./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/forester-heap/dll-sorted-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e8d55036 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/dll-sorted-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97c87a4be2f33468a224d89594f96c367f5837bb79771cd5155d22e1299d7831 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 22:16:32,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 22:16:32,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 22:16:32,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 22:16:32,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 22:16:32,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 22:16:32,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 22:16:32,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 22:16:32,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 22:16:32,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 22:16:32,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 22:16:32,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 22:16:32,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 22:16:32,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 22:16:32,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 22:16:32,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 22:16:32,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 22:16:32,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 22:16:32,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 22:16:32,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 22:16:32,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 22:16:32,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 22:16:32,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 22:16:32,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 22:16:32,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 22:16:32,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 22:16:32,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 22:16:32,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 22:16:32,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 22:16:32,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 22:16:32,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 22:16:32,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 22:16:32,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 22:16:32,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 22:16:32,934 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 22:16:32,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 22:16:32,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 22:16:32,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 22:16:32,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 22:16:32,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 22:16:32,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 22:16:32,938 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-15 22:16:32,967 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 22:16:32,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 22:16:32,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 22:16:32,968 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 22:16:32,969 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 22:16:32,969 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 22:16:32,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 22:16:32,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 22:16:32,970 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 22:16:32,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 22:16:32,971 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 22:16:32,971 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 22:16:32,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 22:16:32,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 22:16:32,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 22:16:32,972 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 22:16:32,972 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 22:16:32,972 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 22:16:32,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 22:16:32,973 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 22:16:32,973 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 22:16:32,973 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 22:16:32,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 22:16:32,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 22:16:32,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 22:16:32,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 22:16:32,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 22:16:32,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 22:16:32,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 22:16:32,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 22:16:32,975 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 22:16:32,975 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 22:16:32,976 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 22:16:32,976 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 22:16:32,976 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97c87a4be2f33468a224d89594f96c367f5837bb79771cd5155d22e1299d7831 [2023-02-15 22:16:33,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 22:16:33,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 22:16:33,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 22:16:33,232 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 22:16:33,233 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 22:16:33,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-sorted-2.i [2023-02-15 22:16:34,317 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 22:16:34,610 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 22:16:34,610 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-2.i [2023-02-15 22:16:34,619 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b6c9a19b/d575b7602caa4193a2369da4e3c5b68e/FLAGa5413e8e9 [2023-02-15 22:16:34,634 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b6c9a19b/d575b7602caa4193a2369da4e3c5b68e [2023-02-15 22:16:34,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 22:16:34,638 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 22:16:34,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 22:16:34,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 22:16:34,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 22:16:34,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:16:34" (1/1) ... [2023-02-15 22:16:34,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5268a03d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:34, skipping insertion in model container [2023-02-15 22:16:34,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:16:34" (1/1) ... [2023-02-15 22:16:34,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 22:16:34,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 22:16:34,921 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22384,22397] [2023-02-15 22:16:34,928 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22614,22627] [2023-02-15 22:16:34,932 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22989,23002] [2023-02-15 22:16:34,932 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23053,23066] [2023-02-15 22:16:34,934 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23184,23197] [2023-02-15 22:16:34,936 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23248,23261] [2023-02-15 22:16:34,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 22:16:34,951 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 22:16:34,974 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22384,22397] [2023-02-15 22:16:34,976 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22614,22627] [2023-02-15 22:16:34,978 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22989,23002] [2023-02-15 22:16:34,979 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23053,23066] [2023-02-15 22:16:34,980 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23184,23197] [2023-02-15 22:16:34,981 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23248,23261] [2023-02-15 22:16:34,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 22:16:35,003 INFO L208 MainTranslator]: Completed translation [2023-02-15 22:16:35,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:35 WrapperNode [2023-02-15 22:16:35,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 22:16:35,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 22:16:35,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 22:16:35,005 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 22:16:35,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:35" (1/1) ... [2023-02-15 22:16:35,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:35" (1/1) ... [2023-02-15 22:16:35,052 INFO L138 Inliner]: procedures = 119, calls = 45, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 197 [2023-02-15 22:16:35,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 22:16:35,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 22:16:35,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 22:16:35,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 22:16:35,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:35" (1/1) ... [2023-02-15 22:16:35,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:35" (1/1) ... [2023-02-15 22:16:35,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:35" (1/1) ... [2023-02-15 22:16:35,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:35" (1/1) ... [2023-02-15 22:16:35,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:35" (1/1) ... [2023-02-15 22:16:35,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:35" (1/1) ... [2023-02-15 22:16:35,078 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:35" (1/1) ... [2023-02-15 22:16:35,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:35" (1/1) ... [2023-02-15 22:16:35,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 22:16:35,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 22:16:35,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 22:16:35,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 22:16:35,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:35" (1/1) ... [2023-02-15 22:16:35,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 22:16:35,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:16:35,112 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 22:16:35,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 22:16:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 22:16:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 22:16:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 22:16:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 22:16:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-15 22:16:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-15 22:16:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 22:16:35,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 22:16:35,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 22:16:35,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 22:16:35,272 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 22:16:35,274 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 22:16:35,719 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 22:16:35,727 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 22:16:35,727 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2023-02-15 22:16:35,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:16:35 BoogieIcfgContainer [2023-02-15 22:16:35,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 22:16:35,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 22:16:35,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 22:16:35,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 22:16:35,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:16:34" (1/3) ... [2023-02-15 22:16:35,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1776c0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:16:35, skipping insertion in model container [2023-02-15 22:16:35,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:16:35" (2/3) ... [2023-02-15 22:16:35,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1776c0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:16:35, skipping insertion in model container [2023-02-15 22:16:35,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:16:35" (3/3) ... [2023-02-15 22:16:35,736 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-sorted-2.i [2023-02-15 22:16:35,750 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 22:16:35,751 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations. [2023-02-15 22:16:35,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 22:16:35,789 