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 -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 11:56:37,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 11:56:37,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 11:56:37,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 11:56:37,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 11:56:37,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 11:56:37,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 11:56:37,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 11:56:37,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 11:56:37,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 11:56:37,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 11:56:37,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 11:56:37,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 11:56:37,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 11:56:37,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 11:56:37,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 11:56:37,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 11:56:37,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 11:56:37,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 11:56:37,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 11:56:37,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 11:56:37,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 11:56:37,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 11:56:37,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 11:56:37,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 11:56:37,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 11:56:37,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 11:56:37,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 11:56:37,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 11:56:37,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 11:56:37,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 11:56:37,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 11:56:37,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 11:56:37,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 11:56:37,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 11:56:37,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 11:56:37,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 11:56:37,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 11:56:37,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 11:56:37,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 11:56:37,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 11:56:37,863 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 11:56:37,880 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 11:56:37,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 11:56:37,881 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 11:56:37,881 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 11:56:37,882 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 11:56:37,882 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 11:56:37,883 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 11:56:37,883 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 11:56:37,883 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 11:56:37,883 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 11:56:37,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 11:56:37,885 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 11:56:37,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 11:56:37,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 11:56:37,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 11:56:37,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 11:56:37,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 11:56:37,886 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 11:56:37,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 11:56:37,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 11:56:37,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 11:56:37,887 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 11:56:37,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 11:56:37,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 11:56:37,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 11:56:37,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 11:56:37,888 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 11:56:37,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 11:56:37,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 11:56:37,889 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 11:56:37,946 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 11:56:37,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 11:56:37,964 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 11:56:37,966 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 11:56:37,967 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 11:56:37,968 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2019-09-10 11:56:38,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a29f4a1e/2da3bbab34eb49c2bd979ac5e08a1797/FLAG40401c254 [2019-09-10 11:56:38,979 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 11:56:38,980 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2019-09-10 11:56:39,016 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a29f4a1e/2da3bbab34eb49c2bd979ac5e08a1797/FLAG40401c254 [2019-09-10 11:56:39,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a29f4a1e/2da3bbab34eb49c2bd979ac5e08a1797 [2019-09-10 11:56:39,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 11:56:39,529 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 11:56:39,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 11:56:39,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 11:56:39,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 11:56:39,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:56:39" (1/1) ... [2019-09-10 11:56:39,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78f240ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:39, skipping insertion in model container [2019-09-10 11:56:39,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:56:39" (1/1) ... [2019-09-10 11:56:39,550 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 11:56:39,732 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 11:56:41,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 11:56:41,143 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 11:56:41,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 11:56:41,606 INFO L192 MainTranslator]: Completed translation [2019-09-10 11:56:41,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:41 WrapperNode [2019-09-10 11:56:41,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 11:56:41,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 11:56:41,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 11:56:41,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 11:56:41,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:41" (1/1) ... [2019-09-10 11:56:41,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:41" (1/1) ... [2019-09-10 11:56:41,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:41" (1/1) ... [2019-09-10 11:56:41,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:41" (1/1) ... [2019-09-10 11:56:41,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:41" (1/1) ... [2019-09-10 11:56:41,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:41" (1/1) ... [2019-09-10 