./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-88.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_amount100_file-88.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 7a94438cde4f2b77ff462971d0eccab102016c89632333d771f07852ad7ba7f7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 14:13:12,726 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 14:13:12,788 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 14:13:12,796 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 14:13:12,796 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 14:13:12,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 14:13:12,828 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 14:13:12,828 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 14:13:12,829 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 14:13:12,829 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 14:13:12,830 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 14:13:12,830 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 14:13:12,830 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 14:13:12,830 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 14:13:12,830 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 14:13:12,830 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 14:13:12,830 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 14:13:12,831 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 14:13:12,831 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 14:13:12,831 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 14:13:12,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 14:13:12,831 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 14:13:12,831 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 14:13:12,831 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 14:13:12,831 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 14:13:12,831 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 14:13:12,831 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 14:13:12,831 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 14:13:12,831 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 14:13:12,831 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 14:13:12,832 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 14:13:12,832 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 14:13:12,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:13:12,832 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 14:13:12,832 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 14:13:12,832 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 14:13:12,833 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 14:13:12,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:13:12,833 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 14:13:12,833 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 14:13:12,833 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 14:13:12,833 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 14:13:12,833 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 14:13:12,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 14:13:12,833 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 14:13:12,833 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 14:13:12,833 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 14:13:12,833 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 14:13:12,834 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 -> 7a94438cde4f2b77ff462971d0eccab102016c89632333d771f07852ad7ba7f7 [2025-01-09 14:13:13,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 14:13:13,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 14:13:13,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 14:13:13,056 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 14:13:13,056 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 14:13:13,058 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-88.i [2025-01-09 14:13:14,279 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/46f00feb0/34213254588e4bbdb3058c5f5a19b8bf/FLAGd25ee3d9b [2025-01-09 14:13:14,567 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 14:13:14,569 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-88.i [2025-01-09 14:13:14,578 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/46f00feb0/34213254588e4bbdb3058c5f5a19b8bf/FLAGd25ee3d9b [2025-01-09 14:13:14,592 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/46f00feb0/34213254588e4bbdb3058c5f5a19b8bf [2025-01-09 14:13:14,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 14:13:14,596 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 14:13:14,598 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 14:13:14,598 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 14:13:14,601 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 14:13:14,601 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:13:14" (1/1) ... [2025-01-09 14:13:14,602 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e9330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:13:14, skipping insertion in model container [2025-01-09 14:13:14,602 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:13:14" (1/1) ... [2025-01-09 14:13:14,616 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 14:13:14,762 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-88.i[916,929] [2025-01-09 14:13:14,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 14:13:14,854 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 14:13:14,863 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-88.i[916,929] [2025-01-09 14:13:14,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 14:13:14,913 INFO L204 MainTranslator]: Completed translation [2025-01-09 14:13:14,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:13:14 WrapperNode [2025-01-09 14:13:14,914 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 14:13:14,915 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 14:13:14,915 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 14:13:14,915 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 14:13:14,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:13:14" (1/1) ... [2025-01-09 14:13:14,926 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:13:14" (1/1) ... [2025-01-09 14:13:14,954 INFO L138 Inliner]: procedures = 26, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 278 [2025-01-09 14:13:14,955 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 14:13:14,955 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 14:13:14,955 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 14:13:14,955 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 14:13:14,967 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:13:14" (1/1) ... [2025-01-09 14:13:14,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:13:14" (1/1) ... [2025-01-09 14:13:14,972 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:13:14" (1/1) ... [2025-01-09 14:13:14,994 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 14:13:14,995 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:13:14" (1/1) ... [2025-01-09 14:13:14,995 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:13:14" (1/1) ... [2025-01-09 14:13:15,007 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:13:14" (1/1) ... [2025-01-09 14:13:15,012 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:13:14" (1/1) ... [2025-01-09 14:13:15,015 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:13:14" (1/1) ... [2025-01-09 14:13:15,018 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:13:14" (1/1) ... [2025-01-09 14:13:15,023 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:13:14" (1/1) ... [2025-01-09 14:13:15,027 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 14:13:15,028 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 14:13:15,028 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 14:13:15,028 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 14:13:15,029 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:13:14" (1/1) ... [2025-01-09 14:13:15,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:13:15,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:13:15,058 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 14:13:15,063 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 14:13:15,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 14:13:15,078 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 14:13:15,078 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 14:13:15,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 14:13:15,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 14:13:15,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 14:13:15,136 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 14:13:15,138 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 14:13:15,501 INFO L? ?]: Removed 40 outVars from TransFormulas that were not future-live. [2025-01-09 14:13:15,502 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 14:13:15,513 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 14:13:15,515 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 14:13:15,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:13:15 BoogieIcfgContainer [2025-01-09 14:13:15,515 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 14:13:15,517 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 14:13:15,517 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 14:13:15,520 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 14:13:15,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 02:13:14" (1/3) ... [2025-01-09 14:13:15,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1bd4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:13:15, skipping insertion in model container [2025-01-09 14:13:15,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:13:14" (2/3) ... [2025-01-09 14:13:15,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1bd4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:13:15, skipping insertion in model container [2025-01-09 14:13:15,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:13:15" (3/3) ... [2025-01-09 14:13:15,524 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-88.i [2025-01-09 14:13:15,536 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 14:13:15,538 