./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-6.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_variablewrapping_wrapper-sp_file-6.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 db4292ffbdd6738d463d7123be4385279117f56fc7d42e6eafbd16b6955555da --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 16:12:47,008 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:12:47,062 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 16:12:47,066 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:12:47,066 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:12:47,078 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:12:47,078 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:12:47,078 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:12:47,079 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:12:47,079 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:12:47,079 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:12:47,079 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:12:47,079 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:12:47,080 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:12:47,080 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:12:47,080 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:12:47,080 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:12:47,080 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 16:12:47,080 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:12:47,080 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 16:12:47,082 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:12:47,083 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:12:47,083 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:12:47,083 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:12:47,083 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 16:12:47,083 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:12:47,083 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:12:47,083 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:12:47,083 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:12:47,083 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:12:47,083 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:12:47,083 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:12:47,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:12:47,084 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:12:47,084 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:12:47,084 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:12:47,084 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:12:47,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:12:47,084 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:12:47,084 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:12:47,084 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:12:47,084 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:12:47,084 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:12:47,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:12:47,085 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:12:47,085 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:12:47,085 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:12:47,085 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:12:47,085 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 -> db4292ffbdd6738d463d7123be4385279117f56fc7d42e6eafbd16b6955555da [2025-01-09 16:12:47,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:12:47,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:12:47,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:12:47,267 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:12:47,267 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:12:47,268 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-6.i [2025-01-09 16:12:48,337 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/88f34f34f/ab2d91a6f17b4b1bb16fd7132615dc4e/FLAGd0b89f937 [2025-01-09 16:12:48,632 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:12:48,637 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-6.i [2025-01-09 16:12:48,644 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/88f34f34f/ab2d91a6f17b4b1bb16fd7132615dc4e/FLAGd0b89f937 [2025-01-09 16:12:48,917 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/88f34f34f/ab2d91a6f17b4b1bb16fd7132615dc4e [2025-01-09 16:12:48,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:12:48,920 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:12:48,921 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:12:48,921 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:12:48,924 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:12:48,924 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:12:48" (1/1) ... [2025-01-09 16:12:48,925 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e0ecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:12:48, skipping insertion in model container [2025-01-09 16:12:48,925 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:12:48" (1/1) ... [2025-01-09 16:12:48,937 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:12:49,016 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_variablewrapping_wrapper-sp_file-6.i[916,929] [2025-01-09 16:12:49,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:12:49,086 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:12:49,098 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_variablewrapping_wrapper-sp_file-6.i[916,929] [2025-01-09 16:12:49,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:12:49,193 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:12:49,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:12:49 WrapperNode [2025-01-09 16:12:49,196 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:12:49,196 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:12:49,196 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:12:49,197 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:12:49,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:12:49" (1/1) ... [2025-01-09 16:12:49,213 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:12:49" (1/1) ... [2025-01-09 16:12:49,238 INFO L138 Inliner]: procedures = 30, calls = 166, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 524 [2025-01-09 16:12:49,239 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:12:49,239 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:12:49,239 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:12:49,240 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:12:49,246 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:12:49" (1/1) ... [2025-01-09 16:12:49,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:12:49" (1/1) ... [2025-01-09 16:12:49,250 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:12:49" (1/1) ... [2025-01-09 16:12:49,255 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2025-01-09 16:12:49,255 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:12:49" (1/1) ... [2025-01-09 16:12:49,256 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:12:49" (1/1) ... [2025-01-09 16:12:49,269 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:12:49" (1/1) ... [2025-01-09 16:12:49,271 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:12:49" (1/1) ... [2025-01-09 16:12:49,274 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:12:49" (1/1) ... [2025-01-09 16:12:49,276 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:12:49" (1/1) ... [2025-01-09 16:12:49,277 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:12:49" (1/1) ... [2025-01-09 16:12:49,281 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:12:49,282 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:12:49,282 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:12:49,282 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:12:49,283 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:12:49" (1/1) ... [2025-01-09 16:12:49,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:12:49,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:12:49,311 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 16:12:49,319 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 16:12:49,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:12:49,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2025-01-09 16:12:49,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2025-01-09 16:12:49,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-01-09 16:12:49,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2025-01-09 16:12:49,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2025-01-09 16:12:49,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-01-09 16:12:49,336 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 16:12:49,336 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 16:12:49,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-01-09 16:12:49,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:12:49,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:12:49,453 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:12:49,455 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:12:49,939 INFO L? ?]: Removed 131 outVars from TransFormulas that were not future-live. [2025-01-09 16:12:49,940 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:12:49,950 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:12:49,952 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 