java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/list-simple/sll2n_append_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:48:11,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:48:11,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:48:11,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 01:48:11,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 01:48:11,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 01:48:11,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 01:48:11,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 01:48:11,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 01:48:11,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 01:48:11,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 01:48:11,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 01:48:11,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:48:11,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:48:11,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:48:11,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:48:11,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:48:11,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:48:11,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:48:11,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:48:11,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:48:11,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:48:11,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:48:11,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:48:11,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 01:48:11,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 01:48:11,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 01:48:11,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 01:48:11,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 01:48:11,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 01:48:11,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:48:11,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:48:11,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:48:11,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:48:11,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:48:11,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:48:11,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:48:11,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:48:11,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:48:11,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:48:11,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:48:11,412 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 01:48:11,436 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:48:11,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:48:11,437 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:48:11,437 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:48:11,438 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:48:11,438 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:48:11,438 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:48:11,439 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:48:11,439 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:48:11,439 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:48:11,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:48:11,441 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:48:11,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:48:11,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:48:11,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:48:11,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:48:11,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:48:11,443 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:48:11,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:48:11,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:48:11,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:48:11,444 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:48:11,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:48:11,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:48:11,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:48:11,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:48:11,445 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:48:11,445 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:48:11,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:48:11,446 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:48:11,501 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:48:11,515 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:48:11,519 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:48:11,521 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:48:11,522 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:48:11,523 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_append_equal.i [2019-09-10 01:48:11,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06a72988e/90602b1c0df341258ffbc0f16feca321/FLAG5b69f3545 [2019-09-10 01:48:12,155 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:48:12,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_append_equal.i [2019-09-10 01:48:12,182 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06a72988e/90602b1c0df341258ffbc0f16feca321/FLAG5b69f3545 [2019-09-10 01:48:12,413 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06a72988e/90602b1c0df341258ffbc0f16feca321 [2019-09-10 01:48:12,424 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:48:12,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:48:12,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:48:12,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:48:12,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:48:12,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:48:12" (1/1) ... [2019-09-10 01:48:12,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dfefb61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:12, skipping insertion in model container [2019-09-10 01:48:12,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:48:12" (1/1) ... [2019-09-10 01:48:12,444 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:48:12,483 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:48:12,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:48:12,935 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:48:12,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:48:13,041 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:48:13,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:13 WrapperNode [2019-09-10 01:48:13,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:48:13,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:48:13,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:48:13,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:48:13,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:13" (1/1) ... [2019-09-10 01:48:13,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:13" (1/1) ... [2019-09-10 01:48:13,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:13" (1/1) ... [2019-09-10 01:48:13,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:13" (1/1) ... [2019-09-10 01:48:13,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:13" (1/1) ... [2019-09-10 01:48:13,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:13" (1/1) ... [2019-09-10 01:48:13,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:13" (1/1) ... [2019-09-10 01:48:13,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:48:13,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:48:13,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:48:13,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:48:13,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:13" (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 01:48:13,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:48:13,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:48:13,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-10 01:48:13,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-10 01:48:13,163 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-10 01:48:13,163 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-10 01:48:13,164 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-09-10 01:48:13,164 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-09-10 01:48:13,164 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2019-09-10 01:48:13,164 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:48:13,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:48:13,165 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-10 01:48:13,165 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-10 01:48:13,165 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-10 01:48:13,165 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-10 01:48:13,165 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-10 01:48:13,165 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-10 01:48:13,165 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-10 01:48:13,166 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-10 01:48:13,166 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-10 01:48:13,166 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-10 01:48:13,166 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-10 01:48:13,166 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-10 01:48:13,166 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-10 01:48:13,167 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-10 01:48:13,167 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-10 01:48:13,167 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-10 01:48:13,167 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-10 01:48:13,167 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-10 01:48:13,167 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-10 01:48:13,168 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-10 01:48:13,168 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-10 01:48:13,168 