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-circular-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 22:17:48,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 22:17:48,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 22:17:48,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 22:17:48,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 22:17:48,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 22:17:48,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 22:17:48,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 22:17:48,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 22:17:48,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 22:17:48,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 22:17:48,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 22:17:48,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 22:17:48,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 22:17:48,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 22:17:48,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 22:17:48,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 22:17:48,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 22:17:48,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 22:17:48,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 22:17:48,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 22:17:48,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 22:17:48,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 22:17:48,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 22:17:48,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 22:17:48,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 22:17:48,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 22:17:48,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 22:17:48,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 22:17:48,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 22:17:48,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 22:17:48,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 22:17:48,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 22:17:48,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 22:17:48,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 22:17:48,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 22:17:48,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 22:17:48,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 22:17:48,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 22:17:48,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 22:17:48,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 22:17:48,734 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 [2019-10-02 22:17:48,749 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 22:17:48,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 22:17:48,749 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 22:17:48,750 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 22:17:48,750 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 22:17:48,750 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 22:17:48,751 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 22:17:48,751 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 22:17:48,751 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 22:17:48,751 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 22:17:48,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 22:17:48,752 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 22:17:48,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 22:17:48,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 22:17:48,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 22:17:48,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 22:17:48,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 22:17:48,753 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 22:17:48,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 22:17:48,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 22:17:48,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 22:17:48,754 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 22:17:48,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 22:17:48,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 22:17:48,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 22:17:48,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 22:17:48,755 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 22:17:48,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 22:17:48,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 22:17:48,756 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 22:17:48,786 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 22:17:48,796 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 22:17:48,799 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 22:17:48,801 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 22:17:48,801 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 22:17:48,802 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-circular-1.i [2019-10-02 22:17:48,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c27f5e3a/b255c342cca44b3a8a57b8719c56a073/FLAG4f6877258 [2019-10-02 22:17:49,418 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 22:17:49,419 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-circular-1.i [2019-10-02 22:17:49,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c27f5e3a/b255c342cca44b3a8a57b8719c56a073/FLAG4f6877258 [2019-10-02 22:17:49,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c27f5e3a/b255c342cca44b3a8a57b8719c56a073 [2019-10-02 22:17:49,701 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 22:17:49,702 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 22:17:49,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 22:17:49,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 22:17:49,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 22:17:49,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:17:49" (1/1) ... [2019-10-02 22:17:49,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@339748d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:17:49, skipping insertion in model container [2019-10-02 22:17:49,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:17:49" (1/1) ... [2019-10-02 22:17:49,718 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 22:17:49,769 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 22:17:50,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 22:17:50,191 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 22:17:50,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 22:17:50,306 INFO L192 MainTranslator]: Completed translation [2019-10-02 22:17:50,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:17:50 WrapperNode [2019-10-02 22:17:50,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 22:17:50,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 22:17:50,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 22:17:50,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 22:17:50,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:17:50" (1/1) ... [2019-10-02 22:17:50,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:17:50" (1/1) ... [2019-10-02 22:17:50,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:17:50" (1/1) ... [2019-10-02 22:17:50,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:17:50" (1/1) ... [2019-10-02 22:17:50,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:17:50" (1/1) ... [2019-10-02 22:17:50,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:17:50" (1/1) ... [2019-10-02 22:17:50,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:17:50" (1/1) ... [2019-10-02 22:17:50,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 22:17:50,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 22:17:50,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 22:17:50,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 22:17:50,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:17:50" (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 [2019-10-02 22:17:50,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 22:17:50,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 22:17:50,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 22:17:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-02 22:17:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-02 22:17:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-02 22:17:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-02 22:17:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-02 22:17:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-02 22:17:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-02 22:17:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-02 22:17:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-02 22:17:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-02 22:17:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-02 22:17:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-02 22:17:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-02 22:17:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-02 22:17:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-02 22:17:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-02 22:17:50,429 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-02 22:17:50,429 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-02 22:17:50,429 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-02 22:17:50,429 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-02 22:17:50,429 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-02 22:17:50,429 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-02 22:17:50,430 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-02 22:17:50,430 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-02 22:17:50,430 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-02 22:17:50,430 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-02 22:17:50,430 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-02 22:17:50,430 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-02 22:17:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-02 22:17:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-02 22:17:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-02 22:17:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-02 22:17:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-02 22:17:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-02 22:17:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-02 22:17:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-02 22:17:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-02 22:17:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-02 22:17:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-02 22:17:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-02 22:17:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-02 22:17:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-02 22:17:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-02 22:17:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-02 22:17:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-02 22:17:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-02 22:17:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-02 22:17:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-02 22:17:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-02 22:17:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-02 22:17:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-02 22:17:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-02 22:17:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-02 22:17:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-02 22:17:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-02 22:17:50,435 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-02 22:17:50,435 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-02 22:17:50,435 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-02 22:17:50,435 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-02 22:17:50,435 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-02 22:17:50,435 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-02 22:17:50,436 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-02 22:17:50,436 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-02 22:17:50,436 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 22:17:50,436 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-02 22:17:50,436 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-02 22:17:50,436 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-02 22:17:50,437 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-02 22:17:50,437 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-02 22:17:50,437 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-02 22:17:50,437 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-02 22:17:50,437 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-02 22:17:50,437 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-02 22:17:50,437 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-02 22:17:50,438 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-02 22:17:50,438 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-02 22:17:50,438 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-02 22:17:50,438 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-02 22:17:50,438 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-02 22:17:50,438 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-02 22:17:50,439 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-02 22:17:50,439 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-02 22:17:50,439 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-02 22:17:50,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-02 22:17:50,439 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-02 22:17:50,439 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-02 22:17:50,439 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-02 22:17:50,440 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-02 22:17:50,440 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-02 22:17:50,440 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-02 22:17:50,440 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-02 22:17:50,440 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-02 22:17:50,440 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-02 22:17:50,441 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-02 22:17:50,441 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-02 22:17:50,441 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-02 22:17:50,441 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-02 22:17:50,441 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-02 22:17:50,441 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-02 22:17:50,441 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-02 22:17:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-02 22:17:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-02 22:17:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-02 22:17:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 22:17:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 22:17:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 22:17:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-02 22:17:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-02 22:17:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 22:17:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-02 22:17:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 22:17:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 22:17:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 22:17:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 22:17:50,951 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 22:17:50,952 INFO L283 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-02 22:17:50,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:17:50 BoogieIcfgContainer [2019-10-02 22:17:50,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 22:17:50,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 22:17:50,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 22:17:50,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 22:17:50,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 10:17:49" (1/3) ... [2019-10-02 22:17:50,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1066db2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:17:50, skipping insertion in model container [2019-10-02 22:17:50,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:17:50" (2/3) ... [2019-10-02 22:17:50,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1066db2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:17:50, skipping insertion in model container [2019-10-02 22:17:50,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:17:50" (3/3) ... [2019-10-02 22:17:50,962 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-circular-1.i [2019-10-02 22:17:50,971 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 22:17:50,980 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-02 22:17:50,996 INFO L252 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-02 22:17:51,022 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 22:17:51,022 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 22:17:51,023 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 22:17:51,023 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 22:17:51,023 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 22:17:51,023 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 22:17:51,023 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 22:17:51,024 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 22:17:51,039 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-10-02 22:17:51,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-02 22:17:51,049 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:17:51,050 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:17:51,052 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:17:51,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:17:51,058 INFO L82 PathProgramCache]: Analyzing trace with hash 697609371, now seen corresponding path program 1 times [2019-10-02 22:17:51,060 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:17:51,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:51,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:17:51,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:51,126 