11:56:41,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:41" (1/1) ... [2019-09-10 11:56:41,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 11:56:41,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 11:56:41,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 11:56:41,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 11:56:41,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-09-10 11:56:41,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 11:56:41,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 11:56:41,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2019-09-10 11:56:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-09-10 11:56:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-09-10 11:56:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-09-10 11:56:41,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-09-10 11:56:41,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-09-10 11:56:41,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-09-10 11:56:41,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-09-10 11:56:41,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-09-10 11:56:41,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-09-10 11:56:41,945 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock [2019-09-10 11:56:41,946 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_sk [2019-09-10 11:56:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure register_pppox_proto [2019-09-10 11:56:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pppox_proto [2019-09-10 11:56:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_unbind_sock [2019-09-10 11:56:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_ioctl [2019-09-10 11:56:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_create [2019-09-10 11:56:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_init [2019-09-10 11:56:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_exit [2019-09-10 11:56:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 11:56:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get_5 [2019-09-10 11:56:41,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_6 [2019-09-10 11:56:41,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-09-10 11:56:41,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-09-10 11:56:41,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-09-10 11:56:41,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-09-10 11:56:41,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-09-10 11:56:41,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2019-09-10 11:56:41,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2019-09-10 11:56:41,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2019-09-10 11:56:41,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2019-09-10 11:56:41,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2019-09-10 11:56:41,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-09-10 11:56:41,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2019-09-10 11:56:41,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_module [2019-09-10 11:56:41,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-09-10 11:56:41,953 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock_nested [2019-09-10 11:56:41,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_index [2019-09-10 11:56:41,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2019-09-10 11:56:41,954 INFO L138 BoogieDeclarations]: Found implementation of procedure release_sock [2019-09-10 11:56:41,954 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_register [2019-09-10 11:56:41,954 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_unregister [2019-09-10 11:56:41,954 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-09-10 11:56:41,955 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-09-10 11:56:41,955 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-09-10 11:56:41,955 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-09-10 11:56:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 11:56:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2019-09-10 11:56:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-09-10 11:56:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure __request_module [2019-09-10 11:56:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get_5 [2019-09-10 11:56:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_6 [2019-09-10 11:56:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2019-09-10 11:56:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2019-09-10 11:56:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 11:56:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-10 11:56:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 11:56:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-09-10 11:56:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-09-10 11:56:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 11:56:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-09-10 11:56:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 11:56:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-09-10 11:56:41,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-09-10 11:56:41,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-09-10 11:56:41,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-09-10 11:56:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-09-10 11:56:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-09-10 11:56:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-09-10 11:56:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-09-10 11:56:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-09-10 11:56:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure sock_register [2019-09-10 11:56:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure sock_unregister [2019-09-10 11:56:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2019-09-10 11:56:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_index [2019-09-10 11:56:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock_nested [2019-09-10 11:56:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock [2019-09-10 11:56:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure release_sock [2019-09-10 11:56:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_sk [2019-09-10 11:56:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure register_pppox_proto [2019-09-10 11:56:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pppox_proto [2019-09-10 11:56:41,967 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_unbind_sock [2019-09-10 11:56:41,967 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_ioctl [2019-09-10 11:56:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 11:56:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 11:56:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 11:56:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 11:56:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 11:56:41,970 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2019-09-10 11:56:41,970 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_create [2019-09-10 11:56:41,970 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-09-10 11:56:41,970 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_init [2019-09-10 11:56:41,971 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_exit [2019-09-10 11:56:41,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-09-10 11:56:41,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-09-10 11:56:41,971 