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@7fb3a43e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 22:16:35,790 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2023-02-15 22:16:35,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 179 states, 98 states have (on average 2.183673469387755) internal successors, (214), 178 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:35,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-15 22:16:35,798 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:16:35,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-15 22:16:35,799 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-02-15 22:16:35,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:16:35,803 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2023-02-15 22:16:35,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:16:35,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001152222] [2023-02-15 22:16:35,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:16:35,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:16:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:16:36,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:16:36,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:16:36,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001152222] [2023-02-15 22:16:36,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001152222] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:16:36,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:16:36,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 22:16:36,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264774396] [2023-02-15 22:16:36,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:16:36,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 22:16:36,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:16:36,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 22:16:36,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:16:36,044 INFO L87 Difference]: Start difference. First operand has 179 states, 98 states have (on average 2.183673469387755) internal successors, (214), 178 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:36,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:16:36,236 INFO L93 Difference]: Finished difference Result 182 states and 193 transitions. [2023-02-15 22:16:36,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 22:16:36,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-02-15 22:16:36,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:16:36,247 INFO L225 Difference]: With dead ends: 182 [2023-02-15 22:16:36,247 INFO L226 Difference]: Without dead ends: 178 [2023-02-15 22:16:36,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:16:36,252 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 172 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:16:36,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 118 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:16:36,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-02-15 22:16:36,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2023-02-15 22:16:36,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 97 states have (on average 1.907216494845361) internal successors, (185), 173 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:36,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 185 transitions. [2023-02-15 22:16:36,283 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 185 transitions. Word has length 3 [2023-02-15 22:16:36,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:16:36,284 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 185 transitions. [2023-02-15 22:16:36,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:36,284 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 185 transitions. [2023-02-15 22:16:36,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-15 22:16:36,284 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:16:36,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-15 22:16:36,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 22:16:36,285 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-02-15 22:16:36,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:16:36,286 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-02-15 22:16:36,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:16:36,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638336430] [2023-02-15 22:16:36,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:16:36,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:16:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:16:36,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:16:36,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:16:36,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638336430] [2023-02-15 22:16:36,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638336430] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:16:36,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:16:36,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 22:16:36,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721520571] [2023-02-15 22:16:36,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:16:36,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 22:16:36,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:16:36,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 22:16:36,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:16:36,354 INFO L87 Difference]: Start difference. First operand 174 states and 185 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:36,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:16:36,469 INFO L93 Difference]: Finished difference Result 175 states and 186 transitions. [2023-02-15 22:16:36,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 22:16:36,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-02-15 22:16:36,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:16:36,481 INFO L225 Difference]: With dead ends: 175 [2023-02-15 22:16:36,482 INFO L226 Difference]: Without dead ends: 175 [2023-02-15 22:16:36,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:16:36,484 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 167 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:16:36,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 116 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:16:36,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-02-15 22:16:36,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2023-02-15 22:16:36,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 97 states have (on average 1.8762886597938144) internal successors, (182), 170 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:36,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 182 transitions. [2023-02-15 22:16:36,511 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 182 transitions. Word has length 3 [2023-02-15 22:16:36,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:16:36,512 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 182 transitions. [2023-02-15 22:16:36,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:36,512 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 182 transitions. [2023-02-15 22:16:36,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 22:16:36,513 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:16:36,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:16:36,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 22:16:36,513 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-02-15 22:16:36,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:16:36,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112042, now seen corresponding path program 1 times [2023-02-15 22:16:36,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:16:36,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128301311] [2023-02-15 22:16:36,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:16:36,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:16:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:16:36,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:16:36,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:16:36,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128301311] [2023-02-15 22:16:36,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128301311] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:16:36,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:16:36,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 22:16:36,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200488052] [2023-02-15 22:16:36,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:16:36,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 22:16:36,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:16:36,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 22:16:36,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 22:16:36,729 INFO L87 Difference]: Start difference. First operand 171 states and 182 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:36,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:16:36,897 INFO L93 Difference]: Finished difference Result 178 states and 192 transitions. [2023-02-15 22:16:36,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 22:16:36,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-15 22:16:36,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:16:36,900 INFO L225 Difference]: With dead ends: 178 [2023-02-15 22:16:36,900 INFO L226 Difference]: Without dead ends: 178 [2023-02-15 22:16:36,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:16:36,903 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 298 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:16:36,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 89 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:16:36,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-02-15 22:16:36,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 167. [2023-02-15 22:16:36,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 111 states have (on average 1.7027027027027026) internal successors, (189), 166 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:36,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 189 transitions. [2023-02-15 22:16:36,927 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 189 transitions. Word has length 9 [2023-02-15 22:16:36,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:16:36,928 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 189 transitions. [2023-02-15 22:16:36,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:36,928 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 189 transitions. [2023-02-15 22:16:36,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 22:16:36,929 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:16:36,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:16:36,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 22:16:36,929 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-02-15 22:16:36,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:16:36,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112043, now seen corresponding path program 1 times [2023-02-15 22:16:36,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:16:36,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927266278] [2023-02-15 22:16:36,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:16:36,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:16:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:16:37,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:16:37,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:16:37,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927266278] [2023-02-15 22:16:37,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927266278] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:16:37,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:16:37,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 22:16:37,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969207227] [2023-02-15 22:16:37,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:16:37,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 22:16:37,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:16:37,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 22:16:37,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 22:16:37,176 INFO L87 Difference]: Start difference. First operand 167 states and 189 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:37,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:16:37,443 INFO L93 Difference]: Finished difference Result 258 states and 282 transitions. [2023-02-15 22:16:37,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 22:16:37,444 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-15 22:16:37,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:16:37,445 INFO L225 Difference]: With dead ends: 258 [2023-02-15 22:16:37,445 INFO L226 Difference]: Without dead ends: 258 [2023-02-15 22:16:37,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-15 22:16:37,446 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 439 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 22:16:37,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 130 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 22:16:37,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-02-15 22:16:37,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 220. [2023-02-15 22:16:37,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 164 states have (on average 1.6097560975609757) internal successors, (264), 219 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:37,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 264 transitions. [2023-02-15 22:16:37,452 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 264 transitions. Word has length 9 [2023-02-15 22:16:37,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:16:37,452 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 264 transitions. [2023-02-15 22:16:37,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:37,453 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 264 transitions. [2023-02-15 22:16:37,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-15 22:16:37,453 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:16:37,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:16:37,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 22:16:37,454 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-02-15 22:16:37,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:16:37,455 INFO L85 PathProgramCache]: Analyzing trace with hash 233093812, now seen corresponding path program 1 times [2023-02-15 22:16:37,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:16:37,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205981129] [2023-02-15 22:16:37,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:16:37,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:16:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:16:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:16:37,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:16:37,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205981129] [2023-02-15 22:16:37,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205981129] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:16:37,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:16:37,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 22:16:37,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729241996] [2023-02-15 22:16:37,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:16:37,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 22:16:37,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:16:37,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 22:16:37,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:16:37,484 INFO L87 Difference]: Start difference. First operand 220 states and 264 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:37,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:16:37,507 INFO L93 Difference]: Finished difference Result 266 states and 313 transitions. [2023-02-15 22:16:37,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 22:16:37,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-15 22:16:37,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:16:37,510 INFO L225 Difference]: With dead ends: 266 [2023-02-15 22:16:37,510 INFO L226 Difference]: Without dead ends: 266 [2023-02-15 22:16:37,511 INFO L412 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 [2023-02-15 22:16:37,511 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 120 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:16:37,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 235 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:16:37,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-02-15 22:16:37,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 233. [2023-02-15 22:16:37,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 177 states have (on average 1.6045197740112995) internal successors, (284), 232 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:37,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 284 transitions. [2023-02-15 22:16:37,523 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 284 transitions. Word has length 11 [2023-02-15 22:16:37,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:16:37,523 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 284 transitions. [2023-02-15 22:16:37,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:37,524 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 284 transitions. [2023-02-15 22:16:37,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 22:16:37,524 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:16:37,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:16:37,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-15 22:16:37,525 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-02-15 22:16:37,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:16:37,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413642, now seen corresponding path program 1 times [2023-02-15 22:16:37,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:16:37,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938670707] [2023-02-15 22:16:37,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:16:37,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:16:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:16:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:16:37,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:16:37,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938670707] [2023-02-15 22:16:37,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938670707] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:16:37,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:16:37,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 22:16:37,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480672774] [2023-02-15 22:16:37,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:16:37,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 22:16:37,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:16:37,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 22:16:37,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:16:37,712 INFO L87 Difference]: Start difference. First operand 233 states and 284 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:37,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:16:37,894 INFO L93 Difference]: Finished difference Result 232 states and 281 transitions. [2023-02-15 22:16:37,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 22:16:37,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-15 22:16:37,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:16:37,896 INFO L225 Difference]: With dead ends: 232 [2023-02-15 22:16:37,896 INFO L226 Difference]: Without dead ends: 232 [2023-02-15 22:16:37,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-15 22:16:37,897 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 7 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 22:16:37,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 406 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 22:16:37,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-02-15 22:16:37,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2023-02-15 22:16:37,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 177 states have (on average 1.5875706214689265) internal successors, (281), 231 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:37,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 281 transitions. [2023-02-15 22:16:37,902 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 281 transitions. Word has length 12 [2023-02-15 22:16:37,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:16:37,902 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 281 transitions. [2023-02-15 22:16:37,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:37,902 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 281 transitions. [2023-02-15 22:16:37,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 22:16:37,902 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:16:37,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:16:37,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-15 22:16:37,903 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-02-15 22:16:37,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:16:37,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413643, now seen corresponding path program 1 times [2023-02-15 22:16:37,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:16:37,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618993614] [2023-02-15 22:16:37,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:16:37,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:16:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:16:38,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:16:38,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:16:38,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618993614] [2023-02-15 22:16:38,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618993614] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:16:38,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:16:38,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 22:16:38,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570828937] [2023-02-15 22:16:38,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:16:38,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 22:16:38,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:16:38,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 22:16:38,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:16:38,021 INFO L87 Difference]: Start difference. First operand 232 states and 281 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:38,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:16:38,176 INFO L93 Difference]: Finished difference Result 231 states and 278 transitions. [2023-02-15 22:16:38,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 22:16:38,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-15 22:16:38,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:16:38,177 INFO L225 Difference]: With dead ends: 231 [2023-02-15 22:16:38,178 INFO L226 Difference]: Without dead ends: 231 [2023-02-15 22:16:38,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-15 22:16:38,179 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 8 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:16:38,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 426 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:16:38,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-02-15 22:16:38,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2023-02-15 22:16:38,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 177 states have (on average 1.5706214689265536) internal successors, (278), 230 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:38,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 278 transitions. [2023-02-15 22:16:38,184 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 278 transitions. Word has length 12 [2023-02-15 22:16:38,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:16:38,184 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 278 transitions. [2023-02-15 22:16:38,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:38,184 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 278 transitions. [2023-02-15 22:16:38,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 22:16:38,185 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:16:38,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:16:38,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-15 22:16:38,185 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-02-15 22:16:38,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:16:38,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362871, now seen corresponding path program 1 times [2023-02-15 22:16:38,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:16:38,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89652841] [2023-02-15 22:16:38,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:16:38,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:16:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:16:38,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:16:38,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:16:38,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89652841] [2023-02-15 