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:17:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:17:51,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:17:51,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:17:51,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 22:17:51,222 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:17:51,227 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 22:17:51,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 22:17:51,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 22:17:51,242 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-10-02 22:17:51,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:17:51,261 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2019-10-02 22:17:51,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 22:17:51,263 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-02 22:17:51,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:17:51,272 INFO L225 Difference]: With dead ends: 37 [2019-10-02 22:17:51,273 INFO L226 Difference]: Without dead ends: 29 [2019-10-02 22:17:51,275 INFO L640 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 [2019-10-02 22:17:51,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-02 22:17:51,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-02 22:17:51,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-02 22:17:51,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2019-10-02 22:17:51,310 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 10 [2019-10-02 22:17:51,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:17:51,311 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2019-10-02 22:17:51,311 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 22:17:51,311 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2019-10-02 22:17:51,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-02 22:17:51,311 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:17:51,312 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:17:51,312 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:17:51,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:17:51,313 INFO L82 PathProgramCache]: Analyzing trace with hash 110085658, now seen corresponding path program 1 times [2019-10-02 22:17:51,313 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:17:51,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:51,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:17:51,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:51,318 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:17:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:17:51,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:17:51,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:17:51,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 22:17:51,464 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:17:51,466 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 22:17:51,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 22:17:51,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 22:17:51,466 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 4 states. [2019-10-02 22:17:51,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:17:51,588 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2019-10-02 22:17:51,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 22:17:51,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-02 22:17:51,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:17:51,591 INFO L225 Difference]: With dead ends: 38 [2019-10-02 22:17:51,591 INFO L226 Difference]: Without dead ends: 38 [2019-10-02 22:17:51,593 INFO L640 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 [2019-10-02 22:17:51,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-02 22:17:51,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 30. [2019-10-02 22:17:51,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-02 22:17:51,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2019-10-02 22:17:51,602 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 11 [2019-10-02 22:17:51,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:17:51,603 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2019-10-02 22:17:51,603 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 22:17:51,603 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2019-10-02 22:17:51,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-02 22:17:51,604 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:17:51,605 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:17:51,605 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:17:51,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:17:51,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1113502754, now seen corresponding path program 1 times [2019-10-02 22:17:51,606 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:17:51,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:51,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:17:51,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:51,646 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:17:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:17:51,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:17:51,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:17:51,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 22:17:51,742 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:17:51,742 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 22:17:51,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 22:17:51,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 22:17:51,743 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 3 states. [2019-10-02 22:17:51,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:17:51,774 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2019-10-02 22:17:51,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 22:17:51,775 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-02 22:17:51,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:17:51,778 INFO L225 Difference]: With dead ends: 49 [2019-10-02 22:17:51,778 INFO L226 Difference]: Without dead ends: 49 [2019-10-02 22:17:51,778 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 22:17:51,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-10-02 22:17:51,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 36. [2019-10-02 22:17:51,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-02 22:17:51,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2019-10-02 22:17:51,785 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 14 [2019-10-02 22:17:51,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:17:51,785 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2019-10-02 22:17:51,785 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 22:17:51,785 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2019-10-02 22:17:51,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 22:17:51,786 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:17:51,786 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:17:51,787 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:17:51,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:17:51,787 INFO L82 PathProgramCache]: Analyzing trace with hash 488230675, now seen corresponding path program 1 times [2019-10-02 22:17:51,787 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:17:51,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:51,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:17:51,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:51,791 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:17:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:17:51,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:17:51,832 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:17:51,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 22:17:51,833 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:17:51,833 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 22:17:51,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 22:17:51,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 22:17:51,834 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 3 states. [2019-10-02 22:17:51,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:17:51,851 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2019-10-02 22:17:51,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 22:17:51,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-10-02 22:17:51,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:17:51,853 INFO L225 Difference]: With dead ends: 37 [2019-10-02 22:17:51,854 INFO L226 Difference]: Without dead ends: 37 [2019-10-02 22:17:51,855 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 22:17:51,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-02 22:17:51,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-10-02 22:17:51,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-02 22:17:51,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2019-10-02 22:17:51,862 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 16 [2019-10-02 22:17:51,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:17:51,862 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2019-10-02 22:17:51,862 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 22:17:51,863 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2019-10-02 22:17:51,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 22:17:51,864 