./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 f4b24e32 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-?-f4b24e3 [2022-07-14 00:16:10,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 00:16:10,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 00:16:10,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 00:16:10,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 00:16:10,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 00:16:10,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 00:16:10,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 00:16:10,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 00:16:10,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 00:16:10,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 00:16:10,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 00:16:10,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 00:16:10,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 00:16:10,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 00:16:10,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 00:16:10,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 00:16:10,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 00:16:10,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 00:16:10,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 00:16:10,840 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 00:16:10,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 00:16:10,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 00:16:10,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 00:16:10,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 00:16:10,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 00:16:10,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 00:16:10,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 00:16:10,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 00:16:10,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 00:16:10,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 00:16:10,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 00:16:10,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 00:16:10,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 00:16:10,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 00:16:10,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 00:16:10,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 00:16:10,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 00:16:10,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 00:16:10,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 00:16:10,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 00:16:10,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 00:16:10,861 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-14 00:16:10,883 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 00:16:10,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 00:16:10,884 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 00:16:10,884 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 00:16:10,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 00:16:10,885 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 00:16:10,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 00:16:10,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 00:16:10,886 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 00:16:10,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 00:16:10,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 00:16:10,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 00:16:10,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 00:16:10,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 00:16:10,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 00:16:10,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 00:16:10,888 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 00:16:10,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 00:16:10,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 00:16:10,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 00:16:10,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 00:16:10,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:16:10,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 00:16:10,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 00:16:10,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 00:16:10,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 00:16:10,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 00:16:10,891 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 00:16:10,891 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 00:16:10,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 00:16:10,891 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 389f662f7096bd36438270dc54f296be4073de8eeb864b893c17044d6fb4cc06 [2022-07-14 00:16:11,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 00:16:11,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 00:16:11,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 00:16:11,114 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 00:16:11,115 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 00:16:11,116 INFO L432 ainManager$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 [2022-07-14 00:16:11,176 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81b524fbb/22a8d77c501e4b8babd8c319ab68822e/FLAGb167d2890 [2022-07-14 00:16:11,745 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 00:16:11,746 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 [2022-07-14 00:16:11,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81b524fbb/22a8d77c501e4b8babd8c319ab68822e/FLAGb167d2890 [2022-07-14 00:16:12,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81b524fbb/22a8d77c501e4b8babd8c319ab68822e [2022-07-14 00:16:12,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 00:16:12,144 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 00:16:12,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 00:16:12,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 00:16:12,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 00:16:12,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:16:12" (1/1) ... [2022-07-14 00:16:12,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a8facf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:12, skipping insertion in model container [2022-07-14 00:16:12,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:16:12" (1/1) ... [2022-07-14 00:16:12,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 00:16:12,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 00:16:12,825 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] [2022-07-14 00:16:13,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:16:13,137 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 00:16:13,243 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] [2022-07-14 00:16:13,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:16:13,375 INFO L208 MainTranslator]: Completed translation [2022-07-14 00:16:13,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:13 WrapperNode [2022-07-14 00:16:13,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 00:16:13,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 00:16:13,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 00:16:13,378 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 00:16:13,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:13" (1/1) ... [2022-07-14 00:16:13,435 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:13" (1/1) ... [2022-07-14 00:16:13,529 INFO L137 Inliner]: procedures = 176, calls = 448, calls flagged for inlining = 92, calls inlined = 85, statements flattened = 1769 [2022-07-14 00:16:13,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 00:16:13,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 00:16:13,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 00:16:13,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 00:16:13,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:13" (1/1) ... [2022-07-14 00:16:13,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:13" (1/1) ... [2022-07-14 00:16:13,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:13" (1/1) ... [2022-07-14 00:16:13,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:13" (1/1) ... [2022-07-14 00:16:13,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:13" (1/1) ... [2022-07-14 00:16:13,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:13" (1/1) ... [2022-07-14 00:16:13,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:13" (1/1) ... [2022-07-14 00:16:13,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 00:16:13,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 00:16:13,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 00:16:13,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 00:16:13,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:13" (1/1) ... [2022-07-14 00:16:13,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:16:13,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:16:13,650 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) [2022-07-14 00:16:13,651 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 [2022-07-14 00:16:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-14 00:16:13,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-14 00:16:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_15 [2022-07-14 00:16:13,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_15 [2022-07-14 00:16:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_poll [2022-07-14 00:16:13,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_poll [2022-07-14 00:16:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-14 00:16:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-07-14 00:16:13,690 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-07-14 00:16:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-14 00:16:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-14 00:16:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-14 00:16:13,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-14 00:16:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 00:16:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-07-14 00:16:13,690 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-07-14 00:16:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2022-07-14 00:16:13,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2022-07-14 00:16:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-14 00:16:13,690 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-14 00:16:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-07-14 00:16:13,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-07-14 00:16:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-14 00:16:13,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-14 00:16:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure spin_trylock_bh [2022-07-14 00:16:13,691 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_trylock_bh [2022-07-14 00:16:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-14 00:16:13,691 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-14 00:16:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-07-14 00:16:13,691 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-07-14 00:16:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-14 00:16:13,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-14 00:16:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_synctty_ioctl [2022-07-14 00:16:13,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_synctty_ioctl [2022-07-14 00:16:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-14 00:16:13,691 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-14 00:16:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 00:16:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-14 00:16:13,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-14 00:16:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-07-14 00:16:13,691 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-07-14 00:16:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_close [2022-07-14 00:16:13,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_close [2022-07-14 00:16:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-14 00:16:13,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-14 00:16:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-14 00:16:13,692 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-14 00:16:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_print_buffer [2022-07-14 00:16:13,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_print_buffer [2022-07-14 00:16:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-14 00:16:13,692 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-14 00:16:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 00:16:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-07-14 00:16:13,692 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-07-14 00:16:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-14 00:16:13,692 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-14 00:16:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 00:16:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 00:16:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 00:16:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-07-14 00:16:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-07-14 00:16:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-07-14 00:16:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-07-14 00:16:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 00:16:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-07-14 00:16:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-07-14 00:16:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-07-14 00:16:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-07-14 00:16:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure sp_put [2022-07-14 00:16:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_put [2022-07-14 00:16:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 00:16:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-14 00:16:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-07-14 00:16:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-07-14 00:16:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_hangup [2022-07-14 00:16:13,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_hangup [2022-07-14 00:16:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-14 00:16:13,694 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-14 00:16:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-14 00:16:13,694 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-14 00:16:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure sp_get [2022-07-14 00:16:13,694 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_get [2022-07-14 00:16:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-14 00:16:13,694 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-14 00:16:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 00:16:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-07-14 00:16:13,694 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-07-14 00:16:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-14 00:16:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-14 00:16:13,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-14 00:16:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-14 00:16:13,695 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-14 00:16:13,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 00:16:13,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 00:16:13,695 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_push [2022-07-14 00:16:13,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_push [2022-07-14 00:16:14,035 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 00:16:14,038 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 00:16:14,102 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-14 00:16:15,050 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 00:16:15,064 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 00:16:15,065 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-14 00:16:15,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:16:15 BoogieIcfgContainer [2022-07-14 00:16:15,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 00:16:15,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 00:16:15,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 00:16:15,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 00:16:15,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 12:16:12" (1/3) ... [2022-07-14 00:16:15,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ec9ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:16:15, skipping insertion in model container [2022-07-14 00:16:15,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:13" (2/3) ... [2022-07-14 00:16:15,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ec9ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:16:15, skipping insertion in model container [2022-07-14 00:16:15,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:16:15" (3/3) ... [2022-07-14 00:16:15,074 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 [2022-07-14 00:16:15,085 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 00:16:15,085 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-14 00:16:15,152 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 00:16:15,158 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@37130ba6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2d9745ed [2022-07-14 00:16:15,158 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-14 00:16:15,166 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) [2022-07-14 00:16:15,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-14 00:16:15,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:16:15,187 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] [2022-07-14 00:16:15,188 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:16:15,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:16:15,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1758611482, now seen corresponding path program 1 times [2022-07-14 00:16:15,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:16:15,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89131819] [2022-07-14 00:16:15,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:16:15,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:16:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:15,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:16:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:15,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:16:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:15,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:16:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:15,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:16:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:15,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:16:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:15,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:16:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:15,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:16:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:15,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:16:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:15,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:16:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:15,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:16:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:15,683 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-14 00:16:15,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:16:15,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89131819] [2022-07-14 00:16:15,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89131819] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:16:15,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:16:15,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:16:15,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143356648] [2022-07-14 00:16:15,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:16:15,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:16:15,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:16:15,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:16:15,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 00:16:15,731 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) [2022-07-14 00:16:17,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:16:17,193 INFO L93 Difference]: Finished difference Result 2033 states and 2996 transitions. [2022-07-14 00:16:17,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:16:17,196 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 [2022-07-14 00:16:17,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:16:17,212 INFO L225 Difference]: With dead ends: 2033 [2022-07-14 00:16:17,212 INFO L226 Difference]: Without dead ends: 1378 [2022-07-14 00:16:17,220 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 [2022-07-14 00:16:17,238 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 1248 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 1939 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-14 00:16:17,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1338 Valid, 1939 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-14 00:16:17,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2022-07-14 00:16:17,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1222. [2022-07-14 00:16:17,341 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) [2022-07-14 00:16:17,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1709 transitions. [2022-07-14 00:16:17,347 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1709 transitions. Word has length 78 [2022-07-14 00:16:17,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:16:17,348 INFO L495 AbstractCegarLoop]: Abstraction has 1222 states and 1709 transitions. [2022-07-14 00:16:17,348 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) [2022-07-14 00:16:17,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1709 transitions. [2022-07-14 00:16:17,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-14 00:16:17,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:16:17,352 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] [2022-07-14 00:16:17,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 00:16:17,352 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:16:17,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:16:17,353 INFO L85 PathProgramCache]: Analyzing trace with hash -152487068, now seen corresponding path program 1 times [2022-07-14 00:16:17,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:16:17,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305731315] [2022-07-14 00:16:17,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:16:17,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:16:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:17,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:16:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:17,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:16:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:17,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:16:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:17,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:16:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:17,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:16:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:17,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:16:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:17,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:16:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:17,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:16:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:17,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:16:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:17,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:16:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:17,559 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-14 00:16:17,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:16:17,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305731315] [2022-07-14 00:16:17,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305731315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:16:17,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:16:17,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:16:17,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942398654] [2022-07-14 00:16:17,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:16:17,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:16:17,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:16:17,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:16:17,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:16:17,564 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) [2022-07-14 00:16:19,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:16:19,070 INFO L93 Difference]: Finished difference Result 3917 states and 5611 transitions. [2022-07-14 00:16:19,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 00:16:19,071 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 [2022-07-14 00:16:19,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:16:19,085 INFO L225 Difference]: With dead ends: 3917 [2022-07-14 00:16:19,086 INFO L226 Difference]: Without dead ends: 2713 [2022-07-14 00:16:19,090 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 [2022-07-14 00:16:19,091 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 1267 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-14 00:16:19,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1360 Valid, 3083 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 1655 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-14 00:16:19,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2022-07-14 00:16:19,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2509. [2022-07-14 00:16:19,186 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) [2022-07-14 00:16:19,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 3560 transitions. [2022-07-14 00:16:19,199 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 3560 transitions. Word has length 82 [2022-07-14 00:16:19,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:16:19,201 INFO L495 AbstractCegarLoop]: Abstraction has 2509 states and 3560 transitions. [2022-07-14 00:16:19,201 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) [2022-07-14 00:16:19,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 3560 transitions. [2022-07-14 00:16:19,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-14 00:16:19,214 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:16:19,214 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] [2022-07-14 00:16:19,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 00:16:19,215 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:16:19,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:16:19,215 INFO L85 PathProgramCache]: Analyzing trace with hash -950375967, now seen corresponding path program 1 times [2022-07-14 00:16:19,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:16:19,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216847838] [2022-07-14 00:16:19,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:16:19,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:16:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:19,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:16:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:19,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:16:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:19,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:16:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:19,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:16:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:19,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:16:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:19,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:16:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:19,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:16:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:19,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:16:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:19,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:16:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:19,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:16:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:19,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-14 00:16:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:19,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 00:16:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:19,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:16:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:19,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:19,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-14 00:16:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-14 00:16:19,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:16:19,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216847838] [2022-07-14 00:16:19,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216847838] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:16:19,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:16:19,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 00:16:19,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330077095] [2022-07-14 00:16:19,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:16:19,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 00:16:19,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:16:19,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 00:16:19,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:16:19,466 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) [2022-07-14 00:16:21,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:16:21,131 INFO L93 Difference]: Finished difference Result 6827 states and 9761 transitions. [2022-07-14 00:16:21,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 00:16:21,132 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 [2022-07-14 00:16:21,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:16:21,152 INFO L225 Difference]: With dead ends: 6827 [2022-07-14 00:16:21,153 INFO L226 Difference]: Without dead ends: 4342 [2022-07-14 00:16:21,162 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 [2022-07-14 00:16:21,163 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 1615 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 787 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 2495 SdHoareTripleChecker+Invalid, 2110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 787 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-14 00:16:21,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1687 Valid, 2495 Invalid, 2110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [787 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-14 00:16:21,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4342 states. [2022-07-14 00:16:21,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4342 to 3931. [2022-07-14 00:16:21,322 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) [2022-07-14 00:16:21,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3931 states to 3931 states and 5549 transitions. [2022-07-14 00:16:21,342 INFO L78 Accepts]: Start accepts. Automaton has 3931 states and 5549 transitions. Word has length 128 [2022-07-14 00:16:21,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:16:21,345 INFO L495 AbstractCegarLoop]: Abstraction has 3931 states and 5549 transitions. [2022-07-14 00:16:21,345 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) [2022-07-14 00:16:21,346 INFO L276 IsEmpty]: Start isEmpty. Operand 3931 states and 5549 transitions. [2022-07-14 00:16:21,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-14 00:16:21,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:16:21,357 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] [2022-07-14 00:16:21,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-14 00:16:21,359 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:16:21,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:16:21,360 INFO L85 PathProgramCache]: Analyzing trace with hash -944835305, now seen corresponding path program 1 times [2022-07-14 00:16:21,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:16:21,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801272704] [2022-07-14 00:16:21,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:16:21,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:16:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:21,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:16:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:21,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:16:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:21,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:16:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:21,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:16:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:21,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:16:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:21,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:16:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:21,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:16:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:21,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:16:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:21,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:16:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:21,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:16:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:21,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-14 00:16:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:21,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:21,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:16:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:21,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 00:16:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:21,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:21,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:16:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:21,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-14 00:16:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:21,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-14 00:16:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:21,554 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-14 00:16:21,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:16:21,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801272704] [2022-07-14 00:16:21,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801272704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:16:21,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:16:21,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 00:16:21,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9163735] [2022-07-14 00:16:21,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:16:21,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:16:21,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:16:21,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:16:21,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:16:21,556 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) [2022-07-14 00:16:23,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:16:23,044 INFO L93 Difference]: Finished difference Result 9990 states and 14092 transitions. [2022-07-14 00:16:23,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 00:16:23,045 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 [2022-07-14 00:16:23,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:16:23,069 INFO L225 Difference]: With dead ends: 9990 [2022-07-14 00:16:23,069 INFO L226 Difference]: Without dead ends: 6083 [2022-07-14 00:16:23,079 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 [2022-07-14 00:16:23,082 INFO L413 NwaCegarLoop]: 1194 mSDtfsCounter, 1046 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-14 00:16:23,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 2738 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-14 00:16:23,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6083 states. [2022-07-14 00:16:23,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6083 to 5590. [2022-07-14 00:16:23,298 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) [2022-07-14 00:16:23,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5590 states to 5590 states and 7782 transitions. [2022-07-14 00:16:23,316 INFO L78 Accepts]: Start accepts. Automaton has 5590 states and 7782 transitions. Word has length 149 [2022-07-14 00:16:23,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:16:23,316 INFO L495 AbstractCegarLoop]: Abstraction has 5590 states and 7782 transitions. [2022-07-14 00:16:23,317 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) [2022-07-14 00:16:23,317 INFO L276 IsEmpty]: Start isEmpty. Operand 5590 states and 7782 transitions. [2022-07-14 00:16:23,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-14 00:16:23,325 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:16:23,325 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] [2022-07-14 00:16:23,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-14 00:16:23,327 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:16:23,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:16:23,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1643009203, now seen corresponding path program 1 times [2022-07-14 00:16:23,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:16:23,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732450120] [2022-07-14 00:16:23,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:16:23,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:16:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:23,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:16:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:23,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:16:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:23,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:16:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:23,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:16:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:23,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:16:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:23,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:16:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:23,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:16:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:23,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:16:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:23,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:16:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:23,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:16:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:23,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-14 00:16:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:23,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:16:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:23,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-14 00:16:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:23,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 00:16:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:23,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:16:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:23,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:23,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-14 00:16:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:23,497 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-14 00:16:23,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:16:23,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732450120] [2022-07-14 00:16:23,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732450120] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:16:23,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:16:23,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 00:16:23,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654868447] [2022-07-14 00:16:23,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:16:23,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 00:16:23,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:16:23,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 00:16:23,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:16:23,500 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) [2022-07-14 00:16:25,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:16:25,710 INFO L93 Difference]: Finished difference Result 14712 states and 20604 transitions. [2022-07-14 00:16:25,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 00:16:25,711 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 [2022-07-14 00:16:25,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:16:25,748 INFO L225 Difference]: With dead ends: 14712 [2022-07-14 00:16:25,748 INFO L226 Difference]: Without dead ends: 9157 [2022-07-14 00:16:25,762 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 [2022-07-14 00:16:25,764 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 1619 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 1846 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 2915 SdHoareTripleChecker+Invalid, 2497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 1846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-14 00:16:25,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1696 Valid, 2915 Invalid, 2497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 1846 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-14 00:16:25,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9157 states. [2022-07-14 00:16:25,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9157 to 8330. [2022-07-14 00:16:26,012 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) [2022-07-14 00:16:26,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8330 states to 8330 states and 11483 transitions. [2022-07-14 00:16:26,085 INFO L78 Accepts]: Start accepts. Automaton has 8330 states and 11483 transitions. Word has length 151 [2022-07-14 00:16:26,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:16:26,086 INFO L495 AbstractCegarLoop]: Abstraction has 8330 states and 11483 transitions. [2022-07-14 00:16:26,087 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) [2022-07-14 00:16:26,087 INFO L276 IsEmpty]: Start isEmpty. Operand 8330 states and 11483 transitions. [2022-07-14 00:16:26,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-14 00:16:26,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:16:26,097 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] [2022-07-14 00:16:26,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-14 00:16:26,098 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:16:26,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:16:26,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1373098194, now seen corresponding path program 1 times [2022-07-14 00:16:26,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:16:26,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370320252] [2022-07-14 00:16:26,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:16:26,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:16:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:26,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:16:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:26,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:16:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:26,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:16:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:26,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:16:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:26,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:16:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:26,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:16:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:26,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:16:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:26,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:16:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:26,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:16:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:26,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:16:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:26,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-14 00:16:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:26,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:16:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:26,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-14 00:16:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:26,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:26,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 00:16:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:26,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:16:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:26,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:26,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-14 00:16:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:26,304 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-07-14 00:16:26,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:16:26,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370320252] [2022-07-14 00:16:26,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370320252] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:16:26,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:16:26,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 00:16:26,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876504714] [2022-07-14 00:16:26,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:16:26,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 00:16:26,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:16:26,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 00:16:26,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:16:26,307 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) [2022-07-14 00:16:27,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:16:27,771 INFO L93 Difference]: Finished difference Result 13560 states and 19023 transitions. [2022-07-14 00:16:27,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 00:16:27,772 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 [2022-07-14 00:16:27,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:16:27,807 INFO L225 Difference]: With dead ends: 13560 [2022-07-14 00:16:27,808 INFO L226 Difference]: Without dead ends: 9164 [2022-07-14 00:16:27,824 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 [2022-07-14 00:16:27,825 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 530 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 2833 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-14 00:16:27,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 2833 Invalid, 1636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-14 00:16:27,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9164 states. [2022-07-14 00:16:28,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9164 to 8350. [2022-07-14 00:16:28,124 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) [2022-07-14 00:16:28,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8350 states to 8350 states and 11503 transitions. [2022-07-14 00:16:28,142 INFO L78 Accepts]: Start accepts. Automaton has 8350 states and 11503 transitions. Word has length 156 [2022-07-14 00:16:28,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:16:28,142 INFO L495 AbstractCegarLoop]: Abstraction has 8350 states and 11503 transitions. [2022-07-14 00:16:28,142 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) [2022-07-14 00:16:28,143 INFO L276 IsEmpty]: Start isEmpty. Operand 8350 states and 11503 transitions. [2022-07-14 00:16:28,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-14 00:16:28,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:16:28,154 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] [2022-07-14 00:16:28,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-14 00:16:28,155 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:16:28,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:16:28,155 INFO L85 PathProgramCache]: Analyzing trace with hash 554198863, now seen corresponding path program 1 times [2022-07-14 00:16:28,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:16:28,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364489203] [2022-07-14 00:16:28,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:16:28,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:16:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:28,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:16:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:28,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:16:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:28,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:16:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:28,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:16:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:28,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:16:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:28,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:16:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:28,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:16:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:28,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:16:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:28,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:16:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:28,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:16:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:28,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-14 