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount100_file-88.i that has 2 procedures, 116 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 14:13:15,572 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 14:13:15,579 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;@52cb97fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 14:13:15,579 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 14:13:15,582 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 85 states have (on average 1.423529411764706) internal successors, (121), 86 states have internal predecessors, (121), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-01-09 14:13:15,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2025-01-09 14:13:15,591 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:13:15,592 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:15,592 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:13:15,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:13:15,596 INFO L85 PathProgramCache]: Analyzing trace with hash 107567028, now seen corresponding path program 1 times [2025-01-09 14:13:15,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:13:15,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49762027] [2025-01-09 14:13:15,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:13:15,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:13:15,671 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-01-09 14:13:15,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-01-09 14:13:15,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:13:15,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:13:15,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2025-01-09 14:13:15,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:13:15,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49762027] [2025-01-09 14:13:15,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49762027] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:13:15,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700849991] [2025-01-09 14:13:15,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:13:15,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:13:15,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:13:15,850 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 14:13:15,852 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 14:13:15,951 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-01-09 14:13:16,054 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-01-09 14:13:16,054 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:13:16,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:13:16,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 14:13:16,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:13:16,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2025-01-09 14:13:16,084 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 14:13:16,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700849991] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:13:16,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 14:13:16,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 14:13:16,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420391208] [2025-01-09 14:13:16,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:13:16,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 14:13:16,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:13:16,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 14:13:16,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 14:13:16,109 INFO L87 Difference]: Start difference. First operand has 116 states, 85 states have (on average 1.423529411764706) internal successors, (121), 86 states have internal predecessors, (121), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) [2025-01-09 14:13:16,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:13:16,128 INFO L93 Difference]: Finished difference Result 226 states and 377 transitions. [2025-01-09 14:13:16,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 14:13:16,130 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) Word has length 191 [2025-01-09 14:13:16,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:13:16,134 INFO L225 Difference]: With dead ends: 226 [2025-01-09 14:13:16,135 INFO L226 Difference]: Without dead ends: 113 [2025-01-09 14:13:16,137 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 192 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 14:13:16,139 INFO L435 NwaCegarLoop]: 172 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, 172 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 14:13:16,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 14:13:16,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2025-01-09 14:13:16,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2025-01-09 14:13:16,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 83 states have (on average 1.3975903614457832) internal successors, (116), 83 states have internal predecessors, (116), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-01-09 14:13:16,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 172 transitions. [2025-01-09 14:13:16,173 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 172 transitions. Word has length 191 [2025-01-09 14:13:16,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:13:16,173 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 172 transitions. [2025-01-09 14:13:16,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) [2025-01-09 14:13:16,173 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 172 transitions. [2025-01-09 14:13:16,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2025-01-09 14:13:16,176 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:13:16,176 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:16,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 14:13:16,380 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 14:13:16,380 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:13:16,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:13:16,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1809529132, now seen corresponding path program 1 times [2025-01-09 14:13:16,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:13:16,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630451876] [2025-01-09 14:13:16,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:13:16,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:13:16,409 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-01-09 14:13:16,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-01-09 14:13:16,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:13:16,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:13:17,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2025-01-09 14:13:17,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:13:17,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630451876] [2025-01-09 14:13:17,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630451876] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:13:17,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:13:17,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 14:13:17,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871405304] [2025-01-09 14:13:17,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:13:17,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 14:13:17,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:13:17,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 14:13:17,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 14:13:17,125 INFO L87 Difference]: Start difference. First operand 113 states and 172 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-01-09 14:13:17,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:13:17,525 INFO L93 Difference]: Finished difference Result 334 states and 511 transitions. [2025-01-09 14:13:17,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 14:13:17,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 191 [2025-01-09 14:13:17,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:13:17,528 INFO L225 Difference]: With dead ends: 334 [2025-01-09 14:13:17,528 INFO L226 Difference]: Without dead ends: 224 [2025-01-09 14:13:17,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-01-09 14:13:17,529 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 117 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 14:13:17,533 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 544 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 14:13:17,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2025-01-09 14:13:17,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 167. [2025-01-09 14:13:17,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 108 states have (on average 1.3240740740740742) internal successors, (143), 108 states have internal predecessors, (143), 56 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2025-01-09 14:13:17,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 255 transitions. [2025-01-09 14:13:17,570 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 255 transitions. Word has length 191 [2025-01-09 14:13:17,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:13:17,571 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 255 transitions. [2025-01-09 14:13:17,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-01-09 14:13:17,571 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 255 transitions. [2025-01-09 14:13:17,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2025-01-09 14:13:17,576 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:13:17,577 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:17,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 14:13:17,577 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:13:17,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:13:17,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1300056042, now seen corresponding path program 1 times [2025-01-09 14:13:17,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:13:17,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523258097] [2025-01-09 14:13:17,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:13:17,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:13:17,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-01-09 