22:16:38,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89652841] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:16:38,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:16:38,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-15 22:16:38,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667031582] [2023-02-15 22:16:38,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:16:38,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 22:16:38,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:16:38,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 22:16:38,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-15 22:16:38,363 INFO L87 Difference]: Start difference. First operand 231 states and 278 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:38,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:16:38,665 INFO L93 Difference]: Finished difference Result 237 states and 279 transitions. [2023-02-15 22:16:38,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 22:16:38,665 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-15 22:16:38,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:16:38,666 INFO L225 Difference]: With dead ends: 237 [2023-02-15 22:16:38,666 INFO L226 Difference]: Without dead ends: 237 [2023-02-15 22:16:38,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-02-15 22:16:38,667 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 296 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 22:16:38,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 289 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 22:16:38,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-02-15 22:16:38,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 230. [2023-02-15 22:16:38,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 177 states have (on average 1.5593220338983051) internal successors, (276), 229 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:38,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 276 transitions. [2023-02-15 22:16:38,672 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 276 transitions. Word has length 16 [2023-02-15 22:16:38,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:16:38,672 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 276 transitions. [2023-02-15 22:16:38,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:38,672 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 276 transitions. [2023-02-15 22:16:38,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 22:16:38,673 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:16:38,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:16:38,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-15 22:16:38,674 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-02-15 22:16:38,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:16:38,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362872, now seen corresponding path program 1 times [2023-02-15 22:16:38,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:16:38,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881195695] [2023-02-15 22:16:38,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:16:38,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:16:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:16:38,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:16:38,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:16:38,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881195695] [2023-02-15 22:16:38,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881195695] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:16:38,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:16:38,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-15 22:16:38,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42152327] [2023-02-15 22:16:38,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:16:38,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 22:16:38,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:16:38,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 22:16:38,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-02-15 22:16:38,940 INFO L87 Difference]: Start difference. First operand 230 states and 276 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:39,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:16:39,469 INFO L93 Difference]: Finished difference Result 232 states and 270 transitions. [2023-02-15 22:16:39,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-15 22:16:39,469 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-15 22:16:39,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:16:39,470 INFO L225 Difference]: With dead ends: 232 [2023-02-15 22:16:39,470 INFO L226 Difference]: Without dead ends: 232 [2023-02-15 22:16:39,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2023-02-15 22:16:39,471 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 294 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 22:16:39,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 388 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 22:16:39,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-02-15 22:16:39,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 216. [2023-02-15 22:16:39,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 169 states have (on average 1.5266272189349113) internal successors, (258), 215 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:39,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 258 transitions. [2023-02-15 22:16:39,475 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 258 transitions. Word has length 16 [2023-02-15 22:16:39,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:16:39,476 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 258 transitions. [2023-02-15 22:16:39,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:39,476 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 258 transitions. [2023-02-15 22:16:39,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 22:16:39,476 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:16:39,476 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:16:39,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-15 22:16:39,477 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-02-15 22:16:39,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:16:39,477 INFO L85 PathProgramCache]: Analyzing trace with hash -961820477, now seen corresponding path program 1 times [2023-02-15 22:16:39,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:16:39,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226910634] [2023-02-15 22:16:39,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:16:39,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:16:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:16:39,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 22:16:39,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:16:39,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226910634] [2023-02-15 22:16:39,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226910634] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:16:39,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:16:39,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 22:16:39,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133664355] [2023-02-15 22:16:39,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:16:39,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 22:16:39,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:16:39,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 22:16:39,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 22:16:39,529 INFO L87 Difference]: Start difference. First operand 216 states and 258 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:39,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:16:39,638 INFO L93 Difference]: Finished difference Result 253 states and 276 transitions. [2023-02-15 22:16:39,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 22:16:39,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-15 22:16:39,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:16:39,640 INFO L225 Difference]: With dead ends: 253 [2023-02-15 22:16:39,643 INFO L226 Difference]: Without dead ends: 253 [2023-02-15 22:16:39,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:16:39,644 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 297 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:16:39,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 202 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:16:39,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-02-15 22:16:39,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 214. [2023-02-15 22:16:39,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 168 states have (on average 1.5119047619047619) internal successors, (254), 213 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:39,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 254 transitions. [2023-02-15 22:16:39,649 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 254 transitions. Word has length 25 [2023-02-15 22:16:39,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:16:39,650 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 254 transitions. [2023-02-15 22:16:39,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:39,650 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 254 transitions. [2023-02-15 22:16:39,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-15 22:16:39,651 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:16:39,651 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:16:39,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-15 22:16:39,651 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-02-15 22:16:39,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:16:39,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1496912174, now seen corresponding path program 1 times [2023-02-15 22:16:39,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:16:39,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006298539] [2023-02-15 22:16:39,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:16:39,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:16:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:16:40,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:16:40,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:16:40,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006298539] [2023-02-15 22:16:40,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006298539] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 22:16:40,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220956474] [2023-02-15 22:16:40,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:16:40,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:16:40,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:16:40,059 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 22:16:40,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 22:16:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:16:40,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-15 22:16:40,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:16:40,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-15 22:16:40,321 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 22:16:40,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-02-15 22:16:40,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 22:16:40,460 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 22:16:40,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-02-15 22:16:40,542 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 22:16:40,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2023-02-15 22:16:40,608 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 22:16:40,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2023-02-15 22:16:40,741 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 22:16:40,743 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:16:40,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2023-02-15 22:16:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:16:40,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 22:16:43,074 INFO L321 Elim1Store]: treesize reduction 5, result has 66.7 percent of original size [2023-02-15 22:16:43,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-02-15 22:16:43,472 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:16:43,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 36 [2023-02-15 22:16:43,496 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:16:43,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 222 treesize of output 189 [2023-02-15 22:16:43,515 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:16:43,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 174 treesize of output 162 [2023-02-15 22:16:43,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 146 [2023-02-15 