java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/list-simple/sll2c_remove_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:29:03,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:29:03,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:29:03,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:29:03,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:29:03,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:29:03,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:29:03,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:29:03,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:29:03,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:29:03,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:29:03,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:29:03,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:29:03,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:29:03,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:29:03,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:29:03,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:29:03,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:29:03,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:29:03,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:29:03,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:29:03,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:29:03,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:29:03,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:29:03,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:29:03,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:29:03,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:29:03,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:29:03,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:29:03,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:29:03,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:29:03,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:29:03,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:29:03,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:29:03,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:29:03,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:29:03,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:29:03,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:29:03,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:29:03,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:29:03,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:29:03,980 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:29:03,999 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:29:04,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:29:04,001 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:29:04,002 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:29:04,002 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:29:04,003 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:29:04,003 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:29:04,003 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:29:04,003 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:29:04,003 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:29:04,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:29:04,006 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:29:04,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:29:04,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:29:04,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:29:04,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:29:04,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:29:04,007 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:29:04,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:29:04,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:29:04,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:29:04,008 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:29:04,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:29:04,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:29:04,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:29:04,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:29:04,011 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:29:04,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:29:04,011 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:29:04,011 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:29:04,069 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:29:04,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:29:04,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:29:04,094 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:29:04,095 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:29:04,096 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_remove_all_reverse.i [2019-09-20 13:29:04,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9581f6df7/58324e26a5c542a584ed79a98068f921/FLAGbc2376c5f [2019-09-20 13:29:04,779 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:29:04,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_remove_all_reverse.i [2019-09-20 13:29:04,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9581f6df7/58324e26a5c542a584ed79a98068f921/FLAGbc2376c5f [2019-09-20 13:29:05,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9581f6df7/58324e26a5c542a584ed79a98068f921 [2019-09-20 13:29:05,037 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:29:05,039 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:29:05,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:29:05,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:29:05,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:29:05,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:29:05" (1/1) ... [2019-09-20 13:29:05,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@580a67ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:05, skipping insertion in model container [2019-09-20 13:29:05,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:29:05" (1/1) ... [2019-09-20 13:29:05,055 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:29:05,105 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:29:05,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:29:05,544 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:29:05,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:29:05,665 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:29:05,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:05 WrapperNode [2019-09-20 13:29:05,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:29:05,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:29:05,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:29:05,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:29:05,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:05" (1/1) ... [2019-09-20 13:29:05,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:05" (1/1) ... [2019-09-20 13:29:05,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:05" (1/1) ... [2019-09-20 13:29:05,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:05" (1/1) ... [2019-09-20 13:29:05,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:05" (1/1) ... [2019-09-20 13:29:05,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:05" (1/1) ... [2019-09-20 13:29:05,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:05" (1/1) ... [2019-09-20 13:29:05,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:29:05,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:29:05,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:29:05,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:29:05,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:29:05,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:29:05,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:29:05,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-20 13:29:05,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-20 13:29:05,795 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-20 13:29:05,795 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-20 13:29:05,795 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-09-20 13:29:05,795 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_remove_last [2019-09-20 13:29:05,796 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:29:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:29:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-20 13:29:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-20 13:29:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-20 13:29:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-20 13:29:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-20 13:29:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-20 13:29:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-20 13:29:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-20 13:29:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-20 13:29:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-20 13:29:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-20 13:29:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-20 13:29:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-20 13:29:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-20 