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 0.1.24-673a906-m [2019-10-03 01:42:23,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 01:42:23,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 01:42:23,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-03 01:42:23,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-03 01:42:23,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-03 01:42:23,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-03 01:42:23,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-03 01:42:23,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-03 01:42:23,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-03 01:42:23,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-03 01:42:23,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-03 01:42:23,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 01:42:23,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 01:42:23,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 01:42:23,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 01:42:23,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 01:42:23,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 01:42:23,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 01:42:23,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 01:42:23,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 01:42:23,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 01:42:23,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 01:42:23,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 01:42:23,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-03 01:42:23,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-03 01:42:23,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-03 01:42:23,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-03 01:42:23,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-03 01:42:23,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-03 01:42:23,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-03 01:42:23,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-03 01:42:23,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-03 01:42:23,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-03 01:42:23,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-03 01:42:23,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-03 01:42:23,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-03 01:42:23,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-03 01:42:23,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 01:42:23,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 01:42:23,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 01:42:23,058 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 [2019-10-03 01:42:23,079 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 01:42:23,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 01:42:23,080 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 01:42:23,080 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 01:42:23,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 01:42:23,081 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 01:42:23,081 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 01:42:23,082 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 01:42:23,082 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 01:42:23,082 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 01:42:23,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 01:42:23,083 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 01:42:23,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 01:42:23,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 01:42:23,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 01:42:23,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 01:42:23,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 01:42:23,085 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 01:42:23,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 01:42:23,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 01:42:23,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 01:42:23,086 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 01:42:23,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 01:42:23,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 01:42:23,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 01:42:23,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 01:42:23,087 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 01:42:23,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 01:42:23,088 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 01:42:23,088 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 01:42:23,122 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 01:42:23,135 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 01:42:23,139 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 01:42:23,140 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 01:42:23,141 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 01:42:23,141 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2019-10-03 01:42:23,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b44ff0cda/35b06a67b0884468815b86fe11b29f65/FLAG4b7e443b9 [2019-10-03 01:42:23,868 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 01:42:23,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2019-10-03 01:42:23,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b44ff0cda/35b06a67b0884468815b86fe11b29f65/FLAG4b7e443b9 [2019-10-03 01:42:23,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b44ff0cda/35b06a67b0884468815b86fe11b29f65 [2019-10-03 01:42:23,993 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 01:42:23,994 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 01:42:23,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 01:42:23,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 01:42:24,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 01:42:24,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 01:42:23" (1/1) ... [2019-10-03 01:42:24,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cc63f8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 01:42:24, skipping insertion in model container [2019-10-03 01:42:24,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 01:42:23" (1/1) ... [2019-10-03 01:42:24,013 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 01:42:24,169 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 01:42:25,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 01:42:25,421 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 01:42:25,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 01:42:25,767 INFO L192 MainTranslator]: Completed translation [2019-10-03 01:42:25,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 01:42:25 WrapperNode [2019-10-03 01:42:25,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 01:42:25,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 01:42:25,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 01:42:25,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 01:42:25,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 01:42:25" (1/1) ... [2019-10-03 01:42:25,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 01:42:25" (1/1) ... [2019-10-03 01:42:25,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 01:42:25" (1/1) ... [2019-10-03 01:42:25,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 01:42:25" (1/1) ... [2019-10-03 01:42:25,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 01:42:25" (1/1) ... [2019-10-03 01:42:25,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 01:42:25" (1/1) ... [2019-10-03 01:42:25,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 01:42:25" (1/1) ... [2019-10-03 01:42:25,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 01:42:25,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 01:42:25,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 01:42:25,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 01:42:25,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 01:42:25" (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 [2019-10-03 01:42:26,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 01:42:26,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 01:42:26,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2019-10-03 01:42:26,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-03 01:42:26,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-03 01:42:26,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-03 01:42:26,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-03 01:42:26,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-03 01:42:26,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-03 01:42:26,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-03 01:42:26,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-03 01:42:26,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-03 01:42:26,070 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock [2019-10-03 01:42:26,071 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_sk [2019-10-03 01:42:26,071 INFO L138 BoogieDeclarations]: Found implementation of procedure register_pppox_proto [2019-10-03 01:42:26,071 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pppox_proto [2019-10-03 01:42:26,071 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_unbind_sock [2019-10-03 01:42:26,072 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_ioctl [2019-10-03 01:42:26,072 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_create [2019-10-03 01:42:26,075 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_init [2019-10-03 01:42:26,076 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_exit [2019-10-03 01:42:26,076 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 01:42:26,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get_5 [2019-10-03 01:42:26,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_6 [2019-10-03 01:42:26,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-03 01:42:26,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-03 01:42:26,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-03 01:42:26,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-03 01:42:26,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-03 01:42:26,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2019-10-03 01:42:26,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2019-10-03 01:42:26,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2019-10-03 01:42:26,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2019-10-03 01:42:26,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2019-10-03 01:42:26,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-03 01:42:26,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2019-10-03 01:42:26,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_module [2019-10-03 01:42:26,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-03 01:42:26,081 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock_nested [2019-10-03 01:42:26,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_index [2019-10-03 01:42:26,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2019-10-03 01:42:26,082 INFO L138 BoogieDeclarations]: Found implementation of procedure release_sock [2019-10-03 01:42:26,083 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_register [2019-10-03 01:42:26,084 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_unregister [2019-10-03 01:42:26,084 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-03 01:42:26,084 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-03 01:42:26,085 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-03 01:42:26,085 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-03 01:42:26,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 01:42:26,086 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2019-10-03 01:42:26,086 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-03 01:42:26,086 INFO L130 BoogieDeclarations]: Found specification of procedure __request_module [2019-10-03 01:42:26,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get_5 [2019-10-03 01:42:26,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_6 [2019-10-03 01:42:26,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2019-10-03 01:42:26,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2019-10-03 01:42:26,089 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-03 01:42:26,089 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-03 01:42:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-03 01:42:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-03 01:42:26,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-03 01:42:26,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-03 01:42:26,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-03 01:42:26,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-03 01:42:26,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-03 01:42:26,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-03 01:42:26,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-03 01:42:26,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-03 01:42:26,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-03 01:42:26,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-03 01:42:26,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-03 01:42:26,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-03 01:42:26,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-03 01:42:26,095 INFO L130 BoogieDeclarations]: Found specification of procedure sock_register [2019-10-03 01:42:26,095 INFO L130 BoogieDeclarations]: Found specification of procedure sock_unregister [2019-10-03 01:42:26,096 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2019-10-03 01:42:26,096 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_index [2019-10-03 01:42:26,096 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock_nested [2019-10-03 01:42:26,096 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock [2019-10-03 01:42:26,097 INFO L130 BoogieDeclarations]: Found specification of procedure release_sock [2019-10-03 01:42:26,097 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_sk [2019-10-03 01:42:26,098 INFO L130 BoogieDeclarations]: Found specification of procedure register_pppox_proto [2019-10-03 01:42:26,098 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pppox_proto [2019-10-03 01:42:26,098 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_unbind_sock [2019-10-03 01:42:26,098 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_ioctl [2019-10-03 01:42:26,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-03 01:42:26,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-03 01:42:26,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-03 01:42:26,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-03 01:42:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-03 01:42:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2019-10-03 01:42:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_create [2019-10-03 01:42:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-03 01:42:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_init [2019-10-03 01:42:26,102 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_exit [2019-10-03 01:42:26,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-03 01:42:26,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-03 01:42:26,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 01:42:26,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-03 01:42:26,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-03 01:42:26,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-03 01:42:26,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-03 01:42:26,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-03 01:42:26,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-03 01:42:26,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2019-10-03 01:42:26,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2019-10-03 01:42:26,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2019-10-03 01:42:26,104 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-03 01:42:26,104 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-03 01:42:26,104 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-03 01:42:26,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 01:42:26,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-03 01:42:26,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-03 01:42:26,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 01:42:26,952 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-03 01:42:26,978 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2019-10-03 01:42:27,309 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 01:42:27,310 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-03 01:42:27,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 01:42:27 BoogieIcfgContainer [2019-10-03 01:42:27,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 01:42:27,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 01:42:27,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 01:42:27,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 01:42:27,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 01:42:23" (1/3) ... [2019-10-03 01:42:27,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6353ffc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 01:42:27, skipping insertion in model container [2019-10-03 01:42:27,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 01:42:25" (2/3) ... [2019-10-03 01:42:27,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6353ffc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 01:42:27, skipping insertion in model container [2019-10-03 01:42:27,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 01:42:27" (3/3) ... [2019-10-03 01:42:27,326 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2019-10-03 01:42:27,336 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 01:42:27,347 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 01:42:27,365 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 01:42:27,395 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 01:42:27,395 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 01:42:27,395 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 01:42:27,395 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 01:42:27,395 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 01:42:27,396 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 01:42:27,397 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 01:42:27,399 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 01:42:27,423 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states. [2019-10-03 01:42:27,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-10-03 01:42:27,439 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 01:42:27,449 INFO L411 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] [2019-10-03 01:42:27,451 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 01:42:27,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 01:42:27,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1955102239, now seen corresponding path program 1 times [2019-10-03 01:42:27,457 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 01:42:27,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 01:42:27,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 01:42:27,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 01:42:27,564 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 01:42:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 01:42:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-03 01:42:28,054 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 01:42:28,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 01:42:28,055 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 01:42:28,061 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 01:42:28,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 01:42:28,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 01:42:28,081 INFO L87 Difference]: Start difference. First operand 141 states. Second operand 3 states. [2019-10-03 01:42:28,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 01:42:28,188 INFO L93 Difference]: Finished difference Result 206 states and 252 transitions. [2019-10-03 01:42:28,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 01:42:28,190 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2019-10-03 01:42:28,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 01:42:28,206 INFO L225 Difference]: With dead ends: 206 [2019-10-03 01:42:28,206 INFO L226 Difference]: Without dead ends: 191 [2019-10-03 01:42:28,208 INFO L640 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 [2019-10-03 01:42:28,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2019-10-03 01:42:28,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 188. [2019-10-03 01:42:28,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-10-03 01:42:28,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 229 transitions. [2019-10-03 01:42:28,276 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 229 transitions. Word has length 71 [2019-10-03 01:42:28,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 01:42:28,279 INFO L475 AbstractCegarLoop]: Abstraction has 188 states and 229 transitions. [2019-10-03 01:42:28,279 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 01:42:28,279 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 229 transitions. [2019-10-03 01:42:28,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-10-03 01:42:28,283 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 01:42:28,283 INFO L411 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] [2019-10-03 01:42:28,284 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 01:42:28,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 01:42:28,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1320089571, now seen corresponding path program 1 times [2019-10-03 01:42:28,284 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 01:42:28,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 01:42:28,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 01:42:28,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 01:42:28,294 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 01:42:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 01:42:28,472 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-03 01:42:28,473 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 01:42:28,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 01:42:28,473 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 01:42:28,478 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 01:42:28,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 01:42:28,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 01:42:28,479 INFO L87 Difference]: Start difference. First operand 188 states and 229 transitions. Second operand 3 states. [2019-10-03 01:42:28,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 01:42:28,515 INFO L93 Difference]: Finished difference Result 193 states and 232 transitions. [2019-10-03 01:42:28,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 01:42:28,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2019-10-03 01:42:28,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 01:42:28,519 INFO L225 Difference]: With dead ends: 193 [2019-10-03 01:42:28,519 INFO L226 Difference]: Without dead ends: 193 [2019-10-03 01:42:28,520 INFO L640 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 [2019-10-03 01:42:28,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2019-10-03 01:42:28,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 188. [2019-10-03 01:42:28,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-10-03 01:42:28,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 228 transitions. [2019-10-03 01:42:28,535 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 228 transitions. Word has length 76 [2019-10-03 01:42:28,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 01:42:28,536 INFO L475 AbstractCegarLoop]: Abstraction has 188 states and 228 transitions. [2019-10-03 01:42:28,536 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 01:42:28,536 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 228 transitions. [2019-10-03 01:42:28,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-10-03 01:42:28,538 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 01:42:28,538 INFO L411 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] [2019-10-03 01:42:28,539 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 01:42:28,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 01:42:28,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1377347873, now seen corresponding path program 1 times [2019-10-03 01:42:28,539 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 01:42:28,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 01:42:28,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 01:42:28,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 01:42:28,547 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 01:42:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 01:42:28,731 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-03 01:42:28,731 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 01:42:28,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 01:42:28,732 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 01:42:28,732 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 01:42:28,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 01:42:28,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 01:42:28,733 INFO L87 Difference]: Start difference. First operand 188 states and 228 transitions. Second operand 3 states. [2019-10-03 01:42:28,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 01:42:28,777 INFO L93 Difference]: Finished difference Result 338 states and 417 transitions. [2019-10-03 01:42:28,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 01:42:28,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2019-10-03 01:42:28,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 01:42:28,783 INFO L225 Difference]: With dead ends: 338 [2019-10-03 01:42:28,784 INFO L226 Difference]: Without dead ends: 328 [2019-10-03 01:42:28,784 INFO L640 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 [2019-10-03 01:42:28,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2019-10-03 01:42:28,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 324. [2019-10-03 01:42:28,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2019-10-03 01:42:28,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 403 transitions. [2019-10-03 01:42:28,857 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 403 transitions. Word has length 76 [2019-10-03 01:42:28,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 01:42:28,857 INFO L475 AbstractCegarLoop]: Abstraction has 324 states and 403 transitions. [2019-10-03 01:42:28,857 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 01:42:28,858 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 403 transitions. [2019-10-03 01:42:28,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-03 01:42:28,863 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 01:42:28,863 INFO L411 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] [2019-10-03 01:42:28,864 INFO L418 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 01:42:28,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 01:42:28,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1717934560, now seen corresponding path program 1 times [2019-10-03 01:42:28,865 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 01:42:28,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 01:42:28,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 01:42:28,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 01:42:28,872 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 01:42:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 01:42:29,006 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-03 01:42:29,007 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 01:42:29,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 01:42:29,009 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 01:42:29,010 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 01:42:29,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 01:42:29,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 01:42:29,011 INFO L87 Difference]: Start difference. First operand 324 states and 403 transitions. Second operand 3 states. [2019-10-03 01:42:29,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 01:42:29,055 INFO L93 Difference]: Finished difference Result 413 states and 515 transitions. [2019-10-03 01:42:29,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 01:42:29,057 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2019-10-03 01:42:29,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 01:42:29,061 INFO L225 Difference]: With dead ends: 413 [2019-10-03 01:42:29,061 INFO L226 Difference]: Without dead ends: 413 [2019-10-03 01:42:29,062 INFO L640 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 [2019-10-03 01:42:29,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2019-10-03 01:42:29,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 400. [2019-10-03 01:42:29,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2019-10-03 01:42:29,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 503 transitions. [2019-10-03 01:42:29,108 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 503 transitions. Word has length 90 [2019-10-03 01:42:29,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 01:42:29,111 INFO L475 AbstractCegarLoop]: Abstraction has 400 states and 503 transitions. [2019-10-03 01:42:29,111 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 01:42:29,112 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 503 transitions. [2019-10-03 01:42:29,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-10-03 01:42:29,119 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 01:42:29,119 INFO L411 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] [2019-10-03 01:42:29,122 INFO L418 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 01:42:29,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 01:42:29,123 INFO L82 PathProgramCache]: Analyzing trace with hash -2090797835, now seen corresponding path program 1 times [2019-10-03 01:42:29,123 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 01:42:29,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 01:42:29,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 01:42:29,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 01:42:29,129 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 01:42:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 01:42:29,557 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-03 01:42:29,557 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 01:42:29,558 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 01:42:29,559 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 110 with the following transitions: [2019-10-03 01:42:29,563 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] [2019-10-03 01:42:29,625 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 01:42:29,626 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 01:42:29,711 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 01:42:29,713 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. [2019-10-03 01:42:29,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 01:42:29,718 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 01:42:29,808 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-10-03 01:42:29,809 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 01:42:29,821 INFO L420 sIntCurrentIteration]: We unified 108 AI predicates to 108 [2019-10-03 01:42:29,821 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 01:42:29,822 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 01:42:29,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2019-10-03 01:42:29,822 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 01:42:29,824 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 01:42:29,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 01:42:29,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 01:42:29,825 INFO L87 Difference]: Start difference. First operand 400 states and 503 transitions. Second operand 2 states. [2019-10-03 01:42:29,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 01:42:29,825 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-10-03 01:42:29,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 01:42:29,825 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 109 [2019-10-03 01:42:29,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 01:42:29,826 INFO L225 Difference]: With dead ends: 2 [2019-10-03 01:42:29,826 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 01:42:29,827 INFO L640 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 [2019-10-03 01:42:29,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 01:42:29,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 01:42:29,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 01:42:29,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 01:42:29,828 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 109 [2019-10-03 01:42:29,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 01:42:29,829 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 01:42:29,829 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 01:42:29,829 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 01:42:29,829 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 01:42:29,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 01:42:29 BoogieIcfgContainer [2019-10-03 01:42:29,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 01:42:29,841 INFO L168 Benchmark]: Toolchain (without parser) took 5842.63 ms. Allocated memory was 131.1 MB in the beginning and 286.3 MB in the end (delta: 155.2 MB). Free memory was 78.4 MB in the beginning and 122.0 MB in the end (delta: -43.6 MB). Peak memory consumption was 111.6 MB. Max. memory is 7.1 GB. [2019-10-03 01:42:29,842 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 131.1 MB. Free memory was 105.2 MB in the beginning and 104.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-03 01:42:29,845 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1775.00 ms. Allocated memory was 131.1 MB in the beginning and 225.4 MB in the end (delta: 94.4 MB). Free memory was 78.2 MB in the beginning and 114.1 MB in the end (delta: -35.9 MB). Peak memory consumption was 63.7 MB. Max. memory is 7.1 GB. [2019-10-03 01:42:29,846 INFO L168 Benchmark]: Boogie Preprocessor took 196.07 ms. Allocated memory is still 225.4 MB. Free memory was 114.1 MB in the beginning and 108.0 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 7.1 GB. [2019-10-03 01:42:29,848 INFO L168 Benchmark]: RCFGBuilder took 1344.98 ms. Allocated memory was 225.4 MB in the beginning and 280.0 MB in the end (delta: 54.5 MB). Free memory was 108.0 MB in the beginning and 176.2 MB in the end (delta: -68.2 MB). Peak memory consumption was 55.1 MB. Max. memory is 7.1 GB. [2019-10-03 01:42:29,849 INFO L168 Benchmark]: TraceAbstraction took 2520.09 ms. Allocated memory was 280.0 MB in the beginning and 286.3 MB in the end (delta: 6.3 MB). Free memory was 174.3 MB in the beginning and 122.0 MB in the end (delta: 52.3 MB). Peak memory consumption was 58.6 MB. Max. memory is 7.1 GB. [2019-10-03 01:42:29,860 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 131.1 MB. Free memory was 105.2 MB in the beginning and 104.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1775.00 ms. Allocated memory was 131.1 MB in the beginning and 225.4 MB in the end (delta: 94.4 MB). Free memory was 78.2 MB in the beginning and 114.1 MB in the end (delta: -35.9 MB). Peak memory consumption was 63.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 196.07 ms. Allocated memory is still 225.4 MB. Free memory was 114.1 MB in the beginning and 108.0 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1344.98 ms. Allocated memory was 225.4 MB in the beginning and 280.0 MB in the end (delta: 54.5 MB). Free memory was 108.0 MB in the beginning and 176.2 MB in the end (delta: -68.2 MB). Peak memory consumption was 55.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2520.09 ms. Allocated memory was 280.0 MB in the beginning and 286.3 MB in the end (delta: 6.3 MB). Free memory was 174.3 MB in the beginning and 122.0 MB in the end (delta: 52.3 MB). Peak memory consumption was 58.6 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, 2.4s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 644 SDtfs, 432 SDslu, 357 SDs, 0 SdLazy, 30 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 25 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 422 NumberOfCodeBlocks, 422 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 417 ConstructedInterpolants, 0 QuantifiedInterpolants, 51635 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...