14:13:17,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-01-09 14:13:17,639 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:13:17,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:13:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2025-01-09 14:13:17,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:13:17,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523258097] [2025-01-09 14:13:17,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523258097] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:13:17,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:13:17,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 14:13:17,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243895843] [2025-01-09 14:13:17,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:13:17,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 14:13:17,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:13:17,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 14:13:17,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 14:13:17,870 INFO L87 Difference]: Start difference. First operand 167 states and 255 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-01-09 14:13:18,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:13:18,037 INFO L93 Difference]: Finished difference Result 427 states and 650 transitions. [2025-01-09 14:13:18,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 14:13:18,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 191 [2025-01-09 14:13:18,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:13:18,040 INFO L225 Difference]: With dead ends: 427 [2025-01-09 14:13:18,042 INFO L226 Difference]: Without dead ends: 317 [2025-01-09 14:13:18,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 14:13:18,044 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 248 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 14:13:18,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 484 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 14:13:18,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2025-01-09 14:13:18,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 271. [2025-01-09 14:13:18,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 183 states have (on average 1.3333333333333333) internal successors, (244), 183 states have internal predecessors, (244), 84 states have call successors, (84), 3 states have call predecessors, (84), 3 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2025-01-09 14:13:18,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 412 transitions. [2025-01-09 14:13:18,086 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 412 transitions. Word has length 191 [2025-01-09 14:13:18,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:13:18,087 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 412 transitions. [2025-01-09 14:13:18,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-01-09 14:13:18,088 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 412 transitions. [2025-01-09 14:13:18,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2025-01-09 14:13:18,090 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:13:18,090 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:18,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 14:13:18,091 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:13:18,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:13:18,091 INFO L85 PathProgramCache]: Analyzing trace with hash 352383693, now seen corresponding path program 1 times [2025-01-09 14:13:18,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:13:18,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679401518] [2025-01-09 14:13:18,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:13:18,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:13:18,105 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 192 statements into 1 equivalence classes. [2025-01-09 14:13:18,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 192 of 192 statements. [2025-01-09 14:13:18,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:13:18,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:13:18,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2025-01-09 14:13:18,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:13:18,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679401518] [2025-01-09 14:13:18,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679401518] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:13:18,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:13:18,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 14:13:18,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198326284] [2025-01-09 14:13:18,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:13:18,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 14:13:18,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:13:18,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 14:13:18,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-01-09 14:13:18,854 INFO L87 Difference]: Start difference. First operand 271 states and 412 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-01-09 14:13:19,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:13:19,803 INFO L93 Difference]: Finished difference Result 950 states and 1443 transitions. [2025-01-09 14:13:19,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 14:13:19,803 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 192 [2025-01-09 14:13:19,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:13:19,811 INFO L225 Difference]: With dead ends: 950 [2025-01-09 14:13:19,812 INFO L226 Difference]: Without dead ends: 736 [2025-01-09 14:13:19,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-01-09 14:13:19,813 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 421 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-09 14:13:19,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 811 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-09 14:13:19,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2025-01-09 14:13:19,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 395. [2025-01-09 14:13:19,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 278 states have (on average 1.3633093525179856) internal successors, (379), 278 states have internal predecessors, (379), 112 states have call successors, (112), 4 states have call predecessors, (112), 4 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2025-01-09 14:13:19,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 603 transitions. [2025-01-09 14:13:19,902 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 603 transitions. Word has length 192 [2025-01-09 14:13:19,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:13:19,903 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 603 transitions. [2025-01-09 14:13:19,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-01-09 14:13:19,903 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 603 transitions. [2025-01-09 14:13:19,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2025-01-09 14:13:19,905 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:13:19,905 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:19,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 14:13:19,906 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:13:19,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:13:19,906 INFO L85 PathProgramCache]: Analyzing trace with hash -927479985, now seen corresponding path program 1 times [2025-01-09 14:13:19,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:13:19,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413628592] [2025-01-09 14:13:19,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:13:19,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:13:19,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 192 statements into 1 equivalence classes. [2025-01-09 14:13:19,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 192 of 192 statements. [2025-01-09 14:13:19,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:13:19,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:13:20,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2025-01-09 14:13:20,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:13:20,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413628592] [2025-01-09 14:13:20,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413628592] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:13:20,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:13:20,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 14:13:20,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588138448] [2025-01-09 14:13:20,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:13:20,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 14:13:20,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:13:20,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 14:13:20,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 14:13:20,145 INFO L87 Difference]: Start difference. First operand 395 states and 603 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-01-09 14:13:20,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:13:20,495 INFO L93 Difference]: Finished difference Result 1067 states and 1629 transitions. [2025-01-09 14:13:20,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 14:13:20,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 192 [2025-01-09 14:13:20,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:13:20,504 INFO L225 Difference]: With dead ends: 1067 [2025-01-09 14:13:20,504 INFO L226 Difference]: Without dead ends: 729 [2025-01-09 14:13:20,505 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 14:13:20,506 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 166 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 14:13:20,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 447 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 14:13:20,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2025-01-09 14:13:20,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 727. [2025-01-09 14:13:20,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 523 states have (on average 1.3594646271510515) internal successors, (711), 523 states have internal predecessors, (711), 196 states have