./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_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_fillercode_fillercodestructure_filler-ps-ci_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 544626e94f40206369c38a1538bf2cfb69086483d37ca14c4258f4bbade04394 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 11:47:21,825 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 11:47:21,880 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 11:47:21,884 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 11:47:21,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 11:47:21,903 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 11:47:21,904 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 11:47:21,904 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 11:47:21,904 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 11:47:21,904 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 11:47:21,905 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 11:47:21,905 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 11:47:21,905 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 11:47:21,905 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 11:47:21,905 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 11:47:21,906 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 11:47:21,906 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 11:47:21,906 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 11:47:21,906 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 11:47:21,906 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 11:47:21,906 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 11:47:21,906 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 11:47:21,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 11:47:21,906 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 11:47:21,906 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 11:47:21,907 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 11:47:21,907 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 11:47:21,907 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 11:47:21,907 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 11:47:21,907 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 11:47:21,907 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 11:47:21,907 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 11:47:21,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 11:47:21,907 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 11:47:21,907 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 11:47:21,908 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 11:47:21,908 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 11:47:21,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 11:47:21,908 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 11:47:21,908 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 11:47:21,908 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 11:47:21,908 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 11:47:21,908 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 11:47:21,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 11:47:21,908 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 11:47:21,908 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 11:47:21,909 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 11:47:21,909 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 11:47:21,909 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 -> 544626e94f40206369c38a1538bf2cfb69086483d37ca14c4258f4bbade04394 [2025-01-09 11:47:22,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 11:47:22,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 11:47:22,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 11:47:22,134 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 11:47:22,135 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 11:47:22,135 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-88.i [2025-01-09 11:47:23,263 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/de5c68c8b/f3b5806e41dc44fa807fa80dc8110dbc/FLAG0317508e7 [2025-01-09 11:47:23,527 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 11:47:23,531 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-88.i [2025-01-09 11:47:23,539 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/de5c68c8b/f3b5806e41dc44fa807fa80dc8110dbc/FLAG0317508e7 [2025-01-09 11:47:23,824 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/de5c68c8b/f3b5806e41dc44fa807fa80dc8110dbc [2025-01-09 11:47:23,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 11:47:23,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 11:47:23,828 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 11:47:23,828 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 11:47:23,830 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 11:47:23,831 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:47:23" (1/1) ... [2025-01-09 11:47:23,832 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bcc66c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:47:23, skipping insertion in model container [2025-01-09 11:47:23,832 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:47:23" (1/1) ... [2025-01-09 11:47:23,849 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 11:47:23,947 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_fillercode_fillercodestructure_filler-ps-ci_file-88.i[919,932] [2025-01-09 11:47:23,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 11:47:24,009 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 11:47:24,020 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_fillercode_fillercodestructure_filler-ps-ci_file-88.i[919,932] [2025-01-09 11:47:24,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 11:47:24,075 INFO L204 MainTranslator]: Completed translation [2025-01-09 11:47:24,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:47:24 WrapperNode [2025-01-09 11:47:24,080 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 11:47:24,081 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 11:47:24,084 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 11:47:24,084 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 11:47:24,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:47:24" (1/1) ... [2025-01-09 11:47:24,096 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:47:24" (1/1) ... [2025-01-09 11:47:24,134 INFO L138 Inliner]: procedures = 26, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 239 [2025-01-09 11:47:24,137 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 11:47:24,138 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 11:47:24,138 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 11:47:24,138 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 11:47:24,146 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:47:24" (1/1) ... [2025-01-09 11:47:24,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:47:24" (1/1) ... [2025-01-09 11:47:24,152 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:47:24" (1/1) ... [2025-01-09 11:47:24,169 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 11:47:24,175 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:47:24" (1/1) ... [2025-01-09 11:47:24,176 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:47:24" (1/1) ... [2025-01-09 11:47:24,191 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:47:24" (1/1) ... [2025-01-09 11:47:24,191 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:47:24" (1/1) ... [2025-01-09 11:47:24,193 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:47:24" (1/1) ... [2025-01-09 11:47:24,196 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:47:24" (1/1) ... [2025-01-09 11:47:24,197 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:47:24" (1/1) ... [2025-01-09 11:47:24,203 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 11:47:24,203 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 11:47:24,203 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 11:47:24,203 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 11:47:24,204 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:47:24" (1/1) ... [2025-01-09 11:47:24,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 11:47:24,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:47:24,227 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 11:47:24,231 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 11:47:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 11:47:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 11:47:24,244 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 11:47:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 11:47:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 11:47:24,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 11:47:24,308 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 11:47:24,309 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 11:47:24,678 