]: Without dead ends: 492 [2025-01-09 14:50:33,601 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1269 GetRequests, 1240 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=246, Invalid=684, Unknown=0, NotChecked=0, Total=930 [2025-01-09 14:50:33,602 INFO L435 NwaCegarLoop]: 381 mSDtfsCounter, 828 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-01-09 14:50:33,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 1550 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-01-09 14:50:33,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2025-01-09 14:50:33,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 484. [2025-01-09 14:50:33,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 383 states have (on average 1.5613577023498695) internal successors, (598), 383 states have internal predecessors, (598), 95 states have call successors, (95), 5 states have call predecessors, (95), 5 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2025-01-09 14:50:33,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 788 transitions. [2025-01-09 14:50:33,629 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 788 transitions. Word has length 623 [2025-01-09 14:50:33,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:50:33,630 INFO L471 AbstractCegarLoop]: Abstraction has 484 states and 788 transitions. [2025-01-09 14:50:33,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 25.6) internal successors, (384), 15 states have internal predecessors, (384), 7 states have call successors, (210), 3 states have call predecessors, (210), 5 states have return successors, (211), 7 states have call predecessors, (211), 7 states have call successors, (211) [2025-01-09 14:50:33,631 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 788 transitions. [2025-01-09 14:50:33,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2025-01-09 14:50:33,635 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:50:33,636 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:50:33,645 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 14:50:33,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:50:33,837 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:50:33,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:50:33,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1053530218, now seen corresponding path program 1 times [2025-01-09 14:50:33,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:50:33,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97810190] [2025-01-09 14:50:33,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:50:33,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:50:33,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 625 statements into 1 equivalence classes. [2025-01-09 14:50:34,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 625 of 625 statements. [2025-01-09 14:50:34,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:50:34,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:50:36,712 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 60 proven. 222 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-01-09 14:50:36,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:50:36,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97810190] [2025-01-09 14:50:36,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97810190] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:50:36,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284765037] [2025-01-09 14:50:36,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:50:36,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:50:36,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:50:36,715 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 14:50:36,717 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 14:50:36,898 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 625 statements into 1 equivalence classes. [2025-01-09 14:50:37,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 625 of 625 statements. [2025-01-09 14:50:37,053 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:50:37,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:50:37,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 14:50:37,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:50:38,207 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 11094 proven. 330 refuted. 0 times theorem prover too weak. 6436 trivial. 0 not checked. [2025-01-09 14:50:38,207 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:50:38,861 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 228 proven. 333 refuted. 0 times theorem prover too weak. 17299 trivial. 0 not checked. [2025-01-09 14:50:38,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284765037] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:50:38,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:50:38,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 10] total 22 [2025-01-09 14:50:38,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625968993] [2025-01-09 14:50:38,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:50:38,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 14:50:38,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:50:38,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 14:50:38,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2025-01-09 14:50:38,864 INFO L87 Difference]: Start difference. First operand 484 states and 788 transitions. Second operand has 22 states, 21 states have (on average 15.333333333333334) internal successors, (322), 22 states have internal predecessors, (322), 7 states have call successors, (251), 3 states have call predecessors, (251), 7 states have return successors, (253), 7 states have call predecessors, (253), 7 states have call successors, (253) [2025-01-09 14:50:41,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:50:41,822 INFO L93 Difference]: Finished difference Result 1335 states and 2138 transitions. [2025-01-09 14:50:41,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-01-09 14:50:41,823 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 15.333333333333334) internal successors, (322), 22 states have internal predecessors, (322), 7 states have call successors, (251), 3 states have call predecessors, (251), 7 states have return successors, (253), 7 states have call predecessors, (253), 7 states have call successors, (253) Word has length 625 [2025-01-09 14:50:41,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:50:41,827 INFO L225 Difference]: With dead ends: 1335 [2025-01-09 14:50:41,827 INFO L226 Difference]: Without dead ends: 826 [2025-01-09 14:50:41,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1300 GetRequests, 