call successors, (196), 7 states have call predecessors, (196), 7 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2025-01-09 14:13:20,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1103 transitions. [2025-01-09 14:13:20,649 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1103 transitions. Word has length 192 [2025-01-09 14:13:20,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:13:20,650 INFO L471 AbstractCegarLoop]: Abstraction has 727 states and 1103 transitions. [2025-01-09 14:13:20,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-01-09 14:13:20,650 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1103 transitions. [2025-01-09 14:13:20,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2025-01-09 14:13:20,652 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:13:20,652 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:20,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 14:13:20,652 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:13:20,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:13:20,655 INFO L85 PathProgramCache]: Analyzing trace with hash 596281534, now seen corresponding path program 1 times [2025-01-09 14:13:20,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:13:20,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998246561] [2025-01-09 14:13:20,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:13:20,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:13:20,669 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 194 statements into 1 equivalence classes. [2025-01-09 14:13:20,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 194 of 194 statements. [2025-01-09 14:13:20,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:13:20,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:13:20,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2025-01-09 14:13:20,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:13:20,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998246561] [2025-01-09 14:13:20,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998246561] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:13:20,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:13:20,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 14:13:20,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554393665] [2025-01-09 14:13:20,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:13:20,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 14:13:20,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:13:20,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 14:13:20,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 14:13:20,981 INFO L87 Difference]: Start difference. First operand 727 states and 1103 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-01-09 14:13:21,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:13:21,797 INFO L93 Difference]: Finished difference Result 2412 states and 3653 transitions. [2025-01-09 14:13:21,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 14:13:21,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 194 [2025-01-09 14:13:21,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:13:21,805 INFO L225 Difference]: With dead ends: 2412 [2025-01-09 14:13:21,805 INFO L226 Difference]: Without dead ends: 1742 [2025-01-09 14:13:21,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-01-09 14:13:21,810 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 620 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 14:13:21,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 717 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 14:13:21,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2025-01-09 14:13:21,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 982. [2025-01-09 14:13:21,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 720 states have (on average 1.3819444444444444) internal successors, (995), 720 states have internal predecessors, (995), 252 states have call successors, (252), 9 states have call predecessors, (252), 9 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2025-01-09 14:13:21,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1499 transitions. [2025-01-09 14:13:21,965 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1499 transitions. Word has length 194 [2025-01-09 14:13:21,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:13:21,965 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1499 transitions. [2025-01-09 14:13:21,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-01-09 14:13:21,966 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1499 transitions. [2025-01-09 14:13:21,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2025-01-09 14:13:21,967 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:13:21,967 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:21,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 14:13:21,967 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:13:21,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:13:21,968 INFO L85 PathProgramCache]: Analyzing trace with hash 651215460, now seen corresponding path program 1 times [2025-01-09 14:13:21,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:13:21,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452145475] [2025-01-09 14:13:21,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:13:21,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:13:21,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 194 statements into 1 equivalence classes. [2025-01-09 14:13:21,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 194 of 194 statements. [2025-01-09 14:13:21,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:13:21,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:13:22,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2025-01-09 14:13:22,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:13:22,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452145475] [2025-01-09 14:13:22,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452145475] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:13:22,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:13:22,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 14:13:22,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956625599] [2025-01-09 14:13:22,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:13:22,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 14:13:22,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:13:22,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 14:13:22,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:13:22,064 INFO L87 Difference]: Start difference. First operand 982 states and 1499 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-01-09 14:13:22,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:13:22,232 INFO L93 Difference]: Finished difference Result 1981 states and 3028 transitions. [2025-01-09 14:13:22,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 14:13:22,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 194 [2025-01-09 14:13:22,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:13:22,238 INFO L225 Difference]: With dead ends: 1981 [2025-01-09 14:13:22,238 INFO L226 Difference]: Without dead ends: 1062 [2025-01-09 14:13:22,240 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:13:22,241 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 19 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 14:13:22,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 293 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 14:13:22,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2025-01-09 14:13:22,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 982. [2025-01-09 14:13:22,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 720 states have (on average 1.3763888888888889) internal successors, (991), 720 states have internal predecessors, (991), 252 states have call successors, (252), 9 states have call predecessors, (252), 9 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2025-01-09 14:13:22,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1495 transitions. [2025-01-09 14:13:22,344 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1495 transitions. Word has length 194 [2025-01-09 14:13:22,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:13:22,345 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1495 transitions. [2025-01-09 14:13:22,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-01-09 14:13:22,345 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1495 transitions. [2025-01-09 14:13:22,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2025-01-09 14:13:22,347 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:13:22,347 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:22,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 14:13:22,347 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:13:22,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:13:22,348 INFO L85 PathProgramCache]: Analyzing trace with hash -682026464, now seen corresponding path program 1 times [2025-01-09 14:13:22,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:13:22,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479046177] [2025-01-09 14:13:22,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:13:22,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:13:22,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 195 statements into 1 equivalence classes. [2025-01-09 14:13:22,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 195 of 195 statements. [2025-01-09 14:13:22,411 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:13:22,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:13:22,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 21 proven. 