./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 389f662f7096bd36438270dc54f296be4073de8eeb864b893c17044d6fb4cc06 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 11:09:32,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 11:09:32,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 11:09:32,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 11:09:32,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 11:09:32,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 11:09:32,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 11:09:32,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 11:09:32,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 11:09:32,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 11:09:32,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 11:09:32,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 11:09:32,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 11:09:32,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 11:09:32,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 11:09:32,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 11:09:32,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 11:09:32,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 11:09:32,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 11:09:32,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 11:09:32,921 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 11:09:32,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 11:09:32,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 11:09:32,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 11:09:32,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 11:09:32,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 11:09:32,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 11:09:32,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 11:09:32,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 11:09:32,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 11:09:32,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 11:09:32,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 11:09:32,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 11:09:32,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 11:09:32,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 11:09:32,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 11:09:32,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 11:09:32,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 11:09:32,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 11:09:32,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 11:09:32,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 11:09:32,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 11:09:32,933 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 11:09:32,965 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 11:09:32,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 11:09:32,965 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 11:09:32,966 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 11:09:32,966 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 11:09:32,966 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 11:09:32,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 11:09:32,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 11:09:32,967 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 11:09:32,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 11:09:32,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 11:09:32,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 11:09:32,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 11:09:32,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 11:09:32,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 11:09:32,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 11:09:32,969 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 11:09:32,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 11:09:32,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 11:09:32,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 11:09:32,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 11:09:32,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:09:32,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 11:09:32,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 11:09:32,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 11:09:32,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 11:09:32,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 11:09:32,971 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 11:09:32,971 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 11:09:32,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 11:09:32,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 389f662f7096bd36438270dc54f296be4073de8eeb864b893c17044d6fb4cc06 [2022-07-21 11:09:33,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 11:09:33,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 11:09:33,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 11:09:33,255 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 11:09:33,256 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 11:09:33,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2022-07-21 11:09:33,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3d5c6a11/2469c8a9648f418bb5b4be38fa7cf2c0/FLAG5de1b8d9a [2022-07-21 11:09:33,912 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 11:09:33,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2022-07-21 11:09:33,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3d5c6a11/2469c8a9648f418bb5b4be38fa7cf2c0/FLAG5de1b8d9a [2022-07-21 11:09:34,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3d5c6a11/2469c8a9648f418bb5b4be38fa7cf2c0 [2022-07-21 11:09:34,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 11:09:34,335 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 11:09:34,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 11:09:34,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 11:09:34,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 11:09:34,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:09:34" (1/1) ... [2022-07-21 11:09:34,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60973003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:34, skipping insertion in model container [2022-07-21 11:09:34,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:09:34" (1/1) ... [2022-07-21 11:09:34,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 11:09:34,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 11:09:35,348 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i[163507,163520] [2022-07-21 11:09:35,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:09:35,706 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 11:09:35,816 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i[163507,163520] [2022-07-21 11:09:35,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:09:35,941 INFO L208 MainTranslator]: Completed translation [2022-07-21 11:09:35,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:35 WrapperNode [2022-07-21 11:09:35,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 11:09:35,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 11:09:35,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 11:09:35,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 11:09:35,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:35" (1/1) ... [2022-07-21 11:09:35,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:35" (1/1) ... [2022-07-21 11:09:36,086 INFO L137 Inliner]: procedures = 176, calls = 448, calls flagged for inlining = 92, calls inlined = 85, statements flattened = 1769 [2022-07-21 11:09:36,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 11:09:36,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 11:09:36,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 11:09:36,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 11:09:36,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:35" (1/1) ... [2022-07-21 11:09:36,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:35" (1/1) ... [2022-07-21 11:09:36,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:35" (1/1) ... [2022-07-21 11:09:36,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:35" (1/1) ... [2022-07-21 11:09:36,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:35" (1/1) ... [2022-07-21 11:09:36,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:35" (1/1) ... [2022-07-21 11:09:36,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:35" (1/1) ... [2022-07-21 11:09:36,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 11:09:36,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 11:09:36,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 11:09:36,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 11:09:36,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:35" (1/1) ... [2022-07-21 11:09:36,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:09:36,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:09:36,229 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) [2022-07-21 11:09:36,230 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 [2022-07-21 11:09:36,254 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-21 11:09:36,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-21 11:09:36,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_15 [2022-07-21 11:09:36,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_15 [2022-07-21 11:09:36,283 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_poll [2022-07-21 11:09:36,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_poll [2022-07-21 11:09:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-21 11:09:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-07-21 11:09:36,284 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-07-21 11:09:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 11:09:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 11:09:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 11:09:36,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 11:09:36,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 11:09:36,285 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-07-21 11:09:36,285 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-07-21 11:09:36,285 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2022-07-21 11:09:36,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2022-07-21 11:09:36,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 11:09:36,285 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 11:09:36,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-07-21 11:09:36,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-07-21 11:09:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 11:09:36,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 11:09:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure spin_trylock_bh [2022-07-21 11:09:36,286 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_trylock_bh [2022-07-21 11:09:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-21 11:09:36,286 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-21 11:09:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-07-21 11:09:36,286 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-07-21 11:09:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-21 11:09:36,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-21 11:09:36,287 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_synctty_ioctl [2022-07-21 11:09:36,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_synctty_ioctl [2022-07-21 11:09:36,287 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 11:09:36,287 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 11:09:36,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 11:09:36,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 11:09:36,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 11:09:36,288 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-07-21 11:09:36,288 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-07-21 11:09:36,288 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_close [2022-07-21 11:09:36,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_close [2022-07-21 11:09:36,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 11:09:36,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 11:09:36,288 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-21 11:09:36,288 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-21 11:09:36,288 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_print_buffer [2022-07-21 11:09:36,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_print_buffer [2022-07-21 11:09:36,289 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 11:09:36,289 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 11:09:36,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 11:09:36,289 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-07-21 11:09:36,289 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-07-21 11:09:36,289 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-21 11:09:36,289 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-21 11:09:36,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 11:09:36,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 11:09:36,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 11:09:36,290 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-07-21 11:09:36,290 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-07-21 11:09:36,290 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-07-21 11:09:36,290 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-07-21 11:09:36,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 11:09:36,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-07-21 11:09:36,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-07-21 11:09:36,291 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-07-21 11:09:36,291 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-07-21 11:09:36,291 INFO L130 BoogieDeclarations]: Found specification of procedure sp_put [2022-07-21 11:09:36,291 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_put [2022-07-21 11:09:36,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 11:09:36,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 11:09:36,294 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-07-21 11:09:36,294 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-07-21 11:09:36,295 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_hangup [2022-07-21 11:09:36,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_hangup [2022-07-21 11:09:36,295 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-21 11:09:36,295 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-21 11:09:36,295 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-21 11:09:36,295 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-21 11:09:36,295 INFO L130 BoogieDeclarations]: Found specification of procedure sp_get [2022-07-21 11:09:36,295 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_get [2022-07-21 11:09:36,296 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-21 11:09:36,296 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-21 11:09:36,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 11:09:36,296 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-07-21 11:09:36,296 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-07-21 11:09:36,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-21 11:09:36,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-21 11:09:36,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-21 11:09:36,296 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-21 11:09:36,297 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-21 11:09:36,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 11:09:36,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 11:09:36,297 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_push [2022-07-21 11:09:36,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_push [2022-07-21 11:09:36,648 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 11:09:36,651 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 11:09:36,738 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 11:09:37,573 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 11:09:37,581 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 11:09:37,581 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-21 11:09:37,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:09:37 BoogieIcfgContainer [2022-07-21 11:09:37,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 11:09:37,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 11:09:37,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 11:09:37,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 11:09:37,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:09:34" (1/3) ... [2022-07-21 11:09:37,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@363edde6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:09:37, skipping insertion in model container [2022-07-21 11:09:37,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:35" (2/3) ... [2022-07-21 11:09:37,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@363edde6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:09:37, skipping insertion in model container [2022-07-21 11:09:37,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:09:37" (3/3) ... [2022-07-21 11:09:37,588 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2022-07-21 11:09:37,598 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 11:09:37,598 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 11:09:37,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 11:09:37,641 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@184078f5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@ab95eef [2022-07-21 11:09:37,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 11:09:37,646 INFO L276 IsEmpty]: Start isEmpty. Operand has 644 states, 483 states have (on average 1.391304347826087) internal successors, (672), 499 states have internal predecessors, (672), 120 states have call successors, (120), 40 states have call predecessors, (120), 39 states have return successors, (116), 114 states have call predecessors, (116), 116 states have call successors, (116) [2022-07-21 11:09:37,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-21 11:09:37,655 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:09:37,656 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:09:37,656 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:09:37,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:09:37,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1758611482, now seen corresponding path program 1 times [2022-07-21 11:09:37,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:09:37,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049938904] [2022-07-21 11:09:37,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:09:37,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:09:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:37,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:09:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:37,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:09:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:37,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:09:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:37,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:09:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:37,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:09:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:37,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:09:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:37,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:09:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:37,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:09:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:37,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:09:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:37,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:09:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:37,988 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-21 11:09:37,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:09:37,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049938904] [2022-07-21 11:09:37,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049938904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:09:37,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:09:37,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 11:09:37,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513324593] [2022-07-21 11:09:37,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:09:37,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 11:09:37,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:09:38,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 11:09:38,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 11:09:38,017 INFO L87 Difference]: Start difference. First operand has 644 states, 483 states have (on average 1.391304347826087) internal successors, (672), 499 states have internal predecessors, (672), 120 states have call successors, (120), 40 states have call predecessors, (120), 39 states have return successors, (116), 114 states have call predecessors, (116), 116 states have call successors, (116) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-21 11:09:39,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:09:39,389 INFO L93 Difference]: Finished difference Result 2033 states and 2996 transitions. [2022-07-21 11:09:39,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 11:09:39,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 78 [2022-07-21 11:09:39,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:09:39,415 INFO L225 Difference]: With dead ends: 2033 [2022-07-21 11:09:39,416 INFO L226 Difference]: Without dead ends: 1378 [2022-07-21 11:09:39,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:09:39,426 INFO L413 NwaCegarLoop]: 980 mSDtfsCounter, 1248 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 11:09:39,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1337 Valid, 1947 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 11:09:39,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2022-07-21 11:09:39,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1222. [2022-07-21 11:09:39,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 926 states have (on average 1.3736501079913608) internal successors, (1272), 946 states have internal predecessors, (1272), 219 states have call successors, (219), 77 states have call predecessors, (219), 76 states have return successors, (218), 214 states have call predecessors, (218), 218 states have call successors, (218) [2022-07-21 11:09:39,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1709 transitions. [2022-07-21 11:09:39,531 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1709 transitions. Word has length 78 [2022-07-21 11:09:39,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:09:39,531 INFO L495 AbstractCegarLoop]: Abstraction has 1222 states and 1709 transitions. [2022-07-21 11:09:39,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-21 11:09:39,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1709 transitions. [2022-07-21 11:09:39,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-21 11:09:39,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:09:39,535 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:09:39,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 11:09:39,536 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:09:39,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:09:39,536 INFO L85 PathProgramCache]: Analyzing trace with hash -152487068, now seen corresponding path program 1 times [2022-07-21 11:09:39,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:09:39,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672619849] [2022-07-21 11:09:39,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:09:39,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:09:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:39,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:09:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:39,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:09:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:39,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:09:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:39,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:09:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:39,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:09:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:39,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:09:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:39,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:09:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:39,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:09:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:39,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:09:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:39,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:09:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:39,661 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-21 11:09:39,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:09:39,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672619849] [2022-07-21 11:09:39,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672619849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:09:39,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:09:39,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:09:39,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231202629] [2022-07-21 11:09:39,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:09:39,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:09:39,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:09:39,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:09:39,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:09:39,664 INFO L87 Difference]: Start difference. First operand 1222 states and 1709 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-21 11:09:41,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:09:41,174 INFO L93 Difference]: Finished difference Result 3917 states and 5611 transitions. [2022-07-21 11:09:41,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:09:41,175 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 82 [2022-07-21 11:09:41,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:09:41,186 INFO L225 Difference]: With dead ends: 3917 [2022-07-21 11:09:41,186 INFO L226 Difference]: Without dead ends: 2713 [2022-07-21 11:09:41,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:09:41,190 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 1267 mSDsluCounter, 2175 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 3156 SdHoareTripleChecker+Invalid, 2011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:09:41,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1358 Valid, 3156 Invalid, 2011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 11:09:41,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2022-07-21 11:09:41,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2509. [2022-07-21 11:09:41,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 1903 states have (on average 1.3751970572779821) internal successors, (2617), 1951 states have internal predecessors, (2617), 443 states have call successors, (443), 153 states have call predecessors, (443), 162 states have return successors, (500), 438 states have call predecessors, (500), 442 states have call successors, (500) [2022-07-21 11:09:41,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 3560 transitions. [2022-07-21 11:09:41,269 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 3560 transitions. Word has length 82 [2022-07-21 11:09:41,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:09:41,269 INFO L495 AbstractCegarLoop]: Abstraction has 2509 states and 3560 transitions. [2022-07-21 11:09:41,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-21 11:09:41,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 3560 transitions. [2022-07-21 11:09:41,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-21 11:09:41,276 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:09:41,276 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:09:41,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 11:09:41,276 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:09:41,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:09:41,277 INFO L85 PathProgramCache]: Analyzing trace with hash -950375967, now seen corresponding path program 1 times [2022-07-21 11:09:41,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:09:41,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509595424] [2022-07-21 11:09:41,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:09:41,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:09:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:41,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:09:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:41,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:09:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:41,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:09:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:41,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:09:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:41,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:09:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:41,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:09:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:41,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:09:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:41,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:09:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:41,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:09:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:41,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:09:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:41,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 11:09:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:41,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 11:09:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:41,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:09:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:41,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:41,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 11:09:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:41,519 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-21 11:09:41,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:09:41,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509595424] [2022-07-21 11:09:41,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509595424] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:09:41,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:09:41,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 11:09:41,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135304092] [2022-07-21 11:09:41,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:09:41,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 11:09:41,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:09:41,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 11:09:41,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:09:41,523 INFO L87 Difference]: Start difference. First operand 2509 states and 3560 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 11:09:43,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:09:43,148 INFO L93 Difference]: Finished difference Result 6827 states and 9761 transitions. [2022-07-21 11:09:43,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 11:09:43,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2022-07-21 11:09:43,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:09:43,165 INFO L225 Difference]: With dead ends: 6827 [2022-07-21 11:09:43,165 INFO L226 Difference]: Without dead ends: 4342 [2022-07-21 11:09:43,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-07-21 11:09:43,176 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 1615 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1690 SdHoareTripleChecker+Valid, 2489 SdHoareTripleChecker+Invalid, 2107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:09:43,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1690 Valid, 2489 Invalid, 2107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 11:09:43,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4342 states. [2022-07-21 11:09:43,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4342 to 3931. [2022-07-21 11:09:43,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3931 states, 2993 states have (on average 1.3742064817908453) internal successors, (4113), 3055 states have internal predecessors, (4113), 659 states have call successors, (659), 249 states have call predecessors, (659), 278 states have return successors, (777), 662 states have call predecessors, (777), 658 states have call successors, (777) [2022-07-21 11:09:43,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3931 states to 3931 states and 5549 transitions. [2022-07-21 11:09:43,322 INFO L78 Accepts]: Start accepts. Automaton has 3931 states and 5549 transitions. Word has length 128 [2022-07-21 11:09:43,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:09:43,325 INFO L495 AbstractCegarLoop]: Abstraction has 3931 states and 5549 transitions. [2022-07-21 11:09:43,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 11:09:43,325 INFO L276 IsEmpty]: Start isEmpty. Operand 3931 states and 5549 transitions. [2022-07-21 11:09:43,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-21 11:09:43,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:09:43,335 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:09:43,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 11:09:43,337 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:09:43,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:09:43,338 INFO L85 PathProgramCache]: Analyzing trace with hash -944835305, now seen corresponding path program 1 times [2022-07-21 11:09:43,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:09:43,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943718673] [2022-07-21 11:09:43,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:09:43,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:09:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:43,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:09:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:43,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:09:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:43,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:09:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:43,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:09:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:43,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:09:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:43,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:09:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:43,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:09:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:43,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:09:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:43,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:09:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:43,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:09:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:43,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 11:09:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:43,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:43,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:09:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:43,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 11:09:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:43,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:43,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:09:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:43,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 11:09:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:43,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-21 11:09:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:43,517 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-21 11:09:43,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:09:43,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943718673] [2022-07-21 11:09:43,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943718673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:09:43,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:09:43,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:09:43,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284937280] [2022-07-21 11:09:43,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:09:43,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:09:43,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:09:43,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:09:43,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:09:43,519 INFO L87 Difference]: Start difference. First operand 3931 states and 5549 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 11:09:44,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:09:44,991 INFO L93 Difference]: Finished difference Result 9990 states and 14092 transitions. [2022-07-21 11:09:44,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 11:09:44,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 149 [2022-07-21 11:09:44,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:09:45,019 INFO L225 Difference]: With dead ends: 9990 [2022-07-21 11:09:45,019 INFO L226 Difference]: Without dead ends: 6083 [2022-07-21 11:09:45,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:09:45,033 INFO L413 NwaCegarLoop]: 1197 mSDtfsCounter, 1046 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 11:09:45,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 2742 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 11:09:45,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6083 states. [2022-07-21 11:09:45,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6083 to 5590. [2022-07-21 11:09:45,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5590 states, 4255 states have (on average 1.3635722679200941) internal successors, (5802), 4361 states have internal predecessors, (5802), 906 states have call successors, (906), 