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 11:56:41,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 11:56:41,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-09-10 11:56:41,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-09-10 11:56:41,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-09-10 11:56:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-09-10 11:56:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-09-10 11:56:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2019-09-10 11:56:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2019-09-10 11:56:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2019-09-10 11:56:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-09-10 11:56:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 11:56:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-09-10 11:56:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 11:56:41,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-10 11:56:41,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-10 11:56:41,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 11:56:42,940 INFO L684 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-09-10 11:56:42,973 INFO L684 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2019-09-10 11:56:43,423 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 11:56:43,424 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 11:56:43,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:56:43 BoogieIcfgContainer [2019-09-10 11:56:43,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 11:56:43,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 11:56:43,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 11:56:43,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 11:56:43,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:56:39" (1/3) ... [2019-09-10 11:56:43,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f525554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:56:43, skipping insertion in model container [2019-09-10 11:56:43,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:41" (2/3) ... [2019-09-10 11:56:43,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f525554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:56:43, skipping insertion in model container [2019-09-10 11:56:43,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:56:43" (3/3) ... [2019-09-10 11:56:43,439 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2019-09-10 11:56:43,448 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 11:56:43,458 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 11:56:43,475 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 11:56:43,508 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 11:56:43,508 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 11:56:43,509 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 11:56:43,509 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 11:56:43,509 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 11:56:43,509 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 11:56:43,509 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 11:56:43,510 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 11:56:43,532 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states. [2019-09-10 11:56:43,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-09-10 11:56:43,548 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 11:56:43,550 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 11:56:43,552 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 11:56:43,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 11:56:43,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1955102239, now seen corresponding path program 1 times [2019-09-10 11:56:43,562 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 11:56:43,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:56:43,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 11:56:43,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:56:43,666 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 11:56:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 11:56:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-09-10 11:56:44,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 11:56:44,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 11:56:44,236 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 11:56:44,246 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 11:56:44,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 11:56:44,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 11:56:44,271 INFO L87 Difference]: Start difference. First operand 141 states. Second operand 3 states. [2019-09-10 11:56:44,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 11:56:44,442 INFO L93 Difference]: Finished difference Result 206 states and 252 transitions. [2019-09-10 11:56:44,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 11:56:44,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2019-09-10 11:56:44,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 11:56:44,475 INFO L225 Difference]: With dead ends: 206 [2019-09-10 11:56:44,475 INFO L226 Difference]: Without dead ends: 191 [2019-09-10 11:56:44,481 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 11:56:44,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2019-09-10 11:56:44,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 188. [2019-09-10 11:56:44,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-09-10 11:56:44,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 229 transitions. [2019-09-10 11:56:44,620 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 229 transitions. Word has length 71 [2019-09-10 11:56:44,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 11:56:44,624 INFO L475 AbstractCegarLoop]: Abstraction has 188 states and 229 transitions. [2019-09-10 11:56:44,624 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 11:56:44,625 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 229 transitions. [2019-09-10 11:56:44,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-09-10 11:56:44,633 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 11:56:44,634 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 11:56:44,635 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 11:56:44,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 11:56:44,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1320089571, now seen corresponding path program 1 times [2019-09-10 11:56:44,635 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 11:56:44,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:56:44,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 11:56:44,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:56:44,651 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 11:56:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 11:56:44,883 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-09-10 11:56:44,883 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 11:56:44,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 11:56:44,884 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 11:56:44,893 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 11:56:44,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 11:56:44,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 11:56:44,894 INFO L87 Difference]: Start difference. First operand 188 states and 229 transitions. Second operand 3 states. [2019-09-10 11:56:44,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 11:56:44,936 INFO L93 Difference]: Finished difference Result 193 states and 232 transitions. [2019-09-10 11:56:44,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 11:56:44,937 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2019-09-10 11:56:44,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 11:56:44,940 INFO L225 Difference]: With dead ends: 193 [2019-09-10 11:56:44,941 INFO L226 Difference]: Without dead ends: 193 [2019-09-10 11:56:44,942 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 11:56:44,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2019-09-10 11:56:44,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 188. [2019-09-10 11:56:44,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-09-10 11:56:44,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 228 transitions. [2019-09-10 11:56:44,962 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 228 transitions. Word has length 76 [2019-09-10 11:56:44,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 11:56:44,963 INFO L475 AbstractCegarLoop]: Abstraction has 188 states and 228 transitions. [2019-09-10 11:56:44,963 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 11:56:44,963 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 228 transitions. [2019-09-10 11:56:44,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-09-10 11:56:44,969 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 11:56:44,969 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 11:56:44,969 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 11:56:44,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 11:56:44,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1377347873, now seen corresponding path program 1 times [2019-09-10 11:56:44,971 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 11:56:44,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:56:44,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 11:56:44,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:56:44,981 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 11:56:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 11:56:45,194 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-09-10 11:56:45,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 11:56:45,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 11:56:45,195 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 11:56:45,196 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 11:56:45,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 11:56:45,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 11:56:45,197 INFO L87 Difference]: Start difference. First operand 188 states and 228 transitions. Second operand 3 states. [2019-09-10 11:56:45,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 11:56:45,261 INFO L93 Difference]: Finished difference Result 338 states and 417 transitions. [2019-09-10 11:56:45,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 11:56:45,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2019-09-10 11:56:45,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 11:56:45,275 INFO L225 Difference]: With dead ends: 338 [2019-09-10 11:56:45,275 INFO L226 Difference]: Without dead ends: 328 [2019-09-10 11:56:45,276 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 11:56:45,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2019-09-10 11:56:45,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 324. [2019-09-10 11:56:45,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2019-09-10 11:56:45,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 403 transitions. [2019-09-10 11:56:45,327 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 403 transitions. Word has length 76 [2019-09-10 11:56:45,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 11:56:45,328 INFO L475 AbstractCegarLoop]: Abstraction has 324 states and 403 transitions. [2019-09-10 11:56:45,330 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 11:56:45,331 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 403 transitions. [2019-09-10 11:56:45,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-09-10 11:56:45,388 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 11:56:45,388 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 11:56:45,390 INFO L418 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 11:56:45,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 11:56:45,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1717934560, now seen corresponding path program 1 times [2019-09-10 11:56:45,392 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 11:56:45,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:56:45,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 11:56:45,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:56:45,398 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 11:56:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 11:56:45,506 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-09-10 11:56:45,506 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 11:56:45,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 11:56:45,507 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 11:56:45,507 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 11:56:45,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 11:56:45,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 11:56:45,508 INFO L87 Difference]: Start difference. First operand 324 states and 403 transitions. Second operand 3 states. [2019-09-10 11:56:45,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 11:56:45,546 INFO L93 Difference]: Finished difference Result 413 states and 515 transitions. [2019-09-10 11:56:45,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 11:56:45,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2019-09-10 11:56:45,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 11:56:45,553 INFO L225 Difference]: With dead ends: 413 [2019-09-10 11:56:45,553 INFO L226 Difference]: Without dead ends: 413 [2019-09-10 11:56:45,554 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 11:56:45,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2019-09-10 11:56:45,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 400. [2019-09-10 11:56:45,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2019-09-10 11:56:45,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 503 transitions. [2019-09-10 11:56:45,584 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 503 transitions. Word has length 90 [2019-09-10 11:56:45,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 11:56:45,585 INFO L475 AbstractCegarLoop]: Abstraction has 400 states and 503 transitions. [2019-09-10 11:56:45,585 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 11:56:45,585 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 503 transitions. [2019-09-10 11:56:45,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-09-10 11:56:45,588 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 11:56:45,589 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 11:56:45,589 INFO L418 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 11:56:45,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 11:56:45,590 INFO L82 PathProgramCache]: Analyzing trace with hash -2090797835, now seen corresponding path program 1 times [2019-09-10 11:56:45,590 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 11:56:45,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:56:45,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 