60 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2025-01-09 14:13:22,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:13:22,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479046177] [2025-01-09 14:13:22,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479046177] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:13:22,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507812195] [2025-01-09 14:13:22,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:13:22,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:13:22,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:13:22,714 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 14:13:22,719 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 14:13:22,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 195 statements into 1 equivalence classes. [2025-01-09 14:13:22,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 195 of 195 statements. [2025-01-09 14:13:22,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:13:22,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:13:22,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-09 14:13:22,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:13:22,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2025-01-09 14:13:22,932 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 14:13:22,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507812195] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:13:22,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 14:13:22,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2025-01-09 14:13:22,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916975944] [2025-01-09 14:13:22,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:13:22,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 14:13:22,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:13:22,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 14:13:22,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-01-09 14:13:22,933 INFO L87 Difference]: Start difference. First operand 982 states and 1495 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-01-09 14:13:23,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:13:23,452 INFO L93 Difference]: Finished difference Result 2645 states and 4031 transitions. [2025-01-09 14:13:23,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 14:13:23,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 195 [2025-01-09 14:13:23,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:13:23,463 INFO L225 Difference]: With dead ends: 2645 [2025-01-09 14:13:23,464 INFO L226 Difference]: Without dead ends: 1722 [2025-01-09 14:13:23,467 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2025-01-09 14:13:23,467 INFO L435 NwaCegarLoop]: 284 mSDtfsCounter, 278 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 14:13:23,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 955 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 14:13:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2025-01-09 14:13:23,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1439. [2025-01-09 14:13:23,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1061 states have (on average 1.3600377002827522) internal successors, (1443), 1061 states have internal predecessors, (1443), 364 states have call successors, (364), 13 states have call predecessors, (364), 13 states have return successors, (364), 364 states have call predecessors, (364), 364 states have call successors, (364) [2025-01-09 14:13:23,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 2171 transitions. [2025-01-09 14:13:23,625 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 2171 transitions. Word has length 195 [2025-01-09 14:13:23,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:13:23,626 INFO L471 AbstractCegarLoop]: Abstraction has 1439 states and 2171 transitions. [2025-01-09 14:13:23,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-01-09 14:13:23,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 2171 transitions. [2025-01-09 14:13:23,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2025-01-09 14:13:23,628 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:13:23,628 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:23,635 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 14:13:23,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:13:23,829 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:13:23,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:13:23,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1168073875, now seen corresponding path program 1 times [2025-01-09 14:13:23,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:13:23,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407860296] [2025-01-09 14:13:23,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:13:23,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:13:23,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 195 statements into 1 equivalence classes. [2025-01-09 14:13:23,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 195 of 195 statements. [2025-01-09 14:13:23,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:13:23,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:13:24,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2025-01-09 14:13:24,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:13:24,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407860296] [2025-01-09 14:13:24,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407860296] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:13:24,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:13:24,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 14:13:24,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685275877] [2025-01-09 14:13:24,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:13:24,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 14:13:24,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:13:24,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 14:13:24,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 14:13:24,275 INFO L87 Difference]: Start difference. First operand 1439 states and 2171 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-01-09 14:13:25,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:13:25,198 INFO L93 Difference]: Finished difference Result 3050 states and 4603 transitions. [2025-01-09 14:13:25,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 14:13:25,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 195 [2025-01-09 14:13:25,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:13:25,209 INFO L225 Difference]: With dead ends: 3050 [2025-01-09 14:13:25,209 INFO L226 Difference]: Without dead ends: 1674 [2025-01-09 14:13:25,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-01-09 14:13:25,215 INFO L435 NwaCegarLoop]: 299 mSDtfsCounter, 288 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-09 14:13:25,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1003 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-09 14:13:25,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2025-01-09 14:13:25,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1441. [2025-01-09 14:13:25,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1063 states have (on average 1.3593603010348072) internal successors, (1445), 1063 states have internal predecessors, (1445), 364 states have call successors, (364), 13 states have call predecessors, (364), 13 states have return successors, (364), 364 states have call predecessors, (364), 364 states have call successors, (364) [2025-01-09 14:13:25,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 2173 transitions. [2025-01-09 14:13:25,366 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 2173 transitions. Word has length 195 [2025-01-09 14:13:25,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:13:25,367 INFO L471 AbstractCegarLoop]: Abstraction has 1441 states and 2173 transitions. [2025-01-09 14:13:25,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-01-09 14:13:25,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 2173 transitions. [2025-01-09 14:13:25,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2025-01-09 14:13:25,369 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:13:25,369 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:25,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-09 14:13:25,369 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:13:25,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:13:25,369 INFO L85 PathProgramCache]: Analyzing trace with hash -545386007, now seen corresponding path program 1 times [2025-01-09 14:13:25,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:13:25,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977858512] [2025-01-09 14:13:25,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:13:25,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:13:25,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 196 statements into 1 equivalence classes. [2025-01-09 14:13:25,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 196 of 196 statements. [2025-01-09 14:13:25,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:13:25,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:13:25,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 75 proven. 6 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2025-01-09 14:13:25,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:13:25,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977858512] [2025-01-09 14:13:25,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977858512] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:13:25,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038932680] [2025-01-09 14:13:25,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:13:25,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:13:25,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:13:25,715 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 14:13:25,718 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 14:13:25,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 196 statements into 1 equivalence classes. [2025-01-09 14:13:25,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 196 of 196 statements. [2025-01-09 14:13:25,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:13:25,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:13:25,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 14:13:25,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:13:25,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 277 proven. 6 refuted. 0 times theorem prover too weak. 1229 trivial. 0 not checked. [2025-01-09 14:13:25,932 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:13:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 75 proven. 6 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2025-01-09 14:13:26,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038932680] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:13:26,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:13:26,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-01-09 14:13:26,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634370707] [2025-01-09 14:13:26,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:13:26,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 14:13:26,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:13:26,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 14:13:26,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-01-09 14:13:26,123 INFO L87 Difference]: Start difference. First operand 1441 states and 2173 transitions. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2025-01-09 14:13:26,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:13:26,866 INFO L93 Difference]: Finished difference Result 3763 states and 5575 transitions. [2025-01-09 14:13:26,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-09 14:13:26,867 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 196 [2025-01-09 14:13:26,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:13:26,878 INFO L225 Difference]: With dead ends: 3763 [2025-01-09 14:13:26,878 INFO L226 Difference]: Without dead ends: 2385 [2025-01-09 14:13:26,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 389 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=496, Unknown=0, NotChecked=0, Total=702 [2025-01-09 14:13:26,882 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 481 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 14:13:26,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 857 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 14:13:26,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2025-01-09 14:13:27,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 1493. [2025-01-09 14:13:27,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 1102 states have (on average 1.3466424682395643) internal successors, (1484), 1102 states have internal predecessors, (1484), 364 states have call successors, (364), 26 states have call predecessors, (364), 26 states have return successors, (364), 364 states have call predecessors, (364), 364 states have call successors, (364) [2025-01-09 14:13:27,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 2212 transitions. [2025-01-09 14:13:27,043 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 2212 transitions. Word has length 196 [2025-01-09 14:13:27,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:13:27,043 INFO L471 AbstractCegarLoop]: Abstraction has 1493 states and 2212 transitions. [2025-01-09 14:13:27,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2025-01-09 14:13:27,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 2212 transitions. [2025-01-09 14:13:27,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2025-01-09 14:13:27,046 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:13:27,046 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:27,054 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 14:13:27,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:13:27,247 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:13:27,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:13:27,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1306335825, now seen corresponding path program 1 times [2025-01-09 14:13:27,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:13:27,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822980669] [2025-01-09 14:13:27,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:13:27,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:13:27,261 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 196 statements into 1 equivalence classes. [2025-01-09 14:13:27,291 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 196 of 196 statements. [2025-01-09 14:13:27,291 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:13:27,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:13:28,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 6 proven. 75 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2025-01-09 14:13:28,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:13:28,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822980669] [2025-01-09 14:13:28,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822980669] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:13:28,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334333425] [2025-01-09 14:13:28,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:13:28,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:13:28,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:13:28,307 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 14:13:28,309 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 14:13:28,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 196 statements into 1 equivalence classes. [2025-01-09 14:13:28,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 196 of 196 statements. [2025-01-09 14:13:28,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:13:28,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:13:28,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-09 14:13:28,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:13:29,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2025-01-09 14:13:29,386 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 14:13:29,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334333425] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:13:29,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 14:13:29,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 20 [2025-01-09 14:13:29,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075652908] [2025-01-09 14:13:29,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:13:29,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 14:13:29,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:13:29,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 14:13:29,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2025-01-09 14:13:29,388 INFO L87 Difference]: Start difference. First operand 1493 states and 2212 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-01-09 14:13:29,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:13:29,862 INFO L93 Difference]: Finished difference Result 3189 states and 4708 transitions. [2025-01-09 14:13:29,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 14:13:29,863 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 196 [2025-01-09 14:13:29,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:13:29,872 INFO L225 Difference]: With dead ends: 3189 [2025-01-09 14:13:29,872 INFO L226 Difference]: Without dead ends: 1763 [2025-01-09 14:13:29,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2025-01-09 14:13:29,877 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 95 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 14:13:29,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 1021 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 14:13:29,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2025-01-09 14:13:30,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1584. [2025-01-09 14:13:30,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1193 states have (on average 1.3528918692372172) internal successors, (1614), 1193 states have internal predecessors, (1614), 364 states have call successors, (364), 26 states have call predecessors, (364), 26 states have return successors, (364), 364 states have call predecessors, (364), 364 states have call successors, (364) [2025-01-09 14:13:30,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2342 transitions. [2025-01-09 14:13:30,016 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2342 transitions. Word has length 196 [2025-01-09 14:13:30,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:13:30,017 INFO L471 AbstractCegarLoop]: Abstraction has 1584 states and 2342 transitions. [2025-01-09 14:13:30,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-01-09 14:13:30,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2342 transitions. [2025-01-09 14:13:30,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2025-01-09 14:13:30,019 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:13:30,019 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:30,029 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 14:13:30,224 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,SelfDestructingSolverStorable10 [2025-01-09 14:13:30,224 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:13:30,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:13:30,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1150991070, now seen corresponding path program 1 times [2025-01-09 14:13:30,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:13:30,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955686344] [2025-01-09 14:13:30,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:13:30,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:13:30,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 196 statements into 1 equivalence classes. [2025-01-09 14:13:30,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 196 of 196 statements. [2025-01-09 14:13:30,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:13:30,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:13:30,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2025-01-09 14:13:30,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:13:30,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955686344] [2025-01-09 14:13:30,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955686344] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:13:30,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:13:30,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 14:13:30,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668767554] [2025-01-09 14:13:30,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:13:30,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 14:13:30,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:13:30,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 14:13:30,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-09 