383 states have call predecessors, (906), 428 states have return successors, (1074), 909 states have call predecessors, (1074), 905 states have call successors, (1074) [2022-07-21 11:09:45,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5590 states to 5590 states and 7782 transitions. [2022-07-21 11:09:45,202 INFO L78 Accepts]: Start accepts. Automaton has 5590 states and 7782 transitions. Word has length 149 [2022-07-21 11:09:45,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:09:45,202 INFO L495 AbstractCegarLoop]: Abstraction has 5590 states and 7782 transitions. [2022-07-21 11:09:45,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 11:09:45,203 INFO L276 IsEmpty]: Start isEmpty. Operand 5590 states and 7782 transitions. [2022-07-21 11:09:45,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-21 11:09:45,234 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:09:45,234 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:09:45,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 11:09:45,235 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:09:45,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:09:45,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1643009203, now seen corresponding path program 1 times [2022-07-21 11:09:45,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:09:45,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317404855] [2022-07-21 11:09:45,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:09:45,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:09:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:45,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:09:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:45,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:09:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:45,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:09:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:45,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:09:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:45,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:09:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:45,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:09:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:45,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:09:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:45,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:09:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:45,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:09:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:45,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:09:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:45,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 11:09:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:45,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:09:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:45,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 11:09:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:45,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 11:09:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:45,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:09:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:45,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:45,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 11:09:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:45,384 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-21 11:09:45,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:09:45,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317404855] [2022-07-21 11:09:45,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317404855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:09:45,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:09:45,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 11:09:45,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836766425] [2022-07-21 11:09:45,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:09:45,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 11:09:45,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:09:45,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 11:09:45,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:09:45,386 INFO L87 Difference]: Start difference. First operand 5590 states and 7782 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 11:09:47,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:09:47,452 INFO L93 Difference]: Finished difference Result 14712 states and 20604 transitions. [2022-07-21 11:09:47,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 11:09:47,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 151 [2022-07-21 11:09:47,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:09:47,517 INFO L225 Difference]: With dead ends: 14712 [2022-07-21 11:09:47,517 INFO L226 Difference]: Without dead ends: 9157 [2022-07-21 11:09:47,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-07-21 11:09:47,529 INFO L413 NwaCegarLoop]: 898 mSDtfsCounter, 1619 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 1821 mSolverCounterSat, 667 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 2912 SdHoareTripleChecker+Invalid, 2488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 667 IncrementalHoareTripleChecker+Valid, 1821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 11:09:47,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1696 Valid, 2912 Invalid, 2488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [667 Valid, 1821 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 11:09:47,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9157 states. [2022-07-21 11:09:47,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9157 to 8330. [2022-07-21 11:09:47,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8330 states, 6415 states have (on average 1.3624318004676539) internal successors, (8740), 6559 states have internal predecessors, (8740), 1254 states have call successors, (1254), 587 states have call predecessors, (1254), 660 states have return successors, (1489), 1267 states have call predecessors, (1489), 1253 states have call successors, (1489) [2022-07-21 11:09:47,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8330 states to 8330 states and 11483 transitions. [2022-07-21 11:09:47,776 INFO L78 Accepts]: Start accepts. Automaton has 8330 states and 11483 transitions. Word has length 151 [2022-07-21 11:09:47,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:09:47,777 INFO L495 AbstractCegarLoop]: Abstraction has 8330 states and 11483 transitions. [2022-07-21 11:09:47,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 11:09:47,778 INFO L276 IsEmpty]: Start isEmpty. Operand 8330 states and 11483 transitions. [2022-07-21 11:09:47,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 11:09:47,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:09:47,786 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:09:47,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 11:09:47,787 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:09:47,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:09:47,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1373098194, now seen corresponding path program 1 times [2022-07-21 11:09:47,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:09:47,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327844038] [2022-07-21 11:09:47,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:09:47,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:09:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:47,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:09:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:47,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:09:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:47,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:09:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:47,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:09:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:47,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:09:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:47,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:09:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:47,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:09:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:47,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:09:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:47,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:09:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:47,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:09:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:47,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 11:09:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:47,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:09:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:47,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 11:09:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:47,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:47,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 11:09:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:47,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:09:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:47,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:47,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 11:09:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-07-21 11:09:47,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:09:47,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327844038] [2022-07-21 11:09:47,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327844038] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:09:47,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:09:47,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 11:09:47,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345287287] [2022-07-21 11:09:47,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:09:47,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 11:09:47,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:09:47,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 11:09:47,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:09:47,991 INFO L87 Difference]: Start difference. First operand 8330 states and 11483 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 11:09:49,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:09:49,366 INFO L93 Difference]: Finished difference Result 13560 states and 19023 transitions. [2022-07-21 11:09:49,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:09:49,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 156 [2022-07-21 11:09:49,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:09:49,421 INFO L225 Difference]: With dead ends: 13560 [2022-07-21 11:09:49,421 INFO L226 Difference]: Without dead ends: 9164 [2022-07-21 11:09:49,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:09:49,435 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 530 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 11:09:49,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 2834 Invalid, 1641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 11:09:49,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9164 states. [2022-07-21 11:09:49,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9164 to 8350. [2022-07-21 11:09:49,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8350 states, 6435 states have (on average 1.3613053613053614) internal successors, (8760), 6579 states have internal predecessors, (8760), 1254 states have call successors, (1254), 587 states have call predecessors, (1254), 660 states have return successors, (1489), 1267 states have call predecessors, (1489), 1253 states have call successors, (1489) [2022-07-21 11:09:49,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8350 states to 8350 states and 11503 transitions. [2022-07-21 11:09:49,688 INFO L78 Accepts]: Start accepts. Automaton has 8350 states and 11503 transitions. Word has length 156 [2022-07-21 11:09:49,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:09:49,689 INFO L495 AbstractCegarLoop]: Abstraction has 8350 states and 11503 transitions. [2022-07-21 11:09:49,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 11:09:49,689 INFO L276 IsEmpty]: Start isEmpty. Operand 8350 states and 11503 transitions. [2022-07-21 11:09:49,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-21 11:09:49,700 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:09:49,701 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:09:49,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 11:09:49,701 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:09:49,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:09:49,702 INFO L85 PathProgramCache]: Analyzing trace with hash 554198863, now seen corresponding path program 1 times [2022-07-21 11:09:49,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:09:49,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186575228] [2022-07-21 11:09:49,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:09:49,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:09:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:49,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:09:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:49,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:09:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:49,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:09:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:49,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:09:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:49,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:09:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:49,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:09:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:49,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:09:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:49,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:09:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:49,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:09:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:49,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:09:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:49,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 11:09:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:49,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:09:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:49,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 11:09:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:49,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:49,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 11:09:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:49,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:09:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:49,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:49,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 11:09:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:49,998 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-07-21 11:09:49,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:09:49,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186575228] [2022-07-21 11:09:49,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186575228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:09:49,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:09:49,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 11:09:49,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016220958] [2022-07-21 11:09:49,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:09:49,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 11:09:49,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:09:50,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 11:09:50,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-21 11:09:50,000 INFO L87 Difference]: Start difference. First operand 8350 states and 11503 transitions. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 8 states have internal predecessors, (87), 5 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-21 11:09:53,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:09:53,093 INFO L93 Difference]: Finished difference Result 18695 states and 25902 transitions. [2022-07-21 11:09:53,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-21 11:09:53,094 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 8 states have internal predecessors, (87), 5 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 4 states have call successors, (18) Word has length 158 [2022-07-21 11:09:53,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:09:53,130 INFO L225 Difference]: With dead ends: 18695 [2022-07-21 11:09:53,130 INFO L226 Difference]: Without dead ends: 10380 [2022-07-21 11:09:53,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=527, Unknown=0, NotChecked=0, Total=702 [2022-07-21 11:09:53,149 INFO L413 NwaCegarLoop]: 970 mSDtfsCounter, 3198 mSDsluCounter, 2710 mSDsCounter, 0 mSdLazyCounter, 3394 mSolverCounterSat, 1699 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3287 SdHoareTripleChecker+Valid, 3680 SdHoareTripleChecker+Invalid, 5093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1699 IncrementalHoareTripleChecker+Valid, 3394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-21 11:09:53,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3287 Valid, 3680 Invalid, 5093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1699 Valid, 3394 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-21 11:09:53,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10380 states. [2022-07-21 11:09:53,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10380 to 8726. [2022-07-21 11:09:53,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8726 states, 6679 states have (on average 1.3505015720916305) internal successors, (9020), 6821 states have internal predecessors, (9020), 1346 states have call successors, (1346), 665 states have call predecessors, (1346), 700 states have return successors, (1519), 1331 states have call predecessors, (1519), 1345 states have call successors, (1519) [2022-07-21 11:09:53,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8726 states to 8726 states and 11885 transitions. [2022-07-21 11:09:53,421 INFO L78 Accepts]: Start accepts. Automaton has 8726 states and 11885 transitions. Word has length 158 [2022-07-21 11:09:53,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:09:53,421 INFO L495 AbstractCegarLoop]: Abstraction has 8726 states and 11885 transitions. [2022-07-21 11:09:53,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 8 states have internal predecessors, (87), 5 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-21 11:09:53,422 INFO L276 IsEmpty]: Start isEmpty. Operand 8726 states and 11885 transitions. [2022-07-21 11:09:53,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-21 11:09:53,434 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:09:53,434 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:09:53,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 11:09:53,435 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:09:53,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:09:53,435 INFO L85 PathProgramCache]: Analyzing trace with hash -3224619, now seen corresponding path program 1 times [2022-07-21 11:09:53,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:09:53,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342395487] [2022-07-21 11:09:53,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:09:53,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:09:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:53,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:09:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:53,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:09:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:53,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:09:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:53,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:09:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:53,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:09:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:53,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:09:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:53,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:09:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:53,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:09:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:53,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:09:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:53,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:09:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:53,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 11:09:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:53,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:09:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:53,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 11:09:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:53,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:53,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:09:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:53,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 11:09:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:53,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:53,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:53,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-21 11:09:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:53,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:53,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-21 11:09:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:53,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:53,700 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-07-21 11:09:53,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:09:53,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342395487] [2022-07-21 11:09:53,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342395487] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:09:53,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:09:53,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 11:09:53,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897568752] [2022-07-21 11:09:53,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:09:53,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 11:09:53,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:09:53,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 11:09:53,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:09:53,702 INFO L87 Difference]: Start difference. First operand 8726 states and 11885 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:09:55,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:09:55,255 INFO L93 Difference]: Finished difference Result 18475 states and 25394 transitions. [2022-07-21 11:09:55,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 11:09:55,260 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 193 [2022-07-21 11:09:55,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:09:55,287 INFO L225 Difference]: With dead ends: 18475 [2022-07-21 11:09:55,287 INFO L226 Difference]: Without dead ends: 9784 [2022-07-21 11:09:55,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 11:09:55,307 INFO L413 NwaCegarLoop]: 840 mSDtfsCounter, 426 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 3221 SdHoareTripleChecker+Invalid, 1896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:09:55,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 3221 Invalid, 1896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1603 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 11:09:55,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9784 states. [2022-07-21 11:09:55,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9784 to 8790. [2022-07-21 11:09:55,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8790 states, 6727 states have (on average 1.3480005946187008) internal successors, (9068), 6869 states have internal predecessors, (9068), 1346 states have call successors, (1346), 665 states have call predecessors, (1346), 716 states have return successors, (1543), 1347 states have call predecessors, (1543), 1345 states have call successors, (1543) [2022-07-21 11:09:55,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8790 states to 8790 states and 11957 transitions. [2022-07-21 11:09:55,593 INFO L78 Accepts]: Start accepts. Automaton has 8790 states and 11957 transitions. Word has length 193 [2022-07-21 11:09:55,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:09:55,593 INFO L495 AbstractCegarLoop]: Abstraction has 8790 states and 11957 transitions. [2022-07-21 11:09:55,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:09:55,593 INFO L276 IsEmpty]: Start isEmpty. Operand 8790 states and 11957 transitions. [2022-07-21 11:09:55,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-21 11:09:55,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:09:55,606 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:09:55,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 11:09:55,606 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:09:55,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:09:55,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1088928772, now seen corresponding path program 1 times [2022-07-21 11:09:55,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:09:55,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379041832] [2022-07-21 11:09:55,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:09:55,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:09:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:09:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:09:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:09:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:09:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:09:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:09:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:09:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:09:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:09:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:09:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 11:09:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:09:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 11:09:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 11:09:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-21 11:09:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-21 11:09:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:09:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-21 11:09:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:55,782 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-07-21 11:09:55,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:09:55,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379041832] [2022-07-21 11:09:55,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379041832] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:09:55,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:09:55,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:09:55,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355747880] [2022-07-21 11:09:55,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:09:55,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:09:55,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:09:55,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:09:55,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:09:55,784 INFO L87 Difference]: Start difference. First operand 8790 states and 11957 transitions. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:09:57,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:09:57,934 INFO L93 Difference]: Finished difference Result 22136 states and 30222 transitions. [2022-07-21 11:09:57,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 11:09:57,934 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 215 [2022-07-21 11:09:57,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:09:57,970 INFO L225 Difference]: With dead ends: 22136 [2022-07-21 11:09:57,970 INFO L226 Difference]: Without dead ends: 13381 [2022-07-21 11:09:57,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:09:57,986 INFO L413 NwaCegarLoop]: 1442 mSDtfsCounter, 1149 mSDsluCounter, 2433 mSDsCounter, 0 mSdLazyCounter, 2024 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 3875 SdHoareTripleChecker+Invalid, 2385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 2024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 11:09:57,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 3875 Invalid, 2385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 2024 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 11:09:57,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13381 states. [2022-07-21 11:09:58,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13381 to 8806. [2022-07-21 11:09:58,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8806 states, 6743 states have (on average 1.3471748479905086) internal successors, (9084), 6885 states have internal predecessors, (9084), 1346 states have call successors, (1346), 665 states have call predecessors, (1346), 716 states have return successors, (1543), 1347 states have call predecessors, (1543), 1345 states have call successors, (1543) [2022-07-21 11:09:58,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8806 states to 8806 states and 11973 transitions. [2022-07-21 11:09:58,274 INFO L78 Accepts]: Start accepts. Automaton has 8806 states and 11973 transitions. Word has length 215 [2022-07-21 11:09:58,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:09:58,276 INFO L495 AbstractCegarLoop]: Abstraction has 8806 states and 11973 transitions. [2022-07-21 11:09:58,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:09:58,276 INFO L276 IsEmpty]: Start isEmpty. Operand 8806 states and 11973 transitions. [2022-07-21 11:09:58,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-21 11:09:58,295 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:09:58,295 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:09:58,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 11:09:58,295 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:09:58,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:09:58,296 INFO L85 PathProgramCache]: Analyzing trace with hash 2069474836, now seen corresponding path program 1 times [2022-07-21 11:09:58,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:09:58,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343210321] [2022-07-21 11:09:58,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:09:58,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:09:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:09:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:09:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:09:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:09:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:09:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:09:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:09:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:09:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:09:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:09:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 11:09:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:09:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 11:09:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:09:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 11:09:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:09:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 11:09:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-21 11:09:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:09:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2022-07-21 11:09:58,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:09:58,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343210321] [2022-07-21 11:09:58,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343210321] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:09:58,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574206166] [2022-07-21 11:09:58,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:09:58,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:09:58,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:09:58,644 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) [2022-07-21 11:09:58,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 11:09:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:09:58,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 1400 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-21 11:09:59,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:09:59,178 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 98 proven. 