00:16:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:28,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:16:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:28,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-14 00:16:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:28,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:28,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 00:16:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:28,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:16:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:28,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:28,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:16:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:28,445 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-07-14 00:16:28,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:16:28,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364489203] [2022-07-14 00:16:28,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364489203] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:16:28,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:16:28,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-14 00:16:28,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460841311] [2022-07-14 00:16:28,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:16:28,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 00:16:28,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:16:28,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 00:16:28,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-14 00:16:28,448 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) [2022-07-14 00:16:31,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:16:31,542 INFO L93 Difference]: Finished difference Result 18695 states and 25902 transitions. [2022-07-14 00:16:31,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-14 00:16:31,542 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 [2022-07-14 00:16:31,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:16:31,576 INFO L225 Difference]: With dead ends: 18695 [2022-07-14 00:16:31,576 INFO L226 Difference]: Without dead ends: 10380 [2022-07-14 00:16:31,596 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 [2022-07-14 00:16:31,597 INFO L413 NwaCegarLoop]: 965 mSDtfsCounter, 3198 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 3343 mSolverCounterSat, 1727 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3287 SdHoareTripleChecker+Valid, 3676 SdHoareTripleChecker+Invalid, 5070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1727 IncrementalHoareTripleChecker+Valid, 3343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-14 00:16:31,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3287 Valid, 3676 Invalid, 5070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1727 Valid, 3343 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-14 00:16:31,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10380 states. [2022-07-14 00:16:31,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10380 to 8726. [2022-07-14 00:16:31,876 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) [2022-07-14 00:16:31,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8726 states to 8726 states and 11885 transitions. [2022-07-14 00:16:31,896 INFO L78 Accepts]: Start accepts. Automaton has 8726 states and 11885 transitions. Word has length 158 [2022-07-14 00:16:31,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:16:31,896 INFO L495 AbstractCegarLoop]: Abstraction has 8726 states and 11885 transitions. [2022-07-14 00:16:31,897 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) [2022-07-14 00:16:31,897 INFO L276 IsEmpty]: Start isEmpty. Operand 8726 states and 11885 transitions. [2022-07-14 00:16:31,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-14 00:16:31,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:16:31,910 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] [2022-07-14 00:16:31,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-14 00:16:31,910 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:16:31,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:16:31,911 INFO L85 PathProgramCache]: Analyzing trace with hash -3224619, now seen corresponding path program 1 times [2022-07-14 00:16:31,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:16:31,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556786076] [2022-07-14 00:16:31,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:16:31,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:16:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:32,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:16:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:32,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:16:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:32,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:16:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:32,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:16:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:32,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:16:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:32,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:16:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:32,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:16:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:32,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:16:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:32,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:16:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:32,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:16:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:32,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-14 00:16:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:32,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:16:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:32,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-14 00:16:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:32,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:32,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-14 00:16:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:32,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-14 00:16:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:32,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:32,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:32,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-14 00:16:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:32,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:32,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-14 00:16:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:32,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:32,192 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-07-14 00:16:32,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:16:32,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556786076] [2022-07-14 00:16:32,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556786076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:16:32,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:16:32,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 00:16:32,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088381642] [2022-07-14 00:16:32,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:16:32,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 00:16:32,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:16:32,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 00:16:32,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-14 00:16:32,195 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) [2022-07-14 00:16:33,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:16:33,764 INFO L93 Difference]: Finished difference Result 18475 states and 25394 transitions. [2022-07-14 00:16:33,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 00:16:33,765 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 [2022-07-14 00:16:33,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:16:33,793 INFO L225 Difference]: With dead ends: 18475 [2022-07-14 00:16:33,794 INFO L226 Difference]: Without dead ends: 9784 [2022-07-14 00:16:33,814 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 [2022-07-14 00:16:33,816 INFO L413 NwaCegarLoop]: 840 mSDtfsCounter, 426 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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 [2022-07-14 00:16:33,816 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] [2022-07-14 00:16:33,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9784 states. [2022-07-14 00:16:34,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9784 to 8790. [2022-07-14 00:16:34,048 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) [2022-07-14 00:16:34,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8790 states to 8790 states and 11957 transitions. [2022-07-14 00:16:34,068 INFO L78 Accepts]: Start accepts. Automaton has 8790 states and 11957 transitions. Word has length 193 [2022-07-14 00:16:34,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:16:34,068 INFO L495 AbstractCegarLoop]: Abstraction has 8790 states and 11957 transitions. [2022-07-14 00:16:34,068 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) [2022-07-14 00:16:34,068 INFO L276 IsEmpty]: Start isEmpty. Operand 8790 states and 11957 transitions. [2022-07-14 00:16:34,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-14 00:16:34,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:16:34,080 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] [2022-07-14 00:16:34,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-14 00:16:34,081 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:16:34,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:16:34,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1088928772, now seen corresponding path program 1 times [2022-07-14 00:16:34,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:16:34,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998583188] [2022-07-14 00:16:34,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:16:34,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:16:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:16:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:16:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:16:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:16:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:16:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:16:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:16:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:16:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:16:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:16:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-14 00:16:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:16:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-14 00:16:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-14 00:16:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-14 00:16:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-14 00:16:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:16:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-14 00:16:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:34,298 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-07-14 00:16:34,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:16:34,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998583188] [2022-07-14 00:16:34,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998583188] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:16:34,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:16:34,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:16:34,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46699774] [2022-07-14 00:16:34,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:16:34,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:16:34,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:16:34,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:16:34,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:16:34,301 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) [2022-07-14 00:16:36,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:16:36,441 INFO L93 Difference]: Finished difference Result 22136 states and 30222 transitions. [2022-07-14 00:16:36,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 00:16:36,444 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 [2022-07-14 00:16:36,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:16:36,485 INFO L225 Difference]: With dead ends: 22136 [2022-07-14 00:16:36,485 INFO L226 Difference]: Without dead ends: 13381 [2022-07-14 00:16:36,504 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 [2022-07-14 00:16:36,505 INFO L413 NwaCegarLoop]: 1442 mSDtfsCounter, 1149 mSDsluCounter, 2433 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 3875 SdHoareTripleChecker+Invalid, 2383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-14 00:16:36,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 3875 Invalid, 2383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 2022 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-14 00:16:36,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13381 states. [2022-07-14 00:16:36,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13381 to 8806. [2022-07-14 00:16:36,834 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) [2022-07-14 00:16:36,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8806 states to 8806 states and 11973 transitions. [2022-07-14 00:16:36,858 INFO L78 Accepts]: Start accepts. Automaton has 8806 states and 11973 transitions. Word has length 215 [2022-07-14 00:16:36,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:16:36,860 INFO L495 AbstractCegarLoop]: Abstraction has 8806 states and 11973 transitions. [2022-07-14 00:16:36,860 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) [2022-07-14 00:16:36,860 INFO L276 IsEmpty]: Start isEmpty. Operand 8806 states and 11973 transitions. [2022-07-14 00:16:36,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-14 00:16:36,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:16:36,876 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] [2022-07-14 00:16:36,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-14 00:16:36,876 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:16:36,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:16:36,877 INFO L85 PathProgramCache]: Analyzing trace with hash 2069474836, now seen corresponding path program 1 times [2022-07-14 00:16:36,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:16:36,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166673270] [2022-07-14 00:16:36,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:16:36,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:16:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:36,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:16:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:36,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:16:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:36,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:16:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:36,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:16:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:36,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:16:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:36,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:16:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:36,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:16:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:36,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:16:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:36,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:16:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:37,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:16:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:37,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-14 00:16:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:37,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:16:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:37,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-14 00:16:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:37,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:37,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-14 00:16:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:37,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-14 00:16:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:37,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:37,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:37,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:16:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:37,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-14 00:16:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:37,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:37,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-14 00:16:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:37,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:37,143 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2022-07-14 00:16:37,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:16:37,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166673270] [2022-07-14 00:16:37,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166673270] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:16:37,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566992275] [2022-07-14 00:16:37,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:16:37,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:16:37,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:16:37,145 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) [2022-07-14 00:16:37,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-14 00:16:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:37,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 1400 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-14 00:16:37,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:16:37,712 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 98 proven. 8 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2022-07-14 00:16:37,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:16:38,062 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-07-14 00:16:38,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566992275] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:16:38,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 00:16:38,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 9] total 20 [2022-07-14 00:16:38,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90743597] [2022-07-14 00:16:38,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 00:16:38,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-14 00:16:38,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:16:38,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-14 00:16:38,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-07-14 00:16:38,065 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) [2022-07-14 00:16:45,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:16:45,185 INFO L93 Difference]: Finished difference Result 31956 states and 44216 transitions. [2022-07-14 00:16:45,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-14 00:16:45,186 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 [2022-07-14 00:16:45,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:16:45,343 INFO L225 Difference]: With dead ends: 31956 [2022-07-14 00:16:45,344 INFO L226 Difference]: Without dead ends: 27104 [2022-07-14 00:16:45,359 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 [2022-07-14 00:16:45,360 INFO L413 NwaCegarLoop]: 1615 mSDtfsCounter, 9466 mSDsluCounter, 5843 mSDsCounter, 0 mSdLazyCounter, 7738 mSolverCounterSat, 4418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9740 SdHoareTripleChecker+Valid, 7458 SdHoareTripleChecker+Invalid, 12156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4418 IncrementalHoareTripleChecker+Valid, 7738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-07-14 00:16:45,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9740 Valid, 7458 Invalid, 12156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4418 Valid, 7738 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-07-14 00:16:45,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27104 states. [2022-07-14 00:16:46,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27104 to 24845. [2022-07-14 00:16:46,229 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) [2022-07-14 00:16:46,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24845 states to 24845 states and 34183 transitions. [2022-07-14 00:16:46,304 INFO L78 Accepts]: Start accepts. Automaton has 24845 states and 34183 transitions. Word has length 200 [2022-07-14 00:16:46,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:16:46,304 INFO L495 AbstractCegarLoop]: Abstraction has 24845 states and 34183 transitions. [2022-07-14 00:16:46,304 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) [2022-07-14 00:16:46,305 INFO L276 IsEmpty]: Start isEmpty. Operand 24845 states and 34183 transitions. [2022-07-14 00:16:46,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-14 00:16:46,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:16:46,317 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] [2022-07-14 00:16:46,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-14 00:16:46,526 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 [2022-07-14 00:16:46,527 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:16:46,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:16:46,528 INFO L85 PathProgramCache]: Analyzing trace with hash -872421549, now seen corresponding path program 1 times [2022-07-14 00:16:46,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:16:46,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930502074] [2022-07-14 00:16:46,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:16:46,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:16:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:16:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:16:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:16:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:16:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:16:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:16:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:16:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:16:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:16:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:16:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-14 00:16:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:16:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-14 00:16:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-14 00:16:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-14 00:16:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:16:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-14 00:16:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-14 00:16:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:46,696 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-07-14 00:16:46,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:16:46,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930502074] [2022-07-14 00:16:46,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930502074] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:16:46,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:16:46,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 00:16:46,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108773650] [2022-07-14 00:16:46,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:16:46,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 00:16:46,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:16:46,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 00:16:46,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:16:46,698 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) [2022-07-14 00:16:48,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:16:48,466 INFO L93 Difference]: Finished difference Result 47218 states and 65947 transitions. [2022-07-14 00:16:48,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 00:16:48,467 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 [2022-07-14 00:16:48,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:16:48,556 INFO L225 Difference]: With dead ends: 47218 [2022-07-14 00:16:48,557 INFO L226 Difference]: Without dead ends: 26319 [2022-07-14 00:16:48,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-14 00:16:48,602 INFO L413 NwaCegarLoop]: 840 mSDtfsCounter, 443 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-14 00:16:48,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 2690 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-14 00:16:48,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26319 states. [2022-07-14 00:16:49,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26319 to 24829. [2022-07-14 00:16:49,574 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) [2022-07-14 