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-efa34d5 [2019-09-16 17:07:03,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:07:03,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:07:03,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:07:03,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:07:03,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:07:03,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:07:03,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:07:03,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:07:03,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:07:03,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:07:03,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:07:03,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:07:03,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:07:03,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:07:03,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:07:03,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:07:03,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:07:03,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:07:03,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:07:03,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:07:03,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:07:03,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:07:03,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:07:03,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:07:03,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:07:03,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:07:03,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:07:03,925 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:07:03,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:07:03,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:07:03,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:07:03,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:07:03,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:07:03,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:07:03,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:07:03,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:07:03,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:07:03,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:07:03,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:07:03,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:07:03,933 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 [2019-09-16 17:07:03,950 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:07:03,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:07:03,950 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:07:03,951 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:07:03,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:07:03,954 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:07:03,955 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:07:03,955 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:07:03,955 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:07:03,955 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:07:03,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:07:03,957 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:07:03,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:07:03,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:07:03,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:07:03,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:07:03,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:07:03,958 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:07:03,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:07:03,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:07:03,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:07:03,960 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:07:03,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:07:03,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:07:03,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:07:03,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:07:03,961 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:07:03,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:07:03,961 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:07:03,962 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:07:04,018 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:07:04,032 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:07:04,036 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:07:04,037 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:07:04,037 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:07:04,038 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-circular-2.i [2019-09-16 17:07:04,121 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/463f601ee/d20e4d40da7e436bad0e8a9f449d6868/FLAGa429e6ca1 [2019-09-16 17:07:04,615 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:07:04,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-circular-2.i [2019-09-16 17:07:04,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/463f601ee/d20e4d40da7e436bad0e8a9f449d6868/FLAGa429e6ca1 [2019-09-16 17:07:04,974 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/463f601ee/d20e4d40da7e436bad0e8a9f449d6868 [2019-09-16 17:07:04,983 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:07:04,985 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:07:04,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:07:04,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:07:04,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:07:04,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:07:04" (1/1) ... [2019-09-16 17:07:04,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a4d9462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:04, skipping insertion in model container [2019-09-16 17:07:04,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:07:04" (1/1) ... [2019-09-16 17:07:05,002 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:07:05,064 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:07:05,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:07:05,539 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:07:05,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:07:05,658 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:07:05,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:05 WrapperNode [2019-09-16 17:07:05,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:07:05,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:07:05,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:07:05,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:07:05,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:05" (1/1) ... [2019-09-16 17:07:05,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:05" (1/1) ... [2019-09-16 17:07:05,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:05" (1/1) ... [2019-09-16 17:07:05,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:05" (1/1) ... [2019-09-16 17:07:05,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:05" (1/1) ... [2019-09-16 17:07:05,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:05" (1/1) ... [2019-09-16 17:07:05,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:05" (1/1) ... [2019-09-16 17:07:05,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:07:05,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:07:05,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:07:05,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:07:05,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:05" (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 [2019-09-16 17:07:05,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:07:05,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:07:05,795 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:07:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-16 17:07:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-16 17:07:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-16 17:07:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-16 17:07:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-16 17:07:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-16 17:07:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-16 17:07:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-16 17:07:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-16 17:07:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-16 17:07:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-16 17:07:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-16 17:07:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-16 17:07:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-16 17:07:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-16 17:07:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-16 17:07:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-16 17:07:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-16 17:07:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-16 17:07:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-16 17:07:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-16 17:07:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-16 17:07:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-16 17:07:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-16 17:07:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-16 17:07:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-16 17:07:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-16 17:07:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-16 17:07:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-16 17:07:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-16 17:07:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-16 17:07:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-16 17:07:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-16 17:07:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-16 17:07:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-16 17:07:05,801 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-16 17:07:05,801 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-16 17:07:05,801 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-16 17:07:05,801 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-16 17:07:05,801 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-16 17:07:05,801 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-16 17:07:05,801 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-16 17:07:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-16 17:07:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-16 17:07:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-16 17:07:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-16 17:07:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-16 17:07:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-16 17:07:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-16 17:07:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-16 17:07:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:07:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-16 17:07:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-16 17:07:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:07:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-16 17:07:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-16 17:07:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-16 17:07:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-16 17:07:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-16 17:07:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-16 17:07:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-16 17:07:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-16 17:07:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-16 17:07:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-16 17:07:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-16 17:07:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-16 17:07:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-16 17:07:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-16 17:07:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-16 17:07:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-16 17:07:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-16 17:07:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-16 17:07:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-16 17:07:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-16 17:07:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-16 17:07:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-16 17:07:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-16 17:07:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-16 17:07:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-16 17:07:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-16 17:07:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-16 17:07:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-16 17:07:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-16 17:07:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-16 17:07:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-16 17:07:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-16 17:07:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-16 17:07:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-16 17:07:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-16 17:07:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-16 17:07:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-16 17:07:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-16 17:07:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-16 17:07:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-16 17:07:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-16 17:07:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-16 17:07:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-16 17:07:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-16 17:07:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-16 17:07:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-16 17:07:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-16 17:07:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-16 17:07:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-16 17:07:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:07:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:07:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:07:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:07:05,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:07:05,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:07:05,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:07:05,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:07:05,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:07:05,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:07:05,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:07:06,358 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:07:06,359 INFO L283 CfgBuilder]: Removed 9 assume(true) statements. [2019-09-16 17:07:06,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:07:06 BoogieIcfgContainer [2019-09-16 17:07:06,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:07:06,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:07:06,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:07:06,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:07:06,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:07:04" (1/3) ... [2019-09-16 17:07:06,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242b887d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:07:06, skipping insertion in model container [2019-09-16 17:07:06,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:05" (2/3) ... [2019-09-16 17:07:06,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242b887d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:07:06, skipping insertion in model container [2019-09-16 17:07:06,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:07:06" (3/3) ... [2019-09-16 17:07:06,369 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-circular-2.i [2019-09-16 17:07:06,379 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:07:06,387 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-09-16 17:07:06,404 INFO L252 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-09-16 17:07:06,429 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:07:06,429 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:07:06,429 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:07:06,429 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:07:06,429 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:07:06,430 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:07:06,430 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:07:06,430 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:07:06,446 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-09-16 17:07:06,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-16 17:07:06,456 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:06,457 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:07:06,459 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:06,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:06,465 INFO L82 PathProgramCache]: Analyzing trace with hash 697609371, now seen corresponding path program 1 times [2019-09-16 17:07:06,468 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:06,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:06,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:06,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:06,527 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:06,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:07:06,622 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:06,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:07:06,623 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:06,627 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:07:06,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:07:06,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:07:06,641 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-09-16 17:07:06,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:06,660 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2019-09-16 17:07:06,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:07:06,661 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-16 17:07:06,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:06,671 INFO L225 Difference]: With dead ends: 37 [2019-09-16 17:07:06,671 INFO L226 Difference]: Without dead ends: 29 [2019-09-16 17:07:06,673 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 [2019-09-16 17:07:06,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-16 17:07:06,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-09-16 17:07:06,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-09-16 17:07:06,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2019-09-16 17:07:06,708 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 10 [2019-09-16 17:07:06,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:06,709 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2019-09-16 17:07:06,709 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:07:06,709 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2019-09-16 17:07:06,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-16 17:07:06,709 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:06,710 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:07:06,710 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:06,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:06,710 INFO L82 PathProgramCache]: Analyzing trace with hash 110085658, now seen corresponding path program 1 times [2019-09-16 17:07:06,711 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:06,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:06,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:06,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:06,716 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:06,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:07:06,900 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:06,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:07:06,900 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:06,902 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:07:06,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:07:06,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:07:06,903 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 4 states. [2019-09-16 17:07:07,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:07,037 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2019-09-16 17:07:07,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:07:07,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-09-16 17:07:07,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:07,040 INFO L225 Difference]: With dead ends: 38 [2019-09-16 17:07:07,040 INFO L226 Difference]: Without dead ends: 38 [2019-09-16 17:07:07,041 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 [2019-09-16 17:07:07,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-09-16 17:07:07,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 30. [2019-09-16 17:07:07,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-09-16 17:07:07,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2019-09-16 17:07:07,052 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 11 [2019-09-16 17:07:07,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:07,052 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2019-09-16 17:07:07,052 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:07:07,053 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2019-09-16 17:07:07,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-16 17:07:07,053 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:07,054 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:07:07,054 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:07,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:07,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1113502754, now seen corresponding path program 1 times [2019-09-16 17:07:07,055 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:07,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:07,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:07,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:07,064 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:07,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:07:07,186 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:07,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:07:07,186 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:07,186 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:07:07,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:07:07,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:07:07,190 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 3 states. [2019-09-16 17:07:07,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:07,218 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2019-09-16 17:07:07,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:07:07,220 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-09-16 17:07:07,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:07,223 INFO L225 Difference]: With dead ends: 49 [2019-09-16 17:07:07,226 INFO L226 Difference]: Without dead ends: 49 [2019-09-16 17:07:07,226 INFO L636 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 [2019-09-16 17:07:07,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-09-16 17:07:07,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 36. [2019-09-16 17:07:07,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-16 17:07:07,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2019-09-16 17:07:07,236 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 14 [2019-09-16 17:07:07,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:07,236 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2019-09-16 17:07:07,236 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:07:07,236 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2019-09-16 17:07:07,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-16 17:07:07,237 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:07,237 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:07:07,238 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:07,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:07,238 INFO L82 PathProgramCache]: Analyzing trace with hash 488230675, now seen corresponding path program 1 times [2019-09-16 17:07:07,238 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:07,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:07,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:07,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:07,242 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:07,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:07:07,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:07,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:07:07,297 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:07,298 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:07:07,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:07:07,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:07:07,300 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 3 states. [2019-09-16 17:07:07,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:07,319 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2019-09-16 17:07:07,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:07:07,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-09-16 17:07:07,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:07,322 INFO L225 Difference]: With dead ends: 37 [2019-09-16 17:07:07,322 INFO L226 Difference]: Without dead ends: 37 [2019-09-16 17:07:07,324 INFO L636 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 [2019-09-16 17:07:07,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-09-16 17:07:07,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-09-16 17:07:07,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-09-16 17:07:07,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2019-09-16 17:07:07,329 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 16 [2019-09-16 17:07:07,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:07,329 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2019-09-16 17:07:07,329 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:07:07,329 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2019-09-16 17:07:07,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-16 17:07:07,330 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:07,330 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:07:07,331 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:07,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:07,331 INFO L82 PathProgramCache]: Analyzing trace with hash 488232597, now seen corresponding path program 1 times [2019-09-16 17:07:07,331 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:07,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:07,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:07,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:07,335 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:07,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:07:07,552 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:07,552 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 17:07:07,552 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:07,553 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 17:07:07,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 17:07:07,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:07:07,554 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 5 states. [2019-09-16 17:07:07,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:07,802 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2019-09-16 17:07:07,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:07:07,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-09-16 17:07:07,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:07,804 INFO L225 Difference]: With dead ends: 45 [2019-09-16 17:07:07,804 INFO L226 Difference]: Without dead ends: 35 [2019-09-16 17:07:07,805 INFO L636 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 [2019-09-16 17:07:07,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-16 17:07:07,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-09-16 17:07:07,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-09-16 17:07:07,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2019-09-16 17:07:07,813 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 16 [2019-09-16 17:07:07,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:07,813 INFO L475 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2019-09-16 17:07:07,813 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 17:07:07,814 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2019-09-16 17:07:07,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-16 17:07:07,815 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:07,815 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:07:07,816 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:07,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:07,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1339394310, now seen corresponding path program 1 times [2019-09-16 17:07:07,816 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:07,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:07,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:07,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:07,822 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:07,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:07,908 ERROR L253 erpolLogProxyWrapper]: Interpolant 7 not inductive [2019-09-16 17:07:07,927 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:221) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:863) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:284) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:215) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:461) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:371) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-09-16 17:07:07,935 INFO L168 Benchmark]: Toolchain (without parser) took 2949.01 ms. Allocated memory was 138.9 MB in the beginning and 221.8 MB in the end (delta: 82.8 MB). Free memory was 85.0 MB in the beginning and 126.6 MB in the end (delta: -41.6 MB). Peak memory consumption was 41.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:07,937 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 104.8 MB in the beginning and 104.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:07:07,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.85 ms. Allocated memory was 138.9 MB in the beginning and 198.7 MB in the end (delta: 59.8 MB). Free memory was 84.8 MB in the beginning and 163.5 MB in the end (delta: -78.7 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:07,940 INFO L168 Benchmark]: Boogie Preprocessor took 69.20 ms. Allocated memory is still 198.7 MB. Free memory was 163.5 MB in the beginning and 161.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:07,941 INFO L168 Benchmark]: RCFGBuilder took 624.40 ms. Allocated memory is still 198.7 MB. Free memory was 160.4 MB in the beginning and 116.3 MB in the end (delta: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:07,943 INFO L168 Benchmark]: TraceAbstraction took 1569.28 ms. Allocated memory was 198.7 MB in the beginning and 221.8 MB in the end (delta: 23.1 MB). Free memory was 116.3 MB in the beginning and 126.6 MB in the end (delta: -10.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:07,952 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 138.9 MB. Free memory was 104.8 MB in the beginning and 104.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 673.85 ms. Allocated memory was 138.9 MB in the beginning and 198.7 MB in the end (delta: 59.8 MB). Free memory was 84.8 MB in the beginning and 163.5 MB in the end (delta: -78.7 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.20 ms. Allocated memory is still 198.7 MB. Free memory was 163.5 MB in the beginning and 161.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 624.40 ms. Allocated memory is still 198.7 MB. Free memory was 160.4 MB in the beginning and 116.3 MB in the end (delta: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1569.28 ms. Allocated memory was 198.7 MB in the beginning and 221.8 MB in the end (delta: 23.1 MB). Free memory was 116.3 MB in the beginning and 126.6 MB in the end (delta: -10.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:221) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...