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2025-01-09 11:47:24,678 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 11:47:24,687 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 11:47:24,688 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 11:47:24,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:47:24 BoogieIcfgContainer [2025-01-09 11:47:24,689 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 11:47:24,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 11:47:24,691 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 11:47:24,694 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 11:47:24,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 11:47:23" (1/3) ... [2025-01-09 11:47:24,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1d8882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:47:24, skipping insertion in model container [2025-01-09 11:47:24,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:47:24" (2/3) ... [2025-01-09 11:47:24,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1d8882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:47:24, skipping insertion in model container [2025-01-09 11:47:24,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:47:24" (3/3) ... [2025-01-09 11:47:24,697 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-88.i [2025-01-09 11:47:24,707 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 11:47:24,710 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-88.i that has 2 procedures, 104 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 11:47:24,754 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 11:47:24,767 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;@3d880fd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 11:47:24,768 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 11:47:24,771 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 74 states have internal predecessors, (105), 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 11:47:24,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-01-09 11:47:24,782 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:47:24,783 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] [2025-01-09 11:47:24,783 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:47:24,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:47:24,788 INFO L85 PathProgramCache]: Analyzing trace with hash 2029115813, now seen corresponding path program 1 times [2025-01-09 11:47:24,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:47:24,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762462979] [2025-01-09 11:47:24,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:47:24,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:47:24,882 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-01-09 11:47:24,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-01-09 11:47:24,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:47:24,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:47:25,058 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 11:47:25,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:47:25,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762462979] [2025-01-09 11:47:25,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762462979] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 11:47:25,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165242220] [2025-01-09 11:47:25,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:47:25,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:47:25,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:47:25,063 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 11:47:25,064 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 11:47:25,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-01-09 11:47:25,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-01-09 11:47:25,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:47:25,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:47:25,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 11:47:25,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 11:47:25,235 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 11:47:25,235 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 11:47:25,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165242220] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 11:47:25,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 11:47:25,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 11:47:25,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972100207] [2025-01-09 11:47:25,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 11:47:25,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 11:47:25,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:47:25,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 11:47:25,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 11:47:25,251 INFO L87 Difference]: Start difference. First operand has 104 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 74 states have internal predecessors, (105), 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 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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 11:47:25,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:47:25,268 INFO L93 Difference]: Finished difference Result 202 states and 345 transitions. [2025-01-09 11:47:25,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 11:47:25,269 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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 187 [2025-01-09 11:47:25,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:47:25,273 INFO L225 Difference]: With dead ends: 202 [2025-01-09 11:47:25,273 INFO L226 Difference]: Without dead ends: 101 [2025-01-09 11:47:25,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 188 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 11:47:25,277 INFO L435 NwaCegarLoop]: 155 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, 155 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 11:47:25,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 11:47:25,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-01-09 11:47:25,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2025-01-09 11:47:25,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 71 states have (on average 1.3943661971830985) internal successors, (99), 71 states have internal predecessors, (99), 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 11:47:25,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 155 transitions. [2025-01-09 11:47:25,312 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 155 transitions. Word has length 187 [2025-01-09 11:47:25,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:47:25,313 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 155 transitions. [2025-01-09 11:47:25,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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 11:47:25,314 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 155 transitions. [2025-01-09 11:47:25,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-01-09 11:47:25,317 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:47:25,318 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] [2025-01-09 11:47:25,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 11:47:25,518 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 11:47:25,519 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:47:25,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:47:25,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1339048675, now seen corresponding path program 1 times [2025-01-09 11:47:25,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:47:25,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593224146] [2025-01-09 11:47:25,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:47:25,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:47:25,542 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-01-09 11:47:25,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-01-09 11:47:25,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:47:25,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:47:26,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 30 proven. 51 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2025-01-09 11:47:26,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:47:26,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593224146] [2025-01-09 11:47:26,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593224146] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 11:47:26,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963882155] [2025-01-09 11:47:26,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:47:26,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:47:26,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:47:26,343 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 11:47:26,344 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 11:47:26,407 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-01-09 11:47:26,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-01-09 11:47:26,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:47:26,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:47:26,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 11:47:26,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 11:47:26,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 727 proven. 