00:16:49,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24829 states to 24829 states and 34109 transitions. [2022-07-14 00:16:49,652 INFO L78 Accepts]: Start accepts. Automaton has 24829 states and 34109 transitions. Word has length 202 [2022-07-14 00:16:49,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:16:49,653 INFO L495 AbstractCegarLoop]: Abstraction has 24829 states and 34109 transitions. [2022-07-14 00:16:49,653 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) [2022-07-14 00:16:49,653 INFO L276 IsEmpty]: Start isEmpty. Operand 24829 states and 34109 transitions. [2022-07-14 00:16:49,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-07-14 00:16:49,666 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:16:49,667 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] [2022-07-14 00:16:49,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-14 00:16:49,667 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:16:49,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:16:49,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1114922220, now seen corresponding path program 1 times [2022-07-14 00:16:49,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:16:49,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121445943] [2022-07-14 00:16:49,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:16:49,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:16:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:16:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:16:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:16:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:16:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:16:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:16:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:16:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:16:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:16:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:16:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-14 00:16:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:16:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-14 00:16:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-14 00:16:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-14 00:16:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:16:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-14 00:16:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-14 00:16:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:49,846 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-07-14 00:16:49,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:16:49,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121445943] [2022-07-14 00:16:49,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121445943] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:16:49,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:16:49,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 00:16:49,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719793974] [2022-07-14 00:16:49,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:16:49,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 00:16:49,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:16:49,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 00:16:49,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:16:49,848 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) [2022-07-14 00:16:52,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:16:52,366 INFO L93 Difference]: Finished difference Result 66761 states and 96168 transitions. [2022-07-14 00:16:52,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 00:16:52,367 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 [2022-07-14 00:16:52,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:16:52,674 INFO L225 Difference]: With dead ends: 66761 [2022-07-14 00:16:52,674 INFO L226 Difference]: Without dead ends: 41967 [2022-07-14 00:16:52,719 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 [2022-07-14 00:16:52,720 INFO L413 NwaCegarLoop]: 1410 mSDtfsCounter, 1366 mSDsluCounter, 3004 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.5s IncrementalHoareTripleChecker+Time [2022-07-14 00:16:52,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 4414 Invalid, 2045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-14 00:16:52,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41967 states. [2022-07-14 00:16:53,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41967 to 24889. [2022-07-14 00:16:53,750 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) [2022-07-14 00:16:53,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24889 states to 24889 states and 34169 transitions. [2022-07-14 00:16:53,821 INFO L78 Accepts]: Start accepts. Automaton has 24889 states and 34169 transitions. Word has length 204 [2022-07-14 00:16:53,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:16:53,822 INFO L495 AbstractCegarLoop]: Abstraction has 24889 states and 34169 transitions. [2022-07-14 00:16:53,822 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) [2022-07-14 00:16:53,822 INFO L276 IsEmpty]: Start isEmpty. Operand 24889 states and 34169 transitions. [2022-07-14 00:16:53,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-14 00:16:53,837 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:16:53,838 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] [2022-07-14 00:16:53,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-14 00:16:53,838 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:16:53,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:16:53,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1099484298, now seen corresponding path program 1 times [2022-07-14 00:16:53,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:16:53,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752322582] [2022-07-14 00:16:53,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:16:53,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:16:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:16:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:16:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:16:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:16:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:16:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:16:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:16:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:16:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:16:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:16:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-14 00:16:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:16:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-14 00:16:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-14 00:16:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-14 00:16:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:16:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-14 00:16:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-14 00:16:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-14 00:16:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:54,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:54,146 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-07-14 00:16:54,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:16:54,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752322582] [2022-07-14 00:16:54,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752322582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:16:54,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:16:54,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 00:16:54,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148322275] [2022-07-14 00:16:54,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:16:54,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 00:16:54,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:16:54,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 00:16:54,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-14 00:16:54,149 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) [2022-07-14 00:16:55,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:16:55,832 INFO L93 Difference]: Finished difference Result 38316 states and 52807 transitions. [2022-07-14 00:16:55,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 00:16:55,840 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 [2022-07-14 00:16:55,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:16:55,880 INFO L225 Difference]: With dead ends: 38316 [2022-07-14 00:16:55,881 INFO L226 Difference]: Without dead ends: 13432 [2022-07-14 00:16:55,929 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 [2022-07-14 00:16:55,931 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 657 mSDsluCounter, 2377 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 3220 SdHoareTripleChecker+Invalid, 2042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-14 00:16:55,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 3220 Invalid, 2042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-14 00:16:55,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13432 states. [2022-07-14 00:16:56,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13432 to 12493. [2022-07-14 00:16:56,632 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) [2022-07-14 00:16:56,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12493 states to 12493 states and 17189 transitions. [2022-07-14 00:16:56,668 INFO L78 Accepts]: Start accepts. Automaton has 12493 states and 17189 transitions. Word has length 208 [2022-07-14 00:16:56,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:16:56,669 INFO L495 AbstractCegarLoop]: Abstraction has 12493 states and 17189 transitions. [2022-07-14 00:16:56,669 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) [2022-07-14 00:16:56,669 INFO L276 IsEmpty]: Start isEmpty. Operand 12493 states and 17189 transitions. [2022-07-14 00:16:56,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-14 00:16:56,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:16:56,676 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] [2022-07-14 00:16:56,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-14 00:16:56,676 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:16:56,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:16:56,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1517373000, now seen corresponding path program 1 times [2022-07-14 00:16:56,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:16:56,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690153634] [2022-07-14 00:16:56,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:16:56,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:16:56,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:56,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:16:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:56,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:16:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:56,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:16:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:56,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:16:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:56,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:16:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:56,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:16:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:56,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:16:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:56,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:16:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:56,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:16:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:57,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:16:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:57,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-14 00:16:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:57,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:16:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:57,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-14 00:16:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:57,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:57,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-14 00:16:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:57,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-14 00:16:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:57,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:57,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:57,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:16:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:57,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-14 00:16:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:57,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:57,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-14 00:16:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:57,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-14 00:16:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:57,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:57,779 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 48 proven. 13 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2022-07-14 00:16:57,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:16:57,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690153634] [2022-07-14 00:16:57,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690153634] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:16:57,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517547860] [2022-07-14 00:16:57,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:16:57,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:16:57,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:16:57,781 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) [2022-07-14 00:16:57,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-14 00:16:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:58,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 1415 conjuncts, 62 conjunts are in the unsatisfiable core [2022-07-14 00:16:58,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:16:58,740 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-07-14 00:16:58,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:16:58,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517547860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:16:58,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:16:58,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [33] total 41 [2022-07-14 00:16:58,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189132312] [2022-07-14 00:16:58,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:16:58,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-14 00:16:58,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:16:58,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-14 00:16:58,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1538, Unknown=0, NotChecked=0, Total=1640 [2022-07-14 00:16:58,742 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) [2022-07-14 00:16:59,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:16:59,646 INFO L93 Difference]: Finished difference Result 29309 states and 41475 transitions. [2022-07-14 00:16:59,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-14 00:16:59,646 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 [2022-07-14 00:16:59,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:16:59,697 INFO L225 Difference]: With dead ends: 29309 [2022-07-14 00:16:59,697 INFO L226 Difference]: Without dead ends: 16866 [2022-07-14 00:16:59,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 241 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=129, Invalid=1941, Unknown=0, NotChecked=0, Total=2070 [2022-07-14 00:16:59,728 INFO L413 NwaCegarLoop]: 1369 mSDtfsCounter, 375 mSDsluCounter, 17290 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 18659 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 [2022-07-14 00:16:59,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 18659 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 00:16:59,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16866 states. [2022-07-14 00:17:00,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16866 to 12583. [2022-07-14 00:17:00,382 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) [2022-07-14 00:17:00,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12583 states to 12583 states and 17267 transitions. [2022-07-14 00:17:00,412 INFO L78 Accepts]: Start accepts. Automaton has 12583 states and 17267 transitions. Word has length 208 [2022-07-14 00:17:00,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:00,413 INFO L495 AbstractCegarLoop]: Abstraction has 12583 states and 17267 transitions. [2022-07-14 00:17:00,413 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) [2022-07-14 00:17:00,413 INFO L276 IsEmpty]: Start isEmpty. Operand 12583 states and 17267 transitions. [2022-07-14 00:17:00,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-14 00:17:00,418 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:00,418 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] [2022-07-14 00:17:00,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-14 00:17:00,621 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 [2022-07-14 00:17:00,623 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:00,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:00,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1833099563, now seen corresponding path program 1 times [2022-07-14 00:17:00,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:17:00,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471122590] [2022-07-14 00:17:00,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:00,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:17:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:17:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:17:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:17:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:17:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:17:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:17:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:17:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:17:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:17:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-14 00:17:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:17:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-14 00:17:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-14 00:17:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-14 00:17:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-14 00:17:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-14 00:17:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-14 00:17:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:00,794 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-07-14 00:17:00,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:17:00,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471122590] [2022-07-14 00:17:00,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471122590] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:17:00,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33928000] [2022-07-14 00:17:00,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:00,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:17:00,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:17:00,796 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) [2022-07-14 00:17:00,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-14 00:17:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 1518 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 00:17:01,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:17:01,177 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-07-14 00:17:01,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:17:01,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33928000] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:01,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:17:01,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-07-14 00:17:01,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329589452] [2022-07-14 00:17:01,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:01,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:17:01,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:17:01,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:17:01,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-14 00:17:01,178 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) [2022-07-14 00:17:02,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:02,162 INFO L93 Difference]: Finished difference Result 31184 states and 42945 transitions. [2022-07-14 00:17:02,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 00:17:02,163 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 [2022-07-14 00:17:02,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:02,201 INFO L225 Difference]: With dead ends: 31184 [2022-07-14 00:17:02,201 INFO L226 Difference]: Without dead ends: 18651 [2022-07-14 00:17:02,216 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 [2022-07-14 00:17:02,217 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, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:02,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1400 Valid, 5353 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 00:17:02,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18651 states. [2022-07-14 00:17:02,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18651 to 12593. [2022-07-14 00:17:02,724 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) [2022-07-14 00:17:02,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12593 states to 12593 states and 17277 transitions. [2022-07-14 00:17:02,753 INFO L78 Accepts]: Start accepts. Automaton has 12593 states and 17277 transitions. Word has length 226 [2022-07-14 00:17:02,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:02,753 INFO L495 AbstractCegarLoop]: Abstraction has 12593 states and 17277 transitions. [2022-07-14 00:17:02,754 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) [2022-07-14 00:17:02,754 INFO L276 IsEmpty]: Start isEmpty. Operand 12593 states and 17277 transitions. [2022-07-14 00:17:02,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-14 00:17:02,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:02,758 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] [2022-07-14 00:17:02,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-14 00:17:02,958 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 [2022-07-14 00:17:02,959 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:02,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:02,959 INFO L85 PathProgramCache]: Analyzing trace with hash -670216187, now seen corresponding path program 1 times [2022-07-14 00:17:02,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:17:02,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257883403] [2022-07-14 00:17:02,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:02,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:17:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:17:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:17:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:17:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:17:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:17:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:17:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:17:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:17:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:17:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-14 00:17:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:17:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-14 00:17:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-14 00:17:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-14 00:17:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-14 00:17:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-14 00:17:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-14 00:17:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-14 00:17:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-14 00:17:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-14 00:17:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:03,414 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2022-07-14 00:17:03,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:17:03,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257883403] [2022-07-14 00:17:03,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257883403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:03,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:03,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-14 00:17:03,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288741918] [2022-07-14 00:17:03,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:03,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-14 