22:16:43,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:16:43,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220956474] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 22:16:43,954 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 22:16:43,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 14] total 34 [2023-02-15 22:16:43,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253068370] [2023-02-15 22:16:43,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 22:16:43,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-02-15 22:16:43,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:16:43,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-02-15 22:16:43,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1055, Unknown=25, NotChecked=0, Total=1190 [2023-02-15 22:16:43,956 INFO L87 Difference]: Start difference. First operand 214 states and 254 transitions. Second operand has 35 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 35 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:48,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:16:48,162 INFO L93 Difference]: Finished difference Result 427 states and 484 transitions. [2023-02-15 22:16:48,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-15 22:16:48,163 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 35 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-02-15 22:16:48,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:16:48,165 INFO L225 Difference]: With dead ends: 427 [2023-02-15 22:16:48,165 INFO L226 Difference]: Without dead ends: 427 [2023-02-15 22:16:48,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=412, Invalid=2319, Unknown=25, NotChecked=0, Total=2756 [2023-02-15 22:16:48,166 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 998 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-02-15 22:16:48,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 1629 Invalid, 2263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2166 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-02-15 22:16:48,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2023-02-15 22:16:48,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 239. [2023-02-15 22:16:48,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 193 states have (on average 1.471502590673575) internal successors, (284), 238 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:48,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 284 transitions. [2023-02-15 22:16:48,174 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 284 transitions. Word has length 31 [2023-02-15 22:16:48,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:16:48,175 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 284 transitions. [2023-02-15 22:16:48,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 35 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:16:48,175 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 284 transitions. [2023-02-15 22:16:48,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-15 22:16:48,178 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:16:48,178 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:16:48,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 22:16:48,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-15 22:16:48,379 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-02-15 22:16:48,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:16:48,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1496912173, now seen corresponding path program 1 times [2023-02-15 22:16:48,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:16:48,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477539104] [2023-02-15 22:16:48,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:16:48,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:16:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:16:49,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:16:49,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:16:49,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477539104] [2023-02-15 22:16:49,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477539104] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 22:16:49,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637123982] [2023-02-15 22:16:49,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:16:49,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:16:49,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:16:49,121 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 22:16:49,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 22:16:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:16:49,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 46 conjunts are in the unsatisfiable core [2023-02-15 22:16:49,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:16:49,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-15 22:16:49,298 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 22:16:49,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-02-15 22:16:49,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-15 22:16:49,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 22:16:49,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 22:16:49,445 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 22:16:49,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2023-02-15 22:16:49,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-02-15 22:16:49,557 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-15 22:16:49,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-02-15 22:16:49,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 22:16:49,574 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 22:16:49,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2023-02-15 22:16:49,645 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 22:16:49,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2023-02-15 22:16:49,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-02-15 22:16:49,832 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 22:16:49,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-15 22:16:49,839 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 22:16:49,841 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:16:49,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2023-02-15 22:16:49,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:16:49,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 22:16:50,548 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_436 (Array Int Int)) (v_ArrVal_435 (Array Int Int)) (v_ArrVal_439 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_75| Int) (v_ArrVal_440 (Array Int Int))) (or (not (<= |v_ULTIMATE.start_main_~x~0#1.offset_75| |c_ULTIMATE.start_main_~head~0#1.offset|)) (not (<= 0 |v_ULTIMATE.start_main_~x~0#1.offset_75|)) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_435))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_436) .cse0 v_ArrVal_439) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_75|) 12) (select |c_#length| (select (select (store .cse1 .cse0 v_ArrVal_440) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_75|))))))) (forall ((v_ArrVal_436 (Array Int Int)) (v_ArrVal_435 (Array Int Int)) (v_ArrVal_439 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_75| Int)) (or (not (<= |v_ULTIMATE.start_main_~x~0#1.offset_75| |c_ULTIMATE.start_main_~head~0#1.offset|)) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_436) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_435) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_439) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_75|) 8)) (not (<= 0 |v_ULTIMATE.start_main_~x~0#1.offset_75|))))) is different from false [2023-02-15 22:16:50,784 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:16:50,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 74 [2023-02-15 22:16:50,794 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:16:50,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 50 [2023-02-15 22:16:50,808 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:16:50,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 632 treesize of output 567 [2023-02-15 22:16:50,829 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:16:50,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1168 treesize of output 1111 [2023-02-15 22:16:50,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1096 treesize of output 1048 [2023-02-15 22:16:50,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1048 treesize of output 1000 [2023-02-15 22:16:50,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1000 treesize of output 984 [2023-02-15 22:16:50,899 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:16:50,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 984 treesize of output 892 [2023-02-15 22:17:33,870 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:17:33,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 39 [2023-02-15 22:17:33,877 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:17:33,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-02-15 22:17:33,881 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 22:17:33,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-02-15 22:17:33,887 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 22:17:33,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:17:33,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:17:33,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-02-15 22:17:34,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:17:34,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637123982] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 22:17:34,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 22:17:34,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 35 [2023-02-15 22:17:34,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772596558] [2023-02-15 22:17:34,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 22:17:34,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-02-15 22:17:34,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:17:34,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-02-15 22:17:34,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1050, Unknown=19, NotChecked=66, Total=1260 [2023-02-15 22:17:34,130 INFO L87 Difference]: Start difference. First operand 239 states and 284 transitions. Second operand has 36 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 36 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:36,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:17:36,890 INFO L93 Difference]: Finished difference Result 422 states and 479 transitions. [2023-02-15 22:17:36,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-15 22:17:36,891 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 36 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-02-15 22:17:36,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:17:36,892 INFO L225 Difference]: With dead ends: 422 [2023-02-15 22:17:36,892 INFO L226 Difference]: Without dead ends: 422 [2023-02-15 22:17:36,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=492, Invalid=2463, Unknown=19, NotChecked=106, Total=3080 [2023-02-15 22:17:36,894 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 2106 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 2253 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2106 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 2677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 304 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-02-15 22:17:36,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2106 Valid, 1400 Invalid, 2677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2253 Invalid, 0 Unknown, 304 Unchecked, 1.6s Time] [2023-02-15 22:17:36,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-02-15 22:17:36,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 239. [2023-02-15 22:17:36,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 193 states have (on average 1.4663212435233162) internal successors, (283), 238 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:36,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 283 transitions. [2023-02-15 22:17:36,899 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 283 transitions. Word has length 31 [2023-02-15 22:17:36,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:17:36,900 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 283 transitions. [2023-02-15 22:17:36,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 36 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:36,900 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 283 transitions. [2023-02-15 22:17:36,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 22:17:36,901 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:17:36,901 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:17:36,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 22:17:37,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-15 22:17:37,106 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-02-15 22:17:37,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:17:37,107 INFO L85 PathProgramCache]: Analyzing trace with hash 290187840, now seen corresponding path program 1 times [2023-02-15 22:17:37,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:17:37,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635953960] [2023-02-15 22:17:37,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:17:37,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:17:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:17:37,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 22:17:37,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:17:37,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635953960] [2023-02-15 22:17:37,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635953960] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:17:37,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:17:37,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 22:17:37,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93457536] [2023-02-15 22:17:37,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:17:37,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 22:17:37,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:17:37,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 22:17:37,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:17:37,146 INFO L87 Difference]: Start difference. First operand 239 states and 283 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:37,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:17:37,154 INFO L93 Difference]: Finished difference Result 241 states and 285 transitions. [2023-02-15 22:17:37,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 22:17:37,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-02-15 22:17:37,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:17:37,156 INFO L225 Difference]: With dead ends: 241 [2023-02-15 22:17:37,156 INFO L226 Difference]: Without dead ends: 241 [2023-02-15 22:17:37,156 INFO L412 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 [2023-02-15 22:17:37,157 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 0 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:17:37,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 298 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:17:37,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-02-15 22:17:37,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2023-02-15 22:17:37,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 195 states have (on average 1.4615384615384615) internal successors, (285), 240 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:37,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 285 transitions. [2023-02-15 22:17:37,162 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 285 transitions. Word has length 33 [2023-02-15 22:17:37,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:17:37,163 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 285 transitions. [2023-02-15 22:17:37,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:37,163 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 285 transitions. [2023-02-15 22:17:37,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-15 22:17:37,167 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:17:37,168 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:17:37,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-15 22:17:37,168 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-02-15 22:17:37,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:17:37,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2033494590, now seen corresponding path program 1 times [2023-02-15 22:17:37,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:17:37,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723235155] [2023-02-15 22:17:37,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:17:37,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:17:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:17:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 22:17:37,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:17:37,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723235155] [2023-02-15 22:17:37,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723235155] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:17:37,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:17:37,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 22:17:37,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635995522] [2023-02-15 22:17:37,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:17:37,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 22:17:37,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:17:37,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 22:17:37,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-02-15 22:17:37,309 INFO L87 Difference]: Start difference. First operand 241 states and 285 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:37,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:17:37,529 INFO L93 Difference]: Finished difference Result 258 states and 304 transitions. [2023-02-15 22:17:37,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 22:17:37,529 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-02-15 22:17:37,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:17:37,530 INFO L225 Difference]: With dead ends: 258 [2023-02-15 22:17:37,530 INFO L226 Difference]: Without dead ends: 258 [2023-02-15 22:17:37,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-02-15 22:17:37,531 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 34 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 22:17:37,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 619 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 22:17:37,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-02-15 22:17:37,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 249. [2023-02-15 22:17:37,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 203 states have (on average 1.4482758620689655) internal successors, (294), 248 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:37,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 294 transitions. [2023-02-15 22:17:37,535 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 294 transitions. Word has length 36 [2023-02-15 22:17:37,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:17:37,536 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 294 transitions. [2023-02-15 22:17:37,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:37,536 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 294 transitions. [2023-02-15 22:17:37,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-15 22:17:37,537 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:17:37,537 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:17:37,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-15 22:17:37,537 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-02-15 22:17:37,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:17:37,538 INFO L85 PathProgramCache]: Analyzing trace with hash 2033554172, now seen corresponding path program 1 times [2023-02-15 22:17:37,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:17:37,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070378419] [2023-02-15 22:17:37,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:17:37,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:17:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:17:37,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 22:17:37,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:17:37,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070378419] [2023-02-15 22:17:37,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070378419] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:17:37,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:17:37,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 22:17:37,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301107202] [2023-02-15 22:17:37,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:17:37,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 22:17:37,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:17:37,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 22:17:37,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:17:37,595 INFO L87 Difference]: Start difference. First operand 249 states and 294 transitions. Second operand has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:37,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:17:37,655 INFO L93 Difference]: Finished difference Result 246 states and 286 transitions. [2023-02-15 22:17:37,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 22:17:37,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-02-15 22:17:37,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:17:37,657 INFO L225 Difference]: With dead ends: 246 [2023-02-15 22:17:37,658 INFO L226 Difference]: Without dead ends: 246 [2023-02-15 22:17:37,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:17:37,659 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 78 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:17:37,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 170 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:17:37,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-02-15 22:17:37,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 245. [2023-02-15 22:17:37,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 203 states have (on average 1.4088669950738917) internal successors, (286), 244 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:37,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 286 transitions. [2023-02-15 22:17:37,664 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 286 transitions. Word has length 36 [2023-02-15 22:17:37,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:17:37,664 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 286 transitions. [2023-02-15 22:17:37,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:37,665 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 286 transitions. [2023-02-15 22:17:37,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-15 22:17:37,666 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:17:37,667 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:17:37,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-15 22:17:37,667 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-02-15 22:17:37,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:17:37,668 INFO L85 PathProgramCache]: Analyzing trace with hash 2033554173, now seen corresponding path program 1 times [2023-02-15 22:17:37,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:17:37,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485848618] [2023-02-15 22:17:37,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:17:37,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:17:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:17:37,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 22:17:37,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:17:37,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485848618] [2023-02-15 22:17:37,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485848618] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:17:37,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:17:37,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 22:17:37,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84256100] [2023-02-15 22:17:37,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:17:37,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 22:17:37,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:17:37,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 22:17:37,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:17:37,742 INFO L87 Difference]: Start difference. First operand 245 states and 286 transitions. Second operand has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:37,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:17:37,809 INFO L93 Difference]: Finished difference Result 241 states and 278 transitions. [2023-02-15 22:17:37,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 22:17:37,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-02-15 22:17:37,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:17:37,810 INFO L225 Difference]: With dead ends: 241 [2023-02-15 22:17:37,810 INFO L226 Difference]: Without dead ends: 241 [2023-02-15 22:17:37,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:17:37,811 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 82 