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:17:51,864 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:17:51,866 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:17:51,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:17:51,866 INFO L82 PathProgramCache]: Analyzing trace with hash 488232597, now seen corresponding path program 1 times [2019-10-02 22:17:51,866 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:17:51,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:51,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:17:51,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:51,874 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:17:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:17:52,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:17:52,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:17:52,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 22:17:52,085 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:17:52,086 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 22:17:52,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 22:17:52,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 22:17:52,087 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 5 states. [2019-10-02 22:17:52,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:17:52,268 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2019-10-02 22:17:52,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-02 22:17:52,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-10-02 22:17:52,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:17:52,270 INFO L225 Difference]: With dead ends: 45 [2019-10-02 22:17:52,270 INFO L226 Difference]: Without dead ends: 35 [2019-10-02 22:17:52,271 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-02 22:17:52,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-02 22:17:52,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-10-02 22:17:52,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-02 22:17:52,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2019-10-02 22:17:52,275 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 16 [2019-10-02 22:17:52,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:17:52,275 INFO L475 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2019-10-02 22:17:52,276 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 22:17:52,276 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2019-10-02 22:17:52,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 22:17:52,276 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:17:52,277 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:17:52,277 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:17:52,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:17:52,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1339394310, now seen corresponding path program 1 times [2019-10-02 22:17:52,277 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:17:52,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:52,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:17:52,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:52,281 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:17:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:17:52,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:17:52,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 22:17:52,375 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 22:17:52,377 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2019-10-02 22:17:52,379 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [7], [10], [12], [28], [30], [40], [52], [58], [59], [132], [137], [138], [139] [2019-10-02 22:17:52,423 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 22:17:52,423 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 22:17:52,519 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 22:17:52,521 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 31 variables. [2019-10-02 22:17:52,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:17:52,526 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 22:17:52,579 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-02 22:17:52,579 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 22:17:52,581 INFO L420 sIntCurrentIteration]: We unified 15 AI predicates to 15 [2019-10-02 22:17:52,581 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 22:17:52,582 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 22:17:52,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2019-10-02 22:17:52,582 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:17:52,583 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 22:17:52,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 22:17:52,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 22:17:52,584 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand 2 states. [2019-10-02 22:17:52,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:17:52,585 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-02 22:17:52,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 22:17:52,585 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-02 22:17:52,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:17:52,586 INFO L225 Difference]: With dead ends: 6 [2019-10-02 22:17:52,586 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 22:17:52,587 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 22:17:52,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 22:17:52,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 22:17:52,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 22:17:52,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 22:17:52,588 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-10-02 22:17:52,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:17:52,588 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 22:17:52,588 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 22:17:52,588 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 22:17:52,588 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 22:17:52,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 10:17:52 BoogieIcfgContainer [2019-10-02 22:17:52,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 22:17:52,599 INFO L168 Benchmark]: Toolchain (without parser) took 2894.41 ms. Allocated memory was 135.3 MB in the beginning and 227.0 MB in the end (delta: 91.8 MB). Free memory was 85.9 MB in the beginning and 120.0 MB in the end (delta: -34.1 MB). Peak memory consumption was 57.7 MB. Max. memory is 7.1 GB. [2019-10-02 22:17:52,599 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 135.3 MB. Free memory is still 105.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-02 22:17:52,601 INFO L168 Benchmark]: CACSL2BoogieTranslator took 604.55 ms. Allocated memory was 135.3 MB in the beginning and 200.8 MB in the end (delta: 65.5 MB). Free memory was 85.5 MB in the beginning and 166.6 MB in the end (delta: -81.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2019-10-02 22:17:52,602 INFO L168 Benchmark]: Boogie Preprocessor took 58.79 ms. Allocated memory is still 200.8 MB. Free memory was 166.6 MB in the beginning and 163.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2019-10-02 22:17:52,604 INFO L168 Benchmark]: RCFGBuilder took 586.00 ms. Allocated memory is still 200.8 MB. Free memory was 163.2 MB in the beginning and 119.3 MB in the end (delta: 43.8 MB). Peak memory consumption was 43.8 MB. Max. memory is 7.1 GB. [2019-10-02 22:17:52,605 INFO L168 Benchmark]: TraceAbstraction took 1640.71 ms. Allocated memory was 200.8 MB in the beginning and 227.0 MB in the end (delta: 26.2 MB). Free memory was 119.3 MB in the beginning and 120.0 MB in the end (delta: -635.1 kB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2019-10-02 22:17:52,615 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 135.3 MB. Free memory is still 105.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 604.55 ms. Allocated memory was 135.3 MB in the beginning and 200.8 MB in the end (delta: 65.5 MB). Free memory was 85.5 MB in the beginning and 166.6 MB in the end (delta: -81.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.79 ms. Allocated memory is still 200.8 MB. Free memory was 166.6 MB in the beginning and 163.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 586.00 ms. Allocated memory is still 200.8 MB. Free memory was 163.2 MB in the beginning and 119.3 MB in the end (delta: 43.8 MB). Peak memory consumption was 43.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1640.71 ms. Allocated memory was 200.8 MB in the beginning and 227.0 MB in the end (delta: 26.2 MB). Free memory was 119.3 MB in the beginning and 120.0 MB in the end (delta: -635.1 kB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1021]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1012]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1017]: 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, 38 locations, 3 error locations. SAFE Result, 1.5s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 154 SDtfs, 50 SDslu, 135 SDs, 0 SdLazy, 90 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 0.8833333333333333 AbsIntWeakeningRatio, 1.0 AbsIntAvgWeakeningVarsNumRemoved, 0.4 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 6499 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...