8 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2022-07-21 11:09:59,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:09:59,554 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-07-21 11:09:59,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574206166] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 11:09:59,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 11:09:59,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 9] total 20 [2022-07-21 11:09:59,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797247247] [2022-07-21 11:09:59,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 11:09:59,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-21 11:09:59,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:09:59,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-21 11:09:59,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-07-21 11:09:59,557 INFO L87 Difference]: Start difference. First operand 8806 states and 11973 transitions. Second operand has 20 states, 20 states have (on average 10.4) internal successors, (208), 17 states have internal predecessors, (208), 9 states have call successors, (57), 9 states have call predecessors, (57), 11 states have return successors, (44), 13 states have call predecessors, (44), 9 states have call successors, (44) [2022-07-21 11:10:06,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:10:06,559 INFO L93 Difference]: Finished difference Result 31956 states and 44216 transitions. [2022-07-21 11:10:06,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-21 11:10:06,560 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.4) internal successors, (208), 17 states have internal predecessors, (208), 9 states have call successors, (57), 9 states have call predecessors, (57), 11 states have return successors, (44), 13 states have call predecessors, (44), 9 states have call successors, (44) Word has length 200 [2022-07-21 11:10:06,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:10:06,705 INFO L225 Difference]: With dead ends: 31956 [2022-07-21 11:10:06,705 INFO L226 Difference]: Without dead ends: 27104 [2022-07-21 11:10:06,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 443 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=556, Invalid=1994, Unknown=0, NotChecked=0, Total=2550 [2022-07-21 11:10:06,719 INFO L413 NwaCegarLoop]: 1613 mSDtfsCounter, 9436 mSDsluCounter, 5835 mSDsCounter, 0 mSdLazyCounter, 7769 mSolverCounterSat, 4413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9712 SdHoareTripleChecker+Valid, 7448 SdHoareTripleChecker+Invalid, 12182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4413 IncrementalHoareTripleChecker+Valid, 7769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-21 11:10:06,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9712 Valid, 7448 Invalid, 12182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4413 Valid, 7769 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-07-21 11:10:06,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27104 states. [2022-07-21 11:10:07,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27104 to 24845. [2022-07-21 11:10:07,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24845 states, 18848 states have (on average 1.3417869269949065) internal successors, (25290), 19360 states have internal predecessors, (25290), 3884 states have call successors, (3884), 1849 states have call predecessors, (3884), 2112 states have return successors, (5009), 3909 states have call predecessors, (5009), 3883 states have call successors, (5009) [2022-07-21 11:10:07,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24845 states to 24845 states and 34183 transitions. [2022-07-21 11:10:07,638 INFO L78 Accepts]: Start accepts. Automaton has 24845 states and 34183 transitions. Word has length 200 [2022-07-21 11:10:07,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:10:07,639 INFO L495 AbstractCegarLoop]: Abstraction has 24845 states and 34183 transitions. [2022-07-21 11:10:07,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.4) internal successors, (208), 17 states have internal predecessors, (208), 9 states have call successors, (57), 9 states have call predecessors, (57), 11 states have return successors, (44), 13 states have call predecessors, (44), 9 states have call successors, (44) [2022-07-21 11:10:07,639 INFO L276 IsEmpty]: Start isEmpty. Operand 24845 states and 34183 transitions. [2022-07-21 11:10:07,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-21 11:10:07,651 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:10:07,652 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:10:07,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 11:10:07,867 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,SelfDestructingSolverStorable9 [2022-07-21 11:10:07,868 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:10:07,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:10:07,869 INFO L85 PathProgramCache]: Analyzing trace with hash -872421549, now seen corresponding path program 1 times [2022-07-21 11:10:07,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:10:07,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859805883] [2022-07-21 11:10:07,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:07,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:10:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:07,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:10:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:07,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:10:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:07,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:10:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:07,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:10:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:07,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:10:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:07,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:10:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:07,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:10:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:07,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:10:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:07,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:10:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:07,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:10:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:07,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 11:10:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:07,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:10:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:07,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 11:10:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:07,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:07,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:10:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:08,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 11:10:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:08,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:08,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:08,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:10:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:08,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 11:10:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:08,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:08,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 11:10:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:08,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:08,047 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-07-21 11:10:08,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:10:08,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859805883] [2022-07-21 11:10:08,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859805883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:10:08,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:10:08,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 11:10:08,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97828784] [2022-07-21 11:10:08,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:10:08,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 11:10:08,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:10:08,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 11:10:08,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:10:08,050 INFO L87 Difference]: Start difference. First operand 24845 states and 34183 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 11:10:09,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:10:09,896 INFO L93 Difference]: Finished difference Result 47218 states and 65947 transitions. [2022-07-21 11:10:09,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 11:10:09,897 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 202 [2022-07-21 11:10:09,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:10:09,992 INFO L225 Difference]: With dead ends: 47218 [2022-07-21 11:10:09,992 INFO L226 Difference]: Without dead ends: 26319 [2022-07-21 11:10:10,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-21 11:10:10,041 INFO L413 NwaCegarLoop]: 840 mSDtfsCounter, 443 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:10:10,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 2690 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 11:10:10,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26319 states. [2022-07-21 11:10:10,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26319 to 24829. [2022-07-21 11:10:10,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24829 states, 18832 states have (on average 1.3396346644010195) internal successors, (25228), 19344 states have internal predecessors, (25228), 3884 states have call successors, (3884), 1849 states have call predecessors, (3884), 2112 states have return successors, (4997), 3909 states have call predecessors, (4997), 3883 states have call successors, (4997) [2022-07-21 11:10:10,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24829 states to 24829 states and 34109 transitions. [2022-07-21 11:10:10,959 INFO L78 Accepts]: Start accepts. Automaton has 24829 states and 34109 transitions. Word has length 202 [2022-07-21 11:10:10,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:10:10,961 INFO L495 AbstractCegarLoop]: Abstraction has 24829 states and 34109 transitions. [2022-07-21 11:10:10,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 11:10:10,962 INFO L276 IsEmpty]: Start isEmpty. Operand 24829 states and 34109 transitions. [2022-07-21 11:10:10,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-07-21 11:10:10,974 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:10:10,974 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:10:10,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 11:10:10,975 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:10:10,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:10:10,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1114922220, now seen corresponding path program 1 times [2022-07-21 11:10:10,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:10:10,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386524273] [2022-07-21 11:10:10,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:10,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:10:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:10:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:10:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:10:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:10:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:10:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:10:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:10:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:10:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:10:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:10:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 11:10:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:10:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 11:10:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:10:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 11:10:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:10:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 11:10:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 11:10:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:11,161 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-07-21 11:10:11,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:10:11,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386524273] [2022-07-21 11:10:11,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386524273] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:10:11,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:10:11,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 11:10:11,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471496894] [2022-07-21 11:10:11,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:10:11,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 11:10:11,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:10:11,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 11:10:11,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:10:11,163 INFO L87 Difference]: Start difference. First operand 24829 states and 34109 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 11:10:13,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:10:13,924 INFO L93 Difference]: Finished difference Result 66761 states and 96168 transitions. [2022-07-21 11:10:13,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:10:13,925 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 204 [2022-07-21 11:10:13,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:10:14,070 INFO L225 Difference]: With dead ends: 66761 [2022-07-21 11:10:14,071 INFO L226 Difference]: Without dead ends: 41967 [2022-07-21 11:10:14,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:10:14,136 INFO L413 NwaCegarLoop]: 1410 mSDtfsCounter, 1366 mSDsluCounter, 3004 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 4414 SdHoareTripleChecker+Invalid, 2045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 11:10:14,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 4414 Invalid, 2045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 11:10:14,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41967 states. [2022-07-21 11:10:15,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41967 to 24889. [2022-07-21 11:10:15,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24889 states, 18892 states have (on average 1.338556002540758) internal successors, (25288), 19404 states have internal predecessors, (25288), 3884 states have call successors, (3884), 1849 states have call predecessors, (3884), 2112 states have return successors, (4997), 3909 states have call predecessors, (4997), 3883 states have call successors, (4997) [2022-07-21 11:10:15,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24889 states to 24889 states and 34169 transitions. [2022-07-21 11:10:15,368 INFO L78 Accepts]: Start accepts. Automaton has 24889 states and 34169 transitions. Word has length 204 [2022-07-21 11:10:15,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:10:15,368 INFO L495 AbstractCegarLoop]: Abstraction has 24889 states and 34169 transitions. [2022-07-21 11:10:15,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 11:10:15,369 INFO L276 IsEmpty]: Start isEmpty. Operand 24889 states and 34169 transitions. [2022-07-21 11:10:15,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-21 11:10:15,381 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:10:15,381 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:10:15,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 11:10:15,382 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:10:15,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:10:15,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1099484298, now seen corresponding path program 1 times [2022-07-21 11:10:15,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:10:15,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830059522] [2022-07-21 11:10:15,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:15,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:10:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:10:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:10:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:10:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:10:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:10:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:10:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:10:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:10:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:10:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:10:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 11:10:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:10:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 11:10:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:10:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 11:10:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:10:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 11:10:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 11:10:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-21 11:10:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:15,691 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-07-21 11:10:15,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:10:15,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830059522] [2022-07-21 11:10:15,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830059522] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:10:15,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:10:15,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 11:10:15,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399703400] [2022-07-21 11:10:15,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:10:15,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 11:10:15,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:10:15,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 11:10:15,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:10:15,693 INFO L87 Difference]: Start difference. First operand 24889 states and 34169 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-21 11:10:17,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:10:17,487 INFO L93 Difference]: Finished difference Result 38316 states and 52807 transitions. [2022-07-21 11:10:17,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 11:10:17,496 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 208 [2022-07-21 11:10:17,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:10:17,531 INFO L225 Difference]: With dead ends: 38316 [2022-07-21 11:10:17,532 INFO L226 Difference]: Without dead ends: 13432 [2022-07-21 11:10:17,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-21 11:10:17,564 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 657 mSDsluCounter, 2377 mSDsCounter, 0 mSdLazyCounter, 1611 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 3220 SdHoareTripleChecker+Invalid, 2044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 1611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 11:10:17,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 3220 Invalid, 2044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 1611 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 11:10:17,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13432 states. [2022-07-21 11:10:17,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13432 to 12493. [2022-07-21 11:10:17,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12493 states, 9477 states have (on average 1.3408251556399704) internal successors, (12707), 9738 states have internal predecessors, (12707), 1958 states have call successors, (1958), 926 states have call predecessors, (1958), 1057 states have return successors, (2524), 1965 states have call predecessors, (2524), 1957 states have call successors, (2524) [2022-07-21 11:10:17,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12493 states to 12493 states and 17189 transitions. [2022-07-21 11:10:17,963 INFO L78 Accepts]: Start accepts. Automaton has 12493 states and 17189 transitions. Word has length 208 [2022-07-21 11:10:17,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:10:17,963 INFO L495 AbstractCegarLoop]: Abstraction has 12493 states and 17189 transitions. [2022-07-21 11:10:17,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-21 11:10:17,963 INFO L276 IsEmpty]: Start isEmpty. Operand 12493 states and 17189 transitions. [2022-07-21 11:10:17,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-21 11:10:17,972 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:10:17,972 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:10:17,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 11:10:17,972 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:10:17,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:10:17,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1517373000, now seen corresponding path program 1 times [2022-07-21 11:10:17,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:10:17,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240730257] [2022-07-21 11:10:17,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:17,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:10:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:18,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:10:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:18,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:10:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:18,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:10:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:18,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:10:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:18,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:10:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:18,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:10:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:18,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:10:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:18,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:10:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:18,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:10:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:18,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:10:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:18,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 11:10:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:18,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:10:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:18,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 11:10:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:18,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:18,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:10:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:18,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 11:10:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:18,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:18,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:18,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:10:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:18,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 11:10:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:18,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:19,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 11:10:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:19,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-21 11:10:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:19,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:19,053 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 48 proven. 13 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2022-07-21 11:10:19,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:10:19,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240730257] [2022-07-21 11:10:19,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240730257] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:10:19,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129676306] [2022-07-21 11:10:19,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:19,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:10:19,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:10:19,055 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) [2022-07-21 11:10:19,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 11:10:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:19,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 1415 conjuncts, 62 conjunts are in the unsatisfiable core [2022-07-21 11:10:19,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:10:19,938 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-07-21 11:10:19,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:10:19,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129676306] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:10:19,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:10:19,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [33] total 41 [2022-07-21 11:10:19,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509510461] [2022-07-21 11:10:19,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:10:19,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 11:10:19,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:10:19,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 11:10:19,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1538, Unknown=0, NotChecked=0, Total=1640 [2022-07-21 11:10:19,943 INFO L87 Difference]: Start difference. First operand 12493 states and 17189 transitions. Second operand has 16 states, 15 states have (on average 8.133333333333333) internal successors, (122), 12 states have internal predecessors, (122), 3 states have call successors, (25), 2 states have call predecessors, (25), 6 states have return successors, (24), 6 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-21 11:10:20,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:10:20,891 INFO L93 Difference]: Finished difference Result 29309 states and 41475 transitions. [2022-07-21 11:10:20,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 11:10:20,892 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 8.133333333333333) internal successors, (122), 12 states have internal predecessors, (122), 3 states have call successors, (25), 2 states have call predecessors, (25), 6 states have return successors, (24), 6 states have call predecessors, (24), 3 states have call successors, (24) Word has length 208 [2022-07-21 11:10:20,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:10:20,940 INFO L225 Difference]: With dead ends: 29309 [2022-07-21 11:10:20,940 INFO L226 Difference]: Without dead ends: 16866 [2022-07-21 11:10:20,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 241 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=129, Invalid=1941, Unknown=0, NotChecked=0, Total=2070 [2022-07-21 11:10:20,966 INFO L413 NwaCegarLoop]: 1370 mSDtfsCounter, 375 mSDsluCounter, 17302 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 18672 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 11:10:20,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 18672 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 11:10:20,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16866 states. [2022-07-21 11:10:21,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16866 to 12583. [2022-07-21 11:10:21,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12583 states, 9543 states have (on average 1.3363722099968562) internal successors, (12753), 9801 states have internal predecessors, (12753), 1958 states have call successors, (1958), 926 states have call predecessors, (1958), 1081 states have return successors, (2556), 1992 states have call predecessors, (2556), 1957 states have call successors, (2556) [2022-07-21 11:10:21,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12583 states to 12583 states and 17267 transitions. [2022-07-21 11:10:21,477 INFO L78 Accepts]: Start accepts. Automaton has 12583 states and 17267 transitions. Word has length 208 [2022-07-21 11:10:21,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:10:21,478 INFO L495 AbstractCegarLoop]: Abstraction has 12583 states and 17267 transitions. [2022-07-21 11:10:21,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 8.133333333333333) internal successors, (122), 12 states have internal predecessors, (122), 3 states have call successors, (25), 2 states have call predecessors, (25), 6 states have return successors, (24), 6 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-21 11:10:21,478 INFO L276 IsEmpty]: Start isEmpty. Operand 12583 states and 17267 transitions. [2022-07-21 11:10:21,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-21 11:10:21,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:10:21,483 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:10:21,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 11:10:21,699 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,SelfDestructingSolverStorable13 [2022-07-21 11:10:21,700 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:10:21,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:10:21,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1833099563, now seen corresponding path program 1 times [2022-07-21 11:10:21,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:10:21,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218957130] [2022-07-21 11:10:21,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:21,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:10:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:10:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:10:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:10:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:10:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:10:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:10:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:10:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:10:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:10:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:10:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 11:10:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:10:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:10:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-21 11:10:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-21 11:10:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 11:10:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-21 11:10:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:10:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-21 11:10:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:21,880 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-07-21 11:10:21,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:10:21,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218957130] [2022-07-21 11:10:21,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218957130] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:10:21,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138064636] [2022-07-21 11:10:21,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:21,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:10:21,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:10:21,882 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) [2022-07-21 11:10:21,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 11:10:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:22,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 1518 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 11:10:22,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:10:22,259 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-07-21 11:10:22,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:10:22,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138064636] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:10:22,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:10:22,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-07-21 11:10:22,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958332756] [2022-07-21 11:10:22,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:10:22,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:10:22,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:10:22,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:10:22,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 11:10:22,261 INFO L87 Difference]: Start difference. First operand 12583 states and 17267 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 11:10:23,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:10:23,385 INFO L93 Difference]: Finished difference Result 31184 states and 42945 transitions. [2022-07-21 11:10:23,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 11:10:23,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 226 [2022-07-21 11:10:23,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:10:23,444 INFO L225 Difference]: With dead ends: 31184 [2022-07-21 11:10:23,445 INFO L226 Difference]: Without dead ends: 18651 [2022-07-21 11:10:23,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-07-21 11:10:23,483 INFO L413 NwaCegarLoop]: 1721 mSDtfsCounter, 1394 mSDsluCounter, 3632 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 5353 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 11:10:23,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1400 Valid, 5353 Invalid, 336 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [173 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 11:10:23,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18651 states. [2022-07-21 11:10:24,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18651 to 12593. [2022-07-21 11:10:24,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12593 states, 9553 states have (on average 1.336020098398409) internal successors, (12763), 9801 states have internal predecessors, (12763), 1958 states have call successors, (1958), 926 states have call predecessors, (1958), 1081 states have return successors, (2556), 1992 states have call predecessors, (2556), 1957 states have call successors, (2556) [2022-07-21 11:10:24,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12593 states to 12593 states and 17277 transitions. [2022-07-21 11:10:24,185 INFO L78 Accepts]: Start accepts. Automaton has 12593 states and 17277 transitions. Word has length 226 [2022-07-21 11:10:24,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:10:24,186 INFO L495 AbstractCegarLoop]: Abstraction has 12593 states and 17277 transitions. [2022-07-21 11:10:24,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 11:10:24,186 INFO L276 IsEmpty]: Start isEmpty. Operand 12593 states and 17277 transitions. [2022-07-21 11:10:24,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-21 11:10:24,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:10:24,191 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:10:24,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 11:10:24,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:10:24,404 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:10:24,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:10:24,404 INFO L85 PathProgramCache]: Analyzing trace with hash -670216187, now seen corresponding path program 1 times [2022-07-21 11:10:24,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:10:24,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414524390] [2022-07-21 11:10:24,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:24,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:10:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:10:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:10:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:10:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:10:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:10:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:10:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:10:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:10:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:10:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:10:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 11:10:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:10:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 11:10:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:10:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 11:10:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:10:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 11:10:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 11:10:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-21 11:10:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 11:10:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-21 11:10:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 11:10:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:10:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:24,874 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2022-07-21 11:10:24,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:10:24,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414524390] [2022-07-21 11:10:24,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414524390] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:10:24,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:10:24,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-21 11:10:24,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91972444] [2022-07-21 11:10:24,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:10:24,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-21 11:10:24,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:10:24,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-21 11:10:24,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2022-07-21 11:10:24,877 INFO L87 Difference]: Start difference. First operand 12593 states and 17277 transitions. Second operand has 20 states, 20 states have (on average 6.8) internal successors, (136), 12 states have internal predecessors, (136), 5 states have call successors, (28), 7 states have call predecessors, (28), 4 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2022-07-21 11:10:30,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:10:30,138 INFO L93 Difference]: Finished difference Result 34036 states and 49217 transitions. [2022-07-21 11:10:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-21 11:10:30,138 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.8) internal successors, (136), 12 states have internal predecessors, (136), 5 states have call successors, (28), 7 states have call predecessors, (28), 4 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) Word has length 237 [2022-07-21 11:10:30,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:10:30,204 INFO L225 Difference]: With dead ends: 34036 [2022-07-21 11:10:30,205 INFO L226 Difference]: Without dead ends: 21493 [2022-07-21 11:10:30,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=859, Unknown=0, NotChecked=0, Total=992 [2022-07-21 11:10:30,237 INFO L413 NwaCegarLoop]: 1358 mSDtfsCounter, 1752 mSDsluCounter, 12762 mSDsCounter, 0 mSdLazyCounter, 7723 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1866 SdHoareTripleChecker+Valid, 14120 SdHoareTripleChecker+Invalid, 8373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 7723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:10:30,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1866 Valid, 14120 Invalid, 8373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 7723 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-21 11:10:30,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21493 states. [2022-07-21 11:10:30,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21493 to 12673. [2022-07-21 11:10:30,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12673 states, 9610 states have (on average 1.3340270551508846) internal successors, (12820), 9858 states have internal predecessors, (12820), 1973 states have call successors, (1973), 926 states have call predecessors, (1973), 1089 states have return successors, (2581), 2011 states have call predecessors, (2581), 1972 states have call successors, (2581) [2022-07-21 11:10:30,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12673 states to 12673 states and 17374 transitions. [2022-07-21 11:10:30,955 INFO L78 Accepts]: Start accepts. Automaton has 12673 states and 17374 transitions. Word has length 237 [2022-07-21 11:10:30,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:10:30,955 INFO L495 AbstractCegarLoop]: Abstraction has 12673 states and 17374 transitions. [2022-07-21 11:10:30,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.8) internal successors, (136), 12 states have internal predecessors, (136), 5 states have call successors, (28), 7 states have call predecessors, (28), 4 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2022-07-21 11:10:30,955 INFO L276 IsEmpty]: Start isEmpty. Operand 12673 states and 17374 transitions. [2022-07-21 11:10:30,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-21 11:10:30,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:10:30,960 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:10:30,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 11:10:30,960 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:10:30,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:10:30,961 INFO L85 PathProgramCache]: Analyzing trace with hash -944975801, now seen corresponding path program 1 times [2022-07-21 11:10:30,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:10:30,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135067595] [2022-07-21 11:10:30,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:30,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:10:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 11:10:31,439 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 11:10:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 11:10:31,828 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 11:10:31,829 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 11:10:31,830 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 11:10:31,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 11:10:31,835 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:10:31,839 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 11:10:31,882 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-21 11:10:31,883 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-21 11:10:31,883 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-21 11:10:31,883 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-21 11:10:31,884 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-21 11:10:31,884 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-21 11:10:31,884 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-21 11:10:31,884 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-21 11:10:31,884 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-21 11:10:31,884 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-21 11:10:31,896 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == dest.base && #res.offset == dest.offset; is not ensure(true) [2022-07-21 11:10:32,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:10:32 BoogieIcfgContainer [2022-07-21 11:10:32,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 11:10:32,041 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 11:10:32,041 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 11:10:32,042 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 11:10:32,042 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:09:37" (3/4) ... [2022-07-21 11:10:32,045 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 11:10:32,045 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 11:10:32,046 INFO L158 Benchmark]: Toolchain (without parser) took 57710.87ms. Allocated memory was 58.7MB in the beginning and 3.1GB in the end (delta: 3.0GB). Free memory was 28.4MB in the beginning and 718.3MB in the end (delta: -689.9MB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. [2022-07-21 11:10:32,046 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 58.7MB. Free memory was 41.0MB in the beginning and 41.0MB in the end (delta: 47.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 11:10:32,047 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1608.12ms. Allocated memory was 58.7MB in the beginning and 94.4MB in the end (delta: 35.7MB). Free memory was 28.2MB in the beginning and 36.8MB in the end (delta: -8.6MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. [2022-07-21 11:10:32,047 INFO L158 Benchmark]: Boogie Procedure Inliner took 142.71ms. Allocated memory is still 94.4MB. Free memory was 36.8MB in the beginning and 45.0MB in the end (delta: -8.2MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2022-07-21 11:10:32,047 INFO L158 Benchmark]: Boogie Preprocessor took 114.80ms. Allocated memory is still 94.4MB. Free memory was 45.0MB in the beginning and 34.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-21 11:10:32,047 INFO L158 Benchmark]: RCFGBuilder took 1379.68ms. Allocated memory was 94.4MB in the beginning and 123.7MB in the end (delta: 29.4MB). Free memory was 34.1MB in the beginning and 64.7MB in the end (delta: -30.6MB). Peak memory consumption was 33.8MB. Max. memory is 16.1GB. [2022-07-21 11:10:32,048 INFO L158 Benchmark]: TraceAbstraction took 54456.66ms. Allocated memory was 123.7MB in the beginning and 3.1GB in the end (delta: 3.0GB). Free memory was 63.9MB in the beginning and 718.3MB in the end (delta: -654.4MB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. [2022-07-21 11:10:32,048 INFO L158 Benchmark]: Witness Printer took 4.05ms. Allocated memory is still 3.1GB. Free memory is still 718.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 11:10:32,053 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 58.7MB. Free memory was 41.0MB in the beginning and 41.0MB in the end (delta: 47.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1608.12ms. Allocated memory was 58.7MB in the beginning and 94.4MB in the end (delta: 35.7MB). Free memory was 28.2MB in the beginning and 36.8MB in the end (delta: -8.6MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 142.71ms. Allocated memory is still 94.4MB. Free memory was 36.8MB in the beginning and 45.0MB in the end (delta: -8.2MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 114.80ms. Allocated memory is still 94.4MB. Free memory was 45.0MB in the beginning and 34.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 1379.68ms. Allocated memory was 94.4MB in the beginning and 123.7MB in the end (delta: 29.4MB). Free memory was 34.1MB in the beginning and 64.7MB in the end (delta: -30.6MB). Peak memory consumption was 33.8MB. Max. memory is 16.1GB. * TraceAbstraction took 54456.66ms. Allocated memory was 123.7MB in the beginning and 3.1GB in the end (delta: 3.0GB). Free memory was 63.9MB in the beginning and 718.3MB in the end (delta: -654.4MB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. * Witness Printer took 4.05ms. Allocated memory is still 3.1GB. Free memory is still 718.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == dest.base && #res.offset == dest.offset; is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 5666]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 5775, overapproximation of bitwiseOr at line 5315, overapproximation of bitwiseAnd at line 6430. Possible FailurePath: [L5689] int LDV_IN_INTERRUPT = 1; [L5690] int ldv_state_variable_2 ; [L5691] struct ppp_channel *sync_ops_group0 ; [L5692] int ref_cnt ; [L5693] int ldv_state_variable_1 ; [L5694] int ldv_state_variable_0 ; [L5695] struct tty_struct *ppp_sync_ldisc_group1 ; [L5751] static struct ppp_channel_ops const sync_ops = {& ppp_sync_send, & ppp_sync_ioctl}; [L5775-L5776] static rwlock_t disc_data_lock = {{{0}, {{0U}}}, 3736018669U, 4294967295U, (void *)-1, {0, {0, 0}, "disc_data_lock", 0, 0UL}}; [L6096-L6099] static struct tty_ldisc_ops ppp_sync_ldisc = {21507, (char *)"pppsync", 0, 0, & ppp_sync_open, & ppp_sync_close, 0, 0, & ppp_sync_read, & ppp_sync_write, & ppp_synctty_ioctl, 0, 0, & ppp_sync_poll, & ppp_sync_hangup, & ppp_sync_receive, & ppp_sync_wakeup, 0, 0, 0, & __this_module, 0}; [L6637] int ldv_retval_0 ; [L6638] int ldv_retval_1 ; [L7012] Element set_impl[15] ; [L7013] int last_index = 0; [L7147] Set LDV_SKBS ; VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6661] size_t ldvarg11 ; [L6662] size_t tmp ; [L6663] struct file *ldvarg7 ; [L6664] void *tmp___0 ; [L6665] int ldvarg3 ; [L6666] int tmp___1 ; [L6667] unsigned long ldvarg0 ; [L6668] unsigned long tmp___2 ; [L6669] unsigned char *ldvarg12 ; [L6670] void *tmp___3 ; [L6671] unsigned char *ldvarg5 ; [L6672] void *tmp___4 ; [L6673] struct poll_table_struct *ldvarg6 ; [L6674] void *tmp___5 ; [L6675] size_t ldvarg8 ; [L6676] size_t tmp___6 ; [L6677] unsigned int ldvarg1 ; [L6678] unsigned int tmp___7 ; [L6679] char *ldvarg4 ; [L6680] void *tmp___8 ; [L6681] struct file *ldvarg13 ; [L6682] void *tmp___9 ; [L6683] struct file *ldvarg10 ; [L6684] void *tmp___10 ; [L6685] unsigned char *ldvarg9 ; [L6686] void *tmp___11 ; [L6687] struct file *ldvarg2 ; [L6688] void *tmp___12 ; [L6689] unsigned long ldvarg14 ; [L6690] unsigned long tmp___13 ; [L6691] struct sk_buff *ldvarg16 ; [L6692] void *tmp___14 ; [L6693] unsigned int ldvarg15 ; [L6694] unsigned int tmp___15 ; [L6695] int tmp___16 ; [L6696] int tmp___17 ; [L6697] int tmp___18 ; [L6698] int tmp___19 ; [L6700] tmp = __VERIFIER_nondet_size_t() [L6701] ldvarg11 = tmp VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg11=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0] [L6702] CALL, EXPR ldv_zalloc(512UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=512, \result={0:0}, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=512, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=1] [L6702] RET, EXPR ldv_zalloc(512UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_zalloc(512UL)={0:0}, ldvarg11=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0] [L6702] tmp___0 = ldv_zalloc(512UL) [L6703] ldvarg7 = (struct file *)tmp___0 [L6704] tmp___1 = __VERIFIER_nondet_int() [L6705] ldvarg3 = tmp___1 [L6706] tmp___2 = __VERIFIER_nondet_ulong() [L6707] ldvarg0 = tmp___2 VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=8589934607, ldvarg11=0, ldvarg3=-2, ldvarg7={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___2=8589934607] [L6708] CALL, EXPR ldv_zalloc(1UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=1, \result={0:0}, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=1, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=1] [L6708] RET, EXPR ldv_zalloc(1UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_zalloc(1UL)={0:0}, ldvarg0=8589934607, ldvarg11=0, ldvarg3=-2, ldvarg7={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___2=8589934607] [L6708] tmp___3 = ldv_zalloc(1UL) [L6709] ldvarg12 = (unsigned char *)tmp___3 VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=8589934607, ldvarg11=0, ldvarg12={0:0}, ldvarg3=-2, ldvarg7={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___2=8589934607, tmp___3={0:0}] [L6710] CALL, EXPR ldv_zalloc(1UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=1, \result={0:0}, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=1, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=1] [L6710] RET, EXPR ldv_zalloc(1UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_zalloc(1UL)={0:0}, ldvarg0=8589934607, ldvarg11=0, ldvarg12={0:0}, ldvarg3=-2, ldvarg7={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___2=8589934607, tmp___3={0:0}] [L6710] tmp___4 = ldv_zalloc(1UL) [L6711] ldvarg5 = (unsigned char *)tmp___4 VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=8589934607, ldvarg11=0, ldvarg12={0:0}, ldvarg3=-2, ldvarg5={0:0}, ldvarg7={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}] [L6712] CALL, EXPR ldv_zalloc(16UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=16, \result={0:0}, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=16, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=1] [L6712] RET, EXPR ldv_zalloc(16UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_zalloc(16UL)={0:0}, ldvarg0=8589934607, ldvarg11=0, ldvarg12={0:0}, ldvarg3=-2, ldvarg5={0:0}, ldvarg7={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}] [L6712] tmp___5 = ldv_zalloc(16UL) [L6713] ldvarg6 = (struct poll_table_struct *)tmp___5 [L6714] tmp___6 = __VERIFIER_nondet_size_t() [L6715] ldvarg8 = tmp___6 [L6716] tmp___7 = __VERIFIER_nondet_uint() [L6717] ldvarg1 = tmp___7 VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=8589934607, ldvarg1=13, ldvarg11=0, ldvarg12={0:0}, ldvarg3=-2, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=13] [L6718] CALL, EXPR ldv_zalloc(1UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=1, \result={0:0}, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=1, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=1] [L6718] RET, EXPR ldv_zalloc(1UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_zalloc(1UL)={0:0}, ldvarg0=8589934607, ldvarg1=13, ldvarg11=0, ldvarg12={0:0}, ldvarg3=-2, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=13] [L6718] tmp___8 = ldv_zalloc(1UL) [L6719] ldvarg4 = (char *)tmp___8 VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=8589934607, ldvarg1=13, ldvarg11=0, ldvarg12={0:0}, ldvarg3=-2, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=13, tmp___8={0:0}] [L6720] CALL, EXPR ldv_zalloc(512UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=512, \result={0:0}, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=512, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=1] [L6720] RET, EXPR ldv_zalloc(512UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_zalloc(512UL)={0:0}, ldvarg0=8589934607, ldvarg1=13, ldvarg11=0, ldvarg12={0:0}, ldvarg3=-2, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=13, tmp___8={0:0}] [L6720] tmp___9 = ldv_zalloc(512UL) [L6721] ldvarg13 = (struct file *)tmp___9 VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=8589934607, ldvarg1=13, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg3=-2, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=13, tmp___8={0:0}, tmp___9={0:0}] [L6722] CALL, EXPR ldv_zalloc(512UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=512, \result={0:0}, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=512, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=1] [L6722] RET, EXPR ldv_zalloc(512UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_zalloc(512UL)={0:0}, ldvarg0=8589934607, ldvarg1=13, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg3=-2, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=13, tmp___8={0:0}, tmp___9={0:0}] [L6722] tmp___10 = ldv_zalloc(512UL) [L6723] ldvarg10 = (struct file *)tmp___10 VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=8589934607, ldvarg1=13, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg3=-2, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___10={0:0}, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=13, tmp___8={0:0}, tmp___9={0:0}] [L6724] CALL, EXPR ldv_zalloc(1UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=1, \result={0:0}, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=1, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=1] [L6724] RET, EXPR ldv_zalloc(1UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_zalloc(1UL)={0:0}, ldvarg0=8589934607, ldvarg1=13, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg3=-2, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___10={0:0}, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=13, tmp___8={0:0}, tmp___9={0:0}] [L6724] tmp___11 = ldv_zalloc(1UL) [L6725] ldvarg9 = (unsigned char *)tmp___11 VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=8589934607, ldvarg1=13, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg3=-2, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___10={0:0}, tmp___11={0:0}, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=13, tmp___8={0:0}, tmp___9={0:0}] [L6726] CALL, EXPR ldv_zalloc(512UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=512, \result={0:0}, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=512, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=1] [L6726] RET, EXPR ldv_zalloc(512UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_zalloc(512UL)={0:0}, ldvarg0=8589934607, ldvarg1=13, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg3=-2, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___10={0:0}, tmp___11={0:0}, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=13, tmp___8={0:0}, tmp___9={0:0}] [L6726] tmp___12 = ldv_zalloc(512UL) [L6727] ldvarg2 = (struct file *)tmp___12 [L6728] tmp___13 = __VERIFIER_nondet_ulong() [L6729] ldvarg14 = tmp___13 VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=8589934607, ldvarg1=13, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=8589934595, ldvarg2={0:0}, ldvarg3=-2, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=8589934595, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=13, tmp___8={0:0}, tmp___9={0:0}] [L6730] CALL, EXPR ldv_zalloc(232UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=232, \result={0:0}, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=232, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=1] [L6730] RET, EXPR ldv_zalloc(232UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_zalloc(232UL)={0:0}, ldvarg0=8589934607, ldvarg1=13, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=8589934595, ldvarg2={0:0}, ldvarg3=-2, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=8589934595, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=13, tmp___8={0:0}, tmp___9={0:0}] [L6730] tmp___14 = ldv_zalloc(232UL) [L6731] ldvarg16 = (struct sk_buff *)tmp___14 [L6732] tmp___15 = __VERIFIER_nondet_uint() [L6733] ldvarg15 = tmp___15 [L6734] CALL ldv_initialize() [L7166] CALL ldv_set_init(LDV_SKBS) [L7018] set = set_impl [L7019] last_index = 0 VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={24:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7166] RET ldv_set_init(LDV_SKBS) [L6734] RET ldv_initialize() [L6735] ldv_state_variable_1 = 0 [L6736] ref_cnt = 0 [L6737] ldv_state_variable_0 = 1 [L6738] ldv_state_variable_2 = 0 VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=8589934607, ldvarg1=13, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=8589934595, ldvarg15=4294967292, ldvarg16={0:0}, ldvarg2={0:0}, ldvarg3=-2, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=8589934595, tmp___14={0:0}, tmp___15=4294967292, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=13, tmp___8={0:0}, tmp___9={0:0}] [L6740] tmp___16 = __VERIFIER_nondet_int() [L6742] case 0: [L6838] case 1: VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=8589934607, ldvarg1=13, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=8589934595, ldvarg15=4294967292, ldvarg16={0:0}, ldvarg2={0:0}, ldvarg3=-2, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=8589934595, tmp___14={0:0}, tmp___15=4294967292, tmp___16=1, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=13, tmp___8={0:0}, tmp___9={0:0}] [L6839] COND TRUE ldv_state_variable_0 != 0 [L6840] tmp___18 = __VERIFIER_nondet_int() [L6842] case 0: [L6850] case 1: VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=8589934607, ldvarg1=13, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=8589934595, ldvarg15=4294967292, ldvarg16={0:0}, ldvarg2={0:0}, ldvarg3=-2, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=8589934595, tmp___14={0:0}, tmp___15=4294967292, tmp___16=1, tmp___18=1, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=13, tmp___8={0:0}, tmp___9={0:0}] [L6851] COND TRUE ldv_state_variable_0 == 1 [L6852] CALL, EXPR ppp_sync_init() [L6102] int err ; [L6104] CALL, EXPR tty_register_ldisc(14, & ppp_sync_ldisc) [L7358] return __VERIFIER_nondet_int(); [L6104] RET, EXPR tty_register_ldisc(14, & ppp_sync_ldisc) [L6104] err = tty_register_ldisc(14, & ppp_sync_ldisc) [L6105] COND FALSE !(err != 0) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, err=0, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6109] return (err); VAL [\result=0, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, err=0, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6852] RET, EXPR ppp_sync_init() [L6852] ldv_retval_1 = ppp_sync_init() [L6853] COND TRUE ldv_retval_1 == 0 [L6854] ldv_state_variable_0 = 3 [L6855] ldv_state_variable_2 = 1 [L6856] CALL ldv_initialize_ppp_channel_ops_2() [L6643] void *tmp ; VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=0, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6645] CALL, EXPR ldv_zalloc(40UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=0, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=40, \result={0:0}, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=0, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=40, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=1] [L6645] RET, EXPR ldv_zalloc(40UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=0, ldv_state_variable_2=1, ldv_zalloc(40UL)={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6645] tmp = ldv_zalloc(40UL) [L6646] sync_ops_group0 = (struct ppp_channel *)tmp VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=0, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp={0:0}] [L6856] RET ldv_initialize_ppp_channel_ops_2() [L6857] ldv_state_variable_1 = 1 [L6858] CALL ldv_target_type_1() [L6652] void *tmp ; VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6654] CALL, EXPR ldv_zalloc(1752UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=1752, \result={0:0}, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=1752, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=1] [L6654] RET, EXPR ldv_zalloc(1752UL) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_zalloc(1752UL)={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6654] tmp = ldv_zalloc(1752UL) [L6655] ppp_sync_ldisc_group1 = (struct tty_struct *)tmp VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp={0:0}] [L6858] RET ldv_target_type_1() [L6861] COND FALSE !(ldv_retval_1 != 0) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldvarg0=8589934607, ldvarg1=13, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=8589934595, ldvarg15=4294967292, ldvarg16={0:0}, ldvarg2={0:0}, ldvarg3=-2, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=8589934595, tmp___14={0:0}, tmp___15=4294967292, tmp___16=1, tmp___18=1, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=13, tmp___8={0:0}, tmp___9={0:0}] [L6740] tmp___16 = __VERIFIER_nondet_int() [L6742] case 0: [L6838] case 1: [L6876] case 2: VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldvarg0=8589934607, ldvarg1=13, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=8589934595, ldvarg15=4294967292, ldvarg16={0:0}, ldvarg2={0:0}, ldvarg3=-2, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=8589934595, tmp___14={0:0}, tmp___15=4294967292, tmp___16=2, tmp___18=1, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=13, tmp___8={0:0}, tmp___9={0:0}] [L6877] COND TRUE ldv_state_variable_2 != 0 [L6878] tmp___19 = __VERIFIER_nondet_int() [L6880] case 0: VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldvarg0=8589934607, ldvarg1=13, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=8589934595, ldvarg15=4294967292, ldvarg16={0:0}, ldvarg2={0:0}, ldvarg3=-2, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=8589934595, tmp___14={0:0}, tmp___15=4294967292, tmp___16=2, tmp___18=1, tmp___19=0, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=13, tmp___8={0:0}, tmp___9={0:0}] [L6881] COND TRUE ldv_state_variable_2 == 1 [L6882] CALL ppp_sync_send(sync_ops_group0, ldvarg16) [L6439] struct syncppp *ap ; [L6440] int tmp ; [L6442] EXPR chan->private [L6442] ap = (struct syncppp *)chan->private [L6443] CALL ppp_sync_push(ap) VAL [\old(last_index)=0, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6461] int sent ; [L6462] int done ; [L6463] struct tty_struct *tty ; [L6464] int tty_stuffed ; [L6465] int tmp ; [L6466] int tmp___0 ; [L6467] int tmp___1 ; [L6468] int tmp___2 ; [L6470] done = 0 [L6471] EXPR ap->tty [L6471] tty = ap->tty [L6472] tty_stuffed = 0 VAL [\old(last_index)=0, __this_module={8589934597:8589934603}, ap={24:0}, ap={24:0}, disc_data_lock={22:0}, done=0, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tty={0:0}, tty_stuffed=0] [L6473] CALL, EXPR spin_trylock_bh(& ap->xmit_lock) VAL [\old(last_index)=0, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5417] int tmp ; [L5419] CALL, EXPR _raw_spin_trylock_bh(& lock->ldv_6338.rlock) [L7268] return __VERIFIER_nondet_int(); [L5419] RET, EXPR _raw_spin_trylock_bh(& lock->ldv_6338.rlock) [L5419] tmp = _raw_spin_trylock_bh(& lock->ldv_6338.rlock) [L5420] return (tmp); VAL [\old(last_index)=0, \result=0, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, lock={24:20}, lock={24:20}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0] [L6473] RET, EXPR spin_trylock_bh(& ap->xmit_lock) VAL [\old(last_index)=0, __this_module={8589934597:8589934603}, ap={24:0}, ap={24:0}, disc_data_lock={22:0}, done=0, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, spin_trylock_bh(& ap->xmit_lock)=0, sync_ops={21:0}, sync_ops_group0={0:0}, tty={0:0}, tty_stuffed=0] [L6473] tmp = spin_trylock_bh(& ap->xmit_lock) [L6474] COND TRUE tmp == 0 [L6475] return (0); VAL [\old(last_index)=0, \result=0, __this_module={8589934597:8589934603}, ap={24:0}, ap={24:0}, disc_data_lock={22:0}, done=0, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tty={0:0}, tty_stuffed=0] [L6443] RET ppp_sync_push(ap) VAL [__this_module={8589934597:8589934603}, ap={24:0}, chan={0:0}, chan={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ppp_sync_push(ap)=0, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6444] CALL, EXPR test_and_set_bit(1L, (unsigned long volatile *)(& ap->xmit_flags)) VAL [\old(nr)=1, __this_module={8589934597:8589934603}, addr={24:156}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5290] char c ; [L5294] return ((int )((signed char )c) != 0); VAL [\old(nr)=1, \result=0, __this_module={8589934597:8589934603}, addr={24:156}, addr={24:156}, c=0, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, nr=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6444] RET, EXPR test_and_set_bit(1L, (unsigned long volatile *)(& ap->xmit_flags)) VAL [__this_module={8589934597:8589934603}, ap={24:0}, chan={0:0}, chan={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}, test_and_set_bit(1L, (unsigned long volatile *)(& ap->xmit_flags))=0] [L6444] tmp = test_and_set_bit(1L, (unsigned long volatile *)(& ap->xmit_flags)) [L6445] COND FALSE !(tmp != 0) [L6449] CALL, EXPR ppp_sync_txmunge(ap, skb) [L6390] int proto ; [L6391] unsigned char *data ; [L6392] int islcp ; [L6393] u16 tmp ; [L6394] struct sk_buff *npkt ; [L6395] struct sk_buff *tmp___0 ; [L6396] unsigned char *tmp___1 ; [L6397] unsigned int tmp___2 ; [L6399] EXPR skb->data [L6399] data = skb->data [L6400] CALL, EXPR get_unaligned_be16((void const *)data) [L5737] __u16 tmp ; [L5739] CALL, EXPR __be16_to_cpup((__be16 const *)p) [L5328] __u16 tmp ; [L5330] CALL, EXPR __swab16p(p) [L5320] __u16 tmp ; [L5322] EXPR \read(*p) [L5322] CALL, EXPR __fswab16((int )*p) [L5315] return ((__u16 )((int )((short )((int )val << 8)) | (int )((short )((int )val >> 8)))); VAL [\old(val)=6656, \result=-81887, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, val=6656] [L5322] RET, EXPR __fswab16((int )*p) [L5322] tmp = __fswab16((int )*p) [L5323] return (tmp); VAL [\result=-81887, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, p={1:55}, p={1:55}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185] [L5330] RET, EXPR __swab16p(p) [L5330] tmp = __swab16p(p) [L5331] return (tmp); VAL [\result=-81887, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, p={1:55}, p={1:55}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185] [L5739] RET, EXPR __be16_to_cpup((__be16 const *)p) [L5739] tmp = __be16_to_cpup((__be16 const *)p) [L5740] return (tmp); VAL [\result=-81887, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, p={1:55}, p={1:55}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185] [L6400] RET, EXPR get_unaligned_be16((void const *)data) [L6400] tmp = get_unaligned_be16((void const *)data) [L6401] proto = (int )tmp [L6402] EXPR proto == 49185 && (unsigned int )*(data + 2UL) != 0U [L6402] EXPR data + 2UL [L6402] EXPR proto == 49185 && (unsigned int )*(data + 2UL) != 0U VAL [__this_module={8589934597:8589934603}, ap={24:0}, ap={24:0}, data={1:55}, data + 2UL=-249, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, proto == 49185 && (unsigned int )*(data + 2UL) != 0U=1, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185] [L6402] EXPR (proto == 49185 && (unsigned int )*(data + 2UL) != 0U) && (unsigned int )*(data + 2UL) <= 7U [L6402] EXPR data + 2UL [L6402] EXPR (proto == 49185 && (unsigned int )*(data + 2UL) != 0U) && (unsigned int )*(data + 2UL) <= 7U VAL [(proto == 49185 && (unsigned int )*(data + 2UL) != 0U) && (unsigned int )*(data + 2UL) <= 7U=1, __this_module={8589934597:8589934603}, ap={24:0}, ap={24:0}, data={1:55}, data + 2UL=-249, data + 2UL=-249, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, proto == 49185 && (unsigned int )*(data + 2UL) != 0U=1, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185] [L6402] islcp = (proto == 49185 && (unsigned int )*(data + 2UL) != 0U) && (unsigned int )*(data + 2UL) <= 7U [L6403] EXPR \read(*data) [L6403] EXPR (unsigned int )*data == 0U && (int )ap->flags & 1 [L6403] EXPR ap->flags [L6403] EXPR (unsigned int )*data == 0U && (int )ap->flags & 1 VAL [(unsigned int )*data == 0U && (int )ap->flags & 1=1, \read(*data)=-58880, __this_module={8589934597:8589934603}, ap={24:0}, ap={24:0}, ap->flags=8589934587, data={1:55}, disc_data_lock={22:0}, islcp=1, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185] [L6403] COND FALSE !(((unsigned int )*data == 0U && (int )ap->flags & 1) && islcp == 0) [L6407] EXPR ap->flags VAL [__this_module={8589934597:8589934603}, ap={24:0}, ap={24:0}, ap->flags=8589934587, data={1:55}, disc_data_lock={22:0}, islcp=1, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185] [L6407] COND TRUE (ap->flags & 2U) == 0U || islcp != 0 [L6408] CALL, EXPR skb_headroom((struct sk_buff const *)skb) [L5565] EXPR skb->data [L5565] EXPR skb->head [L5565] return ((unsigned int )((long )skb->data) - (unsigned int )((long )skb->head)); [L6408] RET, EXPR skb_headroom((struct sk_buff const *)skb) [L6408] tmp___2 = skb_headroom((struct sk_buff const *)skb) [L6409] COND TRUE tmp___2 <= 1U [L6410] EXPR skb->len VAL [__this_module={8589934597:8589934603}, ap={24:0}, ap={24:0}, data={1:55}, disc_data_lock={22:0}, islcp=1, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, skb->len=4294967296, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185, tmp___2=0] [L6410] CALL, EXPR ldv_dev_alloc_skb_15(skb->len + 2U) VAL [\old(last_index)=0, \old(length)=2, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6970] struct sk_buff *tmp ; VAL [\old(last_index)=0, \old(length)=2, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, length=2, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6972] CALL, EXPR ldv_skb_alloc() VAL [\old(last_index)=0, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7150] void *skb ; [L7151] void *tmp___7 ; VAL [\old(last_index)=0, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7153] CALL, EXPR ldv_zalloc(sizeof(struct sk_buff___0 )) VAL [\old(last_index)=0, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND FALSE !(tmp___0 != 0) [L5639] EXPR, FCALL calloc(1UL, size) [L5639] tmp = calloc(1UL, size) [L5640] p = tmp VAL [\old(last_index)=0, \old(size)=248, __this_module={8589934597:8589934603}, calloc(1UL, size)={-18446744073709551615:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, p={-18446744073709551615:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=248, sync_ops={21:0}, sync_ops_group0={0:0}, tmp={-18446744073709551615:0}, tmp___0=0] [L5641] CALL assume_abort_if_not((unsigned long )p != (unsigned long )((void *)0)) VAL [\old(cond)=1, \old(last_index)=0, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5610] COND FALSE !(!cond) VAL [\old(cond)=1, \old(last_index)=0, __this_module={8589934597:8589934603}, cond=1, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5641] RET assume_abort_if_not((unsigned long )p != (unsigned long )((void *)0)) VAL [\old(last_index)=0, \old(size)=248, __this_module={8589934597:8589934603}, calloc(1UL, size)={-18446744073709551615:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, p={-18446744073709551615:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=248, sync_ops={21:0}, sync_ops_group0={0:0}, tmp={-18446744073709551615:0}, tmp___0=0] [L5642] return (p); VAL [\old(last_index)=0, \old(size)=248, \result={-18446744073709551615:0}, __this_module={8589934597:8589934603}, calloc(1UL, size)={-18446744073709551615:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, p={-18446744073709551615:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=248, sync_ops={21:0}, sync_ops_group0={0:0}, tmp={-18446744073709551615:0}, tmp___0=0] [L7153] RET, EXPR ldv_zalloc(sizeof(struct sk_buff___0 )) VAL [\old(last_index)=0, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_zalloc(sizeof(struct sk_buff___0 ))={-18446744073709551615:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7153] tmp___7 = ldv_zalloc(sizeof(struct sk_buff___0 )) [L7154] skb = (struct sk_buff___0 *)tmp___7 VAL [\old(last_index)=0, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, skb={-18446744073709551615:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___7={-18446744073709551615:0}] [L7155] COND FALSE !(! skb) [L7158] CALL ldv_set_add(LDV_SKBS, skb) [L7026] int i ; [L7028] i = 0 VAL [\old(last_index)=0, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, e={-18446744073709551615:0}, e={-18446744073709551615:0}, i=0, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7029] COND TRUE 1 VAL [\old(last_index)=0, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, e={-18446744073709551615:0}, e={-18446744073709551615:0}, i=0, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7030] COND FALSE !(i < last_index) VAL [\old(last_index)=0, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, e={-18446744073709551615:0}, e={-18446744073709551615:0}, i=0, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7040] COND TRUE last_index < 15 [L7041] set_impl[last_index] = e [L7042] last_index = last_index + 1 VAL [\old(last_index)=0, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, e={-18446744073709551615:0}, e={-18446744073709551615:0}, i=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7158] RET ldv_set_add(LDV_SKBS, skb) [L7159] return (skb); VAL [\old(last_index)=0, \result={-18446744073709551615:0}, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, skb={-18446744073709551615:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___7={-18446744073709551615:0}] [L6972] RET, EXPR ldv_skb_alloc() VAL [\old(last_index)=0, \old(length)=2, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_skb_alloc()={-18446744073709551615:0}, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, length=2, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6972] tmp = ldv_skb_alloc() [L6973] return (tmp); VAL [\old(last_index)=0, \old(length)=2, \result={-18446744073709551615:0}, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, length=2, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp={-18446744073709551615:0}] [L6410] RET, EXPR ldv_dev_alloc_skb_15(skb->len + 2U) VAL [__this_module={8589934597:8589934603}, ap={24:0}, ap={24:0}, data={1:55}, disc_data_lock={22:0}, islcp=1, last_index=1, ldv_dev_alloc_skb_15(skb->len + 2U)={-18446744073709551615:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, skb->len=4294967296, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185, tmp___2=0] [L6410] tmp___0 = ldv_dev_alloc_skb_15(skb->len + 2U) [L6411] npkt = tmp___0 VAL [__this_module={8589934597:8589934603}, ap={24:0}, ap={24:0}, data={1:55}, disc_data_lock={22:0}, islcp=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, npkt={-18446744073709551615:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185, tmp___0={-18446744073709551615:0}, tmp___2=0] [L6412] COND FALSE !((unsigned long )npkt == (unsigned long )((struct sk_buff *)0)) VAL [__this_module={8589934597:8589934603}, ap={24:0}, ap={24:0}, data={1:55}, disc_data_lock={22:0}, islcp=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, npkt={-18446744073709551615:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185, tmp___0={-18446744073709551615:0}, tmp___2=0] [L6417] CALL skb_reserve(npkt, 2) VAL [\old(len)=2, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, skb={-18446744073709551615:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5579] EXPR skb->data [L5579] skb->data = skb->data + (unsigned long )len [L5580] EXPR skb->tail [L5580] skb->tail = skb->tail + (sk_buff_data_t )len [L6417] RET skb_reserve(npkt, 2) VAL [__this_module={8589934597:8589934603}, ap={24:0}, ap={24:0}, data={1:55}, disc_data_lock={22:0}, islcp=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, npkt={-18446744073709551615:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185, tmp___0={-18446744073709551615:0}, tmp___2=0] [L6418] EXPR skb->len VAL [__this_module={8589934597:8589934603}, ap={24:0}, ap={24:0}, data={1:55}, disc_data_lock={22:0}, islcp=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, npkt={-18446744073709551615:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, skb->len=4294967296, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185, tmp___0={-18446744073709551615:0}, tmp___2=0] [L6418] CALL, EXPR skb_put(npkt, skb->len) VAL [\old(arg1)=4294967296, __this_module={8589934597:8589934603}, arg0={-18446744073709551615:0}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7333] EXPR arg0->data [L7333] EXPR arg0->tail [L7333] unsigned char *ret_val = arg0->data + arg0->tail; [L7334] EXPR arg0->tail [L7334] arg0->tail += arg1 [L7335] return ret_val; VAL [\old(arg1)=4294967296, \result={8589934599:39}, __this_module={8589934597:8589934603}, arg0={-18446744073709551615:0}, arg0={-18446744073709551615:0}, arg1=4294967296, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, ret_val={8589934599:39}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6418] RET, EXPR skb_put(npkt, skb->len) VAL [__this_module={8589934597:8589934603}, ap={24:0}, ap={24:0}, data={1:55}, disc_data_lock={22:0}, islcp=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, npkt={-18446744073709551615:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, skb->len=4294967296, skb_put(npkt, skb->len)={8589934599:39}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185, tmp___0={-18446744073709551615:0}, tmp___2=0] [L6418] tmp___1 = skb_put(npkt, skb->len) [L6419] EXPR skb->len [L6419] CALL skb_copy_from_linear_data((struct sk_buff const *)skb, (void *)tmp___1, skb->len) [L5592] size_t __len ; [L5593] void *__ret ; [L5595] __len = (size_t )len [L5596] EXPR skb->data VAL [\old(len)=0, __len=0, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, len=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, skb->data={1:55}, sync_ops={21:0}, sync_ops_group0={0:0}, to={8589934599:39}, to={8589934599:39}] [L5596] EXPR, FCALL memcpy(to, (void const *)skb->data, __len) VAL [\old(len)=0, __len=0, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, len=0, memcpy(to, (void const *)skb->data, __len)={8589934599:39}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, skb->data={1:55}, sync_ops={21:0}, sync_ops_group0={0:0}, to={8589934599:39}, to={8589934599:39}] [L5596] __ret = memcpy(to, (void const *)skb->data, __len) [L6419] RET skb_copy_from_linear_data((struct sk_buff const *)skb, (void *)tmp___1, skb->len) [L6420] CALL ldv_consume_skb_17(skb) [L6986] CALL ldv_skb_free(ldv_func_arg1) VAL [\old(last_index)=1, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, skb={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7173] CALL ldv_set_remove(LDV_SKBS, skb) VAL [\old(last_index)=1, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, e={0:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7051] int i ; [L7052] int deleted_index ; [L7054] deleted_index = -1 [L7055] i = 0 VAL [\old(last_index)=1, __this_module={8589934597:8589934603}, deleted_index=-1, disc_data_lock={22:0}, e={0:0}, e={0:0}, i=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7056] COND TRUE 1 VAL [\old(last_index)=1, __this_module={8589934597:8589934603}, deleted_index=-1, disc_data_lock={22:0}, e={0:0}, e={0:0}, i=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7057] COND TRUE i < last_index VAL [\old(last_index)=1, __this_module={8589934597:8589934603}, deleted_index=-1, disc_data_lock={22:0}, e={0:0}, e={0:0}, i=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7061] EXPR set_impl[i] VAL [\old(last_index)=1, __this_module={8589934597:8589934603}, deleted_index=-1, disc_data_lock={22:0}, e={0:0}, e={0:0}, i=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, set_impl[i]={-18446744073709551615:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7061] COND FALSE !((unsigned long )set_impl[i] == (unsigned long )e) [L7066] i = i + 1 VAL [\old(last_index)=1, __this_module={8589934597:8589934603}, deleted_index=-1, disc_data_lock={22:0}, e={0:0}, e={0:0}, i=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7056] COND TRUE 1 VAL [\old(last_index)=1, __this_module={8589934597:8589934603}, deleted_index=-1, disc_data_lock={22:0}, e={0:0}, e={0:0}, i=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7057] COND FALSE !(i < last_index) VAL [\old(last_index)=1, __this_module={8589934597:8589934603}, deleted_index=-1, disc_data_lock={22:0}, e={0:0}, e={0:0}, i=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7068] COND FALSE !(deleted_index != -1) VAL [\old(last_index)=1, __this_module={8589934597:8589934603}, deleted_index=-1, disc_data_lock={22:0}, e={0:0}, e={0:0}, i=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7173] RET ldv_set_remove(LDV_SKBS, skb) VAL [\old(last_index)=1, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6986] RET ldv_skb_free(ldv_func_arg1) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=1, ldv_func_arg1={0:0}, ldv_func_arg1={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6420] RET ldv_consume_skb_17(skb) [L6421] skb = npkt VAL [__this_module={8589934597:8589934603}, ap={24:0}, ap={24:0}, data={1:55}, disc_data_lock={22:0}, islcp=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, npkt={-18446744073709551615:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={-18446744073709551615:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185, tmp___0={-18446744073709551615:0}, tmp___1={8589934599:39}, tmp___2=0] [L6424] CALL skb_push(skb, 2U) VAL [\old(arg1)=2, __this_module={8589934597:8589934603}, arg0={-18446744073709551615:0}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7330] CALL, EXPR ldv_malloc(sizeof(unsigned char)) VAL [\old(size)=1, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5614] void *p ; [L5615] void *tmp ; [L5616] int tmp___0 ; [L5618] tmp___0 = __VERIFIER_nondet_int() [L5619] COND TRUE tmp___0 != 0 [L5620] return ((void *)0); VAL [\old(size)=1, \result={0:0}, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=1, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=1] [L7330] RET, EXPR ldv_malloc(sizeof(unsigned char)) VAL [\old(arg1)=2, __this_module={8589934597:8589934603}, arg0={-18446744073709551615:0}, arg0={-18446744073709551615:0}, arg1=2, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_malloc(sizeof(unsigned char))={0:0}, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7330] return ldv_malloc(sizeof(unsigned char)); [L6424] RET skb_push(skb, 2U) VAL [__this_module={8589934597:8589934603}, ap={24:0}, ap={24:0}, data={1:55}, disc_data_lock={22:0}, islcp=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, npkt={-18446744073709551615:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={-18446744073709551615:0}, skb_push(skb, 2U)={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185, tmp___0={-18446744073709551615:0}, tmp___1={8589934599:39}, tmp___2=0] [L6425] EXPR skb->data [L6425] *(skb->data) = 255U [L6426] EXPR skb->data [L6426] *(skb->data + 1UL) = 3U [L6429] ap->last_xmit = jiffies [L6430] (unsigned long )skb != (unsigned long )((struct sk_buff *)0) && (ap->flags & 262144U) != 0U [L6430] EXPR ap->flags [L6430] (unsigned long )skb != (unsigned long )((struct sk_buff *)0) && (ap->flags & 262144U) != 0U VAL [(unsigned long )skb != (unsigned long )((struct sk_buff *)0) && (ap->flags & 262144U) != 0U=0, __this_module={8589934597:8589934603}, ap={24:0}, ap={24:0}, ap->flags=8589934587, data={1:55}, disc_data_lock={22:0}, islcp=1, jiffies=8589934592, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, npkt={-18446744073709551615:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={-18446744073709551615:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185, tmp___0={-18446744073709551615:0}, tmp___1={8589934599:39}, tmp___2=0] [L6430] COND FALSE !((unsigned long )skb != (unsigned long )((struct sk_buff *)0) && (ap->flags & 262144U) != 0U) [L6434] return (skb); VAL [\result={-18446744073709551615:0}, __this_module={8589934597:8589934603}, ap={24:0}, ap={24:0}, data={1:55}, disc_data_lock={22:0}, islcp=1, jiffies=8589934592, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, npkt={-18446744073709551615:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={-18446744073709551615:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185, tmp___0={-18446744073709551615:0}, tmp___1={8589934599:39}, tmp___2=0] [L6449] RET, EXPR ppp_sync_txmunge(ap, skb) [L6449] skb = ppp_sync_txmunge(ap, skb) [L6450] COND TRUE (unsigned long )skb != (unsigned long )((struct sk_buff *)0) [L6451] ap->tpkt = skb VAL [__this_module={8589934597:8589934603}, ap={24:0}, chan={0:0}, chan={0:0}, disc_data_lock={22:0}, jiffies=8589934592, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={-18446744073709551615:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0] [L6455] CALL ppp_sync_push(ap) VAL [\old(last_index)=1, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, jiffies=8589934592, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6461] int sent ; [L6462] int done ; [L6463] struct tty_struct *tty ; [L6464] int tty_stuffed ; [L6465] int tmp ; [L6466] int tmp___0 ; [L6467] int tmp___1 ; [L6468] int tmp___2 ; [L6470] done = 0 [L6471] EXPR ap->tty [L6471] tty = ap->tty [L6472] tty_stuffed = 0 VAL [\old(last_index)=1, __this_module={8589934597:8589934603}, ap={24:0}, ap={24:0}, disc_data_lock={22:0}, done=0, jiffies=8589934592, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tty={-18446744073709551615:0}, tty_stuffed=0] [L6473] CALL, EXPR spin_trylock_bh(& ap->xmit_lock) VAL [\old(last_index)=1, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, jiffies=8589934592, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5417] int tmp ; [L5419] CALL, EXPR _raw_spin_trylock_bh(& lock->ldv_6338.rlock) [L7268] return __VERIFIER_nondet_int(); [L5419] RET, EXPR _raw_spin_trylock_bh(& lock->ldv_6338.rlock) [L5419] tmp = _raw_spin_trylock_bh(& lock->ldv_6338.rlock) [L5420] return (tmp); VAL [\old(last_index)=1, \result=0, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, jiffies=8589934592, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, lock={24:20}, lock={24:20}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0] [L6473] RET, EXPR spin_trylock_bh(& ap->xmit_lock) VAL [\old(last_index)=1, __this_module={8589934597:8589934603}, ap={24:0}, ap={24:0}, disc_data_lock={22:0}, done=0, jiffies=8589934592, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, spin_trylock_bh(& ap->xmit_lock)=0, sync_ops={21:0}, sync_ops_group0={0:0}, tty={-18446744073709551615:0}, tty_stuffed=0] [L6473] tmp = spin_trylock_bh(& ap->xmit_lock) [L6474] COND TRUE tmp == 0 [L6475] return (0); VAL [\old(last_index)=1, \result=0, __this_module={8589934597:8589934603}, ap={24:0}, ap={24:0}, disc_data_lock={22:0}, done=0, jiffies=8589934592, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tty={-18446744073709551615:0}, tty_stuffed=0] [L6455] RET ppp_sync_push(ap) VAL [__this_module={8589934597:8589934603}, ap={24:0}, chan={0:0}, chan={0:0}, disc_data_lock={22:0}, jiffies=8589934592, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ppp_sync_push(ap)=0, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={-18446744073709551615:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0] [L6456] return (1); VAL [\result=1, __this_module={8589934597:8589934603}, ap={24:0}, chan={0:0}, chan={0:0}, disc_data_lock={22:0}, jiffies=8589934592, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={-18446744073709551615:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0] [L6882] RET ppp_sync_send(sync_ops_group0, ldvarg16) [L6883] ldv_state_variable_2 = 1 VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, jiffies=8589934592, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldvarg0=8589934607, ldvarg1=13, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=8589934595, ldvarg15=4294967292, ldvarg16={0:0}, ldvarg2={0:0}, ldvarg3=-2, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=8589934595, tmp___14={0:0}, tmp___15=4294967292, tmp___16=2, tmp___18=1, tmp___19=0, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=13, tmp___8={0:0}, tmp___9={0:0}] [L6740] tmp___16 = __VERIFIER_nondet_int() [L6742] case 0: [L6838] case 1: VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, jiffies=8589934592, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldvarg0=8589934607, ldvarg1=13, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=8589934595, ldvarg15=4294967292, ldvarg16={0:0}, ldvarg2={0:0}, ldvarg3=-2, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=8589934595, tmp___14={0:0}, tmp___15=4294967292, tmp___16=1, tmp___18=1, tmp___19=0, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=13, tmp___8={0:0}, tmp___9={0:0}] [L6839] COND TRUE ldv_state_variable_0 != 0 [L6840] tmp___18 = __VERIFIER_nondet_int() [L6842] case 0: VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, jiffies=8589934592, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldvarg0=8589934607, ldvarg1=13, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=8589934595, ldvarg15=4294967292, ldvarg16={0:0}, ldvarg2={0:0}, ldvarg3=-2, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=8589934595, tmp___14={0:0}, tmp___15=4294967292, tmp___16=1, tmp___18=0, tmp___19=0, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=13, tmp___8={0:0}, tmp___9={0:0}] [L6843] COND TRUE ldv_state_variable_0 == 3 && ref_cnt == 0 [L6844] CALL ppp_sync_cleanup() [L6627] int tmp ; [L6629] CALL, EXPR tty_unregister_ldisc(14) [L7366] return __VERIFIER_nondet_int(); [L6629] RET, EXPR tty_unregister_ldisc(14) [L6629] tmp = tty_unregister_ldisc(14) [L6630] COND TRUE tmp != 0 [L6844] RET ppp_sync_cleanup() [L6845] ldv_state_variable_0 = 2 VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, jiffies=8589934592, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=1, ldvarg0=8589934607, ldvarg1=13, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=8589934595, ldvarg15=4294967292, ldvarg16={0:0}, ldvarg2={0:0}, ldvarg3=-2, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=-2, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=8589934595, tmp___14={0:0}, tmp___15=4294967292, tmp___16=1, tmp___18=0, tmp___19=0, tmp___2=8589934607, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=13, tmp___8={0:0}, tmp___9={0:0}] [L6907] CALL ldv_check_final_state() [L7217] int tmp___7 ; [L7219] CALL, EXPR ldv_set_is_empty(LDV_SKBS) [L7108] return (last_index == 0); VAL [\result=0, __this_module={8589934597:8589934603}, disc_data_lock={22:0}, jiffies=8589934592, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7219] RET, EXPR ldv_set_is_empty(LDV_SKBS) [L7219] tmp___7 = ldv_set_is_empty(LDV_SKBS) [L7220] COND FALSE !(\read(tmp___7)) VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, jiffies=8589934592, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___7=0] [L7222] CALL ldv_error() VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, jiffies=8589934592, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5666] reach_error() VAL [__this_module={8589934597:8589934603}, disc_data_lock={22:0}, jiffies=8589934592, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 645 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 54.2s, OverallIterations: 17, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 38.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28663 SdHoareTripleChecker+Valid, 27.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27521 mSDsluCounter, 82773 SdHoareTripleChecker+Invalid, 23.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 64614 mSDsCounter, 11608 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35429 IncrementalHoareTripleChecker+Invalid, 47037 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11608 mSolverCounterUnsat, 18159 mSDtfsCounter, 35429 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1722 GetRequests, 1474 SyntacticMatches, 4 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1213 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24889occurred in iteration=12, InterpolantAutomatonStates: 210, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 51055 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 3666 NumberOfCodeBlocks, 3666 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 3609 ConstructedInterpolants, 0 QuantifiedInterpolants, 9545 SizeOfPredicates, 20 NumberOfNonLiveVariables, 4333 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 20 InterpolantComputations, 15 PerfectInterpolantSequences, 6025/6075 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-21 11:10:32,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 389f662f7096bd36438270dc54f296be4073de8eeb864b893c17044d6fb4cc06 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 11:10:33,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 11:10:33,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 11:10:33,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 11:10:33,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 11:10:33,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 11:10:33,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 11:10:33,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 11:10:33,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 11:10:33,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 11:10:33,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 11:10:33,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 11:10:33,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 11:10:33,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 11:10:33,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 11:10:33,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 11:10:33,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 11:10:33,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 11:10:33,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 11:10:33,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 11:10:33,910 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 11:10:33,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 11:10:33,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 11:10:33,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 11:10:33,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 11:10:33,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 11:10:33,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 11:10:33,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 11:10:33,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 11:10:33,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 11:10:33,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 11:10:33,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 11:10:33,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 11:10:33,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 11:10:33,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 11:10:33,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 11:10:33,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 11:10:33,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 11:10:33,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 11:10:33,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 11:10:33,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 11:10:33,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 11:10:33,934 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-21 11:10:33,958 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 11:10:33,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 11:10:33,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 11:10:33,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 11:10:33,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 11:10:33,960 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 11:10:33,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 11:10:33,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 11:10:33,960 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 11:10:33,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 11:10:33,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 11:10:33,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 11:10:33,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 11:10:33,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 11:10:33,971 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 11:10:33,971 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 11:10:33,972 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 11:10:33,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 11:10:33,972 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 11:10:33,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 11:10:33,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 11:10:33,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 11:10:33,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 11:10:33,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:10:33,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 11:10:33,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 11:10:33,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 11:10:33,973 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 11:10:33,974 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 11:10:33,974 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 11:10:33,974 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 11:10:33,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 11:10:33,975 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 11:10:33,975 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 389f662f7096bd36438270dc54f296be4073de8eeb864b893c17044d6fb4cc06 [2022-07-21 11:10:34,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 11:10:34,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 11:10:34,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 11:10:34,239 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 11:10:34,240 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 11:10:34,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2022-07-21 11:10:34,292 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e364d76d3/2745f7b048cc4bf29cad03c9ded209bd/FLAG8dc700e2b [2022-07-21 11:10:34,846 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 11:10:34,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2022-07-21 11:10:34,879 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e364d76d3/2745f7b048cc4bf29cad03c9ded209bd/FLAG8dc700e2b [2022-07-21 11:10:35,072 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e364d76d3/2745f7b048cc4bf29cad03c9ded209bd [2022-07-21 11:10:35,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 11:10:35,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 11:10:35,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 11:10:35,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 11:10:35,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 11:10:35,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:10:35" (1/1) ... [2022-07-21 11:10:35,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d53f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:10:35, skipping insertion in model container [2022-07-21 11:10:35,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:10:35" (1/1) ... [2022-07-21 11:10:35,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 11:10:35,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 11:10:35,844 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i[163507,163520] [2022-07-21 11:10:36,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:10:36,103 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-21 11:10:36,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 11:10:36,236 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i[163507,163520] [2022-07-21 11:10:36,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:10:36,302 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 11:10:36,413 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i[163507,163520] [2022-07-21 11:10:36,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:10:36,530 INFO L208 MainTranslator]: Completed translation [2022-07-21 11:10:36,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:10:36 WrapperNode [2022-07-21 11:10:36,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 11:10:36,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 11:10:36,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 11:10:36,532 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 11:10:36,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:10:36" (1/1) ... [2022-07-21 11:10:36,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:10:36" (1/1) ... [2022-07-21 11:10:36,662 INFO L137 Inliner]: procedures = 190, calls = 448, calls flagged for inlining = 92, calls inlined = 85, statements flattened = 1716 [2022-07-21 11:10:36,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 11:10:36,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 11:10:36,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 11:10:36,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 11:10:36,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:10:36" (1/1) ... [2022-07-21 11:10:36,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:10:36" (1/1) ... [2022-07-21 11:10:36,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:10:36" (1/1) ... [2022-07-21 11:10:36,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:10:36" (1/1) ... [2022-07-21 11:10:36,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:10:36" (1/1) ... [2022-07-21 11:10:36,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:10:36" (1/1) ... [2022-07-21 11:10:36,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:10:36" (1/1) ... [2022-07-21 11:10:36,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 11:10:36,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 11:10:36,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 11:10:36,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 11:10:36,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:10:36" (1/1) ... [2022-07-21 11:10:36,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:10:36,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:10:36,817 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) [2022-07-21 11:10:36,837 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 [2022-07-21 11:10:36,854 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-21 11:10:36,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-21 11:10:36,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_15 [2022-07-21 11:10:36,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_15 [2022-07-21 11:10:36,855 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_poll [2022-07-21 11:10:36,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_poll [2022-07-21 11:10:36,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-21 11:10:36,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-21 11:10:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-07-21 11:10:36,856 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-07-21 11:10:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 11:10:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 11:10:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-21 11:10:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 11:10:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 11:10:36,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 11:10:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-07-21 11:10:36,857 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-07-21 11:10:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2022-07-21 11:10:36,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2022-07-21 11:10:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 11:10:36,857 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 11:10:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-07-21 11:10:36,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-07-21 11:10:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 11:10:36,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 11:10:36,858 INFO L130 BoogieDeclarations]: Found specification of procedure spin_trylock_bh [2022-07-21 11:10:36,858 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_trylock_bh [2022-07-21 11:10:36,858 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-21 11:10:36,858 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-21 11:10:36,859 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-07-21 11:10:36,859 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-07-21 11:10:36,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-21 11:10:36,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-21 11:10:36,859 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_synctty_ioctl [2022-07-21 11:10:36,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_synctty_ioctl [2022-07-21 11:10:36,859 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 11:10:36,860 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 11:10:36,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 11:10:36,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 11:10:36,860 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-07-21 11:10:36,860 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-07-21 11:10:36,860 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_close [2022-07-21 11:10:36,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_close [2022-07-21 11:10:36,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-21 11:10:36,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-21 11:10:36,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-21 11:10:36,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-21 11:10:36,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 11:10:36,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 11:10:36,862 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-21 11:10:36,862 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-21 11:10:36,863 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_print_buffer [2022-07-21 11:10:36,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_print_buffer [2022-07-21 11:10:36,863 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 11:10:36,863 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 11:10:36,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 11:10:36,864 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-07-21 11:10:36,864 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-07-21 11:10:36,864 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-21 11:10:36,864 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-21 11:10:36,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 11:10:36,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 11:10:36,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 11:10:36,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-21 11:10:36,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-21 11:10:36,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-21 11:10:36,865 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-07-21 11:10:36,865 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-07-21 11:10:36,866 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-07-21 11:10:36,866 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-07-21 11:10:36,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 11:10:36,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-07-21 11:10:36,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-07-21 11:10:36,866 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-07-21 11:10:36,866 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-07-21 11:10:36,866 INFO L130 BoogieDeclarations]: Found specification of procedure sp_put [2022-07-21 11:10:36,866 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_put [2022-07-21 11:10:36,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-21 11:10:36,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-21 11:10:36,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 11:10:36,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-21 11:10:36,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 11:10:36,867 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-07-21 11:10:36,868 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-07-21 11:10:36,868 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_hangup [2022-07-21 11:10:36,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_hangup [2022-07-21 11:10:36,868 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-21 11:10:36,869 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-21 11:10:36,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 11:10:36,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-21 11:10:36,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-21 11:10:36,900 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-21 11:10:36,901 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-21 11:10:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure sp_get [2022-07-21 11:10:36,901 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_get [2022-07-21 11:10:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-21 11:10:36,901 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-21 11:10:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-21 11:10:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-07-21 11:10:36,902 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-07-21 11:10:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-21 11:10:36,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-21 11:10:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-21 11:10:36,902 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-21 11:10:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 11:10:36,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 11:10:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_push [2022-07-21 11:10:36,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_push [2022-07-21 11:10:37,334 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 11:10:37,336 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 11:10:37,467 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 11:10:43,313 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 11:10:43,322 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 11:10:43,322 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-21 11:10:43,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:10:43 BoogieIcfgContainer [2022-07-21 11:10:43,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 11:10:43,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 11:10:43,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 11:10:43,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 11:10:43,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:10:35" (1/3) ... [2022-07-21 11:10:43,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec99173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:10:43, skipping insertion in model container [2022-07-21 11:10:43,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:10:36" (2/3) ... [2022-07-21 11:10:43,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec99173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:10:43, skipping insertion in model container [2022-07-21 11:10:43,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:10:43" (3/3) ... [2022-07-21 11:10:43,333 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2022-07-21 11:10:43,342 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 11:10:43,343 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 11:10:43,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 11:10:43,402 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@75ed6ceb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@29088592 [2022-07-21 11:10:43,402 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 11:10:43,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 644 states, 483 states have (on average 1.391304347826087) internal successors, (672), 499 states have internal predecessors, (672), 120 states have call successors, (120), 40 states have call predecessors, (120), 39 states have return successors, (116), 114 states have call predecessors, (116), 116 states have call successors, (116) [2022-07-21 11:10:43,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-21 11:10:43,425 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:10:43,425 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:10:43,426 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:10:43,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:10:43,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1758611482, now seen corresponding path program 1 times [2022-07-21 11:10:43,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:10:43,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092618696] [2022-07-21 11:10:43,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:43,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:10:43,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:10:43,449 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:10:43,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 11:10:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:43,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:10:43,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:10:43,869 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-21 11:10:43,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:10:43,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:10:43,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092618696] [2022-07-21 11:10:43,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092618696] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:10:43,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:10:43,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 11:10:43,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711815902] [2022-07-21 11:10:43,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:10:43,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:10:43,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:10:43,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:10:43,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:10:43,908 INFO L87 Difference]: Start difference. First operand has 644 states, 483 states have (on average 1.391304347826087) internal successors, (672), 499 states have internal predecessors, (672), 120 states have call successors, (120), 40 states have call predecessors, (120), 39 states have return successors, (116), 114 states have call predecessors, (116), 116 states have call successors, (116) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-21 11:10:44,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:10:44,095 INFO L93 Difference]: Finished difference Result 1877 states and 2724 transitions. [2022-07-21 11:10:44,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:10:44,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 78 [2022-07-21 11:10:44,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:10:44,121 INFO L225 Difference]: With dead ends: 1877 [2022-07-21 11:10:44,121 INFO L226 Difference]: Without dead ends: 1222 [2022-07-21 11:10:44,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:10:44,128 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 833 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:10:44,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 1889 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 11:10:44,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-07-21 11:10:44,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1222. [2022-07-21 11:10:44,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 926 states have (on average 1.3736501079913608) internal successors, (1272), 946 states have internal predecessors, (1272), 219 states have call successors, (219), 77 states have call predecessors, (219), 76 states have return successors, (218), 214 states have call predecessors, (218), 218 states have call successors, (218) [2022-07-21 11:10:44,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1709 transitions. [2022-07-21 11:10:44,221 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1709 transitions. Word has length 78 [2022-07-21 11:10:44,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:10:44,221 INFO L495 AbstractCegarLoop]: Abstraction has 1222 states and 1709 transitions. [2022-07-21 11:10:44,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-21 11:10:44,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1709 transitions. [2022-07-21 11:10:44,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-21 11:10:44,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:10:44,225 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:10:44,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-21 11:10:44,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:10:44,439 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:10:44,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:10:44,439 INFO L85 PathProgramCache]: Analyzing trace with hash -152487068, now seen corresponding path program 1 times [2022-07-21 11:10:44,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:10:44,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793099989] [2022-07-21 11:10:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:44,440 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:10:44,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:10:44,441 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:10:44,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 11:10:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:44,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 11:10:44,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:10:44,899 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-21 11:10:44,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:10:44,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:10:44,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793099989] [2022-07-21 11:10:44,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793099989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:10:44,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:10:44,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:10:44,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597615485] [2022-07-21 11:10:44,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:10:44,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:10:44,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:10:44,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:10:44,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:10:44,901 INFO L87 Difference]: Start difference. First operand 1222 states and 1709 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-21 11:10:45,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:10:45,097 INFO L93 Difference]: Finished difference Result 3615 states and 5103 transitions. [2022-07-21 11:10:45,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 11:10:45,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 82 [2022-07-21 11:10:45,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:10:45,109 INFO L225 Difference]: With dead ends: 3615 [2022-07-21 11:10:45,109 INFO L226 Difference]: Without dead ends: 2411 [2022-07-21 11:10:45,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:10:45,114 INFO L413 NwaCegarLoop]: 1003 mSDtfsCounter, 863 mSDsluCounter, 2865 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 3868 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:10:45,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 3868 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 11:10:45,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2022-07-21 11:10:45,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 2403. [2022-07-21 11:10:45,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2403 states, 1823 states have (on average 1.3752057048820625) internal successors, (2507), 1863 states have internal predecessors, (2507), 427 states have call successors, (427), 153 states have call predecessors, (427), 152 states have return successors, (464), 418 states have call predecessors, (464), 426 states have call successors, (464) [2022-07-21 11:10:45,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 3398 transitions. [2022-07-21 11:10:45,206 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 3398 transitions. Word has length 82 [2022-07-21 11:10:45,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:10:45,206 INFO L495 AbstractCegarLoop]: Abstraction has 2403 states and 3398 transitions. [2022-07-21 11:10:45,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-21 11:10:45,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 3398 transitions. [2022-07-21 11:10:45,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-21 11:10:45,213 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:10:45,213 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:10:45,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 11:10:45,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:10:45,428 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:10:45,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:10:45,428 INFO L85 PathProgramCache]: Analyzing trace with hash -950375967, now seen corresponding path program 1 times [2022-07-21 11:10:45,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:10:45,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882295400] [2022-07-21 11:10:45,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:45,429 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:10:45,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:10:45,430 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:10:45,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 11:10:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:45,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:10:45,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:10:45,841 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-21 11:10:45,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:10:45,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:10:45,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882295400] [2022-07-21 11:10:45,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882295400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:10:45,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:10:45,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 11:10:45,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728209571] [2022-07-21 11:10:45,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:10:45,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:10:45,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:10:45,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:10:45,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:10:45,843 INFO L87 Difference]: Start difference. First operand 2403 states and 3398 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 11:10:46,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:10:46,056 INFO L93 Difference]: Finished difference Result 6105 states and 8595 transitions. [2022-07-21 11:10:46,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:10:46,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2022-07-21 11:10:46,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:10:46,071 INFO L225 Difference]: With dead ends: 6105 [2022-07-21 11:10:46,071 INFO L226 Difference]: Without dead ends: 3726 [2022-07-21 11:10:46,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:10:46,080 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 500 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:10:46,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 1755 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 11:10:46,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3726 states. [2022-07-21 11:10:46,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3726 to 3713. [2022-07-21 11:10:46,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3713 states, 2831 states have (on average 1.375132462027552) internal successors, (3893), 2877 states have internal predecessors, (3893), 633 states have call successors, (633), 249 states have call predecessors, (633), 248 states have return successors, (688), 622 states have call predecessors, (688), 632 states have call successors, (688) [2022-07-21 11:10:46,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 5214 transitions. [2022-07-21 11:10:46,194 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 5214 transitions. Word has length 128 [2022-07-21 11:10:46,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:10:46,194 INFO L495 AbstractCegarLoop]: Abstraction has 3713 states and 5214 transitions. [2022-07-21 11:10:46,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 11:10:46,194 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 5214 transitions. [2022-07-21 11:10:46,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-21 11:10:46,200 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:10:46,200 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:10:46,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-21 11:10:46,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:10:46,414 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:10:46,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:10:46,414 INFO L85 PathProgramCache]: Analyzing trace with hash -944835305, now seen corresponding path program 1 times [2022-07-21 11:10:46,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:10:46,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20519563] [2022-07-21 11:10:46,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:46,415 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:10:46,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:10:46,416 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:10:46,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 11:10:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:46,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:10:46,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:10:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-21 11:10:46,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:10:46,823 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:10:46,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20519563] [2022-07-21 11:10:46,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20519563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:10:46,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:10:46,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 11:10:46,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973250545] [2022-07-21 11:10:46,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:10:46,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:10:46,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:10:46,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:10:46,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:10:46,826 INFO L87 Difference]: Start difference. First operand 3713 states and 5214 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 11:10:46,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:10:46,989 INFO L93 Difference]: Finished difference Result 9002 states and 12550 transitions. [2022-07-21 11:10:46,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:10:46,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 149 [2022-07-21 11:10:46,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:10:47,010 INFO L225 Difference]: With dead ends: 9002 [2022-07-21 11:10:47,010 INFO L226 Difference]: Without dead ends: 5313 [2022-07-21 11:10:47,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:10:47,021 INFO L413 NwaCegarLoop]: 1274 mSDtfsCounter, 546 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:10:47,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 2116 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 11:10:47,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5313 states. [2022-07-21 11:10:47,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5313 to 5304. [2022-07-21 11:10:47,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5304 states, 4047 states have (on average 1.3654558932542624) internal successors, (5526), 4129 states have internal predecessors, (5526), 874 states have call successors, (874), 383 states have call predecessors, (874), 382 states have return successors, (953), 855 states have call predecessors, (953), 873 states have call successors, (953) [2022-07-21 11:10:47,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5304 states to 5304 states and 7353 transitions. [2022-07-21 11:10:47,155 INFO L78 Accepts]: Start accepts. Automaton has 5304 states and 7353 transitions. Word has length 149 [2022-07-21 11:10:47,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:10:47,155 INFO L495 AbstractCegarLoop]: Abstraction has 5304 states and 7353 transitions. [2022-07-21 11:10:47,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 11:10:47,155 INFO L276 IsEmpty]: Start isEmpty. Operand 5304 states and 7353 transitions. [2022-07-21 11:10:47,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-21 11:10:47,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:10:47,163 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:10:47,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-21 11:10:47,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:10:47,377 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:10:47,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:10:47,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1643009203, now seen corresponding path program 1 times [2022-07-21 11:10:47,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:10:47,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401772908] [2022-07-21 11:10:47,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:47,378 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:10:47,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:10:47,379 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:10:47,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 11:10:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:47,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 11:10:47,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:10:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-21 11:10:47,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:10:47,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:10:47,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401772908] [2022-07-21 11:10:47,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [401772908] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:10:47,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:10:47,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:10:47,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745511420] [2022-07-21 11:10:47,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:10:47,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:10:47,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:10:47,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:10:47,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:10:47,809 INFO L87 Difference]: Start difference. First operand 5304 states and 7353 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 11:10:47,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:10:47,957 INFO L93 Difference]: Finished difference Result 8032 states and 11140 transitions. [2022-07-21 11:10:47,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 11:10:47,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 151 [2022-07-21 11:10:47,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:10:47,967 INFO L225 Difference]: With dead ends: 8032 [2022-07-21 11:10:47,968 INFO L226 Difference]: Without dead ends: 2743 [2022-07-21 11:10:48,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:10:48,014 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 24 mSDsluCounter, 2648 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3534 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:10:48,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 3534 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 11:10:48,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2743 states. [2022-07-21 11:10:48,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2743 to 2697. [2022-07-21 11:10:48,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2697 states, 2058 states have (on average 1.3644314868804666) internal successors, (2808), 2100 states have internal predecessors, (2808), 446 states have call successors, (446), 193 states have call predecessors, (446), 192 states have return successors, (485), 435 states have call predecessors, (485), 445 states have call successors, (485) [2022-07-21 11:10:48,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2697 states to 2697 states and 3739 transitions. [2022-07-21 11:10:48,071 INFO L78 Accepts]: Start accepts. Automaton has 2697 states and 3739 transitions. Word has length 151 [2022-07-21 11:10:48,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:10:48,071 INFO L495 AbstractCegarLoop]: Abstraction has 2697 states and 3739 transitions. [2022-07-21 11:10:48,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 11:10:48,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2697 states and 3739 transitions. [2022-07-21 11:10:48,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-21 11:10:48,076 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:10:48,076 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:10:48,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-21 11:10:48,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:10:48,289 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:10:48,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:10:48,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1883248949, now seen corresponding path program 1 times [2022-07-21 11:10:48,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:10:48,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440721704] [2022-07-21 11:10:48,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:48,290 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:10:48,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:10:48,291 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:10:48,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-21 11:10:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:48,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:10:48,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:10:48,764 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-07-21 11:10:48,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:10:48,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:10:48,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [440721704] [2022-07-21 11:10:48,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [440721704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:10:48,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:10:48,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 11:10:48,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657014661] [2022-07-21 11:10:48,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:10:48,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:10:48,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:10:48,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:10:48,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:10:48,766 INFO L87 Difference]: Start difference. First operand 2697 states and 3739 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 11:10:48,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:10:48,978 INFO L93 Difference]: Finished difference Result 6649 states and 9223 transitions. [2022-07-21 11:10:48,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:10:48,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 151 [2022-07-21 11:10:48,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:10:48,994 INFO L225 Difference]: With dead ends: 6649 [2022-07-21 11:10:48,994 INFO L226 Difference]: Without dead ends: 4002 [2022-07-21 11:10:49,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:10:49,002 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 686 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:10:49,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 1772 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 11:10:49,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4002 states. [2022-07-21 11:10:49,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4002 to 3985. [2022-07-21 11:10:49,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3985 states, 3080 states have (on average 1.3652597402597402) internal successors, (4205), 3134 states have internal predecessors, (4205), 610 states have call successors, (610), 295 states have call predecessors, (610), 294 states have return successors, (665), 597 states have call predecessors, (665), 609 states have call successors, (665) [2022-07-21 11:10:49,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3985 states to 3985 states and 5480 transitions. [2022-07-21 11:10:49,124 INFO L78 Accepts]: Start accepts. Automaton has 3985 states and 5480 transitions. Word has length 151 [2022-07-21 11:10:49,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:10:49,124 INFO L495 AbstractCegarLoop]: Abstraction has 3985 states and 5480 transitions. [2022-07-21 11:10:49,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 11:10:49,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3985 states and 5480 transitions. [2022-07-21 11:10:49,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 11:10:49,130 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:10:49,130 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:10:49,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-21 11:10:49,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:10:49,347 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:10:49,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:10:49,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1042738156, now seen corresponding path program 1 times [2022-07-21 11:10:49,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:10:49,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727512224] [2022-07-21 11:10:49,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:49,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:10:49,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:10:49,350 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:10:49,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-21 11:10:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:49,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:10:49,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:10:49,709 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-07-21 11:10:49,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:10:49,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:10:49,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727512224] [2022-07-21 11:10:49,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727512224] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:10:49,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:10:49,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 11:10:49,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085335838] [2022-07-21 11:10:49,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:10:49,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:10:49,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:10:49,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:10:49,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:10:49,710 INFO L87 Difference]: Start difference. First operand 3985 states and 5480 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 11:10:49,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:10:49,761 INFO L93 Difference]: Finished difference Result 5989 states and 8307 transitions. [2022-07-21 11:10:49,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:10:49,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 156 [2022-07-21 11:10:49,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:10:49,774 INFO L225 Difference]: With dead ends: 5989 [2022-07-21 11:10:49,774 INFO L226 Difference]: Without dead ends: 4005 [2022-07-21 11:10:49,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:10:49,780 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 5 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:10:49,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1760 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 11:10:49,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4005 states. [2022-07-21 11:10:49,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4005 to 4005. [2022-07-21 11:10:49,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4005 states, 3095 states have (on average 1.3634894991922455) internal successors, (4220), 3154 states have internal predecessors, (4220), 610 states have call successors, (610), 295 states have call predecessors, (610), 299 states have return successors, (670), 597 states have call predecessors, (670), 609 states have call successors, (670) [2022-07-21 11:10:49,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4005 states to 4005 states and 5500 transitions. [2022-07-21 11:10:49,876 INFO L78 Accepts]: Start accepts. Automaton has 4005 states and 5500 transitions. Word has length 156 [2022-07-21 11:10:49,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:10:49,876 INFO L495 AbstractCegarLoop]: Abstraction has 4005 states and 5500 transitions. [2022-07-21 11:10:49,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 11:10:49,877 INFO L276 IsEmpty]: Start isEmpty. Operand 4005 states and 5500 transitions. [2022-07-21 11:10:49,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-21 11:10:49,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:10:49,884 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:10:49,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-21 11:10:50,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:10:50,095 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:10:50,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:10:50,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1404375923, now seen corresponding path program 1 times [2022-07-21 11:10:50,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:10:50,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071467747] [2022-07-21 11:10:50,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:10:50,097 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:10:50,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:10:50,098 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:10:50,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-21 11:10:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:10:50,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 11:10:50,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:10:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-21 11:10:50,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:10:50,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:10:50,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071467747] [2022-07-21 11:10:50,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071467747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:10:50,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:10:50,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:10:50,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716106592] [2022-07-21 11:10:50,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:10:50,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:10:50,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:10:50,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:10:50,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:10:50,725 INFO L87 Difference]: Start difference. First operand 4005 states and 5500 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 5 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-21 11:10:54,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:10:56,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:10:58,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:00,664 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:02,676 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:05,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:11:05,103 INFO L93 Difference]: Finished difference Result 8583 states and 11834 transitions. [2022-07-21 11:11:05,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 11:11:05,104 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 5 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 158 [2022-07-21 11:11:05,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:11:05,126 INFO L225 Difference]: With dead ends: 8583 [2022-07-21 11:11:05,131 INFO L226 Difference]: Without dead ends: 4628 [2022-07-21 11:11:05,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-21 11:11:05,141 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 1322 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 406 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1432 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:11:05,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1432 Valid, 2849 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 1525 Invalid, 5 Unknown, 0 Unchecked, 14.1s Time] [2022-07-21 11:11:05,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4628 states. [2022-07-21 11:11:05,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4628 to 4413. [2022-07-21 11:11:05,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4413 states, 3378 states have (on average 1.3502072232089994) internal successors, (4561), 3451 states have internal predecessors, (4561), 683 states have call successors, (683), 334 states have call predecessors, (683), 351 states have return successors, (769), 673 states have call predecessors, (769), 682 states have call successors, (769) [2022-07-21 11:11:05,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4413 states to 4413 states and 6013 transitions. [2022-07-21 11:11:05,242 INFO L78 Accepts]: Start accepts. Automaton has 4413 states and 6013 transitions. Word has length 158 [2022-07-21 11:11:05,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:11:05,243 INFO L495 AbstractCegarLoop]: Abstraction has 4413 states and 6013 transitions. [2022-07-21 11:11:05,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 5 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-21 11:11:05,243 INFO L276 IsEmpty]: Start isEmpty. Operand 4413 states and 6013 transitions. [2022-07-21 11:11:05,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-21 11:11:05,250 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:11:05,250 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:11:05,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-21 11:11:05,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:11:05,465 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:11:05,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:11:05,465 INFO L85 PathProgramCache]: Analyzing trace with hash 484822487, now seen corresponding path program 1 times [2022-07-21 11:11:05,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:11:05,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516010958] [2022-07-21 11:11:05,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:11:05,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:11:05,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:11:05,467 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:11:05,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-21 11:11:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:05,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-21 11:11:05,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:11:06,172 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-21 11:11:06,173 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 69 treesize of output 41 [2022-07-21 11:11:06,225 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-07-21 11:11:06,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:11:06,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:11:06,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516010958] [2022-07-21 11:11:06,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516010958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:11:06,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:11:06,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 11:11:06,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755594640] [2022-07-21 11:11:06,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:11:06,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 11:11:06,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:11:06,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 11:11:06,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:11:06,226 INFO L87 Difference]: Start difference. First operand 4413 states and 6013 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 11:11:11,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:13,559 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:15,567 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:17,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:19,588 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:21,600 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:23,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:26,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:28,752 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:31,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:11:31,171 INFO L93 Difference]: Finished difference Result 8878 states and 12123 transitions. [2022-07-21 11:11:31,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 11:11:31,176 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 193 [2022-07-21 11:11:31,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:11:31,198 INFO L225 Difference]: With dead ends: 8878 [2022-07-21 11:11:31,199 INFO L226 Difference]: Without dead ends: 4515 [2022-07-21 11:11:31,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-07-21 11:11:31,211 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 128 mSDsluCounter, 5712 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 29 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 6586 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2022-07-21 11:11:31,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 6586 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 422 Invalid, 6 Unknown, 0 Unchecked, 24.5s Time] [2022-07-21 11:11:31,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4515 states. [2022-07-21 11:11:31,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4515 to 4443. [2022-07-21 11:11:31,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4443 states, 3408 states have (on average 1.3488849765258215) internal successors, (4597), 3481 states have internal predecessors, (4597), 683 states have call successors, (683), 334 states have call predecessors, (683), 351 states have return successors, (769), 673 states have call predecessors, (769), 682 states have call successors, (769) [2022-07-21 11:11:31,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4443 states to 4443 states and 6049 transitions. [2022-07-21 11:11:31,300 INFO L78 Accepts]: Start accepts. Automaton has 4443 states and 6049 transitions. Word has length 193 [2022-07-21 11:11:31,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:11:31,300 INFO L495 AbstractCegarLoop]: Abstraction has 4443 states and 6049 transitions. [2022-07-21 11:11:31,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 11:11:31,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4443 states and 6049 transitions. [2022-07-21 11:11:31,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-21 11:11:31,308 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:11:31,308 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:11:31,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-21 11:11:31,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:11:31,524 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:11:31,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:11:31,524 INFO L85 PathProgramCache]: Analyzing trace with hash -7803687, now seen corresponding path program 1 times [2022-07-21 11:11:31,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:11:31,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683607608] [2022-07-21 11:11:31,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:11:31,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:11:31,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:11:31,526 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:11:31,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-21 11:11:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:31,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 11:11:31,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:11:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-07-21 11:11:32,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:11:32,055 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:11:32,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683607608] [2022-07-21 11:11:32,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683607608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:11:32,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:11:32,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:11:32,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562203733] [2022-07-21 11:11:32,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:11:32,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:11:32,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:11:32,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:11:32,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:11:32,057 INFO L87 Difference]: Start difference. First operand 4443 states and 6049 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 11:11:32,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:11:32,179 INFO L93 Difference]: Finished difference Result 8886 states and 12152 transitions. [2022-07-21 11:11:32,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 11:11:32,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 193 [2022-07-21 11:11:32,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:11:32,201 INFO L225 Difference]: With dead ends: 8886 [2022-07-21 11:11:32,201 INFO L226 Difference]: Without dead ends: 4493 [2022-07-21 11:11:32,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:11:32,211 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 2 mSDsluCounter, 2631 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3514 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:11:32,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3514 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 11:11:32,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4493 states. [2022-07-21 11:11:32,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4493 to 4475. [2022-07-21 11:11:32,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4475 states, 3432 states have (on average 1.3464452214452214) internal successors, (4621), 3505 states have internal predecessors, (4621), 683 states have call successors, (683), 334 states have call predecessors, (683), 359 states have return successors, (785), 681 states have call predecessors, (785), 682 states have call successors, (785) [2022-07-21 11:11:32,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4475 states to 4475 states and 6089 transitions. [2022-07-21 11:11:32,331 INFO L78 Accepts]: Start accepts. Automaton has 4475 states and 6089 transitions. Word has length 193 [2022-07-21 11:11:32,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:11:32,332 INFO L495 AbstractCegarLoop]: Abstraction has 4475 states and 6089 transitions. [2022-07-21 11:11:32,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 11:11:32,332 INFO L276 IsEmpty]: Start isEmpty. Operand 4475 states and 6089 transitions. [2022-07-21 11:11:32,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-21 11:11:32,339 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:11:32,339 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:11:32,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-21 11:11:32,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:11:32,556 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:11:32,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:11:32,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1515483270, now seen corresponding path program 1 times [2022-07-21 11:11:32,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:11:32,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738014515] [2022-07-21 11:11:32,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:11:32,557 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:11:32,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:11:32,558 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:11:32,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-21 11:11:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:32,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 11:11:32,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:11:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-07-21 11:11:33,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:11:33,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:11:33,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738014515] [2022-07-21 11:11:33,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738014515] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:11:33,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:11:33,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 11:11:33,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420788745] [2022-07-21 11:11:33,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:11:33,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 11:11:33,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:11:33,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 11:11:33,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 11:11:33,013 INFO L87 Difference]: Start difference. First operand 4475 states and 6089 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:11:33,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:11:33,390 INFO L93 Difference]: Finished difference Result 10570 states and 14339 transitions. [2022-07-21 11:11:33,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 11:11:33,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 215 [2022-07-21 11:11:33,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:11:33,424 INFO L225 Difference]: With dead ends: 10570 [2022-07-21 11:11:33,425 INFO L226 Difference]: Without dead ends: 6145 [2022-07-21 11:11:33,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:11:33,434 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 934 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 3651 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:11:33,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 3651 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 