00:17:03,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:17:03,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-14 00:17:03,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2022-07-14 00:17:03,416 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) [2022-07-14 00:17:08,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:08,586 INFO L93 Difference]: Finished difference Result 34036 states and 49217 transitions. [2022-07-14 00:17:08,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-14 00:17:08,587 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 [2022-07-14 00:17:08,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:08,643 INFO L225 Difference]: With dead ends: 34036 [2022-07-14 00:17:08,644 INFO L226 Difference]: Without dead ends: 21493 [2022-07-14 00:17:08,672 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 [2022-07-14 00:17:08,672 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 1752 mSDsluCounter, 12752 mSDsCounter, 0 mSdLazyCounter, 7677 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1869 SdHoareTripleChecker+Valid, 14107 SdHoareTripleChecker+Invalid, 8329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 7677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:08,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1869 Valid, 14107 Invalid, 8329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 7677 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-14 00:17:08,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21493 states. [2022-07-14 00:17:09,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21493 to 12673. [2022-07-14 00:17:09,517 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) [2022-07-14 00:17:09,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12673 states to 12673 states and 17374 transitions. [2022-07-14 00:17:09,551 INFO L78 Accepts]: Start accepts. Automaton has 12673 states and 17374 transitions. Word has length 237 [2022-07-14 00:17:09,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:09,552 INFO L495 AbstractCegarLoop]: Abstraction has 12673 states and 17374 transitions. [2022-07-14 00:17:09,552 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) [2022-07-14 00:17:09,552 INFO L276 IsEmpty]: Start isEmpty. Operand 12673 states and 17374 transitions. [2022-07-14 00:17:09,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-14 00:17:09,558 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:09,558 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] [2022-07-14 00:17:09,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-14 00:17:09,558 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:09,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:09,559 INFO L85 PathProgramCache]: Analyzing trace with hash -944975801, now seen corresponding path program 1 times [2022-07-14 00:17:09,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:17:09,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192160914] [2022-07-14 00:17:09,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:09,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:17:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 00:17:10,076 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 00:17:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 00:17:10,510 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 00:17:10,511 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-14 00:17:10,512 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-14 00:17:10,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-14 00:17:10,516 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:17:10,519 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-14 00:17:10,561 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-14 00:17:10,562 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-14 00:17:10,562 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-14 00:17:10,562 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-14 00:17:10,563 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-14 00:17:10,563 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-14 00:17:10,563 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-14 00:17:10,563 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-14 00:17:10,563 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-14 00:17:10,563 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-14 00:17:10,570 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == dest.base && #res.offset == dest.offset; is not ensure(true) [2022-07-14 00:17:10,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 12:17:10 BoogieIcfgContainer [2022-07-14 00:17:10,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-14 00:17:10,744 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 00:17:10,744 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 00:17:10,744 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 00:17:10,745 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:16:15" (3/4) ... [2022-07-14 00:17:10,761 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-14 00:17:10,761 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 00:17:10,761 INFO L158 Benchmark]: Toolchain (without parser) took 58617.47ms. Allocated memory was 125.8MB in the beginning and 3.9GB in the end (delta: 3.7GB). Free memory was 82.6MB in the beginning and 3.2GB in the end (delta: -3.1GB). Peak memory consumption was 584.5MB. Max. memory is 16.1GB. [2022-07-14 00:17:10,762 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 79.7MB. Free memory was 35.5MB in the beginning and 35.5MB in the end (delta: 36.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 00:17:10,762 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1230.51ms. Allocated memory was 125.8MB in the beginning and 153.1MB in the end (delta: 27.3MB). Free memory was 82.4MB in the beginning and 58.5MB in the end (delta: 23.9MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. [2022-07-14 00:17:10,762 INFO L158 Benchmark]: Boogie Procedure Inliner took 152.03ms. Allocated memory is still 153.1MB. Free memory was 58.5MB in the beginning and 102.5MB in the end (delta: -44.0MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2022-07-14 00:17:10,763 INFO L158 Benchmark]: Boogie Preprocessor took 91.13ms. Allocated memory is still 153.1MB. Free memory was 102.5MB in the beginning and 92.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-14 00:17:10,763 INFO L158 Benchmark]: RCFGBuilder took 1446.57ms. Allocated memory is still 153.1MB. Free memory was 92.1MB in the beginning and 74.6MB in the end (delta: 17.4MB). Peak memory consumption was 53.0MB. Max. memory is 16.1GB. [2022-07-14 00:17:10,763 INFO L158 Benchmark]: TraceAbstraction took 55674.40ms. Allocated memory was 153.1MB in the beginning and 3.9GB in the end (delta: 3.7GB). Free memory was 73.7MB in the beginning and 3.2GB in the end (delta: -3.2GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2022-07-14 00:17:10,763 INFO L158 Benchmark]: Witness Printer took 16.68ms. Allocated memory is still 3.9GB. Free memory is still 3.2GB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 00:17:10,768 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 79.7MB. Free memory was 35.5MB in the beginning and 35.5MB in the end (delta: 36.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1230.51ms. Allocated memory was 125.8MB in the beginning and 153.1MB in the end (delta: 27.3MB). Free memory was 82.4MB in the beginning and 58.5MB in the end (delta: 23.9MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 152.03ms. Allocated memory is still 153.1MB. Free memory was 58.5MB in the beginning and 102.5MB in the end (delta: -44.0MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 91.13ms. Allocated memory is still 153.1MB. Free memory was 102.5MB in the beginning and 92.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 1446.57ms. Allocated memory is still 153.1MB. Free memory was 92.1MB in the beginning and 74.6MB in the end (delta: 17.4MB). Peak memory consumption was 53.0MB. Max. memory is 16.1GB. * TraceAbstraction took 55674.40ms. Allocated memory was 153.1MB in the beginning and 3.9GB in the end (delta: 3.7GB). Free memory was 73.7MB in the beginning and 3.2GB in the end (delta: -3.2GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. * Witness Printer took 16.68ms. Allocated memory is still 3.9GB. Free memory is still 3.2GB. 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={-18446744073709551615:0}, skb={0:0}, 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={-18446744073709551615:0}, skb={0:0}, 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={-18446744073709551615:0}, skb={0:0}, 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={-18446744073709551615:0}, skb={0:0}, 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: 55.4s, OverallIterations: 17, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 38.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28697 SdHoareTripleChecker+Valid, 27.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27551 mSDsluCounter, 82676 SdHoareTripleChecker+Invalid, 23.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 64548 mSDsCounter, 11629 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35288 IncrementalHoareTripleChecker+Invalid, 46917 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11629 mSolverCounterUnsat, 18128 mSDtfsCounter, 35288 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, 2.7s 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: 8.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 51055 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 5.1s 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 [2022-07-14 00:17:10,792 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-?-f4b24e3 [2022-07-14 00:17:12,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 00:17:12,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 00:17:12,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 00:17:12,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 00:17:12,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 00:17:12,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 00:17:12,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 00:17:12,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 00:17:12,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 00:17:12,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 00:17:12,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 00:17:12,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 00:17:12,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 00:17:12,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 00:17:12,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 00:17:12,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 00:17:12,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 00:17:12,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 00:17:12,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 00:17:12,673 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 00:17:12,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 00:17:12,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 00:17:12,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 00:17:12,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 00:17:12,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 00:17:12,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 00:17:12,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 00:17:12,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 00:17:12,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 00:17:12,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 00:17:12,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 00:17:12,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 00:17:12,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 00:17:12,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 00:17:12,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 00:17:12,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 00:17:12,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 00:17:12,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 00:17:12,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 00:17:12,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 00:17:12,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 00:17:12,693 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-14 00:17:12,719 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 00:17:12,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 00:17:12,720 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 00:17:12,720 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 00:17:12,721 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 00:17:12,721 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 00:17:12,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 00:17:12,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 00:17:12,722 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 00:17:12,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 00:17:12,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 00:17:12,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 00:17:12,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 00:17:12,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 00:17:12,723 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-14 00:17:12,724 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-14 00:17:12,724 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-14 00:17:12,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 00:17:12,724 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 00:17:12,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 00:17:12,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 00:17:12,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 00:17:12,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 00:17:12,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:17:12,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 00:17:12,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 00:17:12,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 00:17:12,725 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-14 00:17:12,726 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-14 00:17:12,726 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 00:17:12,726 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 00:17:12,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 00:17:12,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-14 00:17:12,726 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 389f662f7096bd36438270dc54f296be4073de8eeb864b893c17044d6fb4cc06 [2022-07-14 00:17:12,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 00:17:12,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 00:17:12,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 00:17:12,989 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 00:17:12,990 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 00:17:12,991 INFO L432 ainManager$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 [2022-07-14 00:17:13,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c06212e87/f5be105158e34b3dbe229146b2b86fa3/FLAGb9493c517 [2022-07-14 00:17:13,645 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 00:17:13,646 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 [2022-07-14 00:17:13,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c06212e87/f5be105158e34b3dbe229146b2b86fa3/FLAGb9493c517 [2022-07-14 00:17:14,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c06212e87/f5be105158e34b3dbe229146b2b86fa3 [2022-07-14 00:17:14,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 00:17:14,066 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 00:17:14,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 00:17:14,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 00:17:14,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 00:17:14,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:17:14" (1/1) ... [2022-07-14 00:17:14,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@708e1d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:14, skipping insertion in model container [2022-07-14 00:17:14,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:17:14" (1/1) ... [2022-07-14 00:17:14,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 00:17:14,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 00:17:14,696 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] [2022-07-14 00:17:14,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:17:14,912 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-14 00:17:14,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 00:17:15,095 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] [2022-07-14 00:17:15,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:17:15,181 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 00:17:15,300 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] [2022-07-14 00:17:15,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:17:15,416 INFO L208 MainTranslator]: Completed translation [2022-07-14 00:17:15,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:15 WrapperNode [2022-07-14 00:17:15,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 00:17:15,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 00:17:15,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 00:17:15,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 00:17:15,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:15" (1/1) ... [2022-07-14 00:17:15,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:15" (1/1) ... [2022-07-14 00:17:15,537 INFO L137 Inliner]: procedures = 190, calls = 448, calls flagged for inlining = 92, calls inlined = 85, statements flattened = 1716 [2022-07-14 00:17:15,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 00:17:15,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 00:17:15,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 00:17:15,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 00:17:15,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:15" (1/1) ... [2022-07-14 00:17:15,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:15" (1/1) ... [2022-07-14 00:17:15,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:15" (1/1) ... [2022-07-14 00:17:15,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:15" (1/1) ... [2022-07-14 00:17:15,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:15" (1/1) ... [2022-07-14 00:17:15,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:15" (1/1) ... [2022-07-14 00:17:15,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:15" (1/1) ... [2022-07-14 00:17:15,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 00:17:15,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 00:17:15,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 00:17:15,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 00:17:15,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:15" (1/1) ... [2022-07-14 00:17:15,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:17:15,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:17:15,687 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) [2022-07-14 00:17:15,702 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 [2022-07-14 00:17:15,718 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-14 00:17:15,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-14 00:17:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_15 [2022-07-14 00:17:15,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_15 [2022-07-14 00:17:15,720 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_poll [2022-07-14 00:17:15,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_poll [2022-07-14 00:17:15,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-14 00:17:15,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-14 00:17:15,720 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-07-14 00:17:15,720 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-07-14 00:17:15,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-14 00:17:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-14 00:17:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-14 00:17:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-14 00:17:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-14 00:17:15,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-14 00:17:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-07-14 00:17:15,721 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-07-14 00:17:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2022-07-14 00:17:15,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2022-07-14 00:17:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-14 00:17:15,722 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-14 00:17:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-07-14 00:17:15,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-07-14 00:17:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-14 00:17:15,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-14 00:17:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure spin_trylock_bh [2022-07-14 00:17:15,722 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_trylock_bh [2022-07-14 00:17:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-14 00:17:15,723 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-14 00:17:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-07-14 00:17:15,723 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-07-14 00:17:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-14 00:17:15,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-14 00:17:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_synctty_ioctl [2022-07-14 00:17:15,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_synctty_ioctl [2022-07-14 00:17:15,724 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-14 00:17:15,724 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-14 00:17:15,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-14 00:17:15,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-14 00:17:15,724 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-07-14 00:17:15,724 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-07-14 00:17:15,725 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_close [2022-07-14 00:17:15,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_close [2022-07-14 00:17:15,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-14 00:17:15,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-14 00:17:15,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-14 00:17:15,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-14 00:17:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-14 00:17:15,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-14 00:17:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-14 00:17:15,726 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-14 00:17:15,727 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_print_buffer [2022-07-14 00:17:15,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_print_buffer [2022-07-14 00:17:15,727 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-14 00:17:15,728 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-14 00:17:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 00:17:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-07-14 00:17:15,728 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-07-14 00:17:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-14 00:17:15,728 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-14 00:17:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 00:17:15,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 00:17:15,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 00:17:15,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-14 00:17:15,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-14 00:17:15,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-14 00:17:15,729 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-07-14 00:17:15,730 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-07-14 00:17:15,730 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-07-14 00:17:15,730 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-07-14 00:17:15,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 00:17:15,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-07-14 00:17:15,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-07-14 00:17:15,730 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-07-14 00:17:15,730 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-07-14 00:17:15,731 INFO L130 BoogieDeclarations]: Found specification of procedure sp_put [2022-07-14 00:17:15,731 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_put [2022-07-14 00:17:15,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-14 00:17:15,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-14 00:17:15,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 00:17:15,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-14 00:17:15,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-14 00:17:15,732 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-07-14 00:17:15,732 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-07-14 00:17:15,732 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_hangup [2022-07-14 00:17:15,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_hangup [2022-07-14 00:17:15,733 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-14 00:17:15,733 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-14 00:17:15,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-14 00:17:15,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-14 00:17:15,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-14 00:17:15,733 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-14 00:17:15,733 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-14 00:17:15,733 INFO L130 BoogieDeclarations]: Found specification of procedure sp_get [2022-07-14 00:17:15,733 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_get [2022-07-14 00:17:15,734 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-14 00:17:15,734 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-14 00:17:15,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-14 00:17:15,734 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-07-14 00:17:15,734 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-07-14 00:17:15,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-14 00:17:15,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-14 00:17:15,734 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-14 00:17:15,734 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-14 00:17:15,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 00:17:15,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 00:17:15,735 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_push [2022-07-14 00:17:15,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_push [2022-07-14 00:17:16,123 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 00:17:16,125 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 00:17:16,237 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-14 00:17:21,355 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 00:17:21,363 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 00:17:21,367 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-14 00:17:21,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:17:21 BoogieIcfgContainer [2022-07-14 00:17:21,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 00:17:21,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 00:17:21,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 00:17:21,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 00:17:21,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 12:17:14" (1/3) ... [2022-07-14 00:17:21,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8d8be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:17:21, skipping insertion in model container [2022-07-14 00:17:21,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:15" (2/3) ... [2022-07-14 00:17:21,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8d8be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:17:21, skipping insertion in model container [2022-07-14 00:17:21,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:17:21" (3/3) ... [2022-07-14 00:17:21,381 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 [2022-07-14 00:17:21,391 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 00:17:21,391 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-14 00:17:21,447 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 00:17:21,453 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@3b5edc42, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2a19c4e9 [2022-07-14 00:17:21,453 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-14 00:17:21,460 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) [2022-07-14 00:17:21,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-14 00:17:21,482 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:21,485 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] [2022-07-14 00:17:21,486 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:21,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:21,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1758611482, now seen corresponding path program 1 times [2022-07-14 00:17:21,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:17:21,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400885730] [2022-07-14 00:17:21,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:21,502 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:17:21,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:17:21,504 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) [2022-07-14 00:17:21,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-14 00:17:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:21,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 00:17:21,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:17:21,966 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-14 00:17:21,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:17:21,967 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:17:21,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400885730] [2022-07-14 00:17:21,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400885730] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:21,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:21,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 00:17:21,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645028004] [2022-07-14 00:17:21,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:21,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 00:17:21,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:17:21,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 00:17:21,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:17:21,991 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) [2022-07-14 00:17:22,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:22,146 INFO L93 Difference]: Finished difference Result 1877 states and 2724 transitions. [2022-07-14 00:17:22,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 00:17:22,149 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 [2022-07-14 00:17:22,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:22,161 INFO L225 Difference]: With dead ends: 1877 [2022-07-14 00:17:22,162 INFO L226 Difference]: Without dead ends: 1222 [2022-07-14 00:17:22,172 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 [2022-07-14 00:17:22,176 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 833 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-07-14 00:17:22,177 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] [2022-07-14 00:17:22,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-07-14 00:17:22,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1222. [2022-07-14 00:17:22,279 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) [2022-07-14 00:17:22,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1709 transitions. [2022-07-14 00:17:22,289 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1709 transitions. Word has length 78 [2022-07-14 00:17:22,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:22,290 INFO L495 AbstractCegarLoop]: Abstraction has 1222 states and 1709 transitions. [2022-07-14 00:17:22,290 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) [2022-07-14 00:17:22,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1709 transitions. [2022-07-14 00:17:22,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-14 00:17:22,298 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:22,299 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] [2022-07-14 00:17:22,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-14 00:17:22,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:17:22,508 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:22,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:22,508 INFO L85 PathProgramCache]: Analyzing trace with hash -152487068, now seen corresponding path program 1 times [2022-07-14 00:17:22,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:17:22,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191722229] [2022-07-14 00:17:22,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:22,509 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:17:22,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:17:22,510 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) [2022-07-14 00:17:22,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-14 00:17:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 00:17:22,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:17:22,960 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-14 00:17:22,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:17:22,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:17:22,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191722229] [2022-07-14 00:17:22,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191722229] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:22,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:22,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 00:17:22,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321175546] [2022-07-14 00:17:22,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:22,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:17:22,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:17:22,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:17:22,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:17:22,963 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) [2022-07-14 00:17:23,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:23,135 INFO L93 Difference]: Finished difference Result 3615 states and 5103 transitions. [2022-07-14 00:17:23,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:17:23,136 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 [2022-07-14 00:17:23,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:23,146 INFO L225 Difference]: With dead ends: 3615 [2022-07-14 00:17:23,146 INFO L226 Difference]: Without dead ends: 2411 [2022-07-14 00:17:23,149 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 [2022-07-14 00:17:23,150 INFO L413 NwaCegarLoop]: 1011 mSDtfsCounter, 863 mSDsluCounter, 2881 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 3892 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 [2022-07-14 00:17:23,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 3892 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 00:17:23,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2022-07-14 00:17:23,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 2403. [2022-07-14 00:17:23,231 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) [2022-07-14 00:17:23,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 3398 transitions. [2022-07-14 00:17:23,240 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 3398 transitions. Word has length 82 [2022-07-14 00:17:23,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:23,240 INFO L495 AbstractCegarLoop]: Abstraction has 2403 states and 3398 transitions. [2022-07-14 00:17:23,240 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) [2022-07-14 00:17:23,241 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 3398 transitions. [2022-07-14 00:17:23,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-14 00:17:23,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:23,246 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] [2022-07-14 00:17:23,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-14 00:17:23,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:17:23,459 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:23,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:23,459 INFO L85 PathProgramCache]: Analyzing trace with hash -950375967, now seen corresponding path program 1 times [2022-07-14 00:17:23,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:17:23,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856068188] [2022-07-14 00:17:23,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:23,461 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:17:23,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:17:23,462 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) [2022-07-14 00:17:23,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-14 00:17:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:23,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 00:17:23,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:17:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-14 00:17:23,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:17:23,862 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:17:23,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856068188] [2022-07-14 00:17:23,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856068188] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:23,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:23,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 00:17:23,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177469675] [2022-07-14 00:17:23,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:23,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 00:17:23,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:17:23,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 00:17:23,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:17:23,864 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) [2022-07-14 00:17:24,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:24,026 INFO L93 Difference]: Finished difference Result 6105 states and 8595 transitions. [2022-07-14 00:17:24,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 00:17:24,027 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 [2022-07-14 00:17:24,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:24,042 INFO L225 Difference]: With dead ends: 6105 [2022-07-14 00:17:24,043 INFO L226 Difference]: Without dead ends: 3726 [2022-07-14 00:17:24,048 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 [2022-07-14 00:17:24,049 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 [2022-07-14 00:17:24,049 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] [2022-07-14 00:17:24,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3726 states. [2022-07-14 00:17:24,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3726 to 3713. [2022-07-14 00:17:24,140 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) [2022-07-14 00:17:24,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 5214 transitions. [2022-07-14 00:17:24,152 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 5214 transitions. Word has length 128 [2022-07-14 00:17:24,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:24,153 INFO L495 AbstractCegarLoop]: Abstraction has 3713 states and 5214 transitions. [2022-07-14 00:17:24,153 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) [2022-07-14 00:17:24,153 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 5214 transitions. [2022-07-14 00:17:24,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-14 00:17:24,158 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:24,158 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] [2022-07-14 00:17:24,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-14 00:17:24,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:17:24,375 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:24,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:24,375 INFO L85 PathProgramCache]: Analyzing trace with hash -944835305, now seen corresponding path program 1 times [2022-07-14 00:17:24,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:17:24,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003578471] [2022-07-14 00:17:24,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:24,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:17:24,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:17:24,383 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) [2022-07-14 00:17:24,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-14 00:17:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:24,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 00:17:24,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:17:24,790 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-14 00:17:24,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:17:24,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:17:24,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003578471] [2022-07-14 00:17:24,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003578471] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:24,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:24,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 00:17:24,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529162673] [2022-07-14 00:17:24,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:24,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 00:17:24,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:17:24,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 00:17:24,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:17:24,797 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) [2022-07-14 00:17:24,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:24,953 INFO L93 Difference]: Finished difference Result 9002 states and 12550 transitions. [2022-07-14 00:17:24,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 00:17:24,953 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 [2022-07-14 00:17:24,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:24,976 INFO L225 Difference]: With dead ends: 9002 [2022-07-14 00:17:24,976 INFO L226 Difference]: Without dead ends: 5313 [2022-07-14 00:17:24,985 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 [2022-07-14 00:17:24,986 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 [2022-07-14 00:17:24,987 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] [2022-07-14 00:17:24,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5313 states. [2022-07-14 00:17:25,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5313 to 5304. [2022-07-14 00:17:25,138 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) [2022-07-14 00:17:25,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5304 states to 5304 states and 7353 transitions. [2022-07-14 00:17:25,152 INFO L78 Accepts]: Start accepts. Automaton has 5304 states and 7353 transitions. Word has length 149 [2022-07-14 00:17:25,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:25,152 INFO L495 AbstractCegarLoop]: Abstraction has 5304 states and 7353 transitions. [2022-07-14 00:17:25,153 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) [2022-07-14 00:17:25,153 INFO L276 IsEmpty]: Start isEmpty. Operand 5304 states and 7353 transitions. [2022-07-14 00:17:25,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-14 00:17:25,160 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:25,160 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] [2022-07-14 00:17:25,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-14 00:17:25,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:17:25,375 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:25,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:25,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1643009203, now seen corresponding path program 1 times [2022-07-14 00:17:25,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:17:25,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18558355] [2022-07-14 00:17:25,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:25,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:17:25,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:17:25,377 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) [2022-07-14 00:17:25,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-14 00:17:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:25,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 00:17:25,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:17:25,790 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-14 00:17:25,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:17:25,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:17:25,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18558355] [2022-07-14 00:17:25,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [18558355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:25,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:25,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 00:17:25,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188239904] [2022-07-14 00:17:25,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:25,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:17:25,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:17:25,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:17:25,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:17:25,791 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) [2022-07-14 00:17:25,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:25,952 INFO L93 Difference]: Finished difference Result 8032 states and 11140 transitions. [2022-07-14 00:17:25,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 00:17:25,953 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 [2022-07-14 00:17:25,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:25,963 INFO L225 Difference]: With dead ends: 8032 [2022-07-14 00:17:25,964 INFO L226 Difference]: Without dead ends: 2743 [2022-07-14 00:17:25,973 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 [2022-07-14 00:17:25,974 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, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:25,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 3534 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 00:17:25,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2743 states. [2022-07-14 00:17:26,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2743 to 2697. [2022-07-14 00:17:26,046 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) [2022-07-14 00:17:26,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2697 states to 2697 states and 3739 transitions. [2022-07-14 00:17:26,055 INFO L78 Accepts]: Start accepts. Automaton has 2697 states and 3739 transitions. Word has length 151 [2022-07-14 00:17:26,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:26,056 INFO L495 AbstractCegarLoop]: Abstraction has 2697 states and 3739 transitions. [2022-07-14 00:17:26,057 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) [2022-07-14 00:17:26,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2697 states and 3739 transitions. [2022-07-14 00:17:26,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-14 00:17:26,062 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:26,062 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] [2022-07-14 00:17:26,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-14 00:17:26,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:17:26,276 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:26,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:26,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1883248949, now seen corresponding path program 1 times [2022-07-14 00:17:26,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:17:26,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040878890] [2022-07-14 00:17:26,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:26,278 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:17:26,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:17:26,279 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) [2022-07-14 00:17:26,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-14 00:17:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:26,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 00:17:26,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:17:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-07-14 00:17:26,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:17:26,677 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:17:26,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040878890] [2022-07-14 00:17:26,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040878890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:26,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:26,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 00:17:26,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30543235] [2022-07-14 00:17:26,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:26,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 00:17:26,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:17:26,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 00:17:26,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:17:26,678 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) [2022-07-14 00:17:26,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:26,896 INFO L93 Difference]: Finished difference Result 6649 states and 9223 transitions. [2022-07-14 00:17:26,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 00:17:26,897 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 [2022-07-14 00:17:26,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:26,913 INFO L225 Difference]: With dead ends: 6649 [2022-07-14 00:17:26,913 INFO L226 Difference]: Without dead ends: 4002 [2022-07-14 00:17:26,920 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 [2022-07-14 00:17:26,920 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 [2022-07-14 00:17:26,921 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] [2022-07-14 00:17:26,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4002 states. [2022-07-14 00:17:26,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4002 to 