51 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2025-01-09 11:47:26,718 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 11:47:26,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 30 proven. 51 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2025-01-09 11:47:26,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963882155] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 11:47:26,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 11:47:26,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2025-01-09 11:47:26,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462264151] [2025-01-09 11:47:26,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 11:47:26,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 11:47:26,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:47:26,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 11:47:26,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2025-01-09 11:47:26,963 INFO L87 Difference]: Start difference. First operand 101 states and 155 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 2 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2025-01-09 11:47:27,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:47:27,336 INFO L93 Difference]: Finished difference Result 312 states and 471 transitions. [2025-01-09 11:47:27,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 11:47:27,336 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 2 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 187 [2025-01-09 11:47:27,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:47:27,338 INFO L225 Difference]: With dead ends: 312 [2025-01-09 11:47:27,339 INFO L226 Difference]: Without dead ends: 214 [2025-01-09 11:47:27,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 370 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2025-01-09 11:47:27,340 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 419 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 11:47:27,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 404 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 11:47:27,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2025-01-09 11:47:27,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 190. [2025-01-09 11:47:27,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 129 states have (on average 1.3255813953488371) internal successors, (171), 129 states have internal predecessors, (171), 56 states have call successors, (56), 4 states have call predecessors, (56), 4 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2025-01-09 11:47:27,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 283 transitions. [2025-01-09 11:47:27,363 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 283 transitions. Word has length 187 [2025-01-09 11:47:27,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:47:27,363 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 283 transitions. [2025-01-09 11:47:27,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 2 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2025-01-09 11:47:27,363 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 283 transitions. [2025-01-09 11:47:27,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-01-09 11:47:27,365 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:47:27,365 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] [2025-01-09 11:47:27,372 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 11:47:27,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:47:27,566 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:47:27,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:47:27,567 INFO L85 PathProgramCache]: Analyzing trace with hash 435958687, now seen corresponding path program 1 times [2025-01-09 11:47:27,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:47:27,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414344510] [2025-01-09 11:47:27,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:47:27,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:47:27,581 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-01-09 11:47:27,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-01-09 11:47:27,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:47:27,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:47:28,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 111 proven. 45 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2025-01-09 11:47:28,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:47:28,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414344510] [2025-01-09 11:47:28,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414344510] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 11:47:28,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222414610] [2025-01-09 11:47:28,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:47:28,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:47:28,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:47:28,257 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 11:47:28,259 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 11:47:28,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-01-09 11:47:28,354 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-01-09 11:47:28,354 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:47:28,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:47:28,356 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-09 11:47:28,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 11:47:29,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 831 proven. 45 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2025-01-09 11:47:29,013 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 11:47:30,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 111 proven. 48 refuted. 0 times theorem prover too weak. 1353 trivial. 0 not checked. [2025-01-09 11:47:30,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222414610] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 11:47:30,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 11:47:30,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 13] total 30 [2025-01-09 11:47:30,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866011179] [2025-01-09 11:47:30,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 11:47:30,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-01-09 11:47:30,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:47:30,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-01-09 11:47:30,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2025-01-09 11:47:30,542 INFO L87 Difference]: Start difference. First operand 190 states and 283 transitions. Second operand has 30 states, 30 states have (on average 4.366666666666666) internal successors, (131), 30 states have internal predecessors, (131), 8 states have call successors, (84), 4 states have call predecessors, (84), 9 states have return successors, (84), 8 states have call predecessors, (84), 8 states have call successors, (84) [2025-01-09 11:47:34,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:47:34,499 INFO L93 Difference]: Finished difference Result 1629 states and 2383 transitions. [2025-01-09 11:47:34,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-01-09 11:47:34,499 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.366666666666666) internal successors, (131), 30 states have internal predecessors, (131), 8 states have call successors, (84), 4 states have call predecessors, (84), 9 states have return successors, (84), 8 states have call predecessors, (84), 8 states have call successors, (84) Word has length 187 [2025-01-09 11:47:34,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:47:34,514 INFO L225 Difference]: With dead ends: 1629 [2025-01-09 11:47:34,514 INFO L226 Difference]: Without dead ends: 1442 [2025-01-09 11:47:34,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1454 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1033, Invalid=4079, Unknown=0, NotChecked=0, Total=5112 [2025-01-09 11:47:34,522 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 1695 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 947 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 3347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 947 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-01-09 11:47:34,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1733 Valid, 1537 Invalid, 3347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [947 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-01-09 