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:17:37,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 148 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:17:37,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-02-15 22:17:37,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2023-02-15 22:17:37,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 203 states have (on average 1.3694581280788178) internal successors, (278), 240 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:37,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 278 transitions. [2023-02-15 22:17:37,814 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 278 transitions. Word has length 36 [2023-02-15 22:17:37,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:17:37,815 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 278 transitions. [2023-02-15 22:17:37,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:37,815 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 278 transitions. [2023-02-15 22:17:37,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-15 22:17:37,815 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:17:37,815 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:17:37,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-15 22:17:37,815 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-02-15 22:17:37,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:17:37,816 INFO L85 PathProgramCache]: Analyzing trace with hash 817273180, now seen corresponding path program 1 times [2023-02-15 22:17:37,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:17:37,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152153690] [2023-02-15 22:17:37,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:17:37,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:17:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:17:37,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 22:17:37,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:17:37,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152153690] [2023-02-15 22:17:37,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152153690] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:17:37,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:17:37,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 22:17:37,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551135526] [2023-02-15 22:17:37,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:17:37,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 22:17:37,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:17:37,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 22:17:37,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 22:17:37,899 INFO L87 Difference]: Start difference. First operand 241 states and 278 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:38,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:17:38,140 INFO L93 Difference]: Finished difference Result 261 states and 299 transitions. [2023-02-15 22:17:38,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 22:17:38,140 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-02-15 22:17:38,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:17:38,142 INFO L225 Difference]: With dead ends: 261 [2023-02-15 22:17:38,142 INFO L226 Difference]: Without dead ends: 261 [2023-02-15 22:17:38,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-15 22:17:38,142 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 114 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 22:17:38,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 335 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 22:17:38,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-02-15 22:17:38,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 240. [2023-02-15 22:17:38,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 203 states have (on average 1.3645320197044335) internal successors, (277), 239 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:38,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 277 transitions. [2023-02-15 22:17:38,147 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 277 transitions. Word has length 36 [2023-02-15 22:17:38,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:17:38,147 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 277 transitions. [2023-02-15 22:17:38,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:38,147 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 277 transitions. [2023-02-15 22:17:38,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-15 22:17:38,148 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:17:38,149 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:17:38,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-15 22:17:38,149 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-02-15 22:17:38,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:17:38,149 INFO L85 PathProgramCache]: Analyzing trace with hash 817273181, now seen corresponding path program 1 times [2023-02-15 22:17:38,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:17:38,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883057798] [2023-02-15 22:17:38,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:17:38,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:17:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:17:38,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:17:38,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:17:38,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883057798] [2023-02-15 22:17:38,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883057798] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 22:17:38,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647417721] [2023-02-15 22:17:38,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:17:38,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:17:38,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:17:38,641 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 22:17:38,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 22:17:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:17:38,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 46 conjunts are in the unsatisfiable core [2023-02-15 22:17:38,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:17:38,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-15 22:17:38,821 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 22:17:38,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-02-15 22:17:38,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 22:17:38,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 22:17:38,950 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 22:17:38,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-02-15 22:17:38,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-02-15 22:17:38,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-02-15 22:17:39,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 22:17:39,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-15 22:17:39,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-02-15 22:17:39,262 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 22:17:39,264 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:17:39,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 17 [2023-02-15 22:17:39,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:17:39,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 22:17:39,370 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:17:39,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 36 [2023-02-15 22:17:39,942 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:17:39,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2023-02-15 22:17:39,949 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:17:39,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2023-02-15 22:17:39,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2023-02-15 22:17:39,961 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:17:39,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 161 [2023-02-15 22:17:39,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 118 [2023-02-15 22:17:39,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 132 [2023-02-15 22:17:39,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 98 [2023-02-15 22:17:40,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:17:40,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647417721] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 22:17:40,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 22:17:40,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 42 [2023-02-15 22:17:40,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896994977] [2023-02-15 22:17:40,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 22:17:40,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-02-15 22:17:40,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:17:40,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-02-15 22:17:40,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1625, Unknown=18, NotChecked=0, Total=1806 [2023-02-15 22:17:40,302 INFO L87 Difference]: Start difference. First operand 240 states and 277 transitions. Second operand has 43 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 43 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:43,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:17:43,833 INFO L93 Difference]: Finished difference Result 549 states and 622 transitions. [2023-02-15 22:17:43,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-02-15 22:17:43,834 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 43 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-02-15 22:17:43,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:17:43,836 INFO L225 Difference]: With dead ends: 549 [2023-02-15 22:17:43,836 INFO L226 Difference]: Without dead ends: 549 [2023-02-15 22:17:43,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2800 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1687, Invalid=8801, Unknown=18, NotChecked=0, Total=10506 [2023-02-15 22:17:43,839 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 2488 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 2083 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2488 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 2083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-02-15 22:17:43,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2488 Valid, 1672 Invalid, 2303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 2083 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-02-15 22:17:43,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2023-02-15 22:17:43,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 265. [2023-02-15 22:17:43,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 235 states have (on average 1.3021276595744682) internal successors, (306), 264 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:43,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 306 transitions. [2023-02-15 22:17:43,846 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 306 transitions. Word has length 36 [2023-02-15 22:17:43,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:17:43,846 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 306 transitions. [2023-02-15 22:17:43,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 43 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:43,847 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 306 transitions. [2023-02-15 22:17:43,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-15 22:17:43,848 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:17:43,848 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:17:43,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 22:17:44,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-15 22:17:44,056 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-02-15 22:17:44,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:17:44,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1419322487, now seen corresponding path program 1 times [2023-02-15 22:17:44,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:17:44,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248945171] [2023-02-15 22:17:44,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:17:44,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:17:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:17:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 22:17:44,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:17:44,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248945171] [2023-02-15 22:17:44,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248945171] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:17:44,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:17:44,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 