14:13:30,461 INFO L87 Difference]: Start difference. First operand 1584 states and 2342 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-01-09 14:13:31,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:13:31,114 INFO L93 Difference]: Finished difference Result 4574 states and 6779 transitions. [2025-01-09 14:13:31,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 14:13:31,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 196 [2025-01-09 14:13:31,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:13:31,127 INFO L225 Difference]: With dead ends: 4574 [2025-01-09 14:13:31,127 INFO L226 Difference]: Without dead ends: 3130 [2025-01-09 14:13:31,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-01-09 14:13:31,132 INFO L435 NwaCegarLoop]: 348 mSDtfsCounter, 288 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 14:13:31,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 762 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 14:13:31,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3130 states. [2025-01-09 14:13:31,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3130 to 2229. [2025-01-09 14:13:31,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2229 states, 1718 states have (on average 1.3556461001164144) internal successors, (2329), 1718 states have internal predecessors, (2329), 476 states have call successors, (476), 34 states have call predecessors, (476), 34 states have return successors, (476), 476 states have call predecessors, (476), 476 states have call successors, (476) [2025-01-09 14:13:31,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 3281 transitions. [2025-01-09 14:13:31,346 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 3281 transitions. Word has length 196 [2025-01-09 14:13:31,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:13:31,347 INFO L471 AbstractCegarLoop]: Abstraction has 2229 states and 3281 transitions. [2025-01-09 14:13:31,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-01-09 14:13:31,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 3281 transitions. [2025-01-09 14:13:31,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2025-01-09 14:13:31,350 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:13:31,351 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:31,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-01-09 14:13:31,351 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:13:31,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:13:31,351 INFO L85 PathProgramCache]: Analyzing trace with hash -764240725, now seen corresponding path program 1 times [2025-01-09 14:13:31,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:13:31,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205280216] [2025-01-09 14:13:31,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:13:31,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:13:31,363 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 196 statements into 1 equivalence classes. [2025-01-09 14:13:31,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 196 of 196 statements. [2025-01-09 14:13:31,437 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:13:31,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:13:31,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 153 proven. 3 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2025-01-09 14:13:31,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:13:31,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205280216] [2025-01-09 14:13:31,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205280216] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:13:31,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939307657] [2025-01-09 14:13:31,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:13:31,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:13:31,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:13:31,826 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 14:13:31,828 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 14:13:31,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 196 statements into 1 equivalence classes. [2025-01-09 14:13:31,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 196 of 196 statements. [2025-01-09 14:13:31,932 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:13:31,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:13:31,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-09 14:13:31,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:13:32,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 283 proven. 3 refuted. 0 times theorem prover too weak. 1226 trivial. 0 not checked. [2025-01-09 14:13:32,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:13:32,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 153 proven. 6 refuted. 0 times theorem prover too weak. 1353 trivial. 0 not checked. [2025-01-09 14:13:32,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939307657] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:13:32,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:13:32,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 15 [2025-01-09 14:13:32,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135522849] [2025-01-09 14:13:32,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:13:32,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 14:13:32,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:13:32,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 14:13:32,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2025-01-09 14:13:32,275 INFO L87 Difference]: Start difference. First operand 2229 states and 3281 transitions. Second operand has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 2 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2025-01-09 14:13:32,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:13:32,743 INFO L93 Difference]: Finished difference Result 3445 states and 5008 transitions. [2025-01-09 14:13:32,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 14:13:32,743 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 2 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 196 [2025-01-09 14:13:32,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:13:32,749 INFO L225 Difference]: With dead ends: 3445 [2025-01-09 14:13:32,750 INFO L226 Difference]: Without dead ends: 1295 [2025-01-09 14:13:32,753 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 387 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=242, Invalid=514, Unknown=0, NotChecked=0, Total=756 [2025-01-09 14:13:32,754 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 210 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 14:13:32,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 532 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 14:13:32,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2025-01-09 14:13:32,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1219. [2025-01-09 14:13:32,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 939 states have (on average 1.3312034078807242) internal successors, (1250), 939 states have internal predecessors, (1250), 252 states have call successors, (252), 27 states have call predecessors, (252), 27 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2025-01-09 14:13:32,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1754 transitions. [2025-01-09 14:13:32,892 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1754 transitions. Word has length 196 [2025-01-09 14:13:32,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:13:32,892 INFO L471 AbstractCegarLoop]: Abstraction has 1219 states and 1754 transitions. [2025-01-09 14:13:32,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 2 states have call successors, (30), 2 states have call predecessors, (30), 6 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2025-01-09 14:13:32,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1754 transitions. [2025-01-09 14:13:32,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2025-01-09 14:13:32,895 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:13:32,896 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:32,903 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 14:13:33,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-01-09 14:13:33,096 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:13:33,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:13:33,097 INFO L85 PathProgramCache]: Analyzing trace with hash -762798897, now seen corresponding path program 1 times [2025-01-09 14:13:33,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:13:33,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440412516] [2025-01-09 14:13:33,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:13:33,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:13:33,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 197 statements into 1 equivalence classes. [2025-01-09 14:13:33,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 197 of 197 statements. [2025-01-09 14:13:33,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:13:33,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:13:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2025-01-09 14:13:33,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:13:33,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440412516] [2025-01-09 14:13:33,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440412516] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:13:33,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:13:33,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 14:13:33,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790559844] [2025-01-09 14:13:33,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:13:33,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 14:13:33,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:13:33,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 14:13:33,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 14:13:33,540 INFO L87 Difference]: Start difference. First operand 1219 states and 1754 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-01-09 14:13:34,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:13:34,271 INFO L93 Difference]: Finished difference Result 2542 states and 3651 