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/list-ext2-properties/simple_and_skiplist_2lvl-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:28:53,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:28:53,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:28:53,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:28:53,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:28:53,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:28:53,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:28:53,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:28:53,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:28:53,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:28:53,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:28:53,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:28:53,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:28:53,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:28:53,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:28:53,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:28:53,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:28:53,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:28:53,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:28:53,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:28:53,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:28:53,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:28:53,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:28:53,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:28:53,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:28:53,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:28:53,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:28:53,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:28:53,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:28:53,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:28:53,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:28:53,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:28:53,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:28:53,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:28:53,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:28:53,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:28:53,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:28:53,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:28:53,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:28:53,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:28:53,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:28:53,962 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 [2019-09-20 13:28:53,976 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:28:53,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:28:53,977 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:28:53,977 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:28:53,978 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:28:53,978 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:28:53,978 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:28:53,978 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:28:53,979 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:28:53,979 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:28:53,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:28:53,980 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:28:53,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:28:53,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:28:53,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:28:53,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:28:53,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:28:53,981 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:28:53,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:28:53,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:28:53,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:28:53,982 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:28:53,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:28:53,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:28:53,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:28:53,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:28:53,983 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:28:53,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:28:53,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:28:53,983 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:28:54,018 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:28:54,034 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:28:54,037 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:28:54,039 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:28:54,039 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:28:54,040 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/simple_and_skiplist_2lvl-2.i [2019-09-20 13:28:54,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f93367c26/f6a4b09288894e3b94654d0c03491049/FLAG0716d7121 [2019-09-20 13:28:54,714 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:28:54,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext2-properties/simple_and_skiplist_2lvl-2.i [2019-09-20 13:28:54,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f93367c26/f6a4b09288894e3b94654d0c03491049/FLAG0716d7121 [2019-09-20 13:28:54,965 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f93367c26/f6a4b09288894e3b94654d0c03491049 [2019-09-20 13:28:54,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:28:54,975 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:28:54,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:54,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:28:54,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:28:54,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:54" (1/1) ... [2019-09-20 13:28:54,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a4d9462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:54, skipping insertion in model container [2019-09-20 13:28:54,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:54" (1/1) ... [2019-09-20 13:28:54,992 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:28:55,053 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:28:55,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:55,508 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:28:55,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:55,633 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:28:55,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:55 WrapperNode [2019-09-20 13:28:55,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:55,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:28:55,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:28:55,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:28:55,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:55" (1/1) ... [2019-09-20 13:28:55,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:55" (1/1) ... [2019-09-20 13:28:55,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:55" (1/1) ... [2019-09-20 13:28:55,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:55" (1/1) ... [2019-09-20 13:28:55,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:55" (1/1) ... [2019-09-20 13:28:55,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:55" (1/1) ... [2019-09-20 13:28:55,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:55" (1/1) ... [2019-09-20 13:28:55,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:28:55,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:28:55,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:28:55,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:28:55,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:55" (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 [2019-09-20 13:28:55,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:28:55,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:28:55,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-20 13:28:55,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-20 13:28:55,762 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-20 13:28:55,762 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die [2019-09-20 13:28:55,763 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sl_with_head_and_tail [2019-09-20 13:28:55,763 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_random_insert [2019-09-20 13:28:55,763 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_sl [2019-09-20 13:28:55,763 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:28:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:28:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:28:55,764 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-20 13:28:55,764 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-20 13:28:55,764 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-20 13:28:55,764 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-20 13:28:55,764 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-20 13:28:55,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-20 13:28:55,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-20 13:28:55,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-20 13:28:55,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-20 13:28:55,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-20 13:28:55,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-20 13:28:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-20 13:28:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-20 13:28:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-20 13:28:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-20 13:28:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-20 13:28:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-20 13:28:55,767 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-20 13:28:55,767 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-20 13:28:55,767 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-20 13:28:55,767 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-20 13:28:55,767 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-20 13:28:55,767 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-20 13:28:55,767 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-20 13:28:55,768 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-20 13:28:55,768 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-20 13:28:55,768 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-20 13:28:55,768 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-20 13:28:55,768 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-20 13:28:55,768 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-20 13:28:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-20 13:28:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-20 13:28:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-20 13:28:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-20 13:28:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-20 13:28:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-20 13:28:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-20 13:28:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-20 13:28:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-20 13:28:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-20 13:28:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-20 13:28:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-20 13:28:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-20 13:28:55,771 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-20 13:28:55,771 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-20 13:28:55,771 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-20 13:28:55,771 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-20 13:28:55,771 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-20 13:28:55,771 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-20 13:28:55,771 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-20 13:28:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-20 13:28:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-20 13:28:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:28:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-20 13:28:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-20 13:28:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:28:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-20 13:28:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-20 13:28:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-20 13:28:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-20 13:28:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-20 13:28:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-20 13:28:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-20 13:28:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-20 13:28:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-20 13:28:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-20 13:28:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-20 13:28:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-20 13:28:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-20 13:28:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-20 13:28:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-20 13:28:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-20 13:28:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-20 13:28:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-20 13:28:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-20 13:28:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-20 13:28:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-20 13:28:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-20 13:28:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-20 13:28:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-20 13:28:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-20 13:28:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-20 13:28:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-20 13:28:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-20 13:28:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-20 13:28:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-20 13:28:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-20 13:28:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-20 13:28:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-20 13:28:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-20 13:28:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-20 13:28:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-20 13:28:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-20 13:28:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-20 13:28:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-20 13:28:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-20 13:28:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-20 13:28:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-20 13:28:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-20 13:28:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-20 13:28:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-20 13:28:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-20 13:28:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-20 13:28:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-20 13:28:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-20 13:28:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-20 13:28:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die [2019-09-20 13:28:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:28:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure create_sl_with_head_and_tail [2019-09-20 13:28:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:28:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:28:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure sl_random_insert [2019-09-20 13:28:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_sl [2019-09-20 13:28:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:28:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:28:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:28:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:28:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:28:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:28:56,141 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-20 13:28:56,561 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:28:56,561 INFO L283 CfgBuilder]: Removed 6 assume(true) statements. [2019-09-20 13:28:56,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:56 BoogieIcfgContainer [2019-09-20 13:28:56,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:28:56,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:28:56,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:28:56,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:28:56,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:28:54" (1/3) ... [2019-09-20 13:28:56,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454beaa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:56, skipping insertion in model container [2019-09-20 13:28:56,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:55" (2/3) ... [2019-09-20 13:28:56,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454beaa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:56, skipping insertion in model container [2019-09-20 13:28:56,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:56" (3/3) ... [2019-09-20 13:28:56,572 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_and_skiplist_2lvl-2.i [2019-09-20 13:28:56,582 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:28:56,589 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:28:56,604 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:28:56,626 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:28:56,626 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:28:56,626 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:28:56,626 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:28:56,627 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:28:56,627 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:28:56,627 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:28:56,627 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:28:56,640 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-09-20 13:28:56,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-20 13:28:56,649 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:56,650 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:56,652 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:56,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:56,658 INFO L82 PathProgramCache]: Analyzing trace with hash 407034730, now seen corresponding path program 1 times [2019-09-20 13:28:56,660 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:56,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:56,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:56,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:56,724 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:56,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:56,823 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:56,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:28:56,824 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:56,830 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:28:56,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:28:56,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:28:56,849 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2019-09-20 13:28:56,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:56,873 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2019-09-20 13:28:56,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:28:56,874 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-09-20 13:28:56,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:56,883 INFO L225 Difference]: With dead ends: 54 [2019-09-20 13:28:56,883 INFO L226 Difference]: Without dead ends: 18 [2019-09-20 13:28:56,885 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:28:56,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-20 13:28:56,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-09-20 13:28:56,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-20 13:28:56,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-09-20 13:28:56,920 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2019-09-20 13:28:56,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:56,921 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-09-20 13:28:56,921 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:28:56,921 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-09-20 13:28:56,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-20 13:28:56,922 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:56,922 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:56,923 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:56,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:56,923 INFO L82 PathProgramCache]: Analyzing trace with hash -709462780, now seen corresponding path program 1 times [2019-09-20 13:28:56,923 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:56,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:56,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:56,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:56,928 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:57,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:57,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:57,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:28:57,115 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:57,116 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:28:57,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:28:57,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:28:57,117 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2019-09-20 13:28:57,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:57,218 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2019-09-20 13:28:57,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:28:57,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-09-20 13:28:57,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:57,219 INFO L225 Difference]: With dead ends: 31 [2019-09-20 13:28:57,220 INFO L226 Difference]: Without dead ends: 31 [2019-09-20 13:28:57,221 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:28:57,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-09-20 13:28:57,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2019-09-20 13:28:57,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-20 13:28:57,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-09-20 13:28:57,226 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2019-09-20 13:28:57,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:57,227 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-09-20 13:28:57,227 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:28:57,227 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-09-20 13:28:57,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-20 13:28:57,228 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:57,228 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:57,228 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:57,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:57,229 INFO L82 PathProgramCache]: Analyzing trace with hash -66753378, now seen corresponding path program 1 times [2019-09-20 13:28:57,229 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:57,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:57,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:57,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:57,233 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:57,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:57,398 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:28:57,398 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:28:57,399 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2019-09-20 13:28:57,401 INFO L207 CegarAbsIntRunner]: [55], [56], [57], [63], [65], [70], [73], [87], [96], [99], [101], [104], [106], [164], [165], [166] [2019-09-20 13:28:57,439 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:28:57,439 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:28:57,501 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:28:57,502 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 19 root evaluator evaluations with a maximum evaluation depth of 0. Performed 19 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 28 variables. [2019-09-20 13:28:57,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:57,506 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:28:57,534 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-20 13:28:57,534 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:28:57,536 INFO L420 sIntCurrentIteration]: We unified 16 AI predicates to 16 [2019-09-20 13:28:57,536 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:28:57,537 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:28:57,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2019-09-20 13:28:57,537 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:57,538 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:28:57,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:28:57,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:28:57,539 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 2 states. [2019-09-20 13:28:57,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:57,540 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-20 13:28:57,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:28:57,540 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-09-20 13:28:57,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:57,541 INFO L225 Difference]: With dead ends: 6 [2019-09-20 13:28:57,541 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:28:57,541 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:28:57,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:28:57,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:28:57,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:28:57,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:28:57,542 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-09-20 13:28:57,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:57,542 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:28:57,543 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:28:57,543 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:28:57,543 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:28:57,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:28:57 BoogieIcfgContainer [2019-09-20 13:28:57,548 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:28:57,551 INFO L168 Benchmark]: Toolchain (without parser) took 2574.71 ms. Allocated memory was 134.2 MB in the beginning and 228.1 MB in the end (delta: 93.8 MB). Free memory was 87.4 MB in the beginning and 156.4 MB in the end (delta: -69.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:57,552 INFO L168 Benchmark]: CDTParser took 1.15 ms. Allocated memory is still 134.2 MB. Free memory was 107.2 MB in the beginning and 107.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:28:57,554 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.69 ms. Allocated memory was 134.2 MB in the beginning and 200.8 MB in the end (delta: 66.6 MB). Free memory was 87.0 MB in the beginning and 163.5 MB in the end (delta: -76.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:57,554 INFO L168 Benchmark]: Boogie Preprocessor took 73.93 ms. Allocated memory is still 200.8 MB. Free memory was 163.5 MB in the beginning and 160.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:57,555 INFO L168 Benchmark]: RCFGBuilder took 854.60 ms. Allocated memory is still 200.8 MB. Free memory was 160.5 MB in the beginning and 103.4 MB in the end (delta: 57.1 MB). Peak memory consumption was 57.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:57,556 INFO L168 Benchmark]: TraceAbstraction took 984.02 ms. Allocated memory was 200.8 MB in the beginning and 228.1 MB in the end (delta: 27.3 MB). Free memory was 102.9 MB in the beginning and 156.4 MB in the end (delta: -53.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:28:57,560 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.15 ms. Allocated memory is still 134.2 MB. Free memory was 107.2 MB in the beginning and 107.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 657.69 ms. Allocated memory was 134.2 MB in the beginning and 200.8 MB in the end (delta: 66.6 MB). Free memory was 87.0 MB in the beginning and 163.5 MB in the end (delta: -76.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.93 ms. Allocated memory is still 200.8 MB. Free memory was 163.5 MB in the beginning and 160.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 854.60 ms. Allocated memory is still 200.8 MB. Free memory was 160.5 MB in the beginning and 103.4 MB in the end (delta: 57.1 MB). Peak memory consumption was 57.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 984.02 ms. Allocated memory was 200.8 MB in the beginning and 228.1 MB in the end (delta: 27.3 MB). Free memory was 102.9 MB in the beginning and 156.4 MB in the end (delta: -53.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 601]: 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 10 procedures, 64 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 84 SDtfs, 10 SDslu, 39 SDs, 0 SdLazy, 27 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, 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, 0.9375 AbsIntWeakeningRatio, 0.875 AbsIntAvgWeakeningVarsNumRemoved, 0.375 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 2507 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...