22:17:44,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346729661] [2023-02-15 22:17:44,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:17:44,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 22:17:44,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:17:44,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 22:17:44,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 22:17:44,165 INFO L87 Difference]: Start difference. First operand 265 states and 306 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:44,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:17:44,391 INFO L93 Difference]: Finished difference Result 285 states and 327 transitions. [2023-02-15 22:17:44,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 22:17:44,391 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-02-15 22:17:44,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:17:44,392 INFO L225 Difference]: With dead ends: 285 [2023-02-15 22:17:44,392 INFO L226 Difference]: Without dead ends: 285 [2023-02-15 22:17:44,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-15 22:17:44,393 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 101 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 22:17:44,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 334 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 22:17:44,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-02-15 22:17:44,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 271. [2023-02-15 22:17:44,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 241 states have (on average 1.3070539419087137) internal successors, (315), 270 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:44,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 315 transitions. [2023-02-15 22:17:44,397 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 315 transitions. Word has length 40 [2023-02-15 22:17:44,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:17:44,398 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 315 transitions. [2023-02-15 22:17:44,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:44,398 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 315 transitions. [2023-02-15 22:17:44,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-15 22:17:44,399 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:17:44,399 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:17:44,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-02-15 22:17:44,399 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-02-15 22:17:44,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:17:44,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1419322486, now seen corresponding path program 1 times [2023-02-15 22:17:44,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:17:44,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833138844] [2023-02-15 22:17:44,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:17:44,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:17:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:17:44,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:17:44,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:17:44,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833138844] [2023-02-15 22:17:44,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833138844] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 22:17:44,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685303619] [2023-02-15 22:17:44,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:17:44,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:17:44,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:17:44,900 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 22:17:44,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 22:17:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:17:45,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 22:17:45,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:17:45,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-02-15 22:17:45,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-02-15 22:17:45,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 22:17:45,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:17:45,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685303619] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:17:45,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 22:17:45,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-02-15 22:17:45,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539948112] [2023-02-15 22:17:45,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:17:45,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 22:17:45,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:17:45,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 22:17:45,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2023-02-15 22:17:45,143 INFO L87 Difference]: Start difference. First operand 271 states and 315 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:45,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:17:45,398 INFO L93 Difference]: Finished difference Result 280 states and 322 transitions. [2023-02-15 22:17:45,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 22:17:45,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-02-15 22:17:45,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:17:45,400 INFO L225 Difference]: With dead ends: 280 [2023-02-15 22:17:45,400 INFO L226 Difference]: Without dead ends: 280 [2023-02-15 22:17:45,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-02-15 22:17:45,401 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 53 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 22:17:45,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 412 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 22:17:45,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-02-15 22:17:45,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 269. [2023-02-15 22:17:45,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 241 states have (on average 1.2863070539419088) internal successors, (310), 268 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:45,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 310 transitions. [2023-02-15 22:17:45,405 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 310 transitions. Word has length 40 [2023-02-15 22:17:45,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:17:45,405 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 310 transitions. [2023-02-15 22:17:45,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 22:17:45,405 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 310 transitions. [2023-02-15 22:17:45,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-15 22:17:45,406 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:17:45,406 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:17:45,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 22:17:45,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:17:45,612 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-02-15 22:17:45,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:17:45,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1458488866, now seen corresponding path program 1 times [2023-02-15 22:17:45,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:17:45,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999465112] [2023-02-15 22:17:45,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:17:45,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:17:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:17:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:17:46,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:17:46,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999465112] [2023-02-15 22:17:46,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999465112] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 22:17:46,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509859246] [2023-02-15 22:17:46,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:17:46,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:17:46,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:17:46,194 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 22:17:46,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 22:17:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:17:46,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 64 conjunts are in the unsatisfiable core [2023-02-15 22:17:46,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:17:46,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-15 22:17:46,387 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 22:17:46,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-02-15 22:17:46,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 22:17:46,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 22:17:46,524 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 22:17:46,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-02-15 22:17:46,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-02-15 22:17:46,634 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-02-15 22:17:46,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2023-02-15 22:17:46,646 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 22:17:46,654 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-02-15 22:17:46,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2023-02-15 22:17:46,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:17:46,754 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 22:17:46,757 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 22:17:46,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 70 [2023-02-15 22:17:46,772 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-02-15 22:17:46,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 58 [2023-02-15 22:17:47,200 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 22:17:47,202 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 22:17:47,203 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 22:17:47,210 INFO L321 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2023-02-15 22:17:47,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 69 treesize of output 42 [2023-02-15 22:17:47,218 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 22:17:47,222 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-15 22:17:47,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 22 [2023-02-15 22:17:47,228 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:17:47,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 22:17:59,281 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:17:59,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 657 treesize of output 506 [2023-02-15 22:17:59,300 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:17:59,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 497 treesize of output 362 [2023-02-15 22:18:05,179 WARN L233 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 217 DAG size of output: 185 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-02-15 22:18:05,180 INFO L321 Elim1Store]: treesize reduction 238, result has 62.3 percent of original size [2023-02-15 22:18:05,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 14 new quantified variables, introduced 45 case distinctions, treesize of input 16412 treesize of output 15014 [2023-02-15 22:18:05,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:18:07,721 INFO L321 Elim1Store]: treesize reduction 396, result has 63.3 percent of original size [2023-02-15 22:18:07,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 15 new quantified variables, introduced 66 case distinctions, treesize of input 115882 treesize of output 102536 [2023-02-15 22:18:10,006 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:18:10,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 218578 treesize of output 191678 [2023-02-15 22:18:20,536 WARN L233 SmtUtils]: Spent 10.52s on a formula simplification. DAG size of input: 3210 DAG size of output: 3204 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-02-15 22:18:22,146 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:18:22,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 201695 treesize of output 196303 [2023-02-15 22:18:26,873 INFO L321 Elim1Store]: treesize reduction 292, result has 54.7 percent of original size [2023-02-15 22:18:26,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 236153 treesize of output 229111 [2023-02-15 22:18:32,266 WARN L233 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 3719 DAG size of output: 3705 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-02-15 22:18:33,318 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 22:18:33,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 318252 treesize of output 292866