3985. [2022-07-14 00:17:27,012 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) [2022-07-14 00:17:27,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3985 states to 3985 states and 5480 transitions. [2022-07-14 00:17:27,022 INFO L78 Accepts]: Start accepts. Automaton has 3985 states and 5480 transitions. Word has length 151 [2022-07-14 00:17:27,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:27,023 INFO L495 AbstractCegarLoop]: Abstraction has 3985 states and 5480 transitions. [2022-07-14 00:17:27,024 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) [2022-07-14 00:17:27,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3985 states and 5480 transitions. [2022-07-14 00:17:27,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-14 00:17:27,029 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:27,029 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] [2022-07-14 00:17:27,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-14 00:17:27,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:17:27,235 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:27,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:27,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1042738156, now seen corresponding path program 1 times [2022-07-14 00:17:27,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:17:27,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160212819] [2022-07-14 00:17:27,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:27,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:17:27,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:17:27,238 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) [2022-07-14 00:17:27,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-14 00:17:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:27,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 00:17:27,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:17:27,629 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-07-14 00:17:27,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:17:27,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:17:27,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160212819] [2022-07-14 00:17:27,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160212819] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:27,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:27,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 00:17:27,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370836902] [2022-07-14 00:17:27,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:27,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 00:17:27,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:17:27,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 00:17:27,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:17:27,631 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) [2022-07-14 00:17:27,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:27,715 INFO L93 Difference]: Finished difference Result 5989 states and 8307 transitions. [2022-07-14 00:17:27,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 00:17:27,716 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 [2022-07-14 00:17:27,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:27,729 INFO L225 Difference]: With dead ends: 5989 [2022-07-14 00:17:27,729 INFO L226 Difference]: Without dead ends: 4005 [2022-07-14 00:17:27,734 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 [2022-07-14 00:17:27,734 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 [2022-07-14 00:17:27,735 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] [2022-07-14 00:17:27,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4005 states. [2022-07-14 00:17:27,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4005 to 4005. [2022-07-14 00:17:27,802 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) [2022-07-14 00:17:27,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4005 states to 4005 states and 5500 transitions. [2022-07-14 00:17:27,811 INFO L78 Accepts]: Start accepts. Automaton has 4005 states and 5500 transitions. Word has length 156 [2022-07-14 00:17:27,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:27,812 INFO L495 AbstractCegarLoop]: Abstraction has 4005 states and 5500 transitions. [2022-07-14 00:17:27,812 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) [2022-07-14 00:17:27,812 INFO L276 IsEmpty]: Start isEmpty. Operand 4005 states and 5500 transitions. [2022-07-14 00:17:27,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-14 00:17:27,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:27,820 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] [2022-07-14 00:17:27,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-14 00:17:28,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:17:28,035 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:28,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:28,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1404375923, now seen corresponding path program 1 times [2022-07-14 00:17:28,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:17:28,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417472188] [2022-07-14 00:17:28,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:28,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:17:28,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:17:28,038 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) [2022-07-14 00:17:28,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-14 00:17:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:28,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-14 00:17:28,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:17:28,641 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-14 00:17:28,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:17:28,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:17:28,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417472188] [2022-07-14 00:17:28,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417472188] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:28,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:28,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:17:28,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924882825] [2022-07-14 00:17:28,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:28,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:17:28,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:17:28,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:17:28,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:17:28,642 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) [2022-07-14 00:17:32,363 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 [] [2022-07-14 00:17:34,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:17:36,510 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:17:38,523 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:17:40,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:17:43,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:43,553 INFO L93 Difference]: Finished difference Result 8583 states and 11834 transitions. [2022-07-14 00:17:43,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 00:17:43,554 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 [2022-07-14 00:17:43,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:43,587 INFO L225 Difference]: With dead ends: 8583 [2022-07-14 00:17:43,587 INFO L226 Difference]: Without dead ends: 4628 [2022-07-14 00:17:43,598 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 [2022-07-14 00:17:43,599 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 1324 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 410 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 2841 SdHoareTripleChecker+Invalid, 1934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:43,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1434 Valid, 2841 Invalid, 1934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 1519 Invalid, 5 Unknown, 0 Unchecked, 14.6s Time] [2022-07-14 00:17:43,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4628 states. [2022-07-14 00:17:43,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4628 to 4413. [2022-07-14 00:17:43,721 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) [2022-07-14 00:17:43,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4413 states to 4413 states and 6013 transitions. [2022-07-14 00:17:43,747 INFO L78 Accepts]: Start accepts. Automaton has 4413 states and 6013 transitions. Word has length 158 [2022-07-14 00:17:43,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:43,748 INFO L495 AbstractCegarLoop]: Abstraction has 4413 states and 6013 transitions. [2022-07-14 00:17:43,748 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) [2022-07-14 00:17:43,748 INFO L276 IsEmpty]: Start isEmpty. Operand 4413 states and 6013 transitions. [2022-07-14 00:17:43,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-14 00:17:43,757 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:43,757 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] [2022-07-14 00:17:43,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-14 00:17:43,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:17:43,967 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:43,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:43,968 INFO L85 PathProgramCache]: Analyzing trace with hash 484822487, now seen corresponding path program 1 times [2022-07-14 00:17:43,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:17:43,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151800088] [2022-07-14 00:17:43,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:43,969 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:17:43,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:17:43,971 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) [2022-07-14 00:17:43,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-14 00:17:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:44,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-14 00:17:44,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:17:44,690 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-14 00:17:44,691 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 [2022-07-14 00:17:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-07-14 00:17:44,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:17:44,754 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:17:44,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151800088] [2022-07-14 00:17:44,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151800088] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:44,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:44,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-14 00:17:44,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998276116] [2022-07-14 00:17:44,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:44,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 00:17:44,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:17:44,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 00:17:44,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-14 00:17:44,755 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) [2022-07-14 00:17:49,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:17:51,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:17:53,902 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:17:55,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:17:57,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:17:59,939 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:03,799 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:05,676 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:06,752 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:08,086 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:10,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:18:10,235 INFO L93 Difference]: Finished difference Result 8878 states and 12123 transitions. [2022-07-14 00:18:10,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 00:18:10,239 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 [2022-07-14 00:18:10,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:18:10,266 INFO L225 Difference]: With dead ends: 8878 [2022-07-14 00:18:10,269 INFO L226 Difference]: Without dead ends: 4515 [2022-07-14 00:18:10,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-07-14 00:18:10,282 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 128 mSDsluCounter, 5712 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 29 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s 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, 25.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:18:10,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 6586 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 422 Invalid, 6 Unknown, 0 Unchecked, 25.0s Time] [2022-07-14 00:18:10,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4515 states. [2022-07-14 00:18:10,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4515 to 4443. [2022-07-14 00:18:10,383 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) [2022-07-14 00:18:10,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4443 states to 4443 states and 6049 transitions. [2022-07-14 00:18:10,399 INFO L78 Accepts]: Start accepts. Automaton has 4443 states and 6049 transitions. Word has length 193 [2022-07-14 00:18:10,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:18:10,400 INFO L495 AbstractCegarLoop]: Abstraction has 4443 states and 6049 transitions. [2022-07-14 00:18:10,400 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) [2022-07-14 00:18:10,400 INFO L276 IsEmpty]: Start isEmpty. Operand 4443 states and 6049 transitions. [2022-07-14 00:18:10,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-14 00:18:10,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:18:10,408 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] [2022-07-14 00:18:10,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-14 00:18:10,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:18:10,624 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:18:10,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:18:10,625 INFO L85 PathProgramCache]: Analyzing trace with hash -7803687, now seen corresponding path program 1 times [2022-07-14 00:18:10,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:18:10,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514985149] [2022-07-14 00:18:10,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:18:10,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:18:10,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:18:10,627 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) [2022-07-14 00:18:10,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-14 00:18:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:11,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 00:18:11,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:18:11,174 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-07-14 00:18:11,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:18:11,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:18:11,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514985149] [2022-07-14 00:18:11,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514985149] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:18:11,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:18:11,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 00:18:11,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421841766] [2022-07-14 00:18:11,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:18:11,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:18:11,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:18:11,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:18:11,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:18:11,175 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) [2022-07-14 00:18:11,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:18:11,320 INFO L93 Difference]: Finished difference Result 8886 states and 12152 transitions. [2022-07-14 00:18:11,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:18:11,321 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 [2022-07-14 00:18:11,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:18:11,335 INFO L225 Difference]: With dead ends: 8886 [2022-07-14 00:18:11,335 INFO L226 Difference]: Without dead ends: 4493 [2022-07-14 00:18:11,346 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 [2022-07-14 00:18:11,346 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 [2022-07-14 00:18:11,347 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] [2022-07-14 00:18:11,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4493 states. [2022-07-14 00:18:11,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4493 to 4475. [2022-07-14 00:18:11,444 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) [2022-07-14 00:18:11,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4475 states to 4475 states and 6089 transitions. [2022-07-14 00:18:11,455 INFO L78 Accepts]: Start accepts. Automaton has 4475 states and 6089 transitions. Word has length 193 [2022-07-14 00:18:11,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:18:11,455 INFO L495 AbstractCegarLoop]: Abstraction has 4475 states and 6089 transitions. [2022-07-14 00:18:11,455 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) [2022-07-14 00:18:11,456 INFO L276 IsEmpty]: Start isEmpty. Operand 4475 states and 6089 transitions. [2022-07-14 00:18:11,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-14 00:18:11,463 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:18:11,463 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] [2022-07-14 00:18:11,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-14 00:18:11,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:18:11,680 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:18:11,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:18:11,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1515483270, now seen corresponding path program 1 times [2022-07-14 00:18:11,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:18:11,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106079859] [2022-07-14 00:18:11,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:18:11,681 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:18:11,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:18:11,683 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) [2022-07-14 00:18:11,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-14 00:18:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:12,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 00:18:12,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:18:12,255 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-07-14 00:18:12,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:18:12,256 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:18:12,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106079859] [2022-07-14 00:18:12,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106079859] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:18:12,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:18:12,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:18:12,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444985407] [2022-07-14 00:18:12,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:18:12,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:18:12,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:18:12,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:18:12,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 00:18:12,260 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) [2022-07-14 00:18:12,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:18:12,708 INFO L93 Difference]: Finished difference Result 10570 states and 14339 transitions. [2022-07-14 00:18:12,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:18:12,713 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 [2022-07-14 00:18:12,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:18:12,733 INFO L225 Difference]: With dead ends: 10570 [2022-07-14 00:18:12,733 INFO L226 Difference]: Without dead ends: 6145 [2022-07-14 00:18:12,746 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 [2022-07-14 00:18:12,747 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 934 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-07-14 00:18:12,747 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] [2022-07-14 00:18:12,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6145 states. [2022-07-14 00:18:12,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6145 to 4483. [2022-07-14 00:18:12,930 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) [2022-07-14 00:18:12,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4483 states to 4483 states and 6097 transitions. [2022-07-14 00:18:12,941 INFO L78 Accepts]: Start accepts. Automaton has 4483 states and 6097 transitions. Word has length 215 [2022-07-14 00:18:12,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:18:12,941 INFO L495 AbstractCegarLoop]: Abstraction has 4483 states and 6097 transitions. [2022-07-14 00:18:12,941 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) [2022-07-14 00:18:12,942 INFO L276 IsEmpty]: Start isEmpty. Operand 4483 states and 6097 transitions. [2022-07-14 00:18:12,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-14 00:18:12,949 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:18:12,949 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] [2022-07-14 00:18:12,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-14 00:18:13,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:18:13,168 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:18:13,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:18:13,168 INFO L85 PathProgramCache]: Analyzing trace with hash -592633712, now seen corresponding path program 1 times [2022-07-14 00:18:13,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:18:13,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554122331] [2022-07-14 00:18:13,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:18:13,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:18:13,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:18:13,170 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) [2022-07-14 00:18:13,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-14 00:18:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:13,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-14 00:18:13,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:18:14,047 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-07-14 00:18:14,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:18:14,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:18:14,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554122331] [2022-07-14 00:18:14,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554122331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:18:14,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:18:14,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-14 00:18:14,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999858049] [2022-07-14 00:18:14,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:18:14,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 00:18:14,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:18:14,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 00:18:14,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-14 00:18:14,049 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) [2022-07-14 00:18:14,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:18:14,702 INFO L93 Difference]: Finished difference Result 10681 states and 14957 transitions. [2022-07-14 00:18:14,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 00:18:14,703 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 [2022-07-14 00:18:14,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:18:14,720 INFO L225 Difference]: With dead ends: 10681 [2022-07-14 00:18:14,720 INFO L226 Difference]: Without dead ends: 6248 [2022-07-14 00:18:14,730 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 [2022-07-14 00:18:14,731 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 [2022-07-14 00:18:14,731 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] [2022-07-14 00:18:14,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6248 states. [2022-07-14 00:18:14,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6248 to 4525. [2022-07-14 00:18:14,855 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) [2022-07-14 00:18:14,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4525 states to 4525 states and 6135 transitions. [2022-07-14 00:18:14,868 INFO L78 Accepts]: Start accepts. Automaton has 4525 states and 6135 transitions. Word has length 200 [2022-07-14 00:18:14,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:18:14,870 INFO L495 AbstractCegarLoop]: Abstraction has 4525 states and 6135 transitions. [2022-07-14 00:18:14,870 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) [2022-07-14 00:18:14,870 INFO L276 IsEmpty]: Start isEmpty. Operand 4525 states and 6135 transitions. [2022-07-14 00:18:14,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-14 00:18:14,877 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:18:14,878 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] [2022-07-14 00:18:14,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-07-14 00:18:15,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:18:15,097 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:18:15,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:18:15,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1833099563, now seen corresponding path program 1 times [2022-07-14 00:18:15,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:18:15,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540331282] [2022-07-14 00:18:15,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:18:15,099 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:18:15,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:18:15,100 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) [2022-07-14 00:18:15,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-14 00:18:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:15,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 00:18:15,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:18:15,656 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-07-14 00:18:15,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:18:15,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:18:15,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540331282] [2022-07-14 00:18:15,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540331282] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:18:15,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:18:15,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 00:18:15,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851867914] [2022-07-14 00:18:15,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:18:15,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:18:15,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:18:15,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:18:15,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:18:15,658 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) [2022-07-14 00:18:16,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:18:16,294 INFO L93 Difference]: Finished difference Result 10696 states and 14455 transitions. [2022-07-14 00:18:16,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 00:18:16,295 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 [2022-07-14 00:18:16,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:18:16,314 INFO L225 Difference]: With dead ends: 10696 [2022-07-14 00:18:16,314 INFO L226 Difference]: Without dead ends: 6221 [2022-07-14 00:18:16,324 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 [2022-07-14 00:18:16,325 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 1212 mSDsluCounter, 3340 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 00:18:16,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 4850 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 00:18:16,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6221 states. [2022-07-14 00:18:16,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6221 to 4529. [2022-07-14 00:18:16,498 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) [2022-07-14 00:18:16,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4529 states to 4529 states and 6139 transitions. [2022-07-14 00:18:16,509 INFO L78 Accepts]: Start accepts. Automaton has 4529 states and 6139 transitions. Word has length 226 [2022-07-14 00:18:16,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:18:16,511 INFO L495 AbstractCegarLoop]: Abstraction has 4529 states and 6139 transitions. [2022-07-14 00:18:16,511 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) [2022-07-14 00:18:16,511 INFO L276 IsEmpty]: Start isEmpty. Operand 4529 states and 6139 transitions. [2022-07-14 00:18:16,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-07-14 00:18:16,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:18:16,519 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] [2022-07-14 00:18:16,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-14 00:18:16,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:18:16,726 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:18:16,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:18:16,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1966699871, now seen corresponding path program 1 times [2022-07-14 00:18:16,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:18:16,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314619758] [2022-07-14 00:18:16,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:18:16,727 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:18:16,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:18:16,728 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) [2022-07-14 00:18:16,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-14 00:18:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:17,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-14 00:18:17,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:18:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 98 proven. 8 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2022-07-14 00:18:17,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:18:18,851 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-07-14 00:18:18,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:18:18,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314619758] [2022-07-14 00:18:18,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314619758] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:18:18,852 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 00:18:18,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2022-07-14 00:18:18,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093743264] [2022-07-14 00:18:18,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 00:18:18,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-14 00:18:18,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:18:18,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-14 00:18:18,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-07-14 00:18:18,853 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) [2022-07-14 00:18:23,415 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:25,422 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:27,446 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:30,320 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:32,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:34,350 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:36,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:38,407 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:47,583 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:49,591 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:51,607 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:53,623 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:55,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:57,682 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:59,695 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:19:02,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:19:04,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:19:06,878 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:19:08,891 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:19:10,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:19:12,914 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 [] [2022-07-14 00:19:16,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:19:16,464 INFO L93 Difference]: Finished difference Result 13740 states and 19055 transitions. [2022-07-14 00:19:16,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-14 00:19:16,465 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 [2022-07-14 00:19:16,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:19:16,524 INFO L225 Difference]: With dead ends: 13740 [2022-07-14 00:19:16,524 INFO L226 Difference]: Without dead ends: 11260 [2022-07-14 00:19:16,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2022-07-14 00:19:16,532 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 7074 mSDsluCounter, 5200 mSDsCounter, 0 mSdLazyCounter, 4842 mSolverCounterSat, 2421 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.9s 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, 56.5s IncrementalHoareTripleChecker+Time [2022-07-14 00:19:16,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7279 Valid, 6713 Invalid, 7284 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2421 Valid, 4842 Invalid, 21 Unknown, 0 Unchecked, 56.5s Time] [2022-07-14 00:19:16,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11260 states. [2022-07-14 00:19:16,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11260 to 11074. [2022-07-14 00:19:16,915 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) [2022-07-14 00:19:16,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11074 states to 11074 states and 15161 transitions. [2022-07-14 00:19:16,974 INFO L78 Accepts]: Start accepts. Automaton has 11074 states and 15161 transitions. Word has length 233 [2022-07-14 00:19:16,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:19:16,975 INFO L495 AbstractCegarLoop]: Abstraction has 11074 states and 15161 transitions. [2022-07-14 00:19:16,975 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) [2022-07-14 00:19:16,975 INFO L276 IsEmpty]: Start isEmpty. Operand 11074 states and 15161 transitions. [2022-07-14 00:19:16,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-07-14 00:19:16,981 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:19:16,982 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, 1, 1] [2022-07-14 00:19:17,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-07-14 00:19:17,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:19:17,223 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:19:17,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:19:17,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1802197632, now seen corresponding path program 1 times [2022-07-14 00:19:17,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:19:17,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469630795] [2022-07-14 00:19:17,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:19:17,224 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:19:17,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:19:17,225 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) [2022-07-14 00:19:17,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-14 00:19:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:17,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 00:19:17,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:19:17,874 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-07-14 00:19:17,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:19:17,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:19:17,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469630795] [2022-07-14 00:19:17,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469630795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:19:17,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:19:17,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:19:17,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510110355] [2022-07-14 00:19:17,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:19:17,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:19:17,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:19:17,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:19:17,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 00:19:17,876 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) [2022-07-14 00:19:18,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:19:18,315 INFO L93 Difference]: Finished difference Result 20193 states and 27862 transitions. [2022-07-14 00:19:18,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:19:18,316 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 [2022-07-14 00:19:18,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:19:18,345 INFO L225 Difference]: With dead ends: 20193 [2022-07-14 00:19:18,346 INFO L226 Difference]: Without dead ends: 11164 [2022-07-14 00:19:18,360 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 [2022-07-14 00:19:18,361 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 [2022-07-14 00:19:18,361 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] [2022-07-14 00:19:18,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11164 states. [2022-07-14 00:19:18,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11164 to 11104. [2022-07-14 00:19:18,717 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) [2022-07-14 00:19:18,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11104 states to 11104 states and 15201 transitions. [2022-07-14 00:19:18,747 INFO L78 Accepts]: Start accepts. Automaton has 11104 states and 15201 transitions. Word has length 235 [2022-07-14 00:19:18,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:19:18,748 INFO L495 AbstractCegarLoop]: Abstraction has 11104 states and 15201 transitions. [2022-07-14 00:19:18,748 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) [2022-07-14 00:19:18,748 INFO L276 IsEmpty]: Start isEmpty. Operand 11104 states and 15201 transitions. [2022-07-14 00:19:18,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-14 00:19:18,755 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:19:18,755 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] [2022-07-14 00:19:18,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-14 00:19:18,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:19:18,980 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:19:18,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:19:18,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1056928775, now seen corresponding path program 1 times [2022-07-14 00:19:18,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:19:18,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496656174] [2022-07-14 00:19:18,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:19:18,981 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:19:18,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:19:18,982 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) [2022-07-14 00:19:18,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-14 00:19:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:19,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-14 00:19:19,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:19:20,447 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-07-14 00:19:20,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:19:20,448 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:19:20,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496656174] [2022-07-14 00:19:20,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496656174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:19:20,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:19:20,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-14 00:19:20,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809467052] [2022-07-14 00:19:20,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:19:20,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-14 00:19:20,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:19:20,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-14 00:19:20,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-07-14 00:19:20,450 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) [2022-07-14 00:19:22,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:19:22,801 INFO L93 Difference]: Finished difference Result 26321 states and 37083 transitions. [2022-07-14 00:19:22,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-14 00:19:22,803 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 [2022-07-14 00:19:22,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:19:22,841 INFO L225 Difference]: With dead ends: 26321 [2022-07-14 00:19:22,842 INFO L226 Difference]: Without dead ends: 15267 [2022-07-14 00:19:22,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-07-14 00:19:22,858 INFO L413 NwaCegarLoop]: 1359 mSDtfsCounter, 695 mSDsluCounter, 16744 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 18103 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-14 00:19:22,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 18103 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-14 00:19:22,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15267 states. [2022-07-14 00:19:23,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15267 to 11169. [2022-07-14 00:19:23,567 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) [2022-07-14 00:19:23,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11169 states to 11169 states and 15282 transitions. [2022-07-14 00:19:23,593 INFO L78 Accepts]: Start accepts. Automaton has 11169 states and 15282 transitions. Word has length 237 [2022-07-14 00:19:23,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:19:23,594 INFO L495 AbstractCegarLoop]: Abstraction has 11169 states and 15282 transitions. [2022-07-14 00:19:23,594 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) [2022-07-14 00:19:23,594 INFO L276 IsEmpty]: Start isEmpty. Operand 11169 states and 15282 transitions. [2022-07-14 00:19:23,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-14 00:19:23,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:19:23,605 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] [2022-07-14 00:19:23,628 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-07-14 00:19:23,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:19:23,820 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:19:23,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:19:23,820 INFO L85 PathProgramCache]: Analyzing trace with hash 782169161, now seen corresponding path program 1 times [2022-07-14 00:19:23,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:19:23,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690134077] [2022-07-14 00:19:23,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:19:23,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:19:23,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:19:23,823 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) [2022-07-14 00:19:23,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-14 00:19:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 00:19:26,296 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 00:19:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 00:19:28,344 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-14 00:19:28,344 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-14 00:19:28,345 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-14 00:19:28,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-07-14 00:19:28,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:19:28,555 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:19:28,557 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-14 00:19:28,599 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-14 00:19:28,600 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-14 00:19:28,600 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-14 00:19:28,600 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-14 00:19:28,600 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-14 00:19:28,600 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-14 00:19:28,601 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-14 00:19:28,601 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-14 00:19:28,601 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-14 00:19:28,601 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-07-14 00:19:28,604 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == dest.base && #res.offset == dest.offset; is not ensure(true) [2022-07-14 00:19:28,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 12:19:28 BoogieIcfgContainer [2022-07-14 00:19:28,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-14 00:19:28,801 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 00:19:28,801 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 00:19:28,801 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 00:19:28,801 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:17:21" (3/4) ... [2022-07-14 00:19:28,804 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-14 00:19:28,804 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 00:19:28,804 INFO L158 Benchmark]: Toolchain (without parser) took 134738.30ms. Allocated memory was 54.5MB in the beginning and 591.4MB in the end (delta: 536.9MB). Free memory was 34.4MB in the beginning and 399.8MB in the end (delta: -365.4MB). Peak memory consumption was 170.9MB. Max. memory is 16.1GB. [2022-07-14 00:19:28,805 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 54.5MB. Free memory was 35.7MB in the beginning and 35.6MB in the end (delta: 46.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 00:19:28,805 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1350.56ms. Allocated memory was 54.5MB in the beginning and 136.3MB in the end (delta: 81.8MB). Free memory was 34.2MB in the beginning and 67.5MB in the end (delta: -33.3MB). Peak memory consumption was 69.9MB. Max. memory is 16.1GB. [2022-07-14 00:19:28,805 INFO L158 Benchmark]: Boogie Procedure Inliner took 119.12ms. Allocated memory is still 136.3MB. Free memory was 67.5MB in the beginning and 57.7MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-14 00:19:28,808 INFO L158 Benchmark]: Boogie Preprocessor took 123.00ms. Allocated memory is still 136.3MB. Free memory was 57.7MB in the beginning and 73.4MB in the end (delta: -15.7MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2022-07-14 00:19:28,809 INFO L158 Benchmark]: RCFGBuilder took 5709.09ms. Allocated memory was 136.3MB in the beginning and 197.1MB in the end (delta: 60.8MB). Free memory was 73.4MB in the beginning and 90.1MB in the end (delta: -16.7MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2022-07-14 00:19:28,810 INFO L158 Benchmark]: TraceAbstraction took 127427.83ms. Allocated memory was 197.1MB in the beginning and 591.4MB in the end (delta: 394.3MB). Free memory was 89.0MB in the beginning and 400.9MB in the end (delta: -311.9MB). Peak memory consumption was 305.7MB. Max. memory is 16.1GB. [2022-07-14 00:19:28,810 INFO L158 Benchmark]: Witness Printer took 3.13ms. Allocated memory is still 591.4MB. Free memory was 400.9MB in the beginning and 399.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 00:19:28,816 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 54.5MB. Free memory was 35.7MB in the beginning and 35.6MB in the end (delta: 46.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1350.56ms. Allocated memory was 54.5MB in the beginning and 136.3MB in the end (delta: 81.8MB). Free memory was 34.2MB in the beginning and 67.5MB in the end (delta: -33.3MB). Peak memory consumption was 69.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 119.12ms. Allocated memory is still 136.3MB. Free memory was 67.5MB in the beginning and 57.7MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 123.00ms. Allocated memory is still 136.3MB. Free memory was 57.7MB in the beginning and 73.4MB in the end (delta: -15.7MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. * RCFGBuilder took 5709.09ms. Allocated memory was 136.3MB in the beginning and 197.1MB in the end (delta: 60.8MB). Free memory was 73.4MB in the beginning and 90.1MB in the end (delta: -16.7MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * TraceAbstraction took 127427.83ms. Allocated memory was 197.1MB in the beginning and 591.4MB in the end (delta: 394.3MB). Free memory was 89.0MB in the beginning and 400.9MB in the end (delta: -311.9MB). Peak memory consumption was 305.7MB. Max. memory is 16.1GB. * Witness Printer took 3.13ms. Allocated memory is still 591.4MB. Free memory was 400.9MB in the beginning and 399.8MB in the end (delta: 1.0MB). 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={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] [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={30:0}, skb={0:0}, 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={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] [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={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] [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: 127.1s, OverallIterations: 17, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 104.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 mSolverCounterUnknown, 15590 SdHoareTripleChecker+Valid, 99.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15198 mSDsluCounter, 80272 SdHoareTripleChecker+Invalid, 96.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 62417 mSDsCounter, 3236 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7593 IncrementalHoareTripleChecker+Invalid, 10861 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3236 mSolverCounterUnsat, 17855 mSDtfsCounter, 7593 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: 3.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 9819 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 5.7s SatisfiabilityAnalysisTime, 4.4s 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 [2022-07-14 00:19:28,866 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