16:12:49,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:12:49 BoogieIcfgContainer [2025-01-09 16:12:49,954 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:12:49,955 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:12:49,956 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:12:49,959 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:12:49,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:12:48" (1/3) ... [2025-01-09 16:12:49,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c14ab1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:12:49, skipping insertion in model container [2025-01-09 16:12:49,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:12:49" (2/3) ... [2025-01-09 16:12:49,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c14ab1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:12:49, skipping insertion in model container [2025-01-09 16:12:49,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:12:49" (3/3) ... [2025-01-09 16:12:49,962 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-6.i [2025-01-09 16:12:49,973 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:12:49,975 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-sp_file-6.i that has 2 procedures, 121 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 16:12:50,025 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:12:50,035 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;@5867a9fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:12:50,037 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 16:12:50,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 99 states have (on average 1.404040404040404) internal successors, (139), 100 states have internal predecessors, (139), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-01-09 16:12:50,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-01-09 16:12:50,053 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:12:50,053 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:12:50,054 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:12:50,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:12:50,060 INFO L85 PathProgramCache]: Analyzing trace with hash 260376110, now seen corresponding path program 1 times [2025-01-09 16:12:50,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:12:50,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079214343] [2025-01-09 16:12:50,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:12:50,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:12:50,217 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-01-09 16:12:50,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-01-09 16:12:50,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:12:50,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:12:50,456 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2025-01-09 16:12:50,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:12:50,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079214343] [2025-01-09 16:12:50,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079214343] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:12:50,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985288936] [2025-01-09 16:12:50,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:12:50,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:12:50,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:12:50,460 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 16:12:50,461 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 16:12:50,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-01-09 16:12:50,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-01-09 16:12:50,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:12:50,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:12:50,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 16:12:50,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:12:50,750 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2025-01-09 16:12:50,751 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:12:50,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985288936] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:12:50,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:12:50,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 16:12:50,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414234229] [2025-01-09 16:12:50,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:12:50,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 16:12:50,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:12:50,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 16:12:50,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 16:12:50,770 INFO L87 Difference]: Start difference. First operand has 121 states, 99 states have (on average 1.404040404040404) internal successors, (139), 100 states have internal predecessors, (139), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-01-09 16:12:50,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:12:50,788 INFO L93 Difference]: Finished difference Result 236 states and 368 transitions. [2025-01-09 16:12:50,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 16:12:50,789 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 158 [2025-01-09 16:12:50,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:12:50,794 INFO L225 Difference]: With dead ends: 236 [2025-01-09 16:12:50,794 INFO L226 Difference]: Without dead ends: 118 [2025-01-09 16:12:50,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 159 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 16:12:50,798 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 16:12:50,798 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 16:12:50,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2025-01-09 16:12:50,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2025-01-09 16:12:50,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 97 states have (on average 1.3814432989690721) internal successors, (134), 97 states have internal predecessors, (134), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-01-09 16:12:50,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 172 transitions. [2025-01-09 16:12:50,826 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 172 transitions. Word has length 158 [2025-01-09 16:12:50,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:12:50,826 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 172 transitions. [2025-01-09 16:12:50,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-01-09 16:12:50,827 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 172 transitions. [2025-01-09 16:12:50,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-01-09 16:12:50,830 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:12:50,830 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:12:50,837 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 16:12:51,034 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 16:12:51,035 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:12:51,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:12:51,035 INFO L85 PathProgramCache]: Analyzing trace with hash 759758284, now seen corresponding path program 1 times [2025-01-09 16:12:51,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:12:51,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858235617] [2025-01-09 16:12:51,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:12:51,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:12:51,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-01-09 16:12:51,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-01-09 16:12:51,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:12:51,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:12:51,407 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-01-09 16:12:51,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:12:51,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858235617] [2025-01-09 16:12:51,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858235617] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:12:51,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:12:51,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:12:51,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869595843] [2025-01-09 16:12:51,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:12:51,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:12:51,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:12:51,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:12:51,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:12:51,409 INFO L87 Difference]: Start difference. First operand 118 states and 172 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-01-09 16:12:51,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:12:51,428 INFO L93 Difference]: Finished difference Result 233 states and 341 transitions. [2025-01-09 16:12:51,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:12:51,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 158 [2025-01-09 16:12:51,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:12:51,430 INFO L225 Difference]: With dead ends: 233 [2025-01-09 16:12:51,430 INFO L226 Difference]: Without dead ends: 118 [2025-01-09 16:12:51,431 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:12:51,431 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 0 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 16:12:51,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 335 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 16:12:51,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2025-01-09 16:12:51,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2025-01-09 16:12:51,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 97 states have (on average 1.3711340206185567) internal successors, (133), 97 states have internal predecessors, (133), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-01-09 16:12:51,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 171 transitions. [2025-01-09 16:12:51,439 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 171 transitions. Word has length 158 [2025-01-09 16:12:51,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:12:51,440 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 171 transitions. [2025-01-09 16:12:51,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-01-09 16:12:51,440 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 171 transitions. [2025-01-09 16:12:51,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-01-09 16:12:51,441 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:12:51,441 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:12:51,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 16:12:51,442 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:12:51,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:12:51,442 INFO L85 PathProgramCache]: Analyzing trace with hash -929185458, now seen corresponding path program 1 times [2025-01-09 16:12:51,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:12:51,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753279161] [2025-01-09 16:12:51,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:12:51,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:12:51,484 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-01-09 16:12:51,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-01-09 16:12:51,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:12:51,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:12:51,765 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2025-01-09 16:12:51,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:12:51,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753279161] [2025-01-09 16:12:51,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753279161] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:12:51,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805931383] [2025-01-09 16:12:51,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:12:51,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:12:51,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:12:51,772 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 16:12:51,776 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 16:12:51,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-01-09 16:12:52,007 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-01-09 16:12:52,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:12:52,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:12:52,011 INFO L256 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 16:12:52,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:12:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-01-09 16:12:52,057 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:12:52,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805931383] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:12:52,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:12:52,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2025-01-09 16:12:52,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030807621] [2025-01-09 16:12:52,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:12:52,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:12:52,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:12:52,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:12:52,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:12:52,059 INFO L87 Difference]: Start difference. First operand 118 states and 171 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-01-09 16:12:52,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:12:52,102 INFO L93 Difference]: Finished difference Result 235 states and 342 transitions. [2025-01-09 16:12:52,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 16:12:52,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 158 [2025-01-09 16:12:52,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:12:52,104 INFO L225 Difference]: With dead ends: 235 [2025-01-09 16:12:52,104 INFO L226 Difference]: Without dead ends: 120 [2025-01-09 16:12:52,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:12:52,105 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 0 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 16:12:52,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 496 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 16:12:52,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-01-09 16:12:52,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2025-01-09 16:12:52,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 99 states have (on average 1.3636363636363635) internal successors, (135), 99 states have internal predecessors, (135), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-01-09 16:12:52,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 173 transitions. [2025-01-09 16:12:52,113 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 173 transitions. Word has length 158 [2025-01-09 16:12:52,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:12:52,114 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 173 transitions. [2025-01-09 16:12:52,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-01-09 16:12:52,114 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 173 transitions. [2025-01-09 16:12:52,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-01-09 16:12:52,116 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:12:52,116 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:12:52,125 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 16:12:52,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:12:52,317 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:12:52,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:12:52,317 INFO L85 PathProgramCache]: Analyzing trace with hash -344287776, now seen corresponding path program 1 times [2025-01-09 16:12:52,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:12:52,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956068858] [2025-01-09 16:12:52,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:12:52,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:12:52,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-01-09 16:12:52,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-01-09 16:12:52,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:12:52,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:12:52,620 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-01-09 16:12:52,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:12:52,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956068858] [2025-01-09 16:12:52,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956068858] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:12:52,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:12:52,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 16:12:52,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663284499] [2025-01-09 16:12:52,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:12:52,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:12:52,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:12:52,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:12:52,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:12:52,622 INFO L87 Difference]: Start difference. First operand 120 states and 173 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-01-09 16:12:52,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:12:52,805 INFO L93 Difference]: Finished difference Result 237 states and 343 transitions. [2025-01-09 16:12:52,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 16:12:52,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 160 [2025-01-09 16:12:52,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:12:52,807 INFO L225 Difference]: With dead ends: 237 [2025-01-09 16:12:52,807 INFO L226 Difference]: Without dead ends: 120 [2025-01-09 16:12:52,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:12:52,808 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 0 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 16:12:52,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 444 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 16:12:52,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-01-09 16:12:52,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2025-01-09 16:12:52,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 99 states have (on average 1.3535353535353536) internal successors, (134), 99 states have internal predecessors, (134), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-01-09 16:12:52,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 172 transitions. [2025-01-09 16:12:52,815 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 172 transitions. Word has length 160 [2025-01-09 16:12:52,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:12:52,816 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 172 transitions. [2025-01-09 16:12:52,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-01-09 16:12:52,816 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 172 transitions. [2025-01-09 16:12:52,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-01-09 16:12:52,818 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:12:52,818 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:12:52,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 16:12:52,818 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:12:52,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:12:52,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1932635678, now seen corresponding path program 1 times [2025-01-09 16:12:52,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:12:52,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984518228] [2025-01-09 16:12:52,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:12:52,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:12:52,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-01-09 16:12:52,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-01-09 16:12:52,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:12:52,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:12:55,330 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-01-09 16:12:55,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:12:55,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984518228] [2025-01-09 16:12:55,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984518228] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:12:55,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:12:55,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-01-09 16:12:55,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220086734] [2025-01-09 16:12:55,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:12:55,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 16:12:55,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:12:55,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 16:12:55,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-01-09 16:12:55,337 INFO L87 Difference]: Start difference. First operand 120 states and 172 transitions. Second operand has 13 states, 11 states have (on average 6.181818181818182) internal successors, (68), 13 states have internal predecessors, (68), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 4 states have call successors, (19) [2025-01-09 16:12:56,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:12:56,540 INFO L93 Difference]: Finished difference Result 294 states and 419 transitions. [2025-01-09 16:12:56,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 16:12:56,543 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.181818181818182) internal successors, (68), 13 states have internal predecessors, (68), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 4 states have call successors, (19) Word has length 160 [2025-01-09 16:12:56,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:12:56,544 INFO L225 Difference]: With dead ends: 294 [2025-01-09 16:12:56,544 INFO L226 Difference]: Without dead ends: 177 [2025-01-09 16:12:56,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2025-01-09 16:12:56,545 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 369 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-01-09 16:12:56,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 642 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-01-09 16:12:56,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2025-01-09 16:12:56,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 143. [2025-01-09 16:12:56,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 122 states have (on average 1.3524590163934427) internal successors, (165), 122 states have internal predecessors, (165), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-01-09 16:12:56,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 203 transitions. [2025-01-09 16:12:56,555 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 203 transitions. Word has length 160 [2025-01-09 16:12:56,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:12:56,556 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 203 transitions. [2025-01-09 16:12:56,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.181818181818182) internal successors, (68), 13 states have internal predecessors, (68), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 4 states have call successors, (19) [2025-01-09 16:12:56,556 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 203 transitions. [2025-01-09 16:12:56,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-01-09 16:12:56,557 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:12:56,557 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:12:56,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 16:12:56,558 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:12:56,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:12:56,558 INFO L85 PathProgramCache]: Analyzing trace with hash -2047553525, now seen corresponding path program 1 times [2025-01-09 16:12:56,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:12:56,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312020948] [2025-01-09 16:12:56,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:12:56,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:12:56,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-01-09 16:12:56,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-01-09 16:12:56,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:12:56,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:12:58,742 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-01-09 16:12:58,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:12:58,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312020948] [2025-01-09 16:12:58,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312020948] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:12:58,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:12:58,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-01-09 16:12:58,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574449965] [2025-01-09 16:12:58,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:12:58,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 16:12:58,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:12:58,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 16:12:58,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2025-01-09 16:12:58,745 INFO L87 Difference]: Start difference. First operand 143 states and 203 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-01-09 16:13:00,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:13:00,158 INFO L93 Difference]: Finished difference Result 536 states and 756 transitions. [2025-01-09 16:13:00,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 16:13:00,159 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 160 [2025-01-09 16:13:00,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:13:00,161 INFO L225 Difference]: With dead ends: 536 [2025-01-09 16:13:00,161 INFO L226 Difference]: Without dead ends: 396 [2025-01-09 16:13:00,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2025-01-09 16:13:00,162 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 584 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-01-09 16:13:00,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 862 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-01-09 16:13:00,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2025-01-09 16:13:00,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 281. [2025-01-09 16:13:00,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 240 states have (on average 1.35) internal successors, (324), 240 states have internal predecessors, (324), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-01-09 16:13:00,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 400 transitions. [2025-01-09 16:13:00,184 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 400 transitions. Word has length 160 [2025-01-09 16:13:00,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:13:00,185 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 400 transitions. [2025-01-09 16:13:00,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-01-09 16:13:00,185 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 400 transitions. [2025-01-09 16:13:00,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-01-09 16:13:00,186 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:13:00,187 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:13:00,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 16:13:00,187 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:13:00,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:13:00,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1236296521, now seen corresponding path program 1 times [2025-01-09 16:13:00,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:13:00,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82864255] [2025-01-09 16:13:00,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:13:00,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:13:00,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-01-09 16:13:00,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-01-09 16:13:00,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:13:00,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat