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/dll-circular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 22:16:56,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 22:16:56,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 22:16:56,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 22:16:56,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 22:16:56,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 22:16:56,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 22:16:56,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 22:16:56,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 22:16:56,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 22:16:56,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 22:16:56,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 22:16:56,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 22:16:56,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 22:16:56,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 22:16:56,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 22:16:56,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 22:16:56,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 22:16:56,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 22:16:56,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 22:16:56,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 22:16:56,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 22:16:56,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 22:16:56,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 22:16:56,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 22:16:56,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 22:16:56,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 22:16:56,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 22:16:56,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 22:16:56,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 22:16:56,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 22:16:56,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 22:16:56,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 22:16:56,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 22:16:56,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 22:16:56,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 22:16:56,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 22:16:56,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 22:16:56,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 22:16:56,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 22:16:56,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 22:16:56,121 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 22:16:56,145 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 22:16:56,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 22:16:56,146 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 22:16:56,146 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 22:16:56,147 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 22:16:56,147 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 22:16:56,148 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 22:16:56,148 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 22:16:56,148 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 22:16:56,148 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 22:16:56,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 22:16:56,151 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 22:16:56,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 22:16:56,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 22:16:56,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 22:16:56,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 22:16:56,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 22:16:56,152 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 22:16:56,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 22:16:56,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 22:16:56,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 22:16:56,153 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 22:16:56,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 22:16:56,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 22:16:56,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 22:16:56,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 22:16:56,154 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 22:16:56,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 22:16:56,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 22:16:56,155 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 22:16:56,206 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 22:16:56,221 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 22:16:56,226 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 22:16:56,228 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 22:16:56,228 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 22:16:56,229 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-circular-2.i [2019-10-02 22:16:56,289 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/715b7d292/f248c3c5b1754966ae44c6eaf0db21d6/FLAG68e64fee0 [2019-10-02 22:16:56,820 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 22:16:56,821 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-circular-2.i [2019-10-02 22:16:56,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/715b7d292/f248c3c5b1754966ae44c6eaf0db21d6/FLAG68e64fee0 [2019-10-02 22:16:57,111 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/715b7d292/f248c3c5b1754966ae44c6eaf0db21d6 [2019-10-02 22:16:57,120 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 22:16:57,121 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 22:16:57,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 22:16:57,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 22:16:57,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 22:16:57,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:16:57" (1/1) ... [2019-10-02 22:16:57,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44c60bd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:16:57, skipping insertion in model container [2019-10-02 22:16:57,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:16:57" (1/1) ... [2019-10-02 22:16:57,137 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 22:16:57,175 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 22:16:57,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 22:16:57,611 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 22:16:57,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 22:16:57,710 INFO L192 MainTranslator]: Completed translation [2019-10-02 22:16:57,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:16:57 WrapperNode [2019-10-02 22:16:57,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 22:16:57,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 22:16:57,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 22:16:57,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 22:16:57,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:16:57" (1/1) ... [2019-10-02 22:16:57,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:16:57" (1/1) ... [2019-10-02 22:16:57,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:16:57" (1/1) ... [2019-10-02 22:16:57,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:16:57" (1/1) ... [2019-10-02 22:16:57,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:16:57" (1/1) ... [2019-10-02 22:16:57,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:16:57" (1/1) ... [2019-10-02 22:16:57,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:16:57" (1/1) ... [2019-10-02 22:16:57,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 22:16:57,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 22:16:57,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 22:16:57,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 22:16:57,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:16:57" (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 22:16:57,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 22:16:57,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 22:16:57,846 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 22:16:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-02 22:16:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-02 22:16:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-02 22:16:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-02 22:16:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-02 22:16:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-02 22:16:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-02 22:16:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-02 22:16:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-02 22:16:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-02 22:16:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-02 22:16:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-02 22:16:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-02 22:16:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-02 22:16:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-02 22:16:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-02 22:16:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-02 22:16:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-02 22:16:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-02 22:16:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-02 22:16:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-02 22:16:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-02 22:16:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-02 22:16:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-02 22:16:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-02 22:16:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-02 22:16:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-02 22:16:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-02 22:16:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-02 22:16:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-02 22:16:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-02 22:16:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-02 22:16:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-02 22:16:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-02 22:16:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-02 22:16:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-02 22:16:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-02 22:16:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-02 22:16:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-02 22:16:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-02 22:16:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-02 22:16:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-02 22:16:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-02 22:16:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-02 22:16:57,858 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-02 22:16:57,858 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-02 22:16:57,858 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-02 22:16:57,858 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-02 22:16:57,858 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-02 22:16:57,858 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-02 22:16:57,858 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-02 22:16:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-02 22:16:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-02 22:16:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-02 22:16:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-02 22:16:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-02 22:16:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-02 22:16:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-02 22:16:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-02 22:16:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-02 22:16:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-02 22:16:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-02 22:16:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-02 22:16:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 22:16:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-02 22:16:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-02 22:16:57,863 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-02 22:16:57,863 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-02 22:16:57,863 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-02 22:16:57,863 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-02 22:16:57,864 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-02 22:16:57,864 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-02 22:16:57,864 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-02 22:16:57,864 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-02 22:16:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-02 22:16:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-02 22:16:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-02 22:16:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-02 22:16:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-02 22:16:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-02 22:16:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-02 22:16:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-02 22:16:57,867 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-02 22:16:57,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-02 22:16:57,868 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-02 22:16:57,868 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-02 22:16:57,868 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-02 22:16:57,868 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-02 22:16:57,868 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-02 22:16:57,868 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-02 22:16:57,868 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-02 22:16:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-02 22:16:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-02 22:16:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-02 22:16:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-02 22:16:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-02 22:16:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-02 22:16:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-02 22:16:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-02 22:16:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-02 22:16:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-02 22:16:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-02 22:16:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-02 22:16:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 22:16:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 22:16:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 22:16:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-02 22:16:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-02 22:16:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 22:16:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-02 22:16:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 22:16:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 22:16:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 22:16:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 22:16:58,399 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 22:16:58,400 INFO L283 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-02 22:16:58,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:16:58 BoogieIcfgContainer [2019-10-02 22:16:58,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 22:16:58,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 22:16:58,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 22:16:58,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 22:16:58,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 10:16:57" (1/3) ... [2019-10-02 22:16:58,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181c4284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:16:58, skipping insertion in model container [2019-10-02 22:16:58,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:16:57" (2/3) ... [2019-10-02 22:16:58,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181c4284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:16:58, skipping insertion in model container [2019-10-02 22:16:58,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:16:58" (3/3) ... [2019-10-02 22:16:58,410 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-circular-2.i [2019-10-02 22:16:58,419 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 22:16:58,427 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-02 22:16:58,444 INFO L252 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-02 22:16:58,466 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 22:16:58,466 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 22:16:58,466 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 22:16:58,466 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 22:16:58,466 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 22:16:58,467 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 22:16:58,467 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 22:16:58,467 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 22:16:58,482 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-10-02 22:16:58,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-02 22:16:58,492 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:16:58,493 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:16:58,496 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:16:58,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:16:58,502 INFO L82 PathProgramCache]: Analyzing trace with hash 697609371, now seen corresponding path program 1 times [2019-10-02 22:16:58,504 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:16:58,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:16:58,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:16:58,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:16:58,569 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:16:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:16:58,663 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 22:16:58,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:16:58,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 22:16:58,666 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:16:58,671 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 22:16:58,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 22:16:58,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 22:16:58,690 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-10-02 22:16:58,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:16:58,711 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2019-10-02 22:16:58,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 22:16:58,714 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-02 22:16:58,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:16:58,725 INFO L225 Difference]: With dead ends: 37 [2019-10-02 22:16:58,726 INFO L226 Difference]: Without dead ends: 29 [2019-10-02 22:16:58,728 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 22:16:58,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-02 22:16:58,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-02 22:16:58,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-02 22:16:58,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2019-10-02 22:16:58,776 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 10 [2019-10-02 22:16:58,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:16:58,776 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2019-10-02 22:16:58,777 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 22:16:58,777 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2019-10-02 22:16:58,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-02 22:16:58,778 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:16:58,778 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:16:58,778 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:16:58,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:16:58,779 INFO L82 PathProgramCache]: Analyzing trace with hash 110085658, now seen corresponding path program 1 times [2019-10-02 22:16:58,779 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:16:58,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:16:58,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:16:58,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:16:58,784 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:16:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:16:58,969 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 22:16:58,969 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:16:58,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 22:16:58,970 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:16:58,971 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 22:16:58,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 22:16:58,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 22:16:58,972 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 4 states. [2019-10-02 22:16:59,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:16:59,072 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2019-10-02 22:16:59,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 22:16:59,074 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-02 22:16:59,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:16:59,075 INFO L225 Difference]: With dead ends: 38 [2019-10-02 22:16:59,075 INFO L226 Difference]: Without dead ends: 38 [2019-10-02 22:16:59,077 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 22:16:59,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-02 22:16:59,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 30. [2019-10-02 22:16:59,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-02 22:16:59,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2019-10-02 22:16:59,089 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 11 [2019-10-02 22:16:59,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:16:59,090 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2019-10-02 22:16:59,090 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 22:16:59,090 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2019-10-02 22:16:59,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-02 22:16:59,091 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:16:59,091 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:16:59,092 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:16:59,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:16:59,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1113502754, now seen corresponding path program 1 times [2019-10-02 22:16:59,093 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:16:59,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:16:59,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:16:59,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:16:59,101 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:16:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:16:59,221 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 22:16:59,222 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:16:59,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 22:16:59,222 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:16:59,222 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 22:16:59,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 22:16:59,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 22:16:59,223 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 3 states. [2019-10-02 22:16:59,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:16:59,252 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2019-10-02 22:16:59,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 22:16:59,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-02 22:16:59,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:16:59,258 INFO L225 Difference]: With dead ends: 49 [2019-10-02 22:16:59,258 INFO L226 Difference]: Without dead ends: 49 [2019-10-02 22:16:59,258 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 22:16:59,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-10-02 22:16:59,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 36. [2019-10-02 22:16:59,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-02 22:16:59,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2019-10-02 22:16:59,272 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 14 [2019-10-02 22:16:59,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:16:59,272 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2019-10-02 22:16:59,272 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 22:16:59,272 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2019-10-02 22:16:59,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 22:16:59,273 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:16:59,273 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:16:59,274 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:16:59,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:16:59,275 INFO L82 PathProgramCache]: Analyzing trace with hash 488230675, now seen corresponding path program 1 times [2019-10-02 22:16:59,275 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:16:59,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:16:59,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:16:59,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:16:59,281 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:16:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:16:59,329 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 22:16:59,329 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:16:59,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 22:16:59,330 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:16:59,330 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 22:16:59,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 22:16:59,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 22:16:59,331 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 3 states. [2019-10-02 22:16:59,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:16:59,349 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2019-10-02 22:16:59,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 22:16:59,350 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-10-02 22:16:59,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:16:59,351 INFO L225 Difference]: With dead ends: 37 [2019-10-02 22:16:59,351 INFO L226 Difference]: Without dead ends: 37 [2019-10-02 22:16:59,352 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 22:16:59,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-02 22:16:59,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-10-02 22:16:59,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-02 22:16:59,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2019-10-02 22:16:59,356 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 16 [2019-10-02 22:16:59,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:16:59,358 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2019-10-02 22:16:59,358 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 22:16:59,358 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2019-10-02 22:16:59,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 22:16:59,359 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:16:59,360 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:16:59,360 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:16:59,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:16:59,360 INFO L82 PathProgramCache]: Analyzing trace with hash 488232597, now seen corresponding path program 1 times [2019-10-02 22:16:59,361 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:16:59,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:16:59,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:16:59,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:16:59,365 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:16:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:16:59,610 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 22:16:59,610 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:16:59,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 22:16:59,611 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:16:59,611 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 22:16:59,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 22:16:59,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 22:16:59,612 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 5 states. [2019-10-02 22:16:59,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:16:59,864 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2019-10-02 22:16:59,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-02 22:16:59,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-10-02 22:16:59,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:16:59,866 INFO L225 Difference]: With dead ends: 45 [2019-10-02 22:16:59,866 INFO L226 Difference]: Without dead ends: 35 [2019-10-02 22:16:59,866 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-02 22:16:59,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-02 22:16:59,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-10-02 22:16:59,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-02 22:16:59,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2019-10-02 22:16:59,871 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 16 [2019-10-02 22:16:59,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:16:59,871 INFO L475 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2019-10-02 22:16:59,871 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 22:16:59,872 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2019-10-02 22:16:59,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 22:16:59,872 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:16:59,872 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:16:59,873 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:16:59,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:16:59,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1339394310, now seen corresponding path program 1 times [2019-10-02 22:16:59,873 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:16:59,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:16:59,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:16:59,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:16:59,877 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:16:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:17:00,007 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 22:17:00,008 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 22:17:00,008 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 22:17:00,009 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2019-10-02 22:17:00,011 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [7], [10], [12], [28], [30], [40], [52], [58], [59], [132], [137], [138], [139] [2019-10-02 22:17:00,055 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 22:17:00,056 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 22:17:00,145 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 22:17:00,146 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 19 root evaluator evaluations with a maximum evaluation depth of 0. Performed 19 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 33 variables. [2019-10-02 22:17:00,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:17:00,151 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 22:17:00,184 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-02 22:17:00,184 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 22:17:00,186 INFO L420 sIntCurrentIteration]: We unified 15 AI predicates to 15 [2019-10-02 22:17:00,186 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 22:17:00,187 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 22:17:00,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2019-10-02 22:17:00,187 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:17:00,188 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 22:17:00,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 22:17:00,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 22:17:00,188 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand 2 states. [2019-10-02 22:17:00,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:17:00,189 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-02 22:17:00,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 22:17:00,189 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-02 22:17:00,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:17:00,190 INFO L225 Difference]: With dead ends: 6 [2019-10-02 22:17:00,190 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 22:17:00,190 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 22:17:00,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 22:17:00,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 22:17:00,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 22:17:00,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 22:17:00,191 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-10-02 22:17:00,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:17:00,192 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 22:17:00,192 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 22:17:00,192 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 22:17:00,192 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 22:17:00,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 10:17:00 BoogieIcfgContainer [2019-10-02 22:17:00,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 22:17:00,200 INFO L168 Benchmark]: Toolchain (without parser) took 3077.71 ms. Allocated memory was 131.1 MB in the beginning and 219.2 MB in the end (delta: 88.1 MB). Free memory was 85.5 MB in the beginning and 105.7 MB in the end (delta: -20.2 MB). Peak memory consumption was 67.9 MB. Max. memory is 7.1 GB. [2019-10-02 22:17:00,201 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 131.1 MB. Free memory is still 105.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-02 22:17:00,202 INFO L168 Benchmark]: CACSL2BoogieTranslator took 588.79 ms. Allocated memory was 131.1 MB in the beginning and 199.2 MB in the end (delta: 68.2 MB). Free memory was 85.1 MB in the beginning and 163.3 MB in the end (delta: -78.2 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2019-10-02 22:17:00,203 INFO L168 Benchmark]: Boogie Preprocessor took 72.18 ms. Allocated memory is still 199.2 MB. Free memory was 163.3 MB in the beginning and 160.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2019-10-02 22:17:00,203 INFO L168 Benchmark]: RCFGBuilder took 617.99 ms. Allocated memory is still 199.2 MB. Free memory was 160.2 MB in the beginning and 114.9 MB in the end (delta: 45.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. [2019-10-02 22:17:00,204 INFO L168 Benchmark]: TraceAbstraction took 1794.66 ms. Allocated memory was 199.2 MB in the beginning and 219.2 MB in the end (delta: 19.9 MB). Free memory was 114.9 MB in the beginning and 105.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2019-10-02 22:17:00,208 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 131.1 MB. Free memory is still 105.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 588.79 ms. Allocated memory was 131.1 MB in the beginning and 199.2 MB in the end (delta: 68.2 MB). Free memory was 85.1 MB in the beginning and 163.3 MB in the end (delta: -78.2 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.18 ms. Allocated memory is still 199.2 MB. Free memory was 163.3 MB in the beginning and 160.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 617.99 ms. Allocated memory is still 199.2 MB. Free memory was 160.2 MB in the beginning and 114.9 MB in the end (delta: 45.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1794.66 ms. Allocated memory was 199.2 MB in the beginning and 219.2 MB in the end (delta: 19.9 MB). Free memory was 114.9 MB in the beginning and 105.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1015]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1024]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1020]: 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, 1.7s 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, 0.2s 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, 1.1333333333333333 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, 0.6s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 7609 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...