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-10 01:48:13,168 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-10 01:48:13,168 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-10 01:48:13,168 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-10 01:48:13,168 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-10 01:48:13,169 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-10 01:48:13,169 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-10 01:48:13,169 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-10 01:48:13,169 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-10 01:48:13,169 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-10 01:48:13,169 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-10 01:48:13,170 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-10 01:48:13,170 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-10 01:48:13,170 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-10 01:48:13,170 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-10 01:48:13,170 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-10 01:48:13,170 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-10 01:48:13,170 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-10 01:48:13,171 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-10 01:48:13,171 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-10 01:48:13,171 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-10 01:48:13,171 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-10 01:48:13,171 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-10 01:48:13,171 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-10 01:48:13,171 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-10 01:48:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-10 01:48:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-10 01:48:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-10 01:48:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-10 01:48:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-10 01:48:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-10 01:48:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 01:48:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-10 01:48:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-10 01:48:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 01:48:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-10 01:48:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-10 01:48:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-10 01:48:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-10 01:48:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-10 01:48:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-10 01:48:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-10 01:48:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-10 01:48:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-10 01:48:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-10 01:48:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-10 01:48:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-10 01:48:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-10 01:48:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-10 01:48:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-10 01:48:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-10 01:48:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-10 01:48:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-10 01:48:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-10 01:48:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-10 01:48:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-10 01:48:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-10 01:48:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-10 01:48:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-10 01:48:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-10 01:48:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-10 01:48:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-10 01:48:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-10 01:48:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-10 01:48:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-10 01:48:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-10 01:48:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-10 01:48:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-10 01:48:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-10 01:48:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-10 01:48:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-10 01:48:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-10 01:48:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-10 01:48:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-10 01:48:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-10 01:48:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-10 01:48:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-10 01:48:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-10 01:48:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-10 01:48:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-10 01:48:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-10 01:48:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-10 01:48:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-10 01:48:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-10 01:48:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-10 01:48:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-10 01:48:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 01:48:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 01:48:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:48:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-09-10 01:48:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-09-10 01:48:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 01:48:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:48:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2019-09-10 01:48:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:48:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:48:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-10 01:48:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:48:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:48:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:48:13,549 INFO L684 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-10 01:48:13,730 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:48:13,730 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-10 01:48:13,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:48:13 BoogieIcfgContainer [2019-09-10 01:48:13,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:48:13,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:48:13,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:48:13,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:48:13,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:48:12" (1/3) ... [2019-09-10 01:48:13,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd3eed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:48:13, skipping insertion in model container [2019-09-10 01:48:13,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:13" (2/3) ... [2019-09-10 01:48:13,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd3eed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:48:13, skipping insertion in model container [2019-09-10 01:48:13,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:48:13" (3/3) ... [2019-09-10 01:48:13,750 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_append_equal.i [2019-09-10 01:48:13,761 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:48:13,770 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:48:13,787 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:48:13,822 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:48:13,822 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:48:13,823 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:48:13,823 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:48:13,823 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:48:13,823 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:48:13,824 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:48:13,824 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:48:13,843 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2019-09-10 01:48:13,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-09-10 01:48:13,856 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:13,858 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, 1, 1] [2019-09-10 01:48:13,862 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:13,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:13,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1667158038, now seen corresponding path program 1 times [2019-09-10 01:48:13,871 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:13,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:13,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:13,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:13,927 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:14,067 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 01:48:14,069 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:48:14,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:48:14,075 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:14,082 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:48:14,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:48:14,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:48:14,100 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2019-09-10 01:48:14,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:14,117 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2019-09-10 01:48:14,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:48:14,118 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2019-09-10 01:48:14,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:14,126 INFO L225 Difference]: With dead ends: 50 [2019-09-10 01:48:14,127 INFO L226 Difference]: Without dead ends: 37 [2019-09-10 01:48:14,129 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 01:48:14,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-09-10 01:48:14,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-09-10 01:48:14,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-09-10 01:48:14,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2019-09-10 01:48:14,174 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 29 [2019-09-10 01:48:14,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:14,175 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2019-09-10 01:48:14,175 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:48:14,175 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2019-09-10 01:48:14,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-09-10 01:48:14,178 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:14,178 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, 1, 1] [2019-09-10 01:48:14,178 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:14,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:14,179 INFO L82 PathProgramCache]: Analyzing trace with hash 937001954, now seen corresponding path program 1 times [2019-09-10 01:48:14,179 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:14,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:14,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:14,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:14,182 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:14,334 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 01:48:14,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:48:14,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 01:48:14,335 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:14,337 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 01:48:14,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 01:48:14,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:48:14,340 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 5 states. [2019-09-10 01:48:14,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:14,399 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2019-09-10 01:48:14,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 01:48:14,417 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-09-10 01:48:14,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:14,418 INFO L225 Difference]: With dead ends: 44 [2019-09-10 01:48:14,418 INFO L226 Difference]: Without dead ends: 41 [2019-09-10 01:48:14,419 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 01:48:14,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-09-10 01:48:14,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2019-09-10 01:48:14,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-09-10 01:48:14,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2019-09-10 01:48:14,428 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 29 [2019-09-10 01:48:14,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:14,428 INFO L475 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2019-09-10 01:48:14,428 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 01:48:14,428 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2019-09-10 01:48:14,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-09-10 01:48:14,431 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:14,431 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:48:14,432 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:14,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:14,433 INFO L82 PathProgramCache]: Analyzing trace with hash -496897929, now seen corresponding path program 1 times [2019-09-10 01:48:14,434 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:14,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:14,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:14,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:14,436 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:14,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-10 01:48:14,593 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:48:14,593 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 01:48:14,594 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 39 with the following transitions: [2019-09-10 01:48:14,596 INFO L207 CegarAbsIntRunner]: [21], [27], [29], [31], [33], [37], [38], [39], [45], [47], [48], [49], [50], [51], [53], [55], [64], [67], [80], [83], [85], [88], [106], [112], [113], [116], [117], [118], [119], [122], [123], [124], [125], [126] [2019-09-10 01:48:14,647 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 01:48:14,648 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 01:48:14,718 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 01:48:14,720 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 0. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 32 variables. [2019-09-10 01:48:14,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:14,724 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 01:48:14,764 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-10 01:48:14,764 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 01:48:14,768 INFO L420 sIntCurrentIteration]: We unified 37 AI predicates to 37 [2019-09-10 01:48:14,768 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 01:48:14,769 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 01:48:14,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2019-09-10 01:48:14,769 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:14,772 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:48:14,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:48:14,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:48:14,773 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 2 states. [2019-09-10 01:48:14,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:14,779 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-10 01:48:14,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:48:14,779 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 38 [2019-09-10 01:48:14,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:14,781 INFO L225 Difference]: With dead ends: 6 [2019-09-10 01:48:14,782 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 01:48:14,782 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 37 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 01:48:14,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 01:48:14,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 01:48:14,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 01:48:14,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 01:48:14,783 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2019-09-10 01:48:14,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:14,785 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 01:48:14,785 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:48:14,786 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 01:48:14,786 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 01:48:14,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:48:14 BoogieIcfgContainer [2019-09-10 01:48:14,792 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:48:14,796 INFO L168 Benchmark]: Toolchain (without parser) took 2368.81 ms. Allocated memory was 132.6 MB in the beginning and 223.3 MB in the end (delta: 90.7 MB). Free memory was 87.3 MB in the beginning and 168.3 MB in the end (delta: -80.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:14,798 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 132.6 MB. Free memory was 107.2 MB in the beginning and 106.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:48:14,799 INFO L168 Benchmark]: CACSL2BoogieTranslator took 615.85 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 87.1 MB in the beginning and 160.9 MB in the end (delta: -73.8 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:14,801 INFO L168 Benchmark]: Boogie Preprocessor took 64.59 ms. Allocated memory is still 199.8 MB. Free memory was 160.9 MB in the beginning and 157.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:14,802 INFO L168 Benchmark]: RCFGBuilder took 624.56 ms. Allocated memory is still 199.8 MB. Free memory was 157.3 MB in the beginning and 110.5 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:14,804 INFO L168 Benchmark]: TraceAbstraction took 1059.19 ms. Allocated memory was 199.8 MB in the beginning and 223.3 MB in the end (delta: 23.6 MB). Free memory was 109.8 MB in the beginning and 168.3 MB in the end (delta: -58.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 01:48:14,815 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 132.6 MB. Free memory was 107.2 MB in the beginning and 106.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 615.85 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 87.1 MB in the beginning and 160.9 MB in the end (delta: -73.8 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.59 ms. Allocated memory is still 199.8 MB. Free memory was 160.9 MB in the beginning and 157.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 624.56 ms. Allocated memory is still 199.8 MB. Free memory was 157.3 MB in the beginning and 110.5 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1059.19 ms. Allocated memory was 199.8 MB in the beginning and 223.3 MB in the end (delta: 23.6 MB). Free memory was 109.8 MB in the beginning and 168.3 MB in the end (delta: -58.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 620]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 57 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 101 SDtfs, 13 SDslu, 102 SDs, 0 SdLazy, 18 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.972972972972973 AbsIntWeakeningRatio, 1.5945945945945945 AbsIntAvgWeakeningVarsNumRemoved, 0.16216216216216217 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 3957 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 5/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...