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/forester-heap/sll-reverse_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:47:25,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:47:25,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:47:25,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 01:47:25,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 01:47:25,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 01:47:25,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 01:47:25,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 01:47:25,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 01:47:25,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 01:47:25,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 01:47:25,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 01:47:25,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:47:25,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:47:25,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:47:25,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:47:25,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:47:25,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:47:25,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:47:25,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:47:25,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:47:25,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:47:25,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:47:25,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:47:25,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 01:47:25,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 01:47:25,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 01:47:25,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 01:47:25,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 01:47:25,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 01:47:25,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:47:25,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:47:25,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:47:25,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:47:25,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:47:25,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:47:25,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:47:25,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:47:25,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:47:25,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:47:25,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:47:25,267 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 01:47:25,281 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:47:25,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:47:25,282 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:47:25,282 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:47:25,283 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:47:25,283 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:47:25,283 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:47:25,283 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:47:25,283 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:47:25,284 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:47:25,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:47:25,285 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:47:25,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:47:25,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:47:25,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:47:25,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:47:25,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:47:25,287 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:47:25,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:47:25,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:47:25,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:47:25,288 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:47:25,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:47:25,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:47:25,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:47:25,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:47:25,289 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:47:25,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:47:25,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:47:25,290 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:47:25,342 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:47:25,360 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:47:25,365 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:47:25,367 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:47:25,368 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:47:25,369 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-reverse_simple.i [2019-09-10 01:47:25,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2c87ffb7/a0abf4b599d0421a9963dcba6725e46e/FLAGf07cf84b8 [2019-09-10 01:47:25,997 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:47:25,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-reverse_simple.i [2019-09-10 01:47:26,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2c87ffb7/a0abf4b599d0421a9963dcba6725e46e/FLAGf07cf84b8 [2019-09-10 01:47:26,243 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2c87ffb7/a0abf4b599d0421a9963dcba6725e46e [2019-09-10 01:47:26,253 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:47:26,255 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:47:26,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:47:26,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:47:26,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:47:26,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:47:26" (1/1) ... [2019-09-10 01:47:26,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9fa8fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:26, skipping insertion in model container [2019-09-10 01:47:26,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:47:26" (1/1) ... [2019-09-10 01:47:26,270 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:47:26,323 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:47:26,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:47:26,786 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:47:26,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:47:26,904 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:47:26,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:26 WrapperNode [2019-09-10 01:47:26,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:47:26,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:47:26,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:47:26,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:47:26,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:26" (1/1) ... [2019-09-10 01:47:26,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:26" (1/1) ... [2019-09-10 01:47:26,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:26" (1/1) ... [2019-09-10 01:47:26,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:26" (1/1) ... [2019-09-10 01:47:26,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:26" (1/1) ... [2019-09-10 01:47:26,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:26" (1/1) ... [2019-09-10 01:47:27,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:26" (1/1) ... [2019-09-10 01:47:27,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:47:27,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:47:27,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:47:27,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:47:27,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:26" (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 01:47:27,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:47:27,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:47:27,062 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:47:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-10 01:47:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-10 01:47:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-10 01:47:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-10 01:47:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-10 01:47:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-10 01:47:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-10 01:47:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-10 01:47:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-10 01:47:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-10 01:47:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-10 01:47:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-10 01:47:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-10 01:47:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-10 01:47:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-10 01:47:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-10 01:47:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-10 01:47:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-10 01:47:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-10 01:47:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-10 01:47:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-10 01:47:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-10 01:47:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-10 01:47:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-10 01:47:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-10 01:47:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-10 01:47:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-10 01:47:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-10 01:47:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-10 01:47:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-10 01:47:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-10 01:47:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-10 01:47:27,068 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-10 01:47:27,068 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-10 01:47:27,068 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-10 01:47:27,068 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-10 01:47:27,068 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-10 01:47:27,068 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-10 01:47:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-10 01:47:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-10 01:47:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-10 01:47:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-10 01:47:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-10 01:47:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-10 01:47:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-10 01:47:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-10 01:47:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-10 01:47:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-10 01:47:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-10 01:47:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-10 01:47:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 01:47:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-10 01:47:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-10 01:47:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 01:47:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-10 01:47:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-10 01:47:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-10 01:47:27,072 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-10 01:47:27,072 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-10 01:47:27,072 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-10 01:47:27,072 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-10 01:47:27,072 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-10 01:47:27,072 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-10 01:47:27,073 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-10 01:47:27,073 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-10 01:47:27,073 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-10 01:47:27,073 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-10 01:47:27,073 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-10 01:47:27,073 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-10 01:47:27,074 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-10 01:47:27,074 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-10 01:47:27,074 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-10 01:47:27,074 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-10 01:47:27,074 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-10 01:47:27,074 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-10 01:47:27,074 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-10 01:47:27,075 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-10 01:47:27,075 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-10 01:47:27,075 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-10 01:47:27,075 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-10 01:47:27,075 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-10 01:47:27,075 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-10 01:47:27,075 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-10 01:47:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-10 01:47:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-10 01:47:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-10 01:47:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-10 01:47:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-10 01:47:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-10 01:47:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-10 01:47:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-10 01:47:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-10 01:47:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-10 01:47:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-10 01:47:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-10 01:47:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-10 01:47:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-10 01:47:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-10 01:47:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-10 01:47:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-10 01:47:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-10 01:47:27,079 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-10 01:47:27,079 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-10 01:47:27,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 01:47:27,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:47:27,079 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:47:27,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 01:47:27,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 01:47:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:47:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 01:47:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:47:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:47:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:47:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:47:27,720 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:47:27,720 INFO L283 CfgBuilder]: Removed 11 assume(true) statements. [2019-09-10 01:47:27,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:47:27 BoogieIcfgContainer [2019-09-10 01:47:27,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:47:27,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:47:27,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:47:27,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:47:27,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:47:26" (1/3) ... [2019-09-10 01:47:27,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a94f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:47:27, skipping insertion in model container [2019-09-10 01:47:27,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:26" (2/3) ... [2019-09-10 01:47:27,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a94f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:47:27, skipping insertion in model container [2019-09-10 01:47:27,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:47:27" (3/3) ... [2019-09-10 01:47:27,729 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-reverse_simple.i [2019-09-10 01:47:27,739 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:47:27,747 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-09-10 01:47:27,764 INFO L252 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-09-10 01:47:27,794 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:47:27,795 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:47:27,795 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:47:27,795 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:47:27,796 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:47:27,796 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:47:27,800 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:47:27,800 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:47:27,814 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-09-10 01:47:27,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-10 01:47:27,822 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:47:27,823 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:47:27,825 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:47:27,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:27,831 INFO L82 PathProgramCache]: Analyzing trace with hash -395886000, now seen corresponding path program 1 times [2019-09-10 01:47:27,832 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:47:27,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:27,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:47:27,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:27,882 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:47:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:47:27,975 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 01:47:27,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:47:27,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:47:27,978 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:47:27,984 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:47:27,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:47:27,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:47:27,999 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2019-09-10 01:47:28,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:47:28,017 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2019-09-10 01:47:28,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:47:28,018 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-09-10 01:47:28,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:47:28,026 INFO L225 Difference]: With dead ends: 39 [2019-09-10 01:47:28,026 INFO L226 Difference]: Without dead ends: 32 [2019-09-10 01:47:28,028 INFO L628 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 [2019-09-10 01:47:28,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-09-10 01:47:28,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-09-10 01:47:28,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-09-10 01:47:28,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2019-09-10 01:47:28,062 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 11 [2019-09-10 01:47:28,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:47:28,062 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2019-09-10 01:47:28,063 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:47:28,063 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2019-09-10 01:47:28,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-10 01:47:28,063 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:47:28,063 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:47:28,064 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:47:28,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:28,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1299869323, now seen corresponding path program 1 times [2019-09-10 01:47:28,065 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:47:28,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:28,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:47:28,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:28,067 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:47:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:47:28,207 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 01:47:28,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:47:28,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 01:47:28,208 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:47:28,209 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 01:47:28,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 01:47:28,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:47:28,211 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 5 states. [2019-09-10 01:47:28,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:47:28,459 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2019-09-10 01:47:28,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 01:47:28,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-09-10 01:47:28,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:47:28,460 INFO L225 Difference]: With dead ends: 45 [2019-09-10 01:47:28,461 INFO L226 Difference]: Without dead ends: 45 [2019-09-10 01:47:28,462 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-10 01:47:28,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-09-10 01:47:28,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2019-09-10 01:47:28,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-09-10 01:47:28,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2019-09-10 01:47:28,469 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 14 [2019-09-10 01:47:28,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:47:28,469 INFO L475 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2019-09-10 01:47:28,469 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 01:47:28,469 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2019-09-10 01:47:28,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-10 01:47:28,470 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:47:28,470 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:47:28,471 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:47:28,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:28,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1299810991, now seen corresponding path program 1 times [2019-09-10 01:47:28,471 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:47:28,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:28,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:47:28,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:28,473 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:47:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:47:28,540 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 01:47:28,541 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:47:28,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 01:47:28,542 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:47:28,542 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 01:47:28,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 01:47:28,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:47:28,543 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2019-09-10 01:47:28,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:47:28,631 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2019-09-10 01:47:28,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 01:47:28,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-09-10 01:47:28,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:47:28,633 INFO L225 Difference]: With dead ends: 49 [2019-09-10 01:47:28,633 INFO L226 Difference]: Without dead ends: 49 [2019-09-10 01:47:28,633 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 01:47:28,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-09-10 01:47:28,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2019-09-10 01:47:28,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-09-10 01:47:28,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2019-09-10 01:47:28,640 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 14 [2019-09-10 01:47:28,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:47:28,640 INFO L475 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2019-09-10 01:47:28,640 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 01:47:28,640 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2019-09-10 01:47:28,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-10 01:47:28,641 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:47:28,642 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:47:28,642 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:47:28,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:28,642 INFO L82 PathProgramCache]: Analyzing trace with hash 102638040, now seen corresponding path program 1 times [2019-09-10 01:47:28,643 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:47:28,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:28,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:47:28,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:28,645 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:47:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:47:28,778 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 01:47:28,781 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:47:28,781 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 01:47:28,782 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 22 with the following transitions: [2019-09-10 01:47:28,786 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [7], [10], [12], [16], [21], [24], [32], [38], [39], [42], [151], [157], [158], [159] [2019-09-10 01:47:28,828 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 01:47:28,837 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 01:47:28,914 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 01:47:28,916 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 19 root evaluator evaluations with a maximum evaluation depth of 0. Performed 19 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 33 variables. [2019-09-10 01:47:28,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:28,920 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 01:47:28,953 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-10 01:47:28,953 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 01:47:28,954 INFO L420 sIntCurrentIteration]: We unified 20 AI predicates to 20 [2019-09-10 01:47:28,955 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 01:47:28,955 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 01:47:28,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2019-09-10 01:47:28,955 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:47:28,956 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:47:28,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:47:28,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:47:28,956 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand 2 states. [2019-09-10 01:47:28,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:47:28,957 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-10 01:47:28,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:47:28,957 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2019-09-10 01:47:28,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:47:28,958 INFO L225 Difference]: With dead ends: 6 [2019-09-10 01:47:28,958 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 01:47:28,958 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:47:28,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 01:47:28,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 01:47:28,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 01:47:28,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 01:47:28,959 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2019-09-10 01:47:28,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:47:28,959 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 01:47:28,959 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:47:28,960 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 01:47:28,960 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 01:47:28,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:47:28 BoogieIcfgContainer [2019-09-10 01:47:28,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:47:28,967 INFO L168 Benchmark]: Toolchain (without parser) took 2711.40 ms. Allocated memory was 141.0 MB in the beginning and 228.1 MB in the end (delta: 87.0 MB). Free memory was 88.0 MB in the beginning and 156.6 MB in the end (delta: -68.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2019-09-10 01:47:28,968 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 107.3 MB in the beginning and 107.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:47:28,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 649.54 ms. Allocated memory was 141.0 MB in the beginning and 200.8 MB in the end (delta: 59.8 MB). Free memory was 87.8 MB in the beginning and 166.2 MB in the end (delta: -78.4 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:47:28,970 INFO L168 Benchmark]: Boogie Preprocessor took 102.53 ms. Allocated memory is still 200.8 MB. Free memory was 166.2 MB in the beginning and 163.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2019-09-10 01:47:28,971 INFO L168 Benchmark]: RCFGBuilder took 713.51 ms. Allocated memory is still 200.8 MB. Free memory was 163.2 MB in the beginning and 116.5 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:47:28,972 INFO L168 Benchmark]: TraceAbstraction took 1241.82 ms. Allocated memory was 200.8 MB in the beginning and 228.1 MB in the end (delta: 27.3 MB). Free memory was 116.5 MB in the beginning and 156.6 MB in the end (delta: -40.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 01:47:28,976 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 107.3 MB in the beginning and 107.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 649.54 ms. Allocated memory was 141.0 MB in the beginning and 200.8 MB in the end (delta: 59.8 MB). Free memory was 87.8 MB in the beginning and 166.2 MB in the end (delta: -78.4 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 102.53 ms. Allocated memory is still 200.8 MB. Free memory was 166.2 MB in the beginning and 163.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 713.51 ms. Allocated memory is still 200.8 MB. Free memory was 163.2 MB in the beginning and 116.5 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1241.82 ms. Allocated memory was 200.8 MB in the beginning and 228.1 MB in the end (delta: 27.3 MB). Free memory was 116.5 MB in the beginning and 156.6 MB in the end (delta: -40.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 997]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1035]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1000]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 42 locations, 3 error locations. SAFE Result, 1.1s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 109 SDtfs, 50 SDslu, 99 SDs, 0 SdLazy, 82 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=3, 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, 0.925 AbsIntWeakeningRatio, 1.4 AbsIntAvgWeakeningVarsNumRemoved, 0.3 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 3812 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 3/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...