1247 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=801, Invalid=2169, Unknown=0, NotChecked=0, Total=2970 [2025-01-09 14:50:41,829 INFO L435 NwaCegarLoop]: 370 mSDtfsCounter, 2966 mSDsluCounter, 2074 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2966 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-01-09 14:50:41,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2966 Valid, 2444 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-01-09 14:50:41,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2025-01-09 14:50:41,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 715. [2025-01-09 14:50:41,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 606 states have (on average 1.5594059405940595) internal successors, (945), 607 states have internal predecessors, (945), 97 states have call successors, (97), 11 states have call predecessors, (97), 11 states have return successors, (97), 96 states have call predecessors, (97), 97 states have call successors, (97) [2025-01-09 14:50:41,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1139 transitions. [2025-01-09 14:50:41,877 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1139 transitions. Word has length 625 [2025-01-09 14:50:41,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:50:41,877 INFO L471 AbstractCegarLoop]: Abstraction has 715 states and 1139 transitions. [2025-01-09 14:50:41,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 15.333333333333334) internal successors, (322), 22 states have internal predecessors, (322), 7 states have call successors, (251), 3 states have call predecessors, (251), 7 states have return successors, (253), 7 states have call predecessors, (253), 7 states have call successors, (253) [2025-01-09 14:50:41,878 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1139 transitions. [2025-01-09 14:50:41,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2025-01-09 14:50:41,882 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:50:41,882 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:50:41,893 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 14:50:42,086 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,SelfDestructingSolverStorable7 [2025-01-09 14:50:42,086 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:50:42,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:50:42,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1950867923, now seen corresponding path program 1 times [2025-01-09 14:50:42,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:50:42,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878670767] [2025-01-09 14:50:42,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:50:42,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:50:42,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 627 statements into 1 equivalence classes. [2025-01-09 14:50:43,015 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 627 of 627 statements. [2025-01-09 14:50:43,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:50:43,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:50:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 60 proven. 222 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-01-09 14:50:44,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:50:44,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878670767] [2025-01-09 14:50:44,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878670767] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:50:44,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674834640] [2025-01-09 14:50:44,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:50:44,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:50:44,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:50:44,585 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 14:50:44,586 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 14:50:44,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 627 statements into 1 equivalence classes. [2025-01-09 14:50:44,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 627 of 627 statements. [2025-01-09 14:50:44,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:50:44,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:50:44,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 1467 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-09 14:50:44,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:50:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 1988 proven. 531 refuted. 0 times theorem prover too weak. 15341 trivial. 0 not checked. [2025-01-09 14:50:46,726 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:50:47,943 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 27 proven. 534 refuted. 0 times theorem prover too weak. 17299 trivial. 0 not checked. [2025-01-09 14:50:47,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674834640] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:50:47,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:50:47,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 15] total 31 [2025-01-09 14:50:47,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301964728] [2025-01-09 14:50:47,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:50:47,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-01-09 14:50:47,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:50:47,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-01-09 14:50:47,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2025-01-09 14:50:47,947 INFO L87 Difference]: Start difference. First operand 715 states and 1139 transitions. Second operand has 31 states, 30 states have (on average 10.3) internal successors, (309), 31 states have internal predecessors, (309), 5 states have call successors, (275), 3 states have call predecessors, (275), 7 states have return successors, (277), 5 states have call predecessors, (277), 5 states have call successors, (277) [2025-01-09 14:50:58,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:50:58,654 INFO L93 Difference]: Finished difference Result 6043 states and 9399 transitions. [2025-01-09 14:50:58,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2025-01-09 14:50:58,655 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 10.3) internal successors, (309), 31 states have internal predecessors, (309), 5 states have call successors, (275), 3 states have call predecessors, (275), 7 states have return successors, (277), 5 states have call predecessors, (277), 5 states have call successors, (277) Word has length 627 [2025-01-09 14:50:58,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:50:58,679 INFO L225 Difference]: With dead ends: 6043 [2025-01-09 14:50:58,680 INFO L226 Difference]: Without dead ends: 5331 [2025-01-09 14:50:58,690 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1484 GetRequests, 1266 SyntacticMatches, 2 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19797 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=8277, Invalid=39029, Unknown=0, NotChecked=0, Total=47306 [2025-01-09 14:50:58,693 INFO L435 NwaCegarLoop]: 705 mSDtfsCounter, 26386 mSDsluCounter, 7985 mSDsCounter, 0 mSdLazyCounter, 6786 mSolverCounterSat, 2843 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26386 SdHoareTripleChecker+Valid, 8690 SdHoareTripleChecker+Invalid, 9629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2843 IncrementalHoareTripleChecker+Valid, 6786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2025-01-09 14:50:58,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26386 Valid, 8690 Invalid, 9629 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2843 Valid, 6786 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2025-01-09 14:50:58,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5331 states. [2025-01-09 14:50:58,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5331 to 1516. [2025-01-09 14:50:58,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1293 states have (on average 1.5019334880123743) internal successors, (1942), 1293 states have internal predecessors, (1942), 190 states have call successors, (190), 32 states have call predecessors, (190), 32 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190) [2025-01-09 14:50:58,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2322 transitions. [2025-01-09 14:50:58,811 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2322 transitions. Word has length 627 [2025-01-09 14:50:58,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:50:58,811 INFO L471 AbstractCegarLoop]: Abstraction has 1516 states and 2322 transitions. [2025-01-09 14:50:58,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 10.3) internal successors, (309), 31 states have internal predecessors, (309), 5 states have call successors, (275), 3 states have call predecessors, (275), 7 states have return successors, (277), 5 states have call predecessors, (277), 5 states have call successors, (277) [2025-01-09 14:50:58,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2322 transitions. [2025-01-09 14:50:58,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2025-01-09 14:50:58,816 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:50:58,816 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:50:58,824 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 14:50:59,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:50:59,017 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:50:59,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:50:59,017 INFO L85 PathProgramCache]: Analyzing trace with hash -84629824, now seen corresponding path program 1 times [2025-01-09 14:50:59,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:50:59,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084057239] [2025-01-09 14:50:59,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:50:59,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:50:59,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 628 statements into 1 equivalence classes. [2025-01-09 14:51:00,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 628 of 628 statements. [2025-01-09 14:51:00,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:51:00,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:51:00,764 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 330 proven. 228 refuted. 0 times theorem prover too weak. 17302 trivial. 0 not checked. [2025-01-09 14:51:00,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:51:00,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084057239] [2025-01-09 14:51:00,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084057239] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:51:00,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009853049] [2025-01-09 14:51:00,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:51:00,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:51:00,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:51:00,766 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 14:51:00,767 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 14:51:00,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 628 statements into 1 equivalence classes. [2025-01-09 14:51:01,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 628 of 628 statements. [2025-01-09 14:51:01,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:51:01,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:51:01,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 1470 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-09 14:51:01,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:51:03,487 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 11708 proven. 444 refuted. 0 times theorem prover too weak. 5708 trivial. 0 not checked. [2025-01-09 14:51:03,487 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:51:04,257 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 330 proven. 231 refuted. 0 times theorem prover too weak. 17299 trivial. 0 not checked. [2025-01-09 14:51:04,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009853049] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:51:04,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:51:04,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 9] total 23 [2025-01-09 14:51:04,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428959168] [2025-01-09 14:51:04,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:51:04,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 14:51:04,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:51:04,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 14:51:04,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2025-01-09 14:51:04,259 INFO L87 Difference]: Start difference. First operand 1516 states and 2322 transitions. Second operand has 23 states, 21 states have (on average 16.571428571428573) internal successors, (348), 20 states have internal predecessors, (348), 10 states have call successors, (249), 5 states have call predecessors, (249), 10 states have return successors, (249), 10 states have call predecessors, (249), 10 states have call successors, (249) [2025-01-09 14:51:05,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:51:05,399 INFO L93 Difference]: Finished difference Result 3048 states and 4658 transitions. [2025-01-09 14:51:05,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 14:51:05,400 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 16.571428571428573) internal successors, (348), 20 states have internal predecessors, (348), 10 states have call successors, (249), 5 states have call predecessors, (249), 10 states have return successors, (249), 10 states have call predecessors, (249), 10 states have call successors, (249) Word has length 628 [2025-01-09 14:51:05,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:51:05,408 INFO L225 Difference]: With dead ends: 3048 [2025-01-09 14:51:05,409 INFO L226 Difference]: Without dead ends: 1535 [2025-01-09 14:51:05,413 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1279 GetRequests, 1245 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=395, Invalid=865, Unknown=0, NotChecked=0, Total=1260 [2025-01-09 14:51:05,414 INFO L435 NwaCegarLoop]: 394 mSDtfsCounter, 1528 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 1932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-01-09 14:51:05,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 2200 Invalid, 1932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 1428 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-01-09 14:51:05,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2025-01-09 14:51:05,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1511. [2025-01-09 14:51:05,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1286 states have (on average 1.4930015552099534) internal successors, (1920), 1286 states have internal predecessors, (1920), 190 states have call successors, (190), 34 states have call predecessors, (190), 34 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190) [2025-01-09 14:51:05,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 2300 transitions. [2025-01-09 14:51:05,524 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 2300 transitions. Word has length 628 [2025-01-09 14:51:05,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:51:05,525 INFO L471 AbstractCegarLoop]: Abstraction has 1511 states and 2300 transitions. [2025-01-09 14:51:05,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 16.571428571428573) internal successors, (348), 20 states have internal predecessors, (348), 10 states have call successors, (249), 5 states have call predecessors, (249), 10 states have return successors, (249), 10 states have call predecessors, (249), 10 states have call successors, (249) [2025-01-09 14:51:05,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 2300 transitions. [2025-01-09 14:51:05,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2025-01-09 14:51:05,535 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:51:05,536 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:51:05,546 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 14:51:05,736 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,SelfDestructingSolverStorable9 [2025-01-09 14:51:05,737 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:51:05,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:51:05,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1832814470, now seen corresponding path program 1 times [2025-01-09 14:51:05,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:51:05,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338313214] [2025-01-09 14:51:05,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:51:05,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:51:05,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 628 statements into 1 equivalence classes. [2025-01-09 14:51:06,728 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 628 of 628 statements. [2025-01-09 14:51:06,729 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:51:06,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:51:08,801 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 177 proven. 381 refuted. 0 times theorem prover too weak. 17302 trivial. 0 not checked. [2025-01-09 14:51:08,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:51:08,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338313214] [2025-01-09 14:51:08,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338313214] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:51:08,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462993389] [2025-01-09 14:51:08,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:51:08,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:51:08,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:51:08,803 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 14:51:08,806 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 14:51:09,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 628 statements into 1 equivalence classes. [2025-01-09 14:51:09,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 628 of 628 statements. [2025-01-09 14:51:09,228 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:51:09,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:51:09,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 1469 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-01-09 14:51:09,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:51:11,235 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 10810 proven. 354 refuted. 0 times theorem prover too weak. 6696 trivial. 0 not checked. [2025-01-09 14:51:11,236 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:51:14,107 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 738 proven. 372 refuted. 0 times theorem prover too weak. 16750 trivial. 0 not checked. [2025-01-09 14:51:14,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462993389] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:51:14,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:51:14,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 18, 19] total 43 [2025-01-09 14:51:14,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908272722] [2025-01-09 14:51:14,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:51:14,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-01-09 14:51:14,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:51:14,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-01-09 14:51:14,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=1504, Unknown=0, NotChecked=0, Total=1806 [2025-01-09 14:51:14,110 INFO L87 Difference]: Start difference. First operand 1511 states and 2300 transitions. Second operand has 43 states, 41 states have (on average 11.048780487804878) internal successors, (453), 39 states have internal predecessors, (453), 12 states have call successors, (285), 6 states have call predecessors, (285), 13 states have return successors, (285), 12 states have call predecessors, (285), 12 states have call successors, (285)