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-simple/dll2c_update_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:28:58,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:28:58,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:28:58,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:28:58,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:28:58,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:28:58,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:28:58,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:28:58,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:28:58,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:28:58,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:28:58,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:28:58,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:28:58,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:28:58,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:28:58,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:28:58,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:28:58,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:28:58,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:28:58,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:28:58,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:28:58,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:28:58,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:28:58,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:28:58,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:28:58,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:28:58,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:28:58,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:28:58,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:28:58,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:28:58,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:28:58,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:28:58,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:28:58,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:28:58,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:28:58,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:28:58,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:28:58,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:28:58,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:28:58,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:28:58,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:28:58,141 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 13:28:58,155 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:28:58,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:28:58,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:28:58,156 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:28:58,157 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:28:58,157 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:28:58,157 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:28:58,158 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:28:58,158 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:28:58,158 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:28:58,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:28:58,159 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:28:58,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:28:58,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:28:58,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:28:58,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:28:58,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:28:58,160 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:28:58,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:28:58,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:28:58,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:28:58,161 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:28:58,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:28:58,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:28:58,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:28:58,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:28:58,162 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:28:58,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:28:58,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:28:58,163 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:28:58,195 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:28:58,208 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:28:58,211 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:28:58,213 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:28:58,213 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:28:58,214 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_update_all.i [2019-09-20 13:28:58,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b71964a95/9fa319ea62264157a7f030df55b49885/FLAGa44338930 [2019-09-20 13:28:58,859 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:28:58,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2c_update_all.i [2019-09-20 13:28:58,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b71964a95/9fa319ea62264157a7f030df55b49885/FLAGa44338930 [2019-09-20 13:28:59,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b71964a95/9fa319ea62264157a7f030df55b49885 [2019-09-20 13:28:59,151 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:28:59,153 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:28:59,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:59,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:28:59,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:28:59,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:59" (1/1) ... [2019-09-20 13:28:59,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7052cab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:59, skipping insertion in model container [2019-09-20 13:28:59,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:59" (1/1) ... [2019-09-20 13:28:59,173 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:28:59,232 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:28:59,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:59,698 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:28:59,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:59,824 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:28:59,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:59 WrapperNode [2019-09-20 13:28:59,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:59,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:28:59,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:28:59,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:28:59,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:59" (1/1) ... [2019-09-20 13:28:59,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:59" (1/1) ... [2019-09-20 13:28:59,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:59" (1/1) ... [2019-09-20 13:28:59,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:59" (1/1) ... [2019-09-20 13:28:59,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:59" (1/1) ... [2019-09-20 13:28:59,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:59" (1/1) ... [2019-09-20 13:28:59,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:59" (1/1) ... [2019-09-20 13:28:59,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:28:59,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:28:59,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:28:59,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:28:59,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:59" (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 13:28:59,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:28:59,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:28:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-20 13:28:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-20 13:28:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-20 13:28:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-20 13:28:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2019-09-20 13:28:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2019-09-20 13:28:59,984 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_get_data_at [2019-09-20 13:28:59,984 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_update_at [2019-09-20 13:28:59,984 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:28:59,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:28:59,984 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-20 13:28:59,985 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-20 13:28:59,985 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-20 13:28:59,985 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-20 13:28:59,985 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-20 13:28:59,985 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-20 13:28:59,985 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-20 13:28:59,986 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-20 13:28:59,986 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-20 13:28:59,986 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-20 13:28:59,986 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-20 13:28:59,986 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-20 13:28:59,986 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-20 13:28:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-20 13:28:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-20 13:28:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-20 13:28:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-20 13:28:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-20 13:28:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-20 13:28:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-20 13:28:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-20 13:28:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-20 13:28:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-20 13:28:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-20 13:28:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-20 13:28:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-20 13:28:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-20 13:28:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-20 13:28:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-20 13:28:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-20 13:28:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-20 13:28:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-20 13:28:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-20 13:28:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-20 13:28:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-20 13:28:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-20 13:28:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-20 13:28:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-20 13:28:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-20 13:28:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-20 13:28:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-20 13:28:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-20 13:28:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-20 13:28:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-20 13:28:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-20 13:28:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-20 13:28:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-20 13:28:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-20 13:28:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-20 13:28:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-20 13:28:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-20 13:28:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-20 13:28:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:28:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-20 13:28:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-20 13:28:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:28:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-20 13:28:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-20 13:28:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-20 13:28:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-20 13:28:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-20 13:28:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-20 13:28:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-20 13:28:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-20 13:28:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-20 13:28:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-20 13:28:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-20 13:28:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-20 13:28:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-20 13:28:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-20 13:28:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-20 13:28:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-20 13:28:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-20 13:28:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-20 13:28:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-20 13:28:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-20 13:28:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-20 13:28:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-20 13:28:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-20 13:28:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-20 13:28:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-20 13:28:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-20 13:28:59,998 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-20 13:28:59,998 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-20 13:28:59,998 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-20 13:28:59,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-20 13:28:59,998 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-20 13:28:59,998 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-20 13:28:59,999 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-20 13:28:59,999 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-20 13:28:59,999 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-20 13:28:59,999 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-20 13:28:59,999 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-20 13:28:59,999 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-20 13:28:59,999 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-20 13:28:59,999 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-20 13:29:00,000 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-20 13:29:00,000 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-20 13:29:00,000 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-20 13:29:00,000 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-20 13:29:00,000 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-20 13:29:00,000 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-20 13:29:00,001 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-20 13:29:00,001 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-20 13:29:00,001 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-20 13:29:00,001 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-20 13:29:00,001 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-20 13:29:00,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:29:00,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:29:00,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:29:00,002 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2019-09-20 13:29:00,002 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2019-09-20 13:29:00,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:29:00,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:29:00,002 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_get_data_at [2019-09-20 13:29:00,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:29:00,003 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_update_at [2019-09-20 13:29:00,003 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:29:00,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:29:00,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:29:00,535 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-20 13:29:00,651 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:29:00,651 INFO L283 CfgBuilder]: Removed 6 assume(true) statements. [2019-09-20 13:29:00,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:00 BoogieIcfgContainer [2019-09-20 13:29:00,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:29:00,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:29:00,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:29:00,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:29:00,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:28:59" (1/3) ... [2019-09-20 13:29:00,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e823690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:00, skipping insertion in model container [2019-09-20 13:29:00,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:59" (2/3) ... [2019-09-20 13:29:00,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e823690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:00, skipping insertion in model container [2019-09-20 13:29:00,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:00" (3/3) ... [2019-09-20 13:29:00,671 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_update_all.i [2019-09-20 13:29:00,683 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:29:00,696 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:29:00,715 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:29:00,746 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:29:00,746 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:29:00,747 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:29:00,747 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:29:00,747 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:29:00,747 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:29:00,748 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:29:00,748 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:29:00,768 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2019-09-20 13:29:00,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-20 13:29:00,780 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:00,781 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] [2019-09-20 13:29:00,783 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:00,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:00,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1661227511, now seen corresponding path program 1 times [2019-09-20 13:29:00,791 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:00,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:00,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:00,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:00,862 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:00,990 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 13:29:00,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:00,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:29:00,994 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:01,000 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:01,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:01,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:01,020 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2019-09-20 13:29:01,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:01,042 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2019-09-20 13:29:01,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:01,044 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 32 [2019-09-20 13:29:01,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:01,054 INFO L225 Difference]: With dead ends: 60 [2019-09-20 13:29:01,055 INFO L226 Difference]: Without dead ends: 45 [2019-09-20 13:29:01,057 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 13:29:01,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-09-20 13:29:01,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-09-20 13:29:01,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-09-20 13:29:01,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2019-09-20 13:29:01,101 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 32 [2019-09-20 13:29:01,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:01,103 INFO L475 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2019-09-20 13:29:01,103 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:01,103 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2019-09-20 13:29:01,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-20 13:29:01,105 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:01,106 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] [2019-09-20 13:29:01,106 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:01,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:01,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1248070634, now seen corresponding path program 1 times [2019-09-20 13:29:01,107 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:01,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:01,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:01,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:01,113 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:01,289 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 13:29:01,289 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:01,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:29:01,290 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:01,292 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:29:01,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:29:01,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:29:01,293 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 5 states. [2019-09-20 13:29:01,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:01,413 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2019-09-20 13:29:01,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:29:01,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-09-20 13:29:01,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:01,415 INFO L225 Difference]: With dead ends: 53 [2019-09-20 13:29:01,415 INFO L226 Difference]: Without dead ends: 50 [2019-09-20 13:29:01,416 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 [2019-09-20 13:29:01,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-09-20 13:29:01,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2019-09-20 13:29:01,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-09-20 13:29:01,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2019-09-20 13:29:01,425 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 32 [2019-09-20 13:29:01,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:01,426 INFO L475 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2019-09-20 13:29:01,426 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:29:01,426 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2019-09-20 13:29:01,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-20 13:29:01,428 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:01,428 INFO L407 BasicCegarLoop]: trace histogram [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] [2019-09-20 13:29:01,428 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:01,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:01,429 INFO L82 PathProgramCache]: Analyzing trace with hash -820838434, now seen corresponding path program 1 times [2019-09-20 13:29:01,429 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:01,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:01,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:01,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:01,434 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:01,565 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-20 13:29:01,565 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:01,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:29:01,566 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:01,566 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:29:01,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:29:01,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:29:01,567 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 4 states. [2019-09-20 13:29:01,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:01,603 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2019-09-20 13:29:01,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:29:01,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2019-09-20 13:29:01,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:01,605 INFO L225 Difference]: With dead ends: 56 [2019-09-20 13:29:01,606 INFO L226 Difference]: Without dead ends: 56 [2019-09-20 13:29:01,606 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:29:01,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-09-20 13:29:01,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2019-09-20 13:29:01,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-09-20 13:29:01,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2019-09-20 13:29:01,613 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 42 [2019-09-20 13:29:01,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:01,614 INFO L475 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2019-09-20 13:29:01,614 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:29:01,614 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2019-09-20 13:29:01,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-09-20 13:29:01,616 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:01,616 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:01,616 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:01,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:01,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1202630968, now seen corresponding path program 1 times [2019-09-20 13:29:01,617 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:01,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:01,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:01,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:01,621 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:01,754 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-20 13:29:01,754 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:29:01,754 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:29:01,755 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 51 with the following transitions: [2019-09-20 13:29:01,757 INFO L207 CegarAbsIntRunner]: [0], [2], [9], [11], [13], [16], [20], [24], [25], [26], [33], [39], [40], [48], [55], [61], [62], [63], [69], [71], [72], [73], [74], [75], [77], [83], [85], [88], [92], [100], [102], [105], [115], [144], [145], [146], [147], [150], [151], [152], [153], [154], [155], [158], [159], [160] [2019-09-20 13:29:01,801 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:29:01,802 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:29:01,859 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:29:01,860 INFO L272 AbstractInterpreter]: Visited 10 different actions 10 times. Never merged. Never widened. Performed 43 root evaluator evaluations with a maximum evaluation depth of 0. Performed 43 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 33 variables. [2019-09-20 13:29:01,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:01,864 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:29:01,912 INFO L227 lantSequenceWeakener]: Weakened 8 states. On average, predicates are now at 86.04% of their original sizes. [2019-09-20 13:29:01,912 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:29:01,946 INFO L420 sIntCurrentIteration]: We unified 49 AI predicates to 49 [2019-09-20 13:29:01,946 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:29:01,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:29:01,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2019-09-20 13:29:01,947 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:01,948 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:29:01,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:29:01,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:29:01,948 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 6 states. [2019-09-20 13:29:01,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:01,965 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2019-09-20 13:29:01,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:29:01,965 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2019-09-20 13:29:01,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:01,966 INFO L225 Difference]: With dead ends: 10 [2019-09-20 13:29:01,966 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:29:01,967 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:29:01,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:29:01,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:29:01,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:29:01,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:29:01,968 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2019-09-20 13:29:01,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:01,968 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:29:01,968 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:29:01,968 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:29:01,968 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:29:01,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:29:01 BoogieIcfgContainer [2019-09-20 13:29:01,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:29:01,976 INFO L168 Benchmark]: Toolchain (without parser) took 2822.62 ms. Allocated memory was 137.9 MB in the beginning and 219.7 MB in the end (delta: 81.8 MB). Free memory was 84.5 MB in the beginning and 136.3 MB in the end (delta: -51.7 MB). Peak memory consumption was 30.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:01,978 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 137.9 MB. Free memory was 103.9 MB in the beginning and 103.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:29:01,979 INFO L168 Benchmark]: CACSL2BoogieTranslator took 671.81 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 84.3 MB in the beginning and 160.8 MB in the end (delta: -76.5 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:01,980 INFO L168 Benchmark]: Boogie Preprocessor took 92.09 ms. Allocated memory is still 199.8 MB. Free memory was 160.8 MB in the beginning and 157.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:01,980 INFO L168 Benchmark]: RCFGBuilder took 734.92 ms. Allocated memory is still 199.8 MB. Free memory was 157.7 MB in the beginning and 107.8 MB in the end (delta: 49.8 MB). Peak memory consumption was 49.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:01,981 INFO L168 Benchmark]: TraceAbstraction took 1319.30 ms. Allocated memory was 199.8 MB in the beginning and 219.7 MB in the end (delta: 19.9 MB). Free memory was 107.8 MB in the beginning and 136.3 MB in the end (delta: -28.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:29:01,985 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 137.9 MB. Free memory was 103.9 MB in the beginning and 103.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 671.81 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 84.3 MB in the beginning and 160.8 MB in the end (delta: -76.5 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.09 ms. Allocated memory is still 199.8 MB. Free memory was 160.8 MB in the beginning and 157.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 734.92 ms. Allocated memory is still 199.8 MB. Free memory was 157.7 MB in the beginning and 107.8 MB in the end (delta: 49.8 MB). Peak memory consumption was 49.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1319.30 ms. Allocated memory was 199.8 MB in the beginning and 219.7 MB in the end (delta: 19.9 MB). Free memory was 107.8 MB in the beginning and 136.3 MB in the end (delta: -28.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 632]: 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 11 procedures, 67 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 171 SDtfs, 42 SDslu, 187 SDs, 0 SdLazy, 39 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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, 0.9532312925170067 AbsIntWeakeningRatio, 1.3265306122448979 AbsIntAvgWeakeningVarsNumRemoved, 0.4897959183673469 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 8122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 12/13 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...