13:29:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-20 13:29:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-20 13:29:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-20 13:29:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-20 13:29:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-20 13:29:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-20 13:29:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-20 13:29:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-20 13:29:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-20 13:29:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-20 13:29:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-20 13:29:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-20 13:29:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-20 13:29:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-20 13:29:05,801 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-20 13:29:05,801 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-20 13:29:05,801 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-20 13:29:05,801 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-20 13:29:05,801 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-20 13:29:05,801 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-20 13:29:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-20 13:29:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-20 13:29:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-20 13:29:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-20 13:29:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-20 13:29:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-20 13:29:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-20 13:29:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-20 13:29:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-20 13:29:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-20 13:29:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-20 13:29:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-20 13:29:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-20 13:29:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-20 13:29:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-20 13:29:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-20 13:29:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-20 13:29:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-20 13:29:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:29:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-20 13:29:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-20 13:29:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:29:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-20 13:29:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-20 13:29:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-20 13:29:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-20 13:29:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-20 13:29:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-20 13:29:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-20 13:29:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-20 13:29:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-20 13:29:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-20 13:29:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-20 13:29:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-20 13:29:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-20 13:29:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-20 13:29:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-20 13:29:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-20 13:29:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-20 13:29:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-20 13:29:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-20 13:29:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-20 13:29:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-20 13:29:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-20 13:29:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-20 13:29:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-20 13:29:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-20 13:29:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-20 13:29:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-20 13:29:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-20 13:29:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-20 13:29:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-20 13:29:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-20 13:29:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-20 13:29:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-20 13:29:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-20 13:29:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-20 13:29:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-20 13:29:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-20 13:29:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-20 13:29:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-20 13:29:05,812 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-20 13:29:05,812 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-20 13:29:05,812 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-20 13:29:05,812 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-20 13:29:05,812 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-20 13:29:05,812 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-20 13:29:05,812 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-20 13:29:05,813 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-20 13:29:05,813 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-20 13:29:05,813 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-20 13:29:05,813 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-20 13:29:05,813 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-20 13:29:05,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:29:05,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:29:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:29:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-09-20 13:29:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_remove_last [2019-09-20 13:29:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:29:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:29:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:29:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:29:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-20 13:29:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:29:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:29:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:29:06,206 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-20 13:29:06,374 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:29:06,374 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-20 13:29:06,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:06 BoogieIcfgContainer [2019-09-20 13:29:06,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:29:06,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:29:06,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:29:06,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:29:06,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:29:05" (1/3) ... [2019-09-20 13:29:06,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dfda03b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:06, skipping insertion in model container [2019-09-20 13:29:06,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:05" (2/3) ... [2019-09-20 13:29:06,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dfda03b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:06, skipping insertion in model container [2019-09-20 13:29:06,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:06" (3/3) ... [2019-09-20 13:29:06,385 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_remove_all_reverse.i [2019-09-20 13:29:06,396 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:29:06,407 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:29:06,424 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:29:06,455 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:29:06,456 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:29:06,456 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:29:06,456 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:29:06,456 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:29:06,457 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:29:06,457 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:29:06,457 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:29:06,472 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-09-20 13:29:06,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-20 13:29:06,484 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:06,485 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:06,487 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:06,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:06,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1597421219, now seen corresponding path program 1 times [2019-09-20 13:29:06,496 