11:11:33,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6145 states. [2022-07-21 11:11:33,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6145 to 4483. [2022-07-21 11:11:33,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4483 states, 3440 states have (on average 1.345639534883721) internal successors, (4629), 3513 states have internal predecessors, (4629), 683 states have call successors, (683), 334 states have call predecessors, (683), 359 states have return successors, (785), 681 states have call predecessors, (785), 682 states have call successors, (785) [2022-07-21 11:11:33,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4483 states to 4483 states and 6097 transitions. [2022-07-21 11:11:33,576 INFO L78 Accepts]: Start accepts. Automaton has 4483 states and 6097 transitions. Word has length 215 [2022-07-21 11:11:33,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:11:33,576 INFO L495 AbstractCegarLoop]: Abstraction has 4483 states and 6097 transitions. [2022-07-21 11:11:33,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:11:33,576 INFO L276 IsEmpty]: Start isEmpty. Operand 4483 states and 6097 transitions. [2022-07-21 11:11:33,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-21 11:11:33,583 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:11:33,583 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:11:33,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-21 11:11:33,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:11:33,800 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:11:33,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:11:33,801 INFO L85 PathProgramCache]: Analyzing trace with hash -592633712, now seen corresponding path program 1 times [2022-07-21 11:11:33,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:11:33,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646797720] [2022-07-21 11:11:33,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:11:33,802 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:11:33,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:11:33,803 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:11:33,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-21 11:11:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:34,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-21 11:11:34,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:11:34,659 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-07-21 11:11:34,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:11:34,660 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:11:34,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646797720] [2022-07-21 11:11:34,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646797720] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:11:34,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:11:34,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 11:11:34,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146389639] [2022-07-21 11:11:34,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:11:34,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 11:11:34,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:11:34,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 11:11:34,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 11:11:34,662 INFO L87 Difference]: Start difference. First operand 4483 states and 6097 transitions. Second operand has 12 states, 12 states have (on average 9.75) internal successors, (117), 9 states have internal predecessors, (117), 3 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (23), 6 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-21 11:11:35,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:11:35,230 INFO L93 Difference]: Finished difference Result 10681 states and 14957 transitions. [2022-07-21 11:11:35,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 11:11:35,231 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.75) internal successors, (117), 9 states have internal predecessors, (117), 3 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (23), 6 states have call predecessors, (23), 3 states have call successors, (23) Word has length 200 [2022-07-21 11:11:35,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:11:35,247 INFO L225 Difference]: With dead ends: 10681 [2022-07-21 11:11:35,247 INFO L226 Difference]: Without dead ends: 6248 [2022-07-21 11:11:35,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-07-21 11:11:35,257 INFO L413 NwaCegarLoop]: 1378 mSDtfsCounter, 362 mSDsluCounter, 13282 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 14660 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:11:35,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 14660 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 11:11:35,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6248 states. [2022-07-21 11:11:35,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6248 to 4525. [2022-07-21 11:11:35,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4525 states, 3470 states have (on average 1.3403458213256485) internal successors, (4651), 3543 states have internal predecessors, (4651), 683 states have call successors, (683), 334 states have call predecessors, (683), 371 states have return successors, (801), 693 states have call predecessors, (801), 682 states have call successors, (801) [2022-07-21 11:11:35,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4525 states to 4525 states and 6135 transitions. [2022-07-21 11:11:35,492 INFO L78 Accepts]: Start accepts. Automaton has 4525 states and 6135 transitions. Word has length 200 [2022-07-21 11:11:35,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:11:35,494 INFO L495 AbstractCegarLoop]: Abstraction has 4525 states and 6135 transitions. [2022-07-21 11:11:35,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.75) internal successors, (117), 9 states have internal predecessors, (117), 3 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (23), 6 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-21 11:11:35,495 INFO L276 IsEmpty]: Start isEmpty. Operand 4525 states and 6135 transitions. [2022-07-21 11:11:35,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-21 11:11:35,502 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:11:35,502 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:11:35,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-21 11:11:35,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:11:35,718 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:11:35,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:11:35,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1833099563, now seen corresponding path program 1 times [2022-07-21 11:11:35,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:11:35,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966618456] [2022-07-21 11:11:35,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:11:35,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:11:35,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:11:35,722 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:11:35,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-21 11:11:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:36,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 11:11:36,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:11:36,272 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-07-21 11:11:36,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:11:36,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:11:36,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966618456] [2022-07-21 11:11:36,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966618456] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:11:36,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:11:36,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:11:36,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422993171] [2022-07-21 11:11:36,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:11:36,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:11:36,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:11:36,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:11:36,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:11:36,276 INFO L87 Difference]: Start difference. First operand 4525 states and 6135 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 11:11:36,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:11:36,820 INFO L93 Difference]: Finished difference Result 10696 states and 14455 transitions. [2022-07-21 11:11:36,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:11:36,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 226 [2022-07-21 11:11:36,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:11:36,836 INFO L225 Difference]: With dead ends: 10696 [2022-07-21 11:11:36,836 INFO L226 Difference]: Without dead ends: 6221 [2022-07-21 11:11:36,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:11:36,845 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 1212 mSDsluCounter, 3340 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 4850 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:11:36,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 4850 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 11:11:36,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6221 states. [2022-07-21 11:11:36,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6221 to 4529. [2022-07-21 11:11:36,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4529 states, 3474 states have (on average 1.3399539435808865) internal successors, (4655), 3543 states have internal predecessors, (4655), 683 states have call successors, (683), 334 states have call predecessors, (683), 371 states have return successors, (801), 693 states have call predecessors, (801), 682 states have call successors, (801) [2022-07-21 11:11:36,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4529 states to 4529 states and 6139 transitions. [2022-07-21 11:11:36,972 INFO L78 Accepts]: Start accepts. Automaton has 4529 states and 6139 transitions. Word has length 226 [2022-07-21 11:11:36,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:11:36,974 INFO L495 AbstractCegarLoop]: Abstraction has 4529 states and 6139 transitions. [2022-07-21 11:11:36,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 11:11:36,975 INFO L276 IsEmpty]: Start isEmpty. Operand 4529 states and 6139 transitions. [2022-07-21 11:11:36,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-07-21 11:11:36,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:11:36,982 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:11:37,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-21 11:11:37,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:11:37,196 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:11:37,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:11:37,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1966699871, now seen corresponding path program 1 times [2022-07-21 11:11:37,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:11:37,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650785360] [2022-07-21 11:11:37,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:11:37,197 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:11:37,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:11:37,198 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:11:37,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-21 11:11:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:11:37,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-21 11:11:37,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:11:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 98 proven. 8 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2022-07-21 11:11:38,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:11:39,288 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-07-21 11:11:39,289 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:11:39,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650785360] [2022-07-21 11:11:39,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650785360] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 11:11:39,289 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 11:11:39,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2022-07-21 11:11:39,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807007843] [2022-07-21 11:11:39,289 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 11:11:39,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 11:11:39,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:11:39,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 11:11:39,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-07-21 11:11:39,290 INFO L87 Difference]: Start difference. First operand 4529 states and 6139 transitions. Second operand has 15 states, 15 states have (on average 15.466666666666667) internal successors, (232), 15 states have internal predecessors, (232), 9 states have call successors, (46), 7 states have call predecessors, (46), 10 states have return successors, (45), 12 states have call predecessors, (45), 9 states have call successors, (45) [2022-07-21 11:11:43,691 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:45,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:47,713 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:50,451 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:52,467 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:54,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:56,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:11:58,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:06,778 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:08,787 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:10,800 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:12,814 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:14,850 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:16,863 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:18,875 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:21,908 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:23,927 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:25,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:27,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:29,960 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:31,967 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:12:34,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:12:34,992 INFO L93 Difference]: Finished difference Result 13740 states and 19055 transitions. [2022-07-21 11:12:34,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 11:12:34,993 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 15.466666666666667) internal successors, (232), 15 states have internal predecessors, (232), 9 states have call successors, (46), 7 states have call predecessors, (46), 10 states have return successors, (45), 12 states have call predecessors, (45), 9 states have call successors, (45) Word has length 233 [2022-07-21 11:12:34,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:12:35,020 INFO L225 Difference]: With dead ends: 13740 [2022-07-21 11:12:35,020 INFO L226 Difference]: Without dead ends: 11260 [2022-07-21 11:12:35,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2022-07-21 11:12:35,029 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 7074 mSDsluCounter, 5200 mSDsCounter, 0 mSdLazyCounter, 4842 mSolverCounterSat, 2421 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7279 SdHoareTripleChecker+Valid, 6713 SdHoareTripleChecker+Invalid, 7284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2421 IncrementalHoareTripleChecker+Valid, 4842 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.8s IncrementalHoareTripleChecker+Time [2022-07-21 11:12:35,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7279 Valid, 6713 Invalid, 7284 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2421 Valid, 4842 Invalid, 21 Unknown, 0 Unchecked, 54.8s Time] [2022-07-21 11:12:35,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11260 states. [2022-07-21 11:12:35,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11260 to 11074. [2022-07-21 11:12:35,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11074 states, 8498 states have (on average 1.346199105671923) internal successors, (11440), 8682 states have internal predecessors, (11440), 1673 states have call successors, (1673), 797 states have call predecessors, (1673), 902 states have return successors, (2048), 1701 states have call predecessors, (2048), 1672 states have call successors, (2048) [2022-07-21 11:12:35,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11074 states to 11074 states and 15161 transitions. [2022-07-21 11:12:35,462 INFO L78 Accepts]: Start accepts. Automaton has 11074 states and 15161 transitions. Word has length 233 [2022-07-21 11:12:35,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:12:35,463 INFO L495 AbstractCegarLoop]: Abstraction has 11074 states and 15161 transitions. [2022-07-21 11:12:35,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.466666666666667) internal successors, (232), 15 states have internal predecessors, (232), 9 states have call successors, (46), 7 states have call predecessors, (46), 10 states have return successors, (45), 12 states have call predecessors, (45), 9 states have call successors, (45) [2022-07-21 11:12:35,463 INFO L276 IsEmpty]: Start isEmpty. Operand 11074 states and 15161 transitions. [2022-07-21 11:12:35,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-07-21 11:12:35,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:12:35,482 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:12:35,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-07-21 11:12:35,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:12:35,703 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:12:35,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:12:35,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1802197632, now seen corresponding path program 1 times [2022-07-21 11:12:35,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:12:35,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579086815] [2022-07-21 11:12:35,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:12:35,705 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:12:35,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:12:35,706 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:12:35,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-21 11:12:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:36,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 11:12:36,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:12:36,368 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-07-21 11:12:36,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:12:36,368 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:12:36,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579086815] [2022-07-21 11:12:36,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579086815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:12:36,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:12:36,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 11:12:36,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574425600] [2022-07-21 11:12:36,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:12:36,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 11:12:36,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:12:36,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 11:12:36,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 11:12:36,375 INFO L87 Difference]: Start difference. First operand 11074 states and 15161 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-21 11:12:36,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:12:36,733 INFO L93 Difference]: Finished difference Result 20193 states and 27862 transitions. [2022-07-21 11:12:36,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 11:12:36,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 235 [2022-07-21 11:12:36,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:12:36,760 INFO L225 Difference]: With dead ends: 20193 [2022-07-21 11:12:36,760 INFO L226 Difference]: Without dead ends: 11164 [2022-07-21 11:12:36,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:12:36,774 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 10 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:12:36,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2636 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 11:12:36,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11164 states. [2022-07-21 11:12:37,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11164 to 11104. [2022-07-21 11:12:37,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11104 states, 8528 states have (on average 1.3461538461538463) internal successors, (11480), 8712 states have internal predecessors, (11480), 1673 states have call successors, (1673), 797 states have call predecessors, (1673), 902 states have return successors, (2048), 1701 states have call predecessors, (2048), 1672 states have call successors, (2048) [2022-07-21 11:12:37,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11104 states to 11104 states and 15201 transitions. [2022-07-21 11:12:37,108 INFO L78 Accepts]: Start accepts. Automaton has 11104 states and 15201 transitions. Word has length 235 [2022-07-21 11:12:37,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:12:37,109 INFO L495 AbstractCegarLoop]: Abstraction has 11104 states and 15201 transitions. [2022-07-21 11:12:37,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-21 11:12:37,109 INFO L276 IsEmpty]: Start isEmpty. Operand 11104 states and 15201 transitions. [2022-07-21 11:12:37,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-21 11:12:37,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:12:37,115 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:12:37,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-21 11:12:37,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:12:37,332 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:12:37,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:12:37,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1056928775, now seen corresponding path program 1 times [2022-07-21 11:12:37,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:12:37,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499355742] [2022-07-21 11:12:37,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:12:37,333 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:12:37,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:12:37,334 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:12:37,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-21 11:12:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:12:37,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-21 11:12:37,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:12:38,855 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-07-21 11:12:38,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:12:38,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:12:38,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499355742] [2022-07-21 11:12:38,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499355742] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:12:38,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:12:38,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-21 11:12:38,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759166432] [2022-07-21 11:12:38,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:12:38,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 11:12:38,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:12:38,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 11:12:38,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-07-21 11:12:38,857 INFO L87 Difference]: Start difference. First operand 11104 states and 15201 transitions. Second operand has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 11 states have internal predecessors, (143), 4 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (28), 8 states have call predecessors, (28), 4 states have call successors, (28) [2022-07-21 11:12:41,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:12:41,361 INFO L93 Difference]: Finished difference Result 26321 states and 37083 transitions. [2022-07-21 11:12:41,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 11:12:41,368 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 11 states have internal predecessors, (143), 4 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (28), 8 states have call predecessors, (28), 4 states have call successors, (28) Word has length 237 [2022-07-21 11:12:41,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:12:41,404 INFO L225 Difference]: With dead ends: 26321 [2022-07-21 11:12:41,404 INFO L226 Difference]: Without dead ends: 15267 [2022-07-21 11:12:41,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-07-21 11:12:41,422 INFO L413 NwaCegarLoop]: 1358 mSDtfsCounter, 695 mSDsluCounter, 16733 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 18091 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 11:12:41,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 18091 Invalid, 440 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [136 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 11:12:41,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15267 states. [2022-07-21 11:12:41,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15267 to 11169. [2022-07-21 11:12:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11169 states, 8576 states have (on average 1.3442164179104477) internal successors, (11528), 8761 states have internal predecessors, (11528), 1688 states have call successors, (1688), 797 states have call predecessors, (1688), 904 states have return successors, (2066), 1717 states have call predecessors, (2066), 1687 states have call successors, (2066) [2022-07-21 11:12:41,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11169 states to 11169 states and 15282 transitions. [2022-07-21 11:12:41,838 INFO L78 Accepts]: Start accepts. Automaton has 11169 states and 15282 transitions. Word has length 237 [2022-07-21 11:12:41,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:12:41,839 INFO L495 AbstractCegarLoop]: Abstraction has 11169 states and 15282 transitions. [2022-07-21 11:12:41,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 11 states have internal predecessors, (143), 4 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (28), 8 states have call predecessors, (28), 4 states have call successors, (28) [2022-07-21 11:12:41,839 INFO L276 IsEmpty]: Start isEmpty. Operand 11169 states and 15282 transitions. [2022-07-21 11:12:41,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-21 11:12:41,850 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:12:41,850 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:12:41,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-21 11:12:42,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:12:42,070 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:12:42,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:12:42,071 INFO L85 PathProgramCache]: Analyzing trace with hash 782169161, now seen corresponding path program 1 times [2022-07-21 11:12:42,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:12:42,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848850568] [2022-07-21 11:12:42,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:12:42,072 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:12:42,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:12:42,073 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:12:42,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-21 11:12:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 11:12:44,486 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 11:12:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 11:12:46,465 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-21 11:12:46,466 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 11:12:46,466 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 11:12:46,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-21 11:12:46,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:12:46,696 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:12:46,698 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 11:12:46,744 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-21 11:12:46,745 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-21 11:12:46,745 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-21 11:12:46,745 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-21 11:12:46,745 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-21 11:12:46,745 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-21 11:12:46,746 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-21 11:12:46,746 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-21 11:12:46,746 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-21 11:12:46,746 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-21 11:12:46,749 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == dest.base && #res.offset == dest.offset; is not ensure(true) [2022-07-21 11:12:46,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:12:46 BoogieIcfgContainer [2022-07-21 11:12:46,876 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 11:12:46,877 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 11:12:46,877 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 11:12:46,877 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 11:12:46,877 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:10:43" (3/4) ... [2022-07-21 11:12:46,880 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 11:12:46,880 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 11:12:46,880 INFO L158 Benchmark]: Toolchain (without parser) took 131805.35ms. Allocated memory was 62.9MB in the beginning and 388.0MB in the end (delta: 325.1MB). Free memory was 32.4MB in the beginning and 130.7MB in the end (delta: -98.3MB). Peak memory consumption was 224.2MB. Max. memory is 16.1GB. [2022-07-21 11:12:46,880 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory was 44.9MB in the beginning and 44.9MB in the end (delta: 51.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 11:12:46,881 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1453.67ms. Allocated memory was 62.9MB in the beginning and 100.7MB in the end (delta: 37.7MB). Free memory was 32.3MB in the beginning and 36.6MB in the end (delta: -4.3MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. [2022-07-21 11:12:46,881 INFO L158 Benchmark]: Boogie Procedure Inliner took 130.90ms. Allocated memory is still 100.7MB. Free memory was 36.6MB in the beginning and 48.5MB in the end (delta: -11.9MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2022-07-21 11:12:46,881 INFO L158 Benchmark]: Boogie Preprocessor took 130.32ms. Allocated memory is still 100.7MB. Free memory was 48.5MB in the beginning and 37.2MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-21 11:12:46,885 INFO L158 Benchmark]: RCFGBuilder took 6529.31ms. Allocated memory was 100.7MB in the beginning and 138.4MB in the end (delta: 37.7MB). Free memory was 37.2MB in the beginning and 54.4MB in the end (delta: -17.3MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. [2022-07-21 11:12:46,885 INFO L158 Benchmark]: TraceAbstraction took 123550.87ms. Allocated memory was 138.4MB in the beginning and 388.0MB in the end (delta: 249.6MB). Free memory was 53.2MB in the beginning and 130.7MB in the end (delta: -77.5MB). Peak memory consumption was 168.7MB. Max. memory is 16.1GB. [2022-07-21 11:12:46,886 INFO L158 Benchmark]: Witness Printer took 3.32ms. Allocated memory is still 388.0MB. Free memory is still 130.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 11:12:46,891 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory was 44.9MB in the beginning and 44.9MB in the end (delta: 51.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1453.67ms. Allocated memory was 62.9MB in the beginning and 100.7MB in the end (delta: 37.7MB). Free memory was 32.3MB in the beginning and 36.6MB in the end (delta: -4.3MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 130.90ms. Allocated memory is still 100.7MB. Free memory was 36.6MB in the beginning and 48.5MB in the end (delta: -11.9MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 130.32ms. Allocated memory is still 100.7MB. Free memory was 48.5MB in the beginning and 37.2MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 6529.31ms. Allocated memory was 100.7MB in the beginning and 138.4MB in the end (delta: 37.7MB). Free memory was 37.2MB in the beginning and 54.4MB in the end (delta: -17.3MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. * TraceAbstraction took 123550.87ms. Allocated memory was 138.4MB in the beginning and 388.0MB in the end (delta: 249.6MB). Free memory was 53.2MB in the beginning and 130.7MB in the end (delta: -77.5MB). Peak memory consumption was 168.7MB. Max. memory is 16.1GB. * Witness Printer took 3.32ms. Allocated memory is still 388.0MB. Free memory is still 130.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == dest.base && #res.offset == dest.offset; is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 5666]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 5775. Possible FailurePath: [L5689] int LDV_IN_INTERRUPT = 1; [L5690] int ldv_state_variable_2 ; [L5691] struct ppp_channel *sync_ops_group0 ; [L5692] int ref_cnt ; [L5693] int ldv_state_variable_1 ; [L5694] int ldv_state_variable_0 ; [L5695] struct tty_struct *ppp_sync_ldisc_group1 ; [L5751] static struct ppp_channel_ops const sync_ops = {& ppp_sync_send, & ppp_sync_ioctl}; [L5775-L5776] static rwlock_t disc_data_lock = {{{0}, {{0U}}}, 3736018669U, 4294967295U, (void *)-1, {0, {0, 0}, "disc_data_lock", 0, 0UL}}; [L6096-L6099] static struct tty_ldisc_ops ppp_sync_ldisc = {21507, (char *)"pppsync", 0, 0, & ppp_sync_open, & ppp_sync_close, 0, 0, & ppp_sync_read, & ppp_sync_write, & ppp_synctty_ioctl, 0, 0, & ppp_sync_poll, & ppp_sync_hangup, & ppp_sync_receive, & ppp_sync_wakeup, 0, 0, 0, & __this_module, 0}; [L6637] int ldv_retval_0 ; [L6638] int ldv_retval_1 ; [L7012] Element set_impl[15] ; [L7013] int last_index = 0; [L7147] Set LDV_SKBS ; VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6661] size_t ldvarg11 ; [L6662] size_t tmp ; [L6663] struct file *ldvarg7 ; [L6664] void *tmp___0 ; [L6665] int ldvarg3 ; [L6666] int tmp___1 ; [L6667] unsigned long ldvarg0 ; [L6668] unsigned long tmp___2 ; [L6669] unsigned char *ldvarg12 ; [L6670] void *tmp___3 ; [L6671] unsigned char *ldvarg5 ; [L6672] void *tmp___4 ; [L6673] struct poll_table_struct *ldvarg6 ; [L6674] void *tmp___5 ; [L6675] size_t ldvarg8 ; [L6676] size_t tmp___6 ; [L6677] unsigned int ldvarg1 ; [L6678] unsigned int tmp___7 ; [L6679] char *ldvarg4 ; [L6680] void *tmp___8 ; [L6681] struct file *ldvarg13 ; [L6682] void *tmp___9 ; [L6683] struct file *ldvarg10 ; [L6684] void *tmp___10 ; [L6685] unsigned char *ldvarg9 ; [L6686] void *tmp___11 ; [L6687] struct file *ldvarg2 ; [L6688] void *tmp___12 ; [L6689] unsigned long ldvarg14 ; [L6690] unsigned long tmp___13 ; [L6691] struct sk_buff *ldvarg16 ; [L6692] void *tmp___14 ; [L6693] unsigned int ldvarg15 ; [L6694] unsigned int tmp___15 ; [L6695] int tmp___16 ; [L6696] int tmp___17 ; [L6697] int tmp___18 ; [L6698] int tmp___19 ; [L6700] tmp = __VERIFIER_nondet_size_t() [L6701] ldvarg11 = tmp VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg11=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0] [L6702] CALL, EXPR ldv_zalloc(512UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=512, \result={0:0}, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=512, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=2147483648] [L6702] RET, EXPR ldv_zalloc(512UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_zalloc(512UL)={0:0}, ldvarg11=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0] [L6702] tmp___0 = ldv_zalloc(512UL) [L6703] ldvarg7 = (struct file *)tmp___0 [L6704] tmp___1 = __VERIFIER_nondet_int() [L6705] ldvarg3 = tmp___1 [L6706] tmp___2 = __VERIFIER_nondet_ulong() [L6707] ldvarg0 = tmp___2 VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=27, ldvarg11=0, ldvarg3=29, ldvarg7={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___2=27] [L6708] CALL, EXPR ldv_zalloc(1UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=1, \result={0:0}, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=1, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=2147483648] [L6708] RET, EXPR ldv_zalloc(1UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_zalloc(1UL)={0:0}, ldvarg0=27, ldvarg11=0, ldvarg3=29, ldvarg7={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___2=27] [L6708] tmp___3 = ldv_zalloc(1UL) [L6709] ldvarg12 = (unsigned char *)tmp___3 VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=27, ldvarg11=0, ldvarg12={0:0}, ldvarg3=29, ldvarg7={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___2=27, tmp___3={0:0}] [L6710] CALL, EXPR ldv_zalloc(1UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=1, \result={0:0}, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=1, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=2147483648] [L6710] RET, EXPR ldv_zalloc(1UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_zalloc(1UL)={0:0}, ldvarg0=27, ldvarg11=0, ldvarg12={0:0}, ldvarg3=29, ldvarg7={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___2=27, tmp___3={0:0}] [L6710] tmp___4 = ldv_zalloc(1UL) [L6711] ldvarg5 = (unsigned char *)tmp___4 VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=27, ldvarg11=0, ldvarg12={0:0}, ldvarg3=29, ldvarg5={0:0}, ldvarg7={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}] [L6712] CALL, EXPR ldv_zalloc(16UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=16, \result={0:0}, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=16, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=2147483648] [L6712] RET, EXPR ldv_zalloc(16UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_zalloc(16UL)={0:0}, ldvarg0=27, ldvarg11=0, ldvarg12={0:0}, ldvarg3=29, ldvarg5={0:0}, ldvarg7={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}] [L6712] tmp___5 = ldv_zalloc(16UL) [L6713] ldvarg6 = (struct poll_table_struct *)tmp___5 [L6714] tmp___6 = __VERIFIER_nondet_size_t() [L6715] ldvarg8 = tmp___6 [L6716] tmp___7 = __VERIFIER_nondet_uint() [L6717] ldvarg1 = tmp___7 VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=27, ldvarg1=27, ldvarg11=0, ldvarg12={0:0}, ldvarg3=29, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=27] [L6718] CALL, EXPR ldv_zalloc(1UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=1, \result={0:0}, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=1, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=2147483648] [L6718] RET, EXPR ldv_zalloc(1UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_zalloc(1UL)={0:0}, ldvarg0=27, ldvarg1=27, ldvarg11=0, ldvarg12={0:0}, ldvarg3=29, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=27] [L6718] tmp___8 = ldv_zalloc(1UL) [L6719] ldvarg4 = (char *)tmp___8 VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=27, ldvarg1=27, ldvarg11=0, ldvarg12={0:0}, ldvarg3=29, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=27, tmp___8={0:0}] [L6720] CALL, EXPR ldv_zalloc(512UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=512, \result={0:0}, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=512, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=2147483648] [L6720] RET, EXPR ldv_zalloc(512UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_zalloc(512UL)={0:0}, ldvarg0=27, ldvarg1=27, ldvarg11=0, ldvarg12={0:0}, ldvarg3=29, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=27, tmp___8={0:0}] [L6720] tmp___9 = ldv_zalloc(512UL) [L6721] ldvarg13 = (struct file *)tmp___9 VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=27, ldvarg1=27, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg3=29, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=27, tmp___8={0:0}, tmp___9={0:0}] [L6722] CALL, EXPR ldv_zalloc(512UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=512, \result={0:0}, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=512, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=2147483648] [L6722] RET, EXPR ldv_zalloc(512UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_zalloc(512UL)={0:0}, ldvarg0=27, ldvarg1=27, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg3=29, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=27, tmp___8={0:0}, tmp___9={0:0}] [L6722] tmp___10 = ldv_zalloc(512UL) [L6723] ldvarg10 = (struct file *)tmp___10 VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=27, ldvarg1=27, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg3=29, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___10={0:0}, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=27, tmp___8={0:0}, tmp___9={0:0}] [L6724] CALL, EXPR ldv_zalloc(1UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=1, \result={0:0}, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=1, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=2147483648] [L6724] RET, EXPR ldv_zalloc(1UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_zalloc(1UL)={0:0}, ldvarg0=27, ldvarg1=27, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg3=29, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___10={0:0}, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=27, tmp___8={0:0}, tmp___9={0:0}] [L6724] tmp___11 = ldv_zalloc(1UL) [L6725] ldvarg9 = (unsigned char *)tmp___11 VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=27, ldvarg1=27, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg3=29, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___10={0:0}, tmp___11={0:0}, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=27, tmp___8={0:0}, tmp___9={0:0}] [L6726] CALL, EXPR ldv_zalloc(512UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=512, \result={0:0}, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=512, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=2147483648] [L6726] RET, EXPR ldv_zalloc(512UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_zalloc(512UL)={0:0}, ldvarg0=27, ldvarg1=27, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg3=29, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___10={0:0}, tmp___11={0:0}, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=27, tmp___8={0:0}, tmp___9={0:0}] [L6726] tmp___12 = ldv_zalloc(512UL) [L6727] ldvarg2 = (struct file *)tmp___12 [L6728] tmp___13 = __VERIFIER_nondet_ulong() [L6729] ldvarg14 = tmp___13 VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=27, ldvarg1=27, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=26, ldvarg2={0:0}, ldvarg3=29, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=26, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=27, tmp___8={0:0}, tmp___9={0:0}] [L6730] CALL, EXPR ldv_zalloc(232UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=232, \result={0:0}, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=232, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=2147483648] [L6730] RET, EXPR ldv_zalloc(232UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_zalloc(232UL)={0:0}, ldvarg0=27, ldvarg1=27, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=26, ldvarg2={0:0}, ldvarg3=29, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=26, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=27, tmp___8={0:0}, tmp___9={0:0}] [L6730] tmp___14 = ldv_zalloc(232UL) [L6731] ldvarg16 = (struct sk_buff *)tmp___14 [L6732] tmp___15 = __VERIFIER_nondet_uint() [L6733] ldvarg15 = tmp___15 [L6734] CALL ldv_initialize() [L7166] CALL ldv_set_init(LDV_SKBS) [L7018] set = set_impl [L7019] last_index = 0 VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={24:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7166] RET ldv_set_init(LDV_SKBS) [L6734] RET ldv_initialize() [L6735] ldv_state_variable_1 = 0 [L6736] ref_cnt = 0 [L6737] ldv_state_variable_0 = 1 [L6738] ldv_state_variable_2 = 0 VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=27, ldvarg1=27, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=26, ldvarg15=28, ldvarg16={0:0}, ldvarg2={0:0}, ldvarg3=29, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=26, tmp___14={0:0}, tmp___15=28, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=27, tmp___8={0:0}, tmp___9={0:0}] [L6740] tmp___16 = __VERIFIER_nondet_int() [L6742] case 0: [L6838] case 1: VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=27, ldvarg1=27, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=26, ldvarg15=28, ldvarg16={0:0}, ldvarg2={0:0}, ldvarg3=29, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=26, tmp___14={0:0}, tmp___15=28, tmp___16=1, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=27, tmp___8={0:0}, tmp___9={0:0}] [L6839] COND TRUE ldv_state_variable_0 != 0 [L6840] tmp___18 = __VERIFIER_nondet_int() [L6842] case 0: [L6850] case 1: VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldvarg0=27, ldvarg1=27, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=26, ldvarg15=28, ldvarg16={0:0}, ldvarg2={0:0}, ldvarg3=29, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=26, tmp___14={0:0}, tmp___15=28, tmp___16=1, tmp___18=1, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=27, tmp___8={0:0}, tmp___9={0:0}] [L6851] COND TRUE ldv_state_variable_0 == 1 [L6852] CALL, EXPR ppp_sync_init() [L6102] int err ; [L6104] CALL, EXPR tty_register_ldisc(14, & ppp_sync_ldisc) [L7358] return __VERIFIER_nondet_int(); [L6104] RET, EXPR tty_register_ldisc(14, & ppp_sync_ldisc) [L6104] err = tty_register_ldisc(14, & ppp_sync_ldisc) [L6105] COND FALSE !(err != 0) VAL [__this_module={0:0}, disc_data_lock={22:0}, err=0, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6109] return (err); VAL [\result=0, __this_module={0:0}, disc_data_lock={22:0}, err=0, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6852] RET, EXPR ppp_sync_init() [L6852] ldv_retval_1 = ppp_sync_init() [L6853] COND TRUE ldv_retval_1 == 0 [L6854] ldv_state_variable_0 = 3 [L6855] ldv_state_variable_2 = 1 [L6856] CALL ldv_initialize_ppp_channel_ops_2() [L6643] void *tmp ; VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=0, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6645] CALL, EXPR ldv_zalloc(40UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=0, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=40, \result={0:0}, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=0, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=40, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=2147483648] [L6645] RET, EXPR ldv_zalloc(40UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=0, ldv_state_variable_2=1, ldv_zalloc(40UL)={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6645] tmp = ldv_zalloc(40UL) [L6646] sync_ops_group0 = (struct ppp_channel *)tmp VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=0, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp={0:0}] [L6856] RET ldv_initialize_ppp_channel_ops_2() [L6857] ldv_state_variable_1 = 1 [L6858] CALL ldv_target_type_1() [L6652] void *tmp ; VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6654] CALL, EXPR ldv_zalloc(1752UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND TRUE tmp___0 != 0 [L5637] return ((void *)0); VAL [\old(size)=1752, \result={0:0}, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=1752, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=2147483648] [L6654] RET, EXPR ldv_zalloc(1752UL) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_zalloc(1752UL)={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6654] tmp = ldv_zalloc(1752UL) [L6655] ppp_sync_ldisc_group1 = (struct tty_struct *)tmp VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp={0:0}] [L6858] RET ldv_target_type_1() [L6861] COND FALSE !(ldv_retval_1 != 0) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldvarg0=27, ldvarg1=27, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=26, ldvarg15=28, ldvarg16={0:0}, ldvarg2={0:0}, ldvarg3=29, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=26, tmp___14={0:0}, tmp___15=28, tmp___16=1, tmp___18=1, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=27, tmp___8={0:0}, tmp___9={0:0}] [L6740] tmp___16 = __VERIFIER_nondet_int() [L6742] case 0: [L6838] case 1: [L6876] case 2: VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldvarg0=27, ldvarg1=27, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=26, ldvarg15=28, ldvarg16={0:0}, ldvarg2={0:0}, ldvarg3=29, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=26, tmp___14={0:0}, tmp___15=28, tmp___16=2, tmp___18=1, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=27, tmp___8={0:0}, tmp___9={0:0}] [L6877] COND TRUE ldv_state_variable_2 != 0 [L6878] tmp___19 = __VERIFIER_nondet_int() [L6880] case 0: VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldvarg0=27, ldvarg1=27, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=26, ldvarg15=28, ldvarg16={0:0}, ldvarg2={0:0}, ldvarg3=29, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=26, tmp___14={0:0}, tmp___15=28, tmp___16=2, tmp___18=1, tmp___19=0, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=27, tmp___8={0:0}, tmp___9={0:0}] [L6881] COND TRUE ldv_state_variable_2 == 1 [L6882] CALL ppp_sync_send(sync_ops_group0, ldvarg16) [L6439] struct syncppp *ap ; [L6440] int tmp ; [L6442] EXPR chan->private [L6442] ap = (struct syncppp *)chan->private [L6443] CALL ppp_sync_push(ap) VAL [\old(last_index)=0, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6461] int sent ; [L6462] int done ; [L6463] struct tty_struct *tty ; [L6464] int tty_stuffed ; [L6465] int tmp ; [L6466] int tmp___0 ; [L6467] int tmp___1 ; [L6468] int tmp___2 ; [L6470] done = 0 [L6471] EXPR ap->tty [L6471] tty = ap->tty [L6472] tty_stuffed = 0 VAL [\old(last_index)=0, __this_module={0:0}, ap={0:0}, ap={0:0}, disc_data_lock={22:0}, done=0, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tty={0:0}, tty_stuffed=0] [L6473] CALL, EXPR spin_trylock_bh(& ap->xmit_lock) VAL [\old(last_index)=0, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5417] int tmp ; [L5419] CALL, EXPR _raw_spin_trylock_bh(& lock->ldv_6338.rlock) [L7268] return __VERIFIER_nondet_int(); [L5419] RET, EXPR _raw_spin_trylock_bh(& lock->ldv_6338.rlock) [L5419] tmp = _raw_spin_trylock_bh(& lock->ldv_6338.rlock) [L5420] return (tmp); VAL [\old(last_index)=0, \result=0, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, lock={0:20}, lock={0:20}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0] [L6473] RET, EXPR spin_trylock_bh(& ap->xmit_lock) VAL [\old(last_index)=0, __this_module={0:0}, ap={0:0}, ap={0:0}, disc_data_lock={22:0}, done=0, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, spin_trylock_bh(& ap->xmit_lock)=0, sync_ops={21:0}, sync_ops_group0={0:0}, tty={0:0}, tty_stuffed=0] [L6473] tmp = spin_trylock_bh(& ap->xmit_lock) [L6474] COND TRUE tmp == 0 [L6475] return (0); VAL [\old(last_index)=0, \result=0, __this_module={0:0}, ap={0:0}, ap={0:0}, disc_data_lock={22:0}, done=0, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tty={0:0}, tty_stuffed=0] [L6443] RET ppp_sync_push(ap) VAL [__this_module={0:0}, ap={0:0}, chan={0:0}, chan={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ppp_sync_push(ap)=0, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6444] CALL, EXPR test_and_set_bit(1L, (unsigned long volatile *)(& ap->xmit_flags)) VAL [\old(nr)=1, __this_module={0:0}, addr={0:156}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5290] char c ; [L5294] return ((int )((signed char )c) != 0); VAL [\old(nr)=1, \result=0, __this_module={0:0}, addr={0:156}, addr={0:156}, c=0, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, nr=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6444] RET, EXPR test_and_set_bit(1L, (unsigned long volatile *)(& ap->xmit_flags)) VAL [__this_module={0:0}, ap={0:0}, chan={0:0}, chan={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}, test_and_set_bit(1L, (unsigned long volatile *)(& ap->xmit_flags))=0] [L6444] tmp = test_and_set_bit(1L, (unsigned long volatile *)(& ap->xmit_flags)) [L6445] COND FALSE !(tmp != 0) [L6449] CALL, EXPR ppp_sync_txmunge(ap, skb) [L6390] int proto ; [L6391] unsigned char *data ; [L6392] int islcp ; [L6393] u16 tmp ; [L6394] struct sk_buff *npkt ; [L6395] struct sk_buff *tmp___0 ; [L6396] unsigned char *tmp___1 ; [L6397] unsigned int tmp___2 ; [L6399] EXPR skb->data [L6399] data = skb->data [L6400] CALL, EXPR get_unaligned_be16((void const *)data) [L5737] __u16 tmp ; [L5739] CALL, EXPR __be16_to_cpup((__be16 const *)p) [L5328] __u16 tmp ; [L5330] CALL, EXPR __swab16p(p) [L5320] __u16 tmp ; [L5322] EXPR \read(*p) [L5322] CALL, EXPR __fswab16((int )*p) [L5315] return ((__u16 )((int )((short )((int )val << 8)) | (int )((short )((int )val >> 8)))); VAL [\old(val)=8640, \result=-16351, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, val=8640] [L5322] RET, EXPR __fswab16((int )*p) [L5322] tmp = __fswab16((int )*p) [L5323] return (tmp); VAL [\result=-16351, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, p={0:0}, p={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185] [L5330] RET, EXPR __swab16p(p) [L5330] tmp = __swab16p(p) [L5331] return (tmp); VAL [\result=-16351, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, p={0:0}, p={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185] [L5739] RET, EXPR __be16_to_cpup((__be16 const *)p) [L5739] tmp = __be16_to_cpup((__be16 const *)p) [L5740] return (tmp); VAL [\result=-16351, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, p={0:0}, p={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185] [L6400] RET, EXPR get_unaligned_be16((void const *)data) [L6400] tmp = get_unaligned_be16((void const *)data) [L6401] proto = (int )tmp [L6402] EXPR proto == 49185 && (unsigned int )*(data + 2UL) != 0U [L6402] EXPR data + 2UL [L6402] EXPR proto == 49185 && (unsigned int )*(data + 2UL) != 0U VAL [__this_module={0:0}, ap={0:0}, ap={0:0}, data={0:0}, data + 2UL=2, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, proto == 49185 && (unsigned int )*(data + 2UL) != 0U=1, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185] [L6402] EXPR (proto == 49185 && (unsigned int )*(data + 2UL) != 0U) && (unsigned int )*(data + 2UL) <= 7U [L6402] EXPR data + 2UL [L6402] EXPR (proto == 49185 && (unsigned int )*(data + 2UL) != 0U) && (unsigned int )*(data + 2UL) <= 7U VAL [(proto == 49185 && (unsigned int )*(data + 2UL) != 0U) && (unsigned int )*(data + 2UL) <= 7U=1, __this_module={0:0}, ap={0:0}, ap={0:0}, data={0:0}, data + 2UL=2, data + 2UL=2, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, proto == 49185 && (unsigned int )*(data + 2UL) != 0U=1, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185] [L6402] islcp = (proto == 49185 && (unsigned int )*(data + 2UL) != 0U) && (unsigned int )*(data + 2UL) <= 7U [L6403] EXPR \read(*data) [L6403] EXPR (unsigned int )*data == 0U && (int )ap->flags & 1 VAL [(unsigned int )*data == 0U && (int )ap->flags & 1=0, \read(*data)=-64, __this_module={0:0}, ap={0:0}, ap={0:0}, data={0:0}, disc_data_lock={22:0}, islcp=1, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185] [L6403] COND FALSE !(((unsigned int )*data == 0U && (int )ap->flags & 1) && islcp == 0) [L6407] EXPR ap->flags VAL [__this_module={0:0}, ap={0:0}, ap={0:0}, ap->flags=0, data={0:0}, disc_data_lock={22:0}, islcp=1, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185] [L6407] COND TRUE (ap->flags & 2U) == 0U || islcp != 0 [L6408] CALL, EXPR skb_headroom((struct sk_buff const *)skb) [L5565] EXPR skb->data [L5565] EXPR skb->head [L5565] return ((unsigned int )((long )skb->data) - (unsigned int )((long )skb->head)); [L6408] RET, EXPR skb_headroom((struct sk_buff const *)skb) [L6408] tmp___2 = skb_headroom((struct sk_buff const *)skb) [L6409] COND TRUE tmp___2 <= 1U [L6410] EXPR skb->len VAL [__this_module={0:0}, ap={0:0}, ap={0:0}, data={0:0}, disc_data_lock={22:0}, islcp=1, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, skb->len=0, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185, tmp___2=1] [L6410] CALL, EXPR ldv_dev_alloc_skb_15(skb->len + 2U) VAL [\old(last_index)=0, \old(length)=2, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6970] struct sk_buff *tmp ; VAL [\old(last_index)=0, \old(length)=2, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, length=2, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6972] CALL, EXPR ldv_skb_alloc() VAL [\old(last_index)=0, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7150] void *skb ; [L7151] void *tmp___7 ; VAL [\old(last_index)=0, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7153] CALL, EXPR ldv_zalloc(sizeof(struct sk_buff___0 )) VAL [\old(last_index)=0, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5631] void *p ; [L5632] void *tmp ; [L5633] int tmp___0 ; [L5635] tmp___0 = __VERIFIER_nondet_int() [L5636] COND FALSE !(tmp___0 != 0) [L5639] EXPR, FCALL calloc(1UL, size) [L5639] tmp = calloc(1UL, size) [L5640] p = tmp VAL [\old(last_index)=0, \old(size)=248, __this_module={0:0}, calloc(1UL, size)={30:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, p={30:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=248, sync_ops={21:0}, sync_ops_group0={0:0}, tmp={30:0}, tmp___0=0] [L5641] CALL assume_abort_if_not((unsigned long )p != (unsigned long )((void *)0)) VAL [\old(cond)=1, \old(last_index)=0, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5610] COND FALSE !(!cond) VAL [\old(cond)=1, \old(last_index)=0, __this_module={0:0}, cond=1, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5641] RET assume_abort_if_not((unsigned long )p != (unsigned long )((void *)0)) VAL [\old(last_index)=0, \old(size)=248, __this_module={0:0}, calloc(1UL, size)={30:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, p={30:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=248, sync_ops={21:0}, sync_ops_group0={0:0}, tmp={30:0}, tmp___0=0] [L5642] return (p); VAL [\old(last_index)=0, \old(size)=248, \result={30:0}, __this_module={0:0}, calloc(1UL, size)={30:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, p={30:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=248, sync_ops={21:0}, sync_ops_group0={0:0}, tmp={30:0}, tmp___0=0] [L7153] RET, EXPR ldv_zalloc(sizeof(struct sk_buff___0 )) VAL [\old(last_index)=0, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldv_zalloc(sizeof(struct sk_buff___0 ))={30:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7153] tmp___7 = ldv_zalloc(sizeof(struct sk_buff___0 )) [L7154] skb = (struct sk_buff___0 *)tmp___7 VAL [\old(last_index)=0, __this_module={0:0}, disc_data_lock={22:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, skb={30:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___7={30:0}] [L7155] COND FALSE !(! skb) [L7158] CALL ldv_set_add(LDV_SKBS, skb) [L7026] int i ; [L7028] i = 0 VAL [\old(last_index)=0, __this_module={0:0}, disc_data_lock={22:0}, e={30:0}, e={30:0}, i=0, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7029] COND TRUE 1 VAL [\old(last_index)=0, __this_module={0:0}, disc_data_lock={22:0}, e={30:0}, e={30:0}, i=0, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7030] COND FALSE !(i < last_index) VAL [\old(last_index)=0, __this_module={0:0}, disc_data_lock={22:0}, e={30:0}, e={30:0}, i=0, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7040] COND TRUE last_index < 15 [L7041] set_impl[last_index] = e [L7042] last_index = last_index + 1 VAL [\old(last_index)=0, __this_module={0:0}, disc_data_lock={22:0}, e={30:0}, e={30:0}, i=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7158] RET ldv_set_add(LDV_SKBS, skb) [L7159] return (skb); VAL [\old(last_index)=0, \result={30:0}, __this_module={0:0}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, skb={30:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___7={30:0}] [L6972] RET, EXPR ldv_skb_alloc() VAL [\old(last_index)=0, \old(length)=2, __this_module={0:0}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_skb_alloc()={30:0}, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, length=2, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6972] tmp = ldv_skb_alloc() [L6973] return (tmp); VAL [\old(last_index)=0, \old(length)=2, \result={30:0}, __this_module={0:0}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, length=2, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp={30:0}] [L6410] RET, EXPR ldv_dev_alloc_skb_15(skb->len + 2U) VAL [__this_module={0:0}, ap={0:0}, ap={0:0}, data={0:0}, disc_data_lock={22:0}, islcp=1, last_index=1, ldv_dev_alloc_skb_15(skb->len + 2U)={30:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, skb->len=0, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185, tmp___2=1] [L6410] tmp___0 = ldv_dev_alloc_skb_15(skb->len + 2U) [L6411] npkt = tmp___0 VAL [__this_module={0:0}, ap={0:0}, ap={0:0}, data={0:0}, disc_data_lock={22:0}, islcp=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, npkt={30:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185, tmp___0={30:0}, tmp___2=1] [L6412] COND FALSE !((unsigned long )npkt == (unsigned long )((struct sk_buff *)0)) VAL [__this_module={0:0}, ap={0:0}, ap={0:0}, data={0:0}, disc_data_lock={22:0}, islcp=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, npkt={30:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185, tmp___0={30:0}, tmp___2=1] [L6417] CALL skb_reserve(npkt, 2) VAL [\old(len)=2, __this_module={0:0}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, skb={30:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5579] EXPR skb->data [L5579] skb->data = skb->data + (unsigned long )len [L5580] EXPR skb->tail [L5580] skb->tail = skb->tail + (sk_buff_data_t )len [L6417] RET skb_reserve(npkt, 2) VAL [__this_module={0:0}, ap={0:0}, ap={0:0}, data={0:0}, disc_data_lock={22:0}, islcp=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, npkt={30:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185, tmp___0={30:0}, tmp___2=1] [L6418] EXPR skb->len VAL [__this_module={0:0}, ap={0:0}, ap={0:0}, data={0:0}, disc_data_lock={22:0}, islcp=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, npkt={30:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, skb->len=0, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185, tmp___0={30:0}, tmp___2=1] [L6418] CALL, EXPR skb_put(npkt, skb->len) VAL [\old(arg1)=null, __this_module={0:0}, arg0={30:0}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7333] EXPR arg0->data [L7333] EXPR arg0->tail [L7333] unsigned char *ret_val = arg0->data + arg0->tail; [L7334] EXPR arg0->tail [L7334] arg0->tail += arg1 [L7335] return ret_val; VAL [\old(arg1)=null, \result={18014398509492224:0}, __this_module={0:0}, arg0={30:0}, arg0={30:0}, arg1=null, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, ret_val={18014398509492224:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6418] RET, EXPR skb_put(npkt, skb->len) VAL [__this_module={0:0}, ap={0:0}, ap={0:0}, data={0:0}, disc_data_lock={22:0}, islcp=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, npkt={30:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, skb->len=0, skb_put(npkt, skb->len)={18014398509492224:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185, tmp___0={30:0}, tmp___2=1] [L6418] tmp___1 = skb_put(npkt, skb->len) [L6419] EXPR skb->len [L6419] CALL skb_copy_from_linear_data((struct sk_buff const *)skb, (void *)tmp___1, skb->len) [L5592] size_t __len ; [L5593] void *__ret ; [L5595] __len = (size_t )len [L5596] EXPR skb->data VAL [\old(len)=0, __len=0, __this_module={0:0}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, len=0, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, skb->data={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}, to={18014398509492224:0}, to={18014398509492224:0}] [L5596] EXPR, FCALL memcpy(to, (void const *)skb->data, __len) VAL [\old(len)=0, __len=0, __this_module={0:0}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, len=0, memcpy(to, (void const *)skb->data, __len)={18014398509492224:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, skb->data={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}, to={18014398509492224:0}, to={18014398509492224:0}] [L5596] __ret = memcpy(to, (void const *)skb->data, __len) [L6419] RET skb_copy_from_linear_data((struct sk_buff const *)skb, (void *)tmp___1, skb->len) [L6420] CALL ldv_consume_skb_17(skb) [L6986] CALL ldv_skb_free(ldv_func_arg1) VAL [\old(last_index)=1, __this_module={0:0}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, skb={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7173] CALL ldv_set_remove(LDV_SKBS, skb) VAL [\old(last_index)=1, __this_module={0:0}, disc_data_lock={22:0}, e={0:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7051] int i ; [L7052] int deleted_index ; [L7054] deleted_index = -1 [L7055] i = 0 VAL [\old(last_index)=1, __this_module={0:0}, deleted_index=4294967295, disc_data_lock={22:0}, e={0:0}, e={0:0}, i=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7056] COND TRUE 1 VAL [\old(last_index)=1, __this_module={0:0}, deleted_index=4294967295, disc_data_lock={22:0}, e={0:0}, e={0:0}, i=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7057] COND TRUE i < last_index VAL [\old(last_index)=1, __this_module={0:0}, deleted_index=4294967295, disc_data_lock={22:0}, e={0:0}, e={0:0}, i=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7061] EXPR set_impl[i] VAL [\old(last_index)=1, __this_module={0:0}, deleted_index=4294967295, disc_data_lock={22:0}, e={0:0}, e={0:0}, i=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, set_impl[i]={30:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7061] COND FALSE !((unsigned long )set_impl[i] == (unsigned long )e) [L7066] i = i + 1 VAL [\old(last_index)=1, __this_module={0:0}, deleted_index=4294967295, disc_data_lock={22:0}, e={0:0}, e={0:0}, i=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7056] COND TRUE 1 VAL [\old(last_index)=1, __this_module={0:0}, deleted_index=4294967295, disc_data_lock={22:0}, e={0:0}, e={0:0}, i=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7057] COND FALSE !(i < last_index) VAL [\old(last_index)=1, __this_module={0:0}, deleted_index=4294967295, disc_data_lock={22:0}, e={0:0}, e={0:0}, i=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7068] COND FALSE !(deleted_index != -1) VAL [\old(last_index)=1, __this_module={0:0}, deleted_index=4294967295, disc_data_lock={22:0}, e={0:0}, e={0:0}, i=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7173] RET ldv_set_remove(LDV_SKBS, skb) VAL [\old(last_index)=1, __this_module={0:0}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6986] RET ldv_skb_free(ldv_func_arg1) VAL [__this_module={0:0}, disc_data_lock={22:0}, last_index=1, ldv_func_arg1={0:0}, ldv_func_arg1={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6420] RET ldv_consume_skb_17(skb) [L6421] skb = npkt VAL [__this_module={0:0}, ap={0:0}, ap={0:0}, data={0:0}, disc_data_lock={22:0}, islcp=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, npkt={30:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={30:0}, skb={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185, tmp___0={30:0}, tmp___1={18014398509492224:0}, tmp___2=1] [L6424] CALL skb_push(skb, 2U) VAL [\old(arg1)=null, __this_module={0:0}, arg0={30:0}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7330] CALL, EXPR ldv_malloc(sizeof(unsigned char)) VAL [\old(size)=1, __this_module={0:0}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5614] void *p ; [L5615] void *tmp ; [L5616] int tmp___0 ; [L5618] tmp___0 = __VERIFIER_nondet_int() [L5619] COND TRUE tmp___0 != 0 [L5620] return ((void *)0); VAL [\old(size)=1, \result={0:0}, __this_module={0:0}, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, size=1, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___0=2147483648] [L7330] RET, EXPR ldv_malloc(sizeof(unsigned char)) VAL [\old(arg1)=null, __this_module={0:0}, arg0={30:0}, arg0={30:0}, arg1=null, disc_data_lock={22:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_malloc(sizeof(unsigned char))={0:0}, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7330] return ldv_malloc(sizeof(unsigned char)); [L6424] RET skb_push(skb, 2U) VAL [__this_module={0:0}, ap={0:0}, ap={0:0}, data={0:0}, disc_data_lock={22:0}, islcp=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, npkt={30:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={30:0}, skb_push(skb, 2U)={0:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185, tmp___0={30:0}, tmp___1={18014398509492224:0}, tmp___2=1] [L6425] EXPR skb->data [L6425] *(skb->data) = 255U [L6426] EXPR skb->data [L6426] *(skb->data + 1UL) = 3U [L6429] ap->last_xmit = jiffies [L6430] (unsigned long )skb != (unsigned long )((struct sk_buff *)0) && (ap->flags & 262144U) != 0U [L6430] EXPR ap->flags [L6430] (unsigned long )skb != (unsigned long )((struct sk_buff *)0) && (ap->flags & 262144U) != 0U VAL [(unsigned long )skb != (unsigned long )((struct sk_buff *)0) && (ap->flags & 262144U) != 0U=0, __this_module={0:0}, ap={0:0}, ap={0:0}, ap->flags=0, data={0:0}, disc_data_lock={22:0}, islcp=1, jiffies=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, npkt={30:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={30:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185, tmp___0={30:0}, tmp___1={18014398509492224:0}, tmp___2=1] [L6430] COND FALSE !((unsigned long )skb != (unsigned long )((struct sk_buff *)0) && (ap->flags & 262144U) != 0U) [L6434] return (skb); VAL [\result={30:0}, __this_module={0:0}, ap={0:0}, ap={0:0}, data={0:0}, disc_data_lock={22:0}, islcp=1, jiffies=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, npkt={30:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, proto=49185, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={30:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=49185, tmp___0={30:0}, tmp___1={18014398509492224:0}, tmp___2=1] [L6449] RET, EXPR ppp_sync_txmunge(ap, skb) [L6449] skb = ppp_sync_txmunge(ap, skb) [L6450] COND TRUE (unsigned long )skb != (unsigned long )((struct sk_buff *)0) [L6451] ap->tpkt = skb VAL [__this_module={0:0}, ap={0:0}, chan={0:0}, chan={0:0}, disc_data_lock={22:0}, jiffies=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={30:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0] [L6455] CALL ppp_sync_push(ap) VAL [\old(last_index)=1, __this_module={0:0}, disc_data_lock={22:0}, jiffies=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L6461] int sent ; [L6462] int done ; [L6463] struct tty_struct *tty ; [L6464] int tty_stuffed ; [L6465] int tmp ; [L6466] int tmp___0 ; [L6467] int tmp___1 ; [L6468] int tmp___2 ; [L6470] done = 0 [L6471] EXPR ap->tty [L6471] tty = ap->tty [L6472] tty_stuffed = 0 VAL [\old(last_index)=1, __this_module={0:0}, ap={0:0}, ap={0:0}, disc_data_lock={22:0}, done=0, jiffies=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tty={0:0}, tty_stuffed=0] [L6473] CALL, EXPR spin_trylock_bh(& ap->xmit_lock) VAL [\old(last_index)=1, __this_module={0:0}, disc_data_lock={22:0}, jiffies=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5417] int tmp ; [L5419] CALL, EXPR _raw_spin_trylock_bh(& lock->ldv_6338.rlock) [L7268] return __VERIFIER_nondet_int(); [L5419] RET, EXPR _raw_spin_trylock_bh(& lock->ldv_6338.rlock) [L5419] tmp = _raw_spin_trylock_bh(& lock->ldv_6338.rlock) [L5420] return (tmp); VAL [\old(last_index)=1, \result=0, __this_module={0:0}, disc_data_lock={22:0}, jiffies=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, lock={0:20}, lock={0:20}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0] [L6473] RET, EXPR spin_trylock_bh(& ap->xmit_lock) VAL [\old(last_index)=1, __this_module={0:0}, ap={0:0}, ap={0:0}, disc_data_lock={22:0}, done=0, jiffies=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, spin_trylock_bh(& ap->xmit_lock)=0, sync_ops={21:0}, sync_ops_group0={0:0}, tty={0:0}, tty_stuffed=0] [L6473] tmp = spin_trylock_bh(& ap->xmit_lock) [L6474] COND TRUE tmp == 0 [L6475] return (0); VAL [\old(last_index)=1, \result=0, __this_module={0:0}, ap={0:0}, ap={0:0}, disc_data_lock={22:0}, done=0, jiffies=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tty={0:0}, tty_stuffed=0] [L6455] RET ppp_sync_push(ap) VAL [__this_module={0:0}, ap={0:0}, chan={0:0}, chan={0:0}, disc_data_lock={22:0}, jiffies=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ppp_sync_push(ap)=0, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={30:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0] [L6456] return (1); VAL [\result=1, __this_module={0:0}, ap={0:0}, chan={0:0}, chan={0:0}, disc_data_lock={22:0}, jiffies=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, skb={0:0}, skb={30:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0] [L6882] RET ppp_sync_send(sync_ops_group0, ldvarg16) [L6883] ldv_state_variable_2 = 1 VAL [__this_module={0:0}, disc_data_lock={22:0}, jiffies=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldvarg0=27, ldvarg1=27, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=26, ldvarg15=28, ldvarg16={0:0}, ldvarg2={0:0}, ldvarg3=29, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=26, tmp___14={0:0}, tmp___15=28, tmp___16=2, tmp___18=1, tmp___19=0, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=27, tmp___8={0:0}, tmp___9={0:0}] [L6740] tmp___16 = __VERIFIER_nondet_int() [L6742] case 0: [L6838] case 1: VAL [__this_module={0:0}, disc_data_lock={22:0}, jiffies=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldvarg0=27, ldvarg1=27, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=26, ldvarg15=28, ldvarg16={0:0}, ldvarg2={0:0}, ldvarg3=29, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=26, tmp___14={0:0}, tmp___15=28, tmp___16=1, tmp___18=1, tmp___19=0, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=27, tmp___8={0:0}, tmp___9={0:0}] [L6839] COND TRUE ldv_state_variable_0 != 0 [L6840] tmp___18 = __VERIFIER_nondet_int() [L6842] case 0: VAL [__this_module={0:0}, disc_data_lock={22:0}, jiffies=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=1, ldvarg0=27, ldvarg1=27, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=26, ldvarg15=28, ldvarg16={0:0}, ldvarg2={0:0}, ldvarg3=29, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=26, tmp___14={0:0}, tmp___15=28, tmp___16=1, tmp___18=0, tmp___19=0, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=27, tmp___8={0:0}, tmp___9={0:0}] [L6843] COND TRUE ldv_state_variable_0 == 3 && ref_cnt == 0 [L6844] CALL ppp_sync_cleanup() [L6627] int tmp ; [L6629] CALL, EXPR tty_unregister_ldisc(14) [L7366] return __VERIFIER_nondet_int(); [L6629] RET, EXPR tty_unregister_ldisc(14) [L6629] tmp = tty_unregister_ldisc(14) [L6630] COND TRUE tmp != 0 [L6844] RET ppp_sync_cleanup() [L6845] ldv_state_variable_0 = 2 VAL [__this_module={0:0}, disc_data_lock={22:0}, jiffies=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=1, ldvarg0=27, ldvarg1=27, ldvarg10={0:0}, ldvarg11=0, ldvarg12={0:0}, ldvarg13={0:0}, ldvarg14=26, ldvarg15=28, ldvarg16={0:0}, ldvarg2={0:0}, ldvarg3=29, ldvarg4={0:0}, ldvarg5={0:0}, ldvarg6={0:0}, ldvarg7={0:0}, ldvarg8=0, ldvarg9={0:0}, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp=0, tmp___0={0:0}, tmp___1=29, tmp___10={0:0}, tmp___11={0:0}, tmp___12={0:0}, tmp___13=26, tmp___14={0:0}, tmp___15=28, tmp___16=1, tmp___18=0, tmp___19=0, tmp___2=27, tmp___3={0:0}, tmp___4={0:0}, tmp___5={0:0}, tmp___6=0, tmp___7=27, tmp___8={0:0}, tmp___9={0:0}] [L6907] CALL ldv_check_final_state() [L7217] int tmp___7 ; [L7219] CALL, EXPR ldv_set_is_empty(LDV_SKBS) [L7108] return (last_index == 0); VAL [\result=0, __this_module={0:0}, disc_data_lock={22:0}, jiffies=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L7219] RET, EXPR ldv_set_is_empty(LDV_SKBS) [L7219] tmp___7 = ldv_set_is_empty(LDV_SKBS) [L7220] COND FALSE !(\read(tmp___7)) VAL [__this_module={0:0}, disc_data_lock={22:0}, jiffies=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}, tmp___7=0] [L7222] CALL ldv_error() VAL [__this_module={0:0}, disc_data_lock={22:0}, jiffies=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] [L5666] reach_error() VAL [__this_module={0:0}, disc_data_lock={22:0}, jiffies=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=1, ppp_sync_ldisc={23:0}, ppp_sync_ldisc_group1={0:0}, ref_cnt=0, set_impl={24:0}, sync_ops={21:0}, sync_ops_group0={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 645 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 123.3s, OverallIterations: 17, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 101.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 mSolverCounterUnknown, 15588 SdHoareTripleChecker+Valid, 96.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15196 mSDsluCounter, 80244 SdHoareTripleChecker+Invalid, 93.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 62394 mSDsCounter, 3234 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7599 IncrementalHoareTripleChecker+Invalid, 10865 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3234 mSolverCounterUnsat, 17850 mSDtfsCounter, 7599 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3054 GetRequests, 2945 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11169occurred in iteration=16, InterpolantAutomatonStates: 113, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 16 MinimizatonAttempts, 9819 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 5.4s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 3022 NumberOfCodeBlocks, 3022 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 3001 ConstructedInterpolants, 0 QuantifiedInterpolants, 4826 SizeOfPredicates, 73 NumberOfNonLiveVariables, 11797 ConjunctsInSsa, 149 ConjunctsInUnsatCore, 17 InterpolantComputations, 15 PerfectInterpolantSequences, 4930/4944 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-21 11:12:46,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample