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-ext3-properties/dll_nullified-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:48:26,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:48:26,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:48:26,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 01:48:26,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 01:48:26,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 01:48:26,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 01:48:26,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 01:48:26,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 01:48:26,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 01:48:26,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 01:48:26,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 01:48:26,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:48:26,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:48:26,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:48:26,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:48:26,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:48:26,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:48:26,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:48:26,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:48:26,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:48:26,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:48:26,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:48:26,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:48:26,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 01:48:26,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 01:48:26,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 01:48:26,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 01:48:26,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 01:48:26,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 01:48:26,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:48:26,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:48:26,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:48:26,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:48:26,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:48:26,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:48:26,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:48:26,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:48:26,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:48:26,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:48:26,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:48:26,129 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 01:48:26,144 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:48:26,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:48:26,145 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:48:26,145 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:48:26,146 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:48:26,146 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:48:26,146 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:48:26,146 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:48:26,147 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:48:26,147 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:48:26,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:48:26,148 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:48:26,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:48:26,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:48:26,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:48:26,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:48:26,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:48:26,149 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:48:26,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:48:26,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:48:26,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:48:26,150 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:48:26,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:48:26,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:48:26,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:48:26,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:48:26,151 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:48:26,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:48:26,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:48:26,151 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:48:26,179 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:48:26,190 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:48:26,194 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:48:26,195 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:48:26,195 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:48:26,196 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2019-09-10 01:48:26,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33ae02113/4c574a0628ce4c95b91b693a70a3d069/FLAGa095fa947 [2019-09-10 01:48:26,802 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:48:26,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2019-09-10 01:48:26,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33ae02113/4c574a0628ce4c95b91b693a70a3d069/FLAGa095fa947 [2019-09-10 01:48:27,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33ae02113/4c574a0628ce4c95b91b693a70a3d069 [2019-09-10 01:48:27,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:48:27,106 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:48:27,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:48:27,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:48:27,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:48:27,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:48:27" (1/1) ... [2019-09-10 01:48:27,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d752d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:27, skipping insertion in model container [2019-09-10 01:48:27,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:48:27" (1/1) ... [2019-09-10 01:48:27,123 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:48:27,186 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:48:27,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:48:27,781 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:48:27,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:48:27,884 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:48:27,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:27 WrapperNode [2019-09-10 01:48:27,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:48:27,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:48:27,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:48:27,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:48:27,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:27" (1/1) ... [2019-09-10 01:48:27,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:27" (1/1) ... [2019-09-10 01:48:27,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:27" (1/1) ... [2019-09-10 01:48:27,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:27" (1/1) ... [2019-09-10 01:48:27,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:27" (1/1) ... [2019-09-10 01:48:27,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:27" (1/1) ... [2019-09-10 01:48:27,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:27" (1/1) ... [2019-09-10 01:48:27,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:48:27,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:48:27,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:48:27,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:48:28,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:48:28,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:48:28,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:48:28,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-10 01:48:28,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-10 01:48:28,066 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-10 01:48:28,066 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2019-09-10 01:48:28,066 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:48:28,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:48:28,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 01:48:28,066 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-10 01:48:28,067 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-10 01:48:28,067 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-10 01:48:28,067 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-10 01:48:28,067 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-10 01:48:28,067 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-10 01:48:28,068 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-10 01:48:28,068 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-10 01:48:28,068 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-10 01:48:28,068 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-10 01:48:28,068 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-10 01:48:28,068 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-10 01:48:28,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-10 01:48:28,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-10 01:48:28,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-10 01:48:28,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-10 01:48:28,069 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-10 01:48:28,069 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-10 01:48:28,070 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-10 01:48:28,070 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-10 01:48:28,070 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-10 01:48:28,070 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-10 01:48:28,070 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-10 01:48:28,070 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-10 01:48:28,071 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-10 01:48:28,071 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-10 01:48:28,071 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-10 01:48:28,071 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-10 01:48:28,071 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-10 01:48:28,071 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-10 01:48:28,071 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-10 01:48:28,072 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-10 01:48:28,072 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-10 01:48:28,072 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-10 01:48:28,072 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-10 01:48:28,072 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-10 01:48:28,072 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-10 01:48:28,072 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-10 01:48:28,073 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-10 01:48:28,073 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-10 01:48:28,073 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-10 01:48:28,073 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-10 01:48:28,073 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-10 01:48:28,073 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-10 01:48:28,073 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-10 01:48:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-10 01:48:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-10 01:48:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-10 01:48:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-10 01:48:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-10 01:48:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-10 01:48:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-10 01:48:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 01:48:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-10 01:48:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-10 01:48:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 01:48:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-10 01:48:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-10 01:48:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-10 01:48:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-10 01:48:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-10 01:48:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-10 01:48:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-10 01:48:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-10 01:48:28,077 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-10 01:48:28,077 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-10 01:48:28,077 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-10 01:48:28,077 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-10 01:48:28,077 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-10 01:48:28,077 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-10 01:48:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-10 01:48:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-10 01:48:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-10 01:48:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-10 01:48:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-10 01:48:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-10 01:48:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-10 01:48:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-10 01:48:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-10 01:48:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-10 01:48:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-10 01:48:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-10 01:48:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-10 01:48:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-10 01:48:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-10 01:48:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-10 01:48:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-10 01:48:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-10 01:48:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-10 01:48:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-10 01:48:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-10 01:48:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-10 01:48:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-10 01:48:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-10 01:48:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-10 01:48:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-10 01:48:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-10 01:48:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-10 01:48:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-10 01:48:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-10 01:48:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-10 01:48:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-10 01:48:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-10 01:48:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-10 01:48:28,083 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-10 01:48:28,083 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-10 01:48:28,083 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2019-09-10 01:48:28,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 01:48:28,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:48:28,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 01:48:28,083 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:48:28,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 01:48:28,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:48:28,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:48:28,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:48:28,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:48:28,400 INFO L684 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-10 01:48:28,651 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:48:28,651 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-10 01:48:28,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:48:28 BoogieIcfgContainer [2019-09-10 01:48:28,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:48:28,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:48:28,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:48:28,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:48:28,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:48:27" (1/3) ... [2019-09-10 01:48:28,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273c589c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:48:28, skipping insertion in model container [2019-09-10 01:48:28,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:27" (2/3) ... [2019-09-10 01:48:28,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273c589c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:48:28, skipping insertion in model container [2019-09-10 01:48:28,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:48:28" (3/3) ... [2019-09-10 01:48:28,663 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2019-09-10 01:48:28,674 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:48:28,683 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:48:28,701 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:48:28,728 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:48:28,729 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:48:28,729 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:48:28,729 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:48:28,730 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:48:28,730 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:48:28,730 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:48:28,730 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:48:28,757 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-09-10 01:48:28,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-10 01:48:28,768 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:28,769 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:48:28,771 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:28,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:28,776 INFO L82 PathProgramCache]: Analyzing trace with hash 248267832, now seen corresponding path program 1 times [2019-09-10 01:48:28,778 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:28,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:28,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:28,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:28,829 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:28,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:48:28,958 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:48:28,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 01:48:28,959 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:28,964 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 01:48:28,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 01:48:28,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:48:28,983 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2019-09-10 01:48:29,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:29,060 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2019-09-10 01:48:29,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 01:48:29,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2019-09-10 01:48:29,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:29,073 INFO L225 Difference]: With dead ends: 44 [2019-09-10 01:48:29,074 INFO L226 Difference]: Without dead ends: 36 [2019-09-10 01:48:29,075 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:48:29,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-09-10 01:48:29,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2019-09-10 01:48:29,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-09-10 01:48:29,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2019-09-10 01:48:29,109 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 20 [2019-09-10 01:48:29,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:29,110 INFO L475 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2019-09-10 01:48:29,110 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 01:48:29,110 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2019-09-10 01:48:29,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-10 01:48:29,111 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:29,111 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:48:29,111 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:29,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:29,112 INFO L82 PathProgramCache]: Analyzing trace with hash 248265910, now seen corresponding path program 1 times [2019-09-10 01:48:29,112 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:29,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:29,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:29,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:29,115 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:29,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:48:29,193 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:48:29,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 01:48:29,193 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:29,195 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 01:48:29,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 01:48:29,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:48:29,196 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand 5 states. [2019-09-10 01:48:29,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:29,284 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2019-09-10 01:48:29,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 01:48:29,284 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-09-10 01:48:29,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:29,286 INFO L225 Difference]: With dead ends: 45 [2019-09-10 01:48:29,286 INFO L226 Difference]: Without dead ends: 42 [2019-09-10 01:48:29,287 INFO L628 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 [2019-09-10 01:48:29,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-09-10 01:48:29,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2019-09-10 01:48:29,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-10 01:48:29,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2019-09-10 01:48:29,295 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 20 [2019-09-10 01:48:29,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:29,295 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2019-09-10 01:48:29,296 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 01:48:29,296 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2019-09-10 01:48:29,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-09-10 01:48:29,300 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:29,300 INFO L399 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] [2019-09-10 01:48:29,301 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:29,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:29,301 INFO L82 PathProgramCache]: Analyzing trace with hash 215855051, now seen corresponding path program 1 times [2019-09-10 01:48:29,301 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:29,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:29,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:29,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:29,306 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:29,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:48:29,434 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:48:29,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 01:48:29,435 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:29,435 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 01:48:29,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 01:48:29,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:48:29,436 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand 3 states. [2019-09-10 01:48:29,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:29,462 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2019-09-10 01:48:29,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 01:48:29,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-09-10 01:48:29,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:29,466 INFO L225 Difference]: With dead ends: 42 [2019-09-10 01:48:29,466 INFO L226 Difference]: Without dead ends: 42 [2019-09-10 01:48:29,466 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:48:29,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-09-10 01:48:29,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2019-09-10 01:48:29,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-09-10 01:48:29,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2019-09-10 01:48:29,475 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 27 [2019-09-10 01:48:29,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:29,476 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2019-09-10 01:48:29,476 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 01:48:29,476 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2019-09-10 01:48:29,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-09-10 01:48:29,477 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:29,477 INFO L399 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] [2019-09-10 01:48:29,477 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:29,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:29,478 INFO L82 PathProgramCache]: Analyzing trace with hash -795262199, now seen corresponding path program 1 times [2019-09-10 01:48:29,478 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:29,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:29,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:29,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:29,481 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:29,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:48:29,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:48:29,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-10 01:48:29,628 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:29,628 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-10 01:48:29,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-10 01:48:29,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-10 01:48:29,629 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand 8 states. [2019-09-10 01:48:29,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:29,860 INFO L93 Difference]: Finished difference Result 65 states and 82 transitions. [2019-09-10 01:48:29,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-10 01:48:29,861 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2019-09-10 01:48:29,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:29,862 INFO L225 Difference]: With dead ends: 65 [2019-09-10 01:48:29,862 INFO L226 Difference]: Without dead ends: 65 [2019-09-10 01:48:29,863 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-09-10 01:48:29,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-09-10 01:48:29,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 50. [2019-09-10 01:48:29,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-09-10 01:48:29,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2019-09-10 01:48:29,870 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 27 [2019-09-10 01:48:29,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:29,871 INFO L475 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2019-09-10 01:48:29,871 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-10 01:48:29,871 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2019-09-10 01:48:29,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-09-10 01:48:29,873 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:29,874 INFO L399 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] [2019-09-10 01:48:29,874 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:29,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:29,874 INFO L82 PathProgramCache]: Analyzing trace with hash -793413235, now seen corresponding path program 1 times [2019-09-10 01:48:29,875 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:29,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:29,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:29,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:29,878 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:30,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:48:30,004 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:48:30,004 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 01:48:30,005 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 28 with the following transitions: [2019-09-10 01:48:30,008 INFO L207 CegarAbsIntRunner]: [7], [8], [9], [11], [16], [21], [26], [28], [33], [37], [73], [78], [85], [87], [93], [95], [98], [102], [107], [109], [113], [114], [118], [119], [122], [123], [124] [2019-09-10 01:48:30,056 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 01:48:30,056 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 01:48:30,144 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 01:48:30,146 INFO L272 AbstractInterpreter]: Visited 10 different actions 10 times. Never merged. Never widened. Performed 34 root evaluator evaluations with a maximum evaluation depth of 4. Performed 34 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Never found a fixpoint. Largest state had 29 variables. [2019-09-10 01:48:30,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:30,150 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 01:48:30,192 INFO L227 lantSequenceWeakener]: Weakened 8 states. On average, predicates are now at 85.62% of their original sizes. [2019-09-10 01:48:30,192 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 01:48:30,207 INFO L420 sIntCurrentIteration]: We unified 26 AI predicates to 26 [2019-09-10 01:48:30,207 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 01:48:30,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 01:48:30,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-10 01:48:30,208 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:30,209 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 01:48:30,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 01:48:30,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:48:30,209 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand 5 states. [2019-09-10 01:48:30,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:30,221 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2019-09-10 01:48:30,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 01:48:30,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-09-10 01:48:30,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:30,222 INFO L225 Difference]: With dead ends: 9 [2019-09-10 01:48:30,222 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 01:48:30,223 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-10 01:48:30,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 01:48:30,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 01:48:30,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 01:48:30,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 01:48:30,223 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2019-09-10 01:48:30,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:30,224 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 01:48:30,224 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 01:48:30,224 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 01:48:30,224 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 01:48:30,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:48:30 BoogieIcfgContainer [2019-09-10 01:48:30,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:48:30,232 INFO L168 Benchmark]: Toolchain (without parser) took 3125.57 ms. Allocated memory was 135.3 MB in the beginning and 233.3 MB in the end (delta: 98.0 MB). Free memory was 90.0 MB in the beginning and 134.6 MB in the end (delta: -44.7 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:30,233 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 135.3 MB. Free memory was 109.8 MB in the beginning and 109.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:48:30,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 778.49 ms. Allocated memory was 135.3 MB in the beginning and 204.5 MB in the end (delta: 69.2 MB). Free memory was 89.8 MB in the beginning and 166.2 MB in the end (delta: -76.5 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:30,235 INFO L168 Benchmark]: Boogie Preprocessor took 112.08 ms. Allocated memory is still 204.5 MB. Free memory was 166.2 MB in the beginning and 163.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:30,236 INFO L168 Benchmark]: RCFGBuilder took 655.04 ms. Allocated memory is still 204.5 MB. Free memory was 163.1 MB in the beginning and 118.5 MB in the end (delta: 44.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:30,237 INFO L168 Benchmark]: TraceAbstraction took 1574.92 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 118.5 MB in the beginning and 134.6 MB in the end (delta: -16.1 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:30,241 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 135.3 MB. Free memory was 109.8 MB in the beginning and 109.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 778.49 ms. Allocated memory was 135.3 MB in the beginning and 204.5 MB in the end (delta: 69.2 MB). Free memory was 89.8 MB in the beginning and 166.2 MB in the end (delta: -76.5 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.08 ms. Allocated memory is still 204.5 MB. Free memory was 166.2 MB in the beginning and 163.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 655.04 ms. Allocated memory is still 204.5 MB. Free memory was 163.1 MB in the beginning and 118.5 MB in the end (delta: 44.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1574.92 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 118.5 MB in the beginning and 134.6 MB in the end (delta: -16.1 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 605]: 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 7 procedures, 47 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 160 SDtfs, 62 SDslu, 386 SDs, 0 SdLazy, 164 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9403846153846154 AbsIntWeakeningRatio, 1.2692307692307692 AbsIntAvgWeakeningVarsNumRemoved, 0.9230769230769231 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 23 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 6294 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 2/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...