11:56:45,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 11:56:45,595 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 11:56:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 11:56:46,049 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2019-09-10 11:56:46,135 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-10 11:56:46,135 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 11:56:46,136 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 11:56:46,139 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 110 with the following transitions: [2019-09-10 11:56:46,158 INFO L207 CegarAbsIntRunner]: [73], [75], [77], [80], [82], [84], [87], [90], [93], [96], [117], [120], [123], [135], [138], [141], [143], [146], [154], [187], [197], [198], [212], [213], [219], [220], [238], [239], [240], [242], [243], [256], [259], [262], [272], [312], [315], [320], [323], [327], [332], [334], [337], [345], [347], [371], [377], [378], [379], [381], [382], [393], [394], [395], [397], [398], [417], [418], [422], [424], [425], [438], [439], [440], [441], [442], [443], [444], [445], [446], [447], [448], [454], [455], [468], [469], [470], [472], [478], [479], [480], [481], [482], [490], [491], [492], [493], [498], [499], [500], [502], [503] [2019-09-10 11:56:46,237 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 11:56:46,237 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 11:56:46,321 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 11:56:46,323 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 51 root evaluator evaluations with a maximum evaluation depth of 0. Performed 51 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 98 variables. [2019-09-10 11:56:46,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 11:56:46,329 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 11:56:46,385 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-10 11:56:46,385 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 11:56:46,390 INFO L420 sIntCurrentIteration]: We unified 108 AI predicates to 108 [2019-09-10 11:56:46,390 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 11:56:46,391 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 11:56:46,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2019-09-10 11:56:46,392 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 11:56:46,393 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 11:56:46,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 11:56:46,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 11:56:46,394 INFO L87 Difference]: Start difference. First operand 400 states and 503 transitions. Second operand 2 states. [2019-09-10 11:56:46,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 11:56:46,395 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-10 11:56:46,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 11:56:46,395 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 109 [2019-09-10 11:56:46,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 11:56:46,396 INFO L225 Difference]: With dead ends: 2 [2019-09-10 11:56:46,396 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 11:56:46,396 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 11:56:46,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 11:56:46,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 11:56:46,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 11:56:46,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 11:56:46,397 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 109 [2019-09-10 11:56:46,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 11:56:46,397 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 11:56:46,398 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 11:56:46,398 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 11:56:46,398 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 11:56:46,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:56:46 BoogieIcfgContainer [2019-09-10 11:56:46,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 11:56:46,407 INFO L168 Benchmark]: Toolchain (without parser) took 6877.76 ms. Allocated memory was 132.6 MB in the beginning and 272.1 MB in the end (delta: 139.5 MB). Free memory was 79.6 MB in the beginning and 116.6 MB in the end (delta: -36.9 MB). Peak memory consumption was 102.5 MB. Max. memory is 7.1 GB. [2019-09-10 11:56:46,408 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 132.6 MB. Free memory was 105.9 MB in the beginning and 105.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-09-10 11:56:46,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2077.71 ms. Allocated memory was 132.6 MB in the beginning and 219.2 MB in the end (delta: 86.5 MB). Free memory was 79.4 MB in the beginning and 116.7 MB in the end (delta: -37.3 MB). Peak memory consumption was 55.9 MB. Max. memory is 7.1 GB. [2019-09-10 11:56:46,410 INFO L168 Benchmark]: Boogie Preprocessor took 232.64 ms. Allocated memory is still 219.2 MB. Free memory was 116.7 MB in the beginning and 110.6 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 7.1 GB. [2019-09-10 11:56:46,411 INFO L168 Benchmark]: RCFGBuilder took 1585.13 ms. Allocated memory was 219.2 MB in the beginning and 265.3 MB in the end (delta: 46.1 MB). Free memory was 110.6 MB in the beginning and 173.1 MB in the end (delta: -62.5 MB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. [2019-09-10 11:56:46,412 INFO L168 Benchmark]: TraceAbstraction took 2976.20 ms. Allocated memory was 265.3 MB in the beginning and 272.1 MB in the end (delta: 6.8 MB). Free memory was 171.3 MB in the beginning and 116.6 MB in the end (delta: 54.8 MB). Peak memory consumption was 61.6 MB. Max. memory is 7.1 GB. [2019-09-10 11:56:46,417 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 132.6 MB. Free memory was 105.9 MB in the beginning and 105.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2077.71 ms. Allocated memory was 132.6 MB in the beginning and 219.2 MB in the end (delta: 86.5 MB). Free memory was 79.4 MB in the beginning and 116.7 MB in the end (delta: -37.3 MB). Peak memory consumption was 55.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 232.64 ms. Allocated memory is still 219.2 MB. Free memory was 116.7 MB in the beginning and 110.6 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1585.13 ms. Allocated memory was 219.2 MB in the beginning and 265.3 MB in the end (delta: 46.1 MB). Free memory was 110.6 MB in the beginning and 173.1 MB in the end (delta: -62.5 MB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2976.20 ms. Allocated memory was 265.3 MB in the beginning and 272.1 MB in the end (delta: 6.8 MB). Free memory was 171.3 MB in the beginning and 116.6 MB in the end (delta: 54.8 MB). Peak memory consumption was 61.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6259]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 48 procedures, 261 locations, 1 error locations. SAFE Result, 2.9s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 644 SDtfs, 432 SDslu, 357 SDs, 0 SdLazy, 30 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=400occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 2.435185185185185 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 25 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 422 NumberOfCodeBlocks, 422 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 417 ConstructedInterpolants, 0 QuantifiedInterpolants, 53471 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 85/92 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...