/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:27:08,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:27:08,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:27:08,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:27:08,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:27:08,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:27:08,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:27:08,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:27:08,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:27:08,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:27:08,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:27:08,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:27:08,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:27:08,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:27:08,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:27:08,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:27:08,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:27:08,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:27:08,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:27:08,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:27:08,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:27:08,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:27:08,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:27:08,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:27:08,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:27:08,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:27:08,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:27:08,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:27:08,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:27:08,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:27:08,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:27:08,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:27:08,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:27:08,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:27:08,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:27:08,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:27:08,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:27:08,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:27:08,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:27:08,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:27:08,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:27:08,937 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-09-24 17:27:08,964 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:27:08,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:27:08,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:27:08,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:27:08,969 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:27:08,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:27:08,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:27:08,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:27:08,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:27:08,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:27:08,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:27:08,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:27:08,971 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:27:08,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:27:08,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:27:08,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:27:08,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:27:08,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:27:08,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:27:08,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:27:08,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:27:08,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:27:08,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:27:08,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:27:08,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:27:08,975 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:27:08,975 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-24 17:27:08,975 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; [2020-09-24 17:27:09,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:27:09,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:27:09,546 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:27:09,549 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:27:09,549 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:27:09,551 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i [2020-09-24 17:27:09,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d1dda1f8/e7e83d8c2cd7418a8f91a364fa4e3caf/FLAG7ca3f4d05 [2020-09-24 17:27:10,507 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:27:10,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i [2020-09-24 17:27:10,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d1dda1f8/e7e83d8c2cd7418a8f91a364fa4e3caf/FLAG7ca3f4d05 [2020-09-24 17:27:11,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d1dda1f8/e7e83d8c2cd7418a8f91a364fa4e3caf [2020-09-24 17:27:11,068 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:27:11,074 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:27:11,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:27:11,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:27:11,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:27:11,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:27:11" (1/1) ... [2020-09-24 17:27:11,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10b0f1f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:27:11, skipping insertion in model container [2020-09-24 17:27:11,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:27:11" (1/1) ... [2020-09-24 17:27:11,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:27:11,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:27:12,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:27:12,291 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:27:12,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:27:12,548 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:27:12,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:27:12 WrapperNode [2020-09-24 17:27:12,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:27:12,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:27:12,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:27:12,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:27:12,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:27:12" (1/1) ... [2020-09-24 17:27:12,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:27:12" (1/1) ... [2020-09-24 17:27:12,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:27:12" (1/1) ... [2020-09-24 17:27:12,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:27:12" (1/1) ... [2020-09-24 17:27:12,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:27:12" (1/1) ... [2020-09-24 17:27:12,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:27:12" (1/1) ... [2020-09-24 17:27:12,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:27:12" (1/1) ... [2020-09-24 17:27:12,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:27:12,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:27:12,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:27:12,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:27:12,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:27:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:27:12,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:27:12,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:27:12,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-09-24 17:27:12,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-09-24 17:27:12,737 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock [2020-09-24 17:27:12,737 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_sk [2020-09-24 17:27:12,738 INFO L138 BoogieDeclarations]: Found implementation of procedure register_pppox_proto [2020-09-24 17:27:12,739 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pppox_proto [2020-09-24 17:27:12,739 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_unbind_sock [2020-09-24 17:27:12,740 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_ioctl [2020-09-24 17:27:12,740 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_create [2020-09-24 17:27:12,741 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_init [2020-09-24 17:27:12,741 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_exit [2020-09-24 17:27:12,741 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:27:12,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2020-09-24 17:27:12,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2020-09-24 17:27:12,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2020-09-24 17:27:12,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2020-09-24 17:27:12,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2020-09-24 17:27:12,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2020-09-24 17:27:12,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-09-24 17:27:12,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get_1 [2020-09-24 17:27:12,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_2 [2020-09-24 17:27:12,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_module [2020-09-24 17:27:12,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-09-24 17:27:12,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_int [2020-09-24 17:27:12,746 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock_nested [2020-09-24 17:27:12,746 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2020-09-24 17:27:12,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_index [2020-09-24 17:27:12,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2020-09-24 17:27:12,746 INFO L138 BoogieDeclarations]: Found implementation of procedure release_sock [2020-09-24 17:27:12,746 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_register [2020-09-24 17:27:12,747 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_unregister [2020-09-24 17:27:12,747 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-09-24 17:27:12,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:27:12,747 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2020-09-24 17:27:12,747 INFO L130 BoogieDeclarations]: Found specification of procedure __request_module [2020-09-24 17:27:12,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get_1 [2020-09-24 17:27:12,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_2 [2020-09-24 17:27:12,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2020-09-24 17:27:12,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2020-09-24 17:27:12,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2020-09-24 17:27:12,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2020-09-24 17:27:12,749 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2020-09-24 17:27:12,749 INFO L130 BoogieDeclarations]: Found specification of procedure sock_register [2020-09-24 17:27:12,749 INFO L130 BoogieDeclarations]: Found specification of procedure sock_unregister [2020-09-24 17:27:12,749 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2020-09-24 17:27:12,749 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_index [2020-09-24 17:27:12,749 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock_nested [2020-09-24 17:27:12,749 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock [2020-09-24 17:27:12,750 INFO L130 BoogieDeclarations]: Found specification of procedure release_sock [2020-09-24 17:27:12,750 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_sk [2020-09-24 17:27:12,750 INFO L130 BoogieDeclarations]: Found specification of procedure register_pppox_proto [2020-09-24 17:27:12,750 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pppox_proto [2020-09-24 17:27:12,751 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_unbind_sock [2020-09-24 17:27:12,751 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_ioctl [2020-09-24 17:27:12,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 17:27:12,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 17:27:12,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 17:27:12,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 17:27:12,752 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-09-24 17:27:12,752 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_create [2020-09-24 17:27:12,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 17:27:12,752 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-09-24 17:27:12,752 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_init [2020-09-24 17:27:12,753 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_exit [2020-09-24 17:27:12,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-09-24 17:27:12,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-09-24 17:27:12,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:27:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:27:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2020-09-24 17:27:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_int [2020-09-24 17:27:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 17:27:12,755 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-09-24 17:27:12,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 17:27:12,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:27:12,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-24 17:27:12,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 17:27:12,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:27:13,160 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 17:27:13,289 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-09-24 17:27:13,290 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-09-24 17:27:13,290 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-09-24 17:27:13,290 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-09-24 17:27:13,292 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 17:27:13,366 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2020-09-24 17:27:13,366 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2020-09-24 17:27:13,482 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2020-09-24 17:27:13,641 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:27:13,641 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:27:13,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:27:13 BoogieIcfgContainer [2020-09-24 17:27:13,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:27:13,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:27:13,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:27:13,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:27:13,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:27:11" (1/3) ... [2020-09-24 17:27:13,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7149b3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:27:13, skipping insertion in model container [2020-09-24 17:27:13,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:27:12" (2/3) ... [2020-09-24 17:27:13,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7149b3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:27:13, skipping insertion in model container [2020-09-24 17:27:13,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:27:13" (3/3) ... [2020-09-24 17:27:13,657 INFO L109 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-net-pppox.ko.cil.out.i [2020-09-24 17:27:13,669 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:27:13,680 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:27:13,703 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:27:13,736 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:27:13,736 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:27:13,736 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:27:13,736 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:27:13,736 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:27:13,737 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:27:13,737 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:27:13,737 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:27:13,763 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-09-24 17:27:13,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 17:27:13,773 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:27:13,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:27:13,775 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:27:13,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:27:13,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1095303050, now seen corresponding path program 1 times [2020-09-24 17:27:13,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:27:13,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952362238] [2020-09-24 17:27:13,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:27:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:27:14,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:27:14,527 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:27:14,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 17:27:14,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:27:14,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-09-24 17:27:14,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:27:14,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:27:14,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 17:27:14,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 17:27:14,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:27:14,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:27:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:27:14,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:27:14,792 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:27:14,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 17:27:14,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:27:14,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 17:27:14,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:27:14,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:27:14,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:27:14,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 17:27:14,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:27:14,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 17:27:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:27:14,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:27:14,854 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:27:14,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:27:14,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:27:14,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 17:27:14,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:27:14,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:27:14,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:27:14,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 17:27:14,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:27:14,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 17:27:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:27:14,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:27:14,918 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:27:14,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 17:27:14,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:27:14,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 17:27:14,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:27:14,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:27:14,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:27:14,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:27:14,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:27:14,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 17:27:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:27:14,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:27:14,959 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:27:14,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:27:14,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:27:14,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 17:27:14,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:27:14,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:27:14,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:27:14,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:27:14,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:27:14,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:27:14,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952362238] [2020-09-24 17:27:14,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:27:14,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:27:15,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631599758] [2020-09-24 17:27:15,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:27:15,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:27:15,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:27:15,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:27:15,040 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-09-24 17:27:16,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:27:16,024 INFO L93 Difference]: Finished difference Result 426 states and 482 transitions. [2020-09-24 17:27:16,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:27:16,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-24 17:27:16,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:27:16,049 INFO L225 Difference]: With dead ends: 426 [2020-09-24 17:27:16,049 INFO L226 Difference]: Without dead ends: 291 [2020-09-24 17:27:16,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:27:16,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-09-24 17:27:16,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2020-09-24 17:27:16,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-09-24 17:27:16,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 313 transitions. [2020-09-24 17:27:16,160 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 313 transitions. Word has length 53 [2020-09-24 17:27:16,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:27:16,161 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 313 transitions. [2020-09-24 17:27:16,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:27:16,162 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 313 transitions. [2020-09-24 17:27:16,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-24 17:27:16,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:27:16,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:27:16,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:27:16,169 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:27:16,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:27:16,170 INFO L82 PathProgramCache]: Analyzing trace with hash 173654324, now seen corresponding path program 1 times [2020-09-24 17:27:16,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:27:16,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560346499] [2020-09-24 17:27:16,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:27:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:27:16,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:27:16,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:27:16,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:27:22,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking...