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-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:10:34,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:10:34,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:10:34,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:10:34,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:10:34,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:10:34,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:10:34,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:10:35,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:10:35,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:10:35,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:10:35,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:10:35,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:10:35,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:10:35,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:10:35,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:10:35,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:10:35,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:10:35,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:10:35,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:10:35,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:10:35,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:10:35,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:10:35,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:10:35,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:10:35,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:10:35,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:10:35,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:10:35,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:10:35,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:10:35,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:10:35,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:10:35,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:10:35,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:10:35,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:10:35,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:10:35,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:10:35,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:10:35,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:10:35,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:10:35,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:10:35,029 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 [2019-09-16 17:10:35,053 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:10:35,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:10:35,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:10:35,055 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:10:35,056 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:10:35,056 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:10:35,056 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:10:35,057 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:10:35,057 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:10:35,057 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:10:35,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:10:35,059 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:10:35,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:10:35,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:10:35,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:10:35,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:10:35,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:10:35,060 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:10:35,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:10:35,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:10:35,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:10:35,061 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:10:35,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:10:35,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:10:35,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:10:35,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:10:35,062 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:10:35,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:10:35,062 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:10:35,063 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:10:35,090 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:10:35,103 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:10:35,107 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:10:35,108 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:10:35,109 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:10:35,109 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i [2019-09-16 17:10:35,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27eab559e/a1bde167d3214792b2cda607aa7782cd/FLAG0c44de9b8 [2019-09-16 17:10:35,842 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:10:35,843 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i [2019-09-16 17:10:35,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27eab559e/a1bde167d3214792b2cda607aa7782cd/FLAG0c44de9b8 [2019-09-16 17:10:36,002 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27eab559e/a1bde167d3214792b2cda607aa7782cd [2019-09-16 17:10:36,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:10:36,013 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:10:36,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:10:36,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:10:36,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:10:36,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:10:36" (1/1) ... [2019-09-16 17:10:36,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fb15b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:36, skipping insertion in model container [2019-09-16 17:10:36,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:10:36" (1/1) ... [2019-09-16 17:10:36,030 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:10:36,132 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:10:36,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:10:37,007 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:10:37,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:10:37,222 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:10:37,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:37 WrapperNode [2019-09-16 17:10:37,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:10:37,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:10:37,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:10:37,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:10:37,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:37" (1/1) ... [2019-09-16 17:10:37,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:37" (1/1) ... [2019-09-16 17:10:37,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:37" (1/1) ... [2019-09-16 17:10:37,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:37" (1/1) ... [2019-09-16 17:10:37,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:37" (1/1) ... [2019-09-16 17:10:37,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:37" (1/1) ... [2019-09-16 17:10:37,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:37" (1/1) ... [2019-09-16 17:10:37,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:10:37,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:10:37,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:10:37,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:10:37,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:37" (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 [2019-09-16 17:10:37,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:10:37,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:10:37,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2019-09-16 17:10:37,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2019-09-16 17:10:37,454 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock [2019-09-16 17:10:37,454 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_sk [2019-09-16 17:10:37,454 INFO L138 BoogieDeclarations]: Found implementation of procedure register_pppox_proto [2019-09-16 17:10:37,454 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pppox_proto [2019-09-16 17:10:37,455 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_unbind_sock [2019-09-16 17:10:37,455 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_ioctl [2019-09-16 17:10:37,455 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_create [2019-09-16 17:10:37,456 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_init [2019-09-16 17:10:37,456 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_exit [2019-09-16 17:10:37,457 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:10:37,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2019-09-16 17:10:37,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2019-09-16 17:10:37,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2019-09-16 17:10:37,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2019-09-16 17:10:37,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2019-09-16 17:10:37,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2019-09-16 17:10:37,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-09-16 17:10:37,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get_1 [2019-09-16 17:10:37,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_2 [2019-09-16 17:10:37,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_module [2019-09-16 17:10:37,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-09-16 17:10:37,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_int [2019-09-16 17:10:37,461 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock_nested [2019-09-16 17:10:37,461 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-09-16 17:10:37,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_index [2019-09-16 17:10:37,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2019-09-16 17:10:37,462 INFO L138 BoogieDeclarations]: Found implementation of procedure release_sock [2019-09-16 17:10:37,462 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_register [2019-09-16 17:10:37,462 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_unregister [2019-09-16 17:10:37,462 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-09-16 17:10:37,463 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-09-16 17:10:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:10:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-09-16 17:10:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure __request_module [2019-09-16 17:10:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get_1 [2019-09-16 17:10:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_2 [2019-09-16 17:10:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2019-09-16 17:10:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2019-09-16 17:10:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2019-09-16 17:10:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2019-09-16 17:10:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2019-09-16 17:10:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure sock_register [2019-09-16 17:10:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure sock_unregister [2019-09-16 17:10:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2019-09-16 17:10:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_index [2019-09-16 17:10:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock_nested [2019-09-16 17:10:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock [2019-09-16 17:10:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure release_sock [2019-09-16 17:10:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_sk [2019-09-16 17:10:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure register_pppox_proto [2019-09-16 17:10:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pppox_proto [2019-09-16 17:10:37,469 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_unbind_sock [2019-09-16 17:10:37,469 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_ioctl [2019-09-16 17:10:37,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:10:37,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:10:37,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:10:37,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:10:37,470 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2019-09-16 17:10:37,471 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_create [2019-09-16 17:10:37,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:10:37,472 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2019-09-16 17:10:37,472 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_init [2019-09-16 17:10:37,472 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_exit [2019-09-16 17:10:37,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-09-16 17:10:37,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-09-16 17:10:37,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:10:37,473 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:10:37,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2019-09-16 17:10:37,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_int [2019-09-16 17:10:37,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-09-16 17:10:37,475 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-09-16 17:10:37,475 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:10:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-09-16 17:10:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:10:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:10:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-16 17:10:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:10:37,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:10:38,086 WARN L730 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-09-16 17:10:38,179 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2019-09-16 17:10:38,179 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2019-09-16 17:10:38,179 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-09-16 17:10:38,180 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-09-16 17:10:38,181 WARN L730 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-09-16 17:10:38,202 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2019-09-16 17:10:38,203 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2019-09-16 17:10:38,293 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2019-09-16 17:10:38,444 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:10:38,445 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-16 17:10:38,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:10:38 BoogieIcfgContainer [2019-09-16 17:10:38,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:10:38,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:10:38,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:10:38,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:10:38,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:10:36" (1/3) ... [2019-09-16 17:10:38,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3671df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:10:38, skipping insertion in model container [2019-09-16 17:10:38,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:10:37" (2/3) ... [2019-09-16 17:10:38,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3671df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:10:38, skipping insertion in model container [2019-09-16 17:10:38,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:10:38" (3/3) ... [2019-09-16 17:10:38,455 INFO L109 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-net-pppox.ko.cil.out.i [2019-09-16 17:10:38,465 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:10:38,473 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:10:38,490 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:10:38,519 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:10:38,519 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:10:38,520 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:10:38,520 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:10:38,520 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:10:38,520 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:10:38,520 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:10:38,520 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:10:38,538 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2019-09-16 17:10:38,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-16 17:10:38,583 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:38,586 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:10:38,588 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:38,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:38,594 INFO L82 PathProgramCache]: Analyzing trace with hash 331943302, now seen corresponding path program 1 times [2019-09-16 17:10:38,596 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:38,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:38,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:38,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:38,660 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:38,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:10:38,988 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:38,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:10:38,988 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:38,994 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:10:39,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:10:39,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:10:39,014 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 3 states. [2019-09-16 17:10:39,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:39,105 INFO L93 Difference]: Finished difference Result 151 states and 175 transitions. [2019-09-16 17:10:39,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:10:39,109 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-09-16 17:10:39,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:39,126 INFO L225 Difference]: With dead ends: 151 [2019-09-16 17:10:39,126 INFO L226 Difference]: Without dead ends: 135 [2019-09-16 17:10:39,128 INFO L636 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 [2019-09-16 17:10:39,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2019-09-16 17:10:39,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 132. [2019-09-16 17:10:39,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2019-09-16 17:10:39,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2019-09-16 17:10:39,185 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 24 [2019-09-16 17:10:39,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:39,185 INFO L475 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2019-09-16 17:10:39,185 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:10:39,185 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2019-09-16 17:10:39,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-09-16 17:10:39,188 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:39,189 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:10:39,189 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:39,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:39,189 INFO L82 PathProgramCache]: Analyzing trace with hash 221804231, now seen corresponding path program 1 times [2019-09-16 17:10:39,189 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:39,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:39,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:39,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:39,197 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:39,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:10:39,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:39,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:10:39,454 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:39,458 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:10:39,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:10:39,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:10:39,463 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand 7 states. [2019-09-16 17:10:39,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:39,588 INFO L93 Difference]: Finished difference Result 129 states and 150 transitions. [2019-09-16 17:10:39,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:10:39,590 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-09-16 17:10:39,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:39,595 INFO L225 Difference]: With dead ends: 129 [2019-09-16 17:10:39,595 INFO L226 Difference]: Without dead ends: 129 [2019-09-16 17:10:39,597 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:10:39,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2019-09-16 17:10:39,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 123. [2019-09-16 17:10:39,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2019-09-16 17:10:39,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2019-09-16 17:10:39,630 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 56 [2019-09-16 17:10:39,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:39,631 INFO L475 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2019-09-16 17:10:39,631 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:10:39,631 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2019-09-16 17:10:39,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-09-16 17:10:39,637 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:39,637 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:10:39,637 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:39,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:39,638 INFO L82 PathProgramCache]: Analyzing trace with hash 427901411, now seen corresponding path program 1 times [2019-09-16 17:10:39,638 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:39,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:39,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:39,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:39,652 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:39,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:10:39,865 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:39,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:10:39,865 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:39,867 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:10:39,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:10:39,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:10:39,867 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand 7 states. [2019-09-16 17:10:40,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:40,353 INFO L93 Difference]: Finished difference Result 207 states and 239 transitions. [2019-09-16 17:10:40,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-16 17:10:40,354 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2019-09-16 17:10:40,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:40,358 INFO L225 Difference]: With dead ends: 207 [2019-09-16 17:10:40,361 INFO L226 Difference]: Without dead ends: 207 [2019-09-16 17:10:40,362 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-09-16 17:10:40,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2019-09-16 17:10:40,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 190. [2019-09-16 17:10:40,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2019-09-16 17:10:40,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 224 transitions. [2019-09-16 17:10:40,409 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 224 transitions. Word has length 62 [2019-09-16 17:10:40,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:40,409 INFO L475 AbstractCegarLoop]: Abstraction has 190 states and 224 transitions. [2019-09-16 17:10:40,410 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:10:40,410 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 224 transitions. [2019-09-16 17:10:40,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-16 17:10:40,415 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:40,415 INFO L407 BasicCegarLoop]: trace histogram [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] [2019-09-16 17:10:40,415 INFO L418 AbstractCegarLoop]: === Iteration 4 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:40,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:40,416 INFO L82 PathProgramCache]: Analyzing trace with hash 2067307490, now seen corresponding path program 1 times [2019-09-16 17:10:40,416 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:40,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:40,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:40,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:40,425 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:40,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:10:40,553 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:40,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:10:40,554 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:40,554 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:10:40,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:10:40,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:10:40,556 INFO L87 Difference]: Start difference. First operand 190 states and 224 transitions. Second operand 7 states. [2019-09-16 17:10:40,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:40,597 INFO L93 Difference]: Finished difference Result 193 states and 225 transitions. [2019-09-16 17:10:40,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:10:40,598 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2019-09-16 17:10:40,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:40,600 INFO L225 Difference]: With dead ends: 193 [2019-09-16 17:10:40,601 INFO L226 Difference]: Without dead ends: 193 [2019-09-16 17:10:40,601 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:10:40,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2019-09-16 17:10:40,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 190. [2019-09-16 17:10:40,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2019-09-16 17:10:40,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 222 transitions. [2019-09-16 17:10:40,625 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 222 transitions. Word has length 66 [2019-09-16 17:10:40,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:40,625 INFO L475 AbstractCegarLoop]: Abstraction has 190 states and 222 transitions. [2019-09-16 17:10:40,625 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:10:40,626 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 222 transitions. [2019-09-16 17:10:40,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-09-16 17:10:40,628 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:40,628 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:10:40,628 INFO L418 AbstractCegarLoop]: === Iteration 5 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:40,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:40,629 INFO L82 PathProgramCache]: Analyzing trace with hash 110369607, now seen corresponding path program 1 times [2019-09-16 17:10:40,629 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:40,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:40,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:40,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:40,634 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:40,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:10:40,830 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:40,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 17:10:40,830 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:40,832 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 17:10:40,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 17:10:40,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:10:40,833 INFO L87 Difference]: Start difference. First operand 190 states and 222 transitions. Second operand 5 states. [2019-09-16 17:10:40,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:40,984 INFO L93 Difference]: Finished difference Result 205 states and 237 transitions. [2019-09-16 17:10:40,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-16 17:10:40,985 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2019-09-16 17:10:40,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:40,989 INFO L225 Difference]: With dead ends: 205 [2019-09-16 17:10:40,990 INFO L226 Difference]: Without dead ends: 205 [2019-09-16 17:10:40,991 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:10:40,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2019-09-16 17:10:41,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 196. [2019-09-16 17:10:41,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2019-09-16 17:10:41,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 228 transitions. [2019-09-16 17:10:41,013 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 228 transitions. Word has length 81 [2019-09-16 17:10:41,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:41,014 INFO L475 AbstractCegarLoop]: Abstraction has 196 states and 228 transitions. [2019-09-16 17:10:41,014 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 17:10:41,014 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 228 transitions. [2019-09-16 17:10:41,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-09-16 17:10:41,019 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:41,019 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:10:41,020 INFO L418 AbstractCegarLoop]: === Iteration 6 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:41,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:41,023 INFO L82 PathProgramCache]: Analyzing trace with hash 554270281, now seen corresponding path program 1 times [2019-09-16 17:10:41,024 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:41,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:41,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:41,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:41,030 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:41,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:10:41,514 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:41,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-09-16 17:10:41,515 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:41,515 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-16 17:10:41,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-16 17:10:41,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2019-09-16 17:10:41,516 INFO L87 Difference]: Start difference. First operand 196 states and 228 transitions. Second operand 14 states. [2019-09-16 17:10:42,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:42,029 INFO L93 Difference]: Finished difference Result 176 states and 194 transitions. [2019-09-16 17:10:42,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-16 17:10:42,030 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 81 [2019-09-16 17:10:42,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:42,032 INFO L225 Difference]: With dead ends: 176 [2019-09-16 17:10:42,032 INFO L226 Difference]: Without dead ends: 168 [2019-09-16 17:10:42,032 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2019-09-16 17:10:42,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-09-16 17:10:42,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 148. [2019-09-16 17:10:42,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-09-16 17:10:42,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 166 transitions. [2019-09-16 17:10:42,040 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 166 transitions. Word has length 81 [2019-09-16 17:10:42,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:42,040 INFO L475 AbstractCegarLoop]: Abstraction has 148 states and 166 transitions. [2019-09-16 17:10:42,040 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-16 17:10:42,040 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 166 transitions. [2019-09-16 17:10:42,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-09-16 17:10:42,042 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:42,042 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:10:42,042 INFO L418 AbstractCegarLoop]: === Iteration 7 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:42,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:42,043 INFO L82 PathProgramCache]: Analyzing trace with hash -128539967, now seen corresponding path program 1 times [2019-09-16 17:10:42,043 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:42,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:42,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:42,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:42,047 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:42,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-16 17:10:42,256 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:42,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-16 17:10:42,257 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:42,258 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-16 17:10:42,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-16 17:10:42,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:10:42,259 INFO L87 Difference]: Start difference. First operand 148 states and 166 transitions. Second operand 9 states. [2019-09-16 17:10:42,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:42,487 INFO L93 Difference]: Finished difference Result 147 states and 164 transitions. [2019-09-16 17:10:42,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-16 17:10:42,488 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2019-09-16 17:10:42,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:42,489 INFO L225 Difference]: With dead ends: 147 [2019-09-16 17:10:42,489 INFO L226 Difference]: Without dead ends: 138 [2019-09-16 17:10:42,490 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2019-09-16 17:10:42,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2019-09-16 17:10:42,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2019-09-16 17:10:42,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-09-16 17:10:42,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 155 transitions. [2019-09-16 17:10:42,496 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 155 transitions. Word has length 83 [2019-09-16 17:10:42,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:42,497 INFO L475 AbstractCegarLoop]: Abstraction has 138 states and 155 transitions. [2019-09-16 17:10:42,497 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-16 17:10:42,497 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 155 transitions. [2019-09-16 17:10:42,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-16 17:10:42,499 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:42,499 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:10:42,500 INFO L418 AbstractCegarLoop]: === Iteration 8 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:42,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:42,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1482509601, now seen corresponding path program 1 times [2019-09-16 17:10:42,500 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:42,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:42,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:42,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:42,504 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:42,620 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-16 17:10:42,620 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:42,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:10:42,620 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:42,621 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:10:42,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:10:42,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:10:42,622 INFO L87 Difference]: Start difference. First operand 138 states and 155 transitions. Second operand 6 states. [2019-09-16 17:10:42,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:42,811 INFO L93 Difference]: Finished difference Result 135 states and 152 transitions. [2019-09-16 17:10:42,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:10:42,812 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2019-09-16 17:10:42,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:42,813 INFO L225 Difference]: With dead ends: 135 [2019-09-16 17:10:42,813 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:10:42,814 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:10:42,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:10:42,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:10:42,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:10:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:10:42,814 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 112 [2019-09-16 17:10:42,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:42,815 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:10:42,815 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:10:42,815 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:10:42,815 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:10:42,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:10:42 BoogieIcfgContainer [2019-09-16 17:10:42,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:10:42,823 INFO L168 Benchmark]: Toolchain (without parser) took 6809.18 ms. Allocated memory was 137.9 MB in the beginning and 356.5 MB in the end (delta: 218.6 MB). Free memory was 78.9 MB in the beginning and 250.4 MB in the end (delta: -171.5 MB). Peak memory consumption was 47.2 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:42,824 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 103.8 MB in the beginning and 103.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:10:42,825 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1209.81 ms. Allocated memory was 137.9 MB in the beginning and 213.9 MB in the end (delta: 76.0 MB). Free memory was 78.7 MB in the beginning and 136.7 MB in the end (delta: -58.0 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:42,827 INFO L168 Benchmark]: Boogie Preprocessor took 123.12 ms. Allocated memory is still 213.9 MB. Free memory was 136.7 MB in the beginning and 132.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:42,828 INFO L168 Benchmark]: RCFGBuilder took 1098.93 ms. Allocated memory is still 213.9 MB. Free memory was 132.4 MB in the beginning and 78.6 MB in the end (delta: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:42,828 INFO L168 Benchmark]: TraceAbstraction took 4372.89 ms. Allocated memory was 213.9 MB in the beginning and 356.5 MB in the end (delta: 142.6 MB). Free memory was 78.6 MB in the beginning and 250.4 MB in the end (delta: -171.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-16 17:10:42,835 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 103.8 MB in the beginning and 103.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1209.81 ms. Allocated memory was 137.9 MB in the beginning and 213.9 MB in the end (delta: 76.0 MB). Free memory was 78.7 MB in the beginning and 136.7 MB in the end (delta: -58.0 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.12 ms. Allocated memory is still 213.9 MB. Free memory was 136.7 MB in the beginning and 132.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1098.93 ms. Allocated memory is still 213.9 MB. Free memory was 132.4 MB in the beginning and 78.6 MB in the end (delta: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4372.89 ms. Allocated memory was 213.9 MB in the beginning and 356.5 MB in the end (delta: 142.6 MB). Free memory was 78.6 MB in the beginning and 250.4 MB in the end (delta: -171.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4984]: 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 35 procedures, 175 locations, 1 error locations. SAFE Result, 4.3s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 1.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 750 SDtfs, 602 SDslu, 2545 SDs, 0 SdLazy, 667 SolverSat, 223 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=196occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 58 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 565 NumberOfCodeBlocks, 565 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 557 ConstructedInterpolants, 0 QuantifiedInterpolants, 145000 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 48/48 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...