transitions. [2025-01-09 14:13:34,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 14:13:34,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 197 [2025-01-09 14:13:34,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:13:34,279 INFO L225 Difference]: With dead ends: 2542 [2025-01-09 14:13:34,279 INFO L226 Difference]: Without dead ends: 1450 [2025-01-09 14:13:34,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-01-09 14:13:34,281 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 284 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 14:13:34,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 575 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 14:13:34,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2025-01-09 14:13:34,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1197. [2025-01-09 14:13:34,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 917 states have (on average 1.3249727371864777) internal successors, (1215), 917 states have internal predecessors, (1215), 252 states have call successors, (252), 27 states have call predecessors, (252), 27 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2025-01-09 14:13:34,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1719 transitions. [2025-01-09 14:13:34,414 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1719 transitions. Word has length 197 [2025-01-09 14:13:34,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:13:34,414 INFO L471 AbstractCegarLoop]: Abstraction has 1197 states and 1719 transitions. [2025-01-09 14:13:34,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-01-09 14:13:34,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1719 transitions. [2025-01-09 14:13:34,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2025-01-09 14:13:34,416 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:13:34,416 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:34,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-01-09 14:13:34,416 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:13:34,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:13:34,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1500268326, now seen corresponding path program 1 times [2025-01-09 14:13:34,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:13:34,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195394955] [2025-01-09 14:13:34,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:13:34,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:13:34,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 198 statements into 1 equivalence classes. [2025-01-09 14:13:34,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 198 of 198 statements. [2025-01-09 14:13:34,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:13:34,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:13:34,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 21 proven. 60 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2025-01-09 14:13:34,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:13:34,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195394955] [2025-01-09 14:13:34,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195394955] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:13:34,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752240865] [2025-01-09 14:13:34,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:13:34,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:13:34,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:13:34,670 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 14:13:34,676 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 14:13:34,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 198 statements into 1 equivalence classes. [2025-01-09 14:13:34,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 198 of 198 statements. [2025-01-09 14:13:34,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:13:34,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:13:34,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 14:13:34,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:13:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 601 proven. 60 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2025-01-09 14:13:35,323 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:13:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 21 proven. 60 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2025-01-09 14:13:35,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752240865] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:13:35,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:13:35,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-01-09 14:13:35,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510364285] [2025-01-09 14:13:35,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:13:35,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 14:13:35,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:13:35,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 14:13:35,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2025-01-09 14:13:35,681 INFO L87 Difference]: Start difference. First operand 1197 states and 1719 transitions. Second operand has 22 states, 22 states have (on average 6.181818181818182) internal successors, (136), 22 states have internal predecessors, (136), 5 states have call successors, (84), 3 states have call predecessors, (84), 6 states have return successors, (84), 5 states have call predecessors, (84), 5 states have call successors, (84) [2025-01-09 14:13:36,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:13:36,893 INFO L93 Difference]: Finished difference Result 3147 states and 4424 transitions. [2025-01-09 14:13:36,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-01-09 14:13:36,893 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.181818181818182) internal successors, (136), 22 states have internal predecessors, (136), 5 states have call successors, (84), 3 states have call predecessors, (84), 6 states have return successors, (84), 5 states have call predecessors, (84), 5 states have call successors, (84) Word has length 198 [2025-01-09 14:13:36,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:13:36,900 INFO L225 Difference]: With dead ends: 3147 [2025-01-09 14:13:36,900 INFO L226 Difference]: Without dead ends: 2029 [2025-01-09 14:13:36,903 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=346, Invalid=1460, Unknown=0, NotChecked=0, Total=1806 [2025-01-09 14:13:36,903 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 1154 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-09 14:13:36,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 1464 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-09 14:13:36,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2025-01-09 14:13:37,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1469. [2025-01-09 14:13:37,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1156 states have (on average 1.3183391003460208) internal successors, (1524), 1160 states have internal predecessors, (1524), 280 states have call successors, (280), 32 states have call predecessors, (280), 32 states have return successors, (280), 276 states have call predecessors, (280), 280 states have call successors, (280) [2025-01-09 14:13:37,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 2084 transitions. [2025-01-09 14:13:37,102 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 2084 transitions. Word has length 198 [2025-01-09 14:13:37,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:13:37,102 INFO L471 AbstractCegarLoop]: Abstraction has 1469 states and 2084 transitions. [2025-01-09 14:13:37,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.181818181818182) internal successors, (136), 22 states have internal predecessors, (136), 5 states have call successors, (84), 3 states have call predecessors, (84), 6 states have return successors, (84), 5 states have call predecessors, (84), 5 states have call successors, (84) [2025-01-09 14:13:37,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 2084 transitions. [2025-01-09 14:13:37,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2025-01-09 14:13:37,104 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:13:37,104 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:37,114 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 14:13:37,305 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,SelfDestructingSolverStorable14 [2025-01-09 14:13:37,305 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:13:37,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:13:37,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1634281832, now seen corresponding path program 1 times [2025-01-09 14:13:37,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:13:37,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108774678] [2025-01-09 14:13:37,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:13:37,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:13:37,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 198 statements into 1 equivalence classes. [2025-01-09 14:13:37,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 198 of 198 statements. [2025-01-09 14:13:37,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:13:37,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 14:13:37,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1466405284] [2025-01-09 14:13:37,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:13:37,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:13:37,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:13:37,399 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 14:13:37,403 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 14:13:37,473 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 198 statements into 1 equivalence classes. [2025-01-09 14:13:37,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 198 of 198 statements. [2025-01-09 14:13:37,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:13:37,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:13:37,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-01-09 14:13:37,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:14:24,545 WARN L286 SmtUtils]: Spent 16.04s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)