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:06,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:06,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:06,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:06,568 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:06,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:06,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:06,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:29:06,730 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:06,737 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:06,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:06,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:06,754 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2019-09-20 13:29:06,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:06,772 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2019-09-20 13:29:06,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:06,773 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2019-09-20 13:29:06,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:06,782 INFO L225 Difference]: With dead ends: 46 [2019-09-20 13:29:06,782 INFO L226 Difference]: Without dead ends: 39 [2019-09-20 13:29:06,784 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:06,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-09-20 13:29:06,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-09-20 13:29:06,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-20 13:29:06,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2019-09-20 13:29:06,825 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 24 [2019-09-20 13:29:06,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:06,827 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2019-09-20 13:29:06,827 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:06,827 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2019-09-20 13:29:06,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-20 13:29:06,829 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:06,829 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:06,830 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:06,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:06,830 INFO L82 PathProgramCache]: Analyzing trace with hash 657162430, now seen corresponding path program 1 times [2019-09-20 13:29:06,831 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:06,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:06,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:06,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:06,836 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:06,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:06,973 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:06,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:29:06,974 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:06,977 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:29:06,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:29:06,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:29:06,979 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 5 states. [2019-09-20 13:29:07,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:07,059 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2019-09-20 13:29:07,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:29:07,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-09-20 13:29:07,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:07,062 INFO L225 Difference]: With dead ends: 45 [2019-09-20 13:29:07,062 INFO L226 Difference]: Without dead ends: 42 [2019-09-20 13:29:07,063 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:29:07,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-09-20 13:29:07,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2019-09-20 13:29:07,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-20 13:29:07,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2019-09-20 13:29:07,072 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 24 [2019-09-20 13:29:07,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:07,073 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2019-09-20 13:29:07,073 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:29:07,073 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2019-09-20 13:29:07,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-20 13:29:07,075 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:07,075 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:07,075 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:07,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:07,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1280322166, now seen corresponding path program 1 times [2019-09-20 13:29:07,076 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:07,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:07,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:07,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:07,082 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-20 13:29:07,206 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:07,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:29:07,207 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:07,208 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:29:07,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:29:07,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:29:07,209 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 4 states. [2019-09-20 13:29:07,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:07,240 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2019-09-20 13:29:07,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:29:07,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-09-20 13:29:07,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:07,242 INFO L225 Difference]: With dead ends: 43 [2019-09-20 13:29:07,243 INFO L226 Difference]: Without dead ends: 43 [2019-09-20 13:29:07,243 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:29:07,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-09-20 13:29:07,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2019-09-20 13:29:07,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-09-20 13:29:07,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2019-09-20 13:29:07,253 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 32 [2019-09-20 13:29:07,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:07,253 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2019-09-20 13:29:07,254 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:29:07,254 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2019-09-20 13:29:07,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-20 13:29:07,256 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:07,256 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:07,257 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:07,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:07,257 INFO L82 PathProgramCache]: Analyzing trace with hash 410004661, now seen corresponding path program 1 times [2019-09-20 13:29:07,257 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:07,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:07,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:07,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:07,265 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:07,447 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-20 13:29:07,447 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:07,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:29:07,448 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:07,448 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:29:07,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:29:07,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:29:07,449 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 6 states. [2019-09-20 13:29:07,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:07,631 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2019-09-20 13:29:07,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:29:07,631 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2019-09-20 13:29:07,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:07,633 INFO L225 Difference]: With dead ends: 56 [2019-09-20 13:29:07,633 INFO L226 Difference]: Without dead ends: 41 [2019-09-20 13:29:07,633 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:29:07,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-09-20 13:29:07,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-09-20 13:29:07,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-09-20 13:29:07,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2019-09-20 13:29:07,639 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 42 [2019-09-20 13:29:07,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:07,640 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2019-09-20 13:29:07,640 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:29:07,640 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2019-09-20 13:29:07,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-20 13:29:07,641 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:07,642 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:07,642 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:07,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:07,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1436962146, now seen corresponding path program 1 times [2019-09-20 13:29:07,643 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:07,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:07,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:07,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:07,647 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:07,728 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-20 13:29:07,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:07,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:29:07,729 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:07,729 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:29:07,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:29:07,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:29:07,730 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 4 states. [2019-09-20 13:29:07,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:07,789 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2019-09-20 13:29:07,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:29:07,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2019-09-20 13:29:07,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:07,791 INFO L225 Difference]: With dead ends: 45 [2019-09-20 13:29:07,791 INFO L226 Difference]: Without dead ends: 43 [2019-09-20 13:29:07,792 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:29:07,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-09-20 13:29:07,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-09-20 13:29:07,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-09-20 13:29:07,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2019-09-20 13:29:07,797 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 45 [2019-09-20 13:29:07,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:07,797 INFO L475 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2019-09-20 13:29:07,797 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:29:07,797 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2019-09-20 13:29:07,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-20 13:29:07,799 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:07,799 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:07,799 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:07,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:07,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1302090595, now seen corresponding path program 1 times [2019-09-20 13:29:07,800 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:07,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:07,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:07,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:07,805 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:07,965 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-20 13:29:07,965 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:29:07,965 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:29:07,966 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 48 with the following transitions: [2019-09-20 13:29:07,968 INFO L207 CegarAbsIntRunner]: [7], [13], [15], [16], [17], [18], [19], [21], [27], [29], [32], [36], [39], [42], [45], [50], [53], [55], [59], [64], [69], [72], [78], [80], [83], [85], [92], [94], [96], [100], [101], [107], [108], [109], [110], [111], [112], [113], [114], [115], [116], [117] [2019-09-20 13:29:08,008 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:29:08,008 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:29:08,075 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:29:08,076 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 0. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 26 variables. [2019-09-20 13:29:08,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:08,080 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:29:08,118 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-20 13:29:08,118 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:29:08,121 INFO L420 sIntCurrentIteration]: We unified 46 AI predicates to 46 [2019-09-20 13:29:08,121 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:29:08,122 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:29:08,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2019-09-20 13:29:08,122 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:08,123 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:08,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:08,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:08,124 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 2 states. [2019-09-20 13:29:08,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:08,124 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-20 13:29:08,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:08,125 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 47 [2019-09-20 13:29:08,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:08,125 INFO L225 Difference]: With dead ends: 6 [2019-09-20 13:29:08,125 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:29:08,126 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:08,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:29:08,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:29:08,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:29:08,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:29:08,127 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2019-09-20 13:29:08,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:08,127 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:29:08,127 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:08,127 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:29:08,127 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:29:08,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:29:08 BoogieIcfgContainer [2019-09-20 13:29:08,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:29:08,137 INFO L168 Benchmark]: Toolchain (without parser) took 3097.76 ms. Allocated memory was 137.4 MB in the beginning and 218.1 MB in the end (delta: 80.7 MB). Free memory was 83.6 MB in the beginning and 97.0 MB in the end (delta: -13.4 MB). Peak memory consumption was 67.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:08,140 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.4 MB. Free memory was 103.5 MB in the beginning and 103.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:29:08,141 INFO L168 Benchmark]: CACSL2BoogieTranslator took 626.87 ms. Allocated memory was 137.4 MB in the beginning and 198.7 MB in the end (delta: 61.3 MB). Free memory was 83.3 MB in the beginning and 163.4 MB in the end (delta: -80.0 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:08,142 INFO L168 Benchmark]: Boogie Preprocessor took 61.50 ms. Allocated memory is still 198.7 MB. Free memory was 163.4 MB in the beginning and 159.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:08,143 INFO L168 Benchmark]: RCFGBuilder took 647.62 ms. Allocated memory is still 198.7 MB. Free memory was 159.9 MB in the beginning and 111.9 MB in the end (delta: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:08,144 INFO L168 Benchmark]: TraceAbstraction took 1757.35 ms. Allocated memory was 198.7 MB in the beginning and 218.1 MB in the end (delta: 19.4 MB). Free memory was 111.2 MB in the beginning and 97.0 MB in the end (delta: 14.3 MB). Peak memory consumption was 33.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:08,149 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.4 MB. Free memory was 103.5 MB in the beginning and 103.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 626.87 ms. Allocated memory was 137.4 MB in the beginning and 198.7 MB in the end (delta: 61.3 MB). Free memory was 83.3 MB in the beginning and 163.4 MB in the end (delta: -80.0 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.50 ms. Allocated memory is still 198.7 MB. Free memory was 163.4 MB in the beginning and 159.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 647.62 ms. Allocated memory is still 198.7 MB. Free memory was 159.9 MB in the beginning and 111.9 MB in the end (delta: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1757.35 ms. Allocated memory was 198.7 MB in the beginning and 218.1 MB in the end (delta: 19.4 MB). Free memory was 111.2 MB in the beginning and 97.0 MB in the end (delta: 14.3 MB). Peak memory consumption was 33.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 613]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 53 locations, 1 error locations. SAFE Result, 1.6s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 220 SDtfs, 41 SDslu, 334 SDs, 0 SdLazy, 137 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 0.9782608695652174 AbsIntWeakeningRatio, 1.5869565217391304 AbsIntAvgWeakeningVarsNumRemoved, 0.13043478260869565 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 214 NumberOfCodeBlocks, 214 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 15792 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 28/29 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...