11:47:34,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2025-01-09 11:47:34,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 407. [2025-01-09 11:47:34,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 277 states have (on average 1.3068592057761732) internal successors, (362), 279 states have internal predecessors, (362), 116 states have call successors, (116), 13 states have call predecessors, (116), 13 states have return successors, (116), 114 states have call predecessors, (116), 116 states have call successors, (116) [2025-01-09 11:47:34,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 594 transitions. [2025-01-09 11:47:34,634 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 594 transitions. Word has length 187 [2025-01-09 11:47:34,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:47:34,636 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 594 transitions. [2025-01-09 11:47:34,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.366666666666666) internal successors, (131), 30 states have internal predecessors, (131), 8 states have call successors, (84), 4 states have call predecessors, (84), 9 states have return successors, (84), 8 states have call predecessors, (84), 8 states have call successors, (84) [2025-01-09 11:47:34,636 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 594 transitions. [2025-01-09 11:47:34,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2025-01-09 11:47:34,639 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:47:34,639 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] [2025-01-09 11:47:34,646 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 11:47:34,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:47:34,840 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:47:34,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:47:34,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1571003994, now seen corresponding path program 1 times [2025-01-09 11:47:34,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:47:34,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337983438] [2025-01-09 11:47:34,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:47:34,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:47:34,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 188 statements into 1 equivalence classes. [2025-01-09 11:47:34,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 188 of 188 statements. [2025-01-09 11:47:34,915 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:47:34,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 11:47:34,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1397072762] [2025-01-09 11:47:34,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:47:34,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:47:34,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:47:34,921 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 11:47:34,925 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 11:47:34,999 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 188 statements into 1 equivalence classes. [2025-01-09 11:47:35,037 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 188 of 188 statements. [2025-01-09 11:47:35,037 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:47:35,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:47:35,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-09 11:47:35,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 11:47:35,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 777 proven. 36 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked. [2025-01-09 11:47:35,613 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 11:47:35,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:47:35,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337983438] [2025-01-09 11:47:35,832 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 11:47:35,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397072762] [2025-01-09 11:47:35,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397072762] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 11:47:35,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-09 11:47:35,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2025-01-09 11:47:35,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136066751] [2025-01-09 11:47:35,833 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-09 11:47:35,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 11:47:35,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:47:35,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 11:47:35,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-01-09 11:47:35,834 INFO L87 Difference]: Start difference. First operand 407 states and 594 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2025-01-09 11:47:36,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:47:36,189 INFO L93 Difference]: Finished difference Result 861 states and 1258 transitions. [2025-01-09 11:47:36,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 11:47:36,190 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 188 [2025-01-09 11:47:36,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:47:36,193 INFO L225 Difference]: With dead ends: 861 [2025-01-09 11:47:36,193 INFO L226 Difference]: Without dead ends: 542 [2025-01-09 11:47:36,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2025-01-09 11:47:36,195 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 203 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 11:47:36,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 678 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 11:47:36,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2025-01-09 11:47:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 422. [2025-01-09 11:47:36,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 291 states have (on average 1.3058419243986255) internal successors, (380), 293 states have internal predecessors, (380), 116 states have call successors, (116), 14 states have call predecessors, (116), 14 states have return successors, (116), 114 states have call predecessors, (116), 116 states have call successors, (116) [2025-01-09 11:47:36,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 612 transitions. [2025-01-09 11:47:36,235 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 612 transitions. Word has length 188 [2025-01-09 11:47:36,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:47:36,236 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 612 transitions. [2025-01-09 11:47:36,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2025-01-09 11:47:36,236 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 612 transitions. [2025-01-09 11:47:36,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2025-01-09 11:47:36,237 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:47:36,238 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] [2025-01-09 11:47:36,244 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 11:47:36,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:47:36,438 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:47:36,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:47:36,439 INFO L85 PathProgramCache]: Analyzing trace with hash 549935640, now seen corresponding path program 1 times [2025-01-09 11:47:36,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:47:36,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713226731] [2025-01-09 11:47:36,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:47:36,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:47:36,448 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 188 statements into 1 equivalence classes. [2025-01-09 11:47:36,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 188 of 188 statements. [2025-01-09 11:47:36,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:47:36,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 11:47:36,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [280654179] [2025-01-09 11:47:36,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:47:36,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:47:36,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:47:36,477 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 11:47:36,479 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 11:47:36,531 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 188 statements into 1 equivalence classes. [2025-01-09 11:47:36,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 188 of 188 statements. [2025-01-09 11:47:36,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:47:36,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:47:36,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-09 11:47:36,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 11:47:36,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 511 proven. 15 refuted. 0 times theorem prover too weak. 986 trivial. 0 not checked. [2025-01-09 11:47:36,963 INFO L312 TraceCheckSpWp]: Computing backward predicates...