java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/list-simple/sll2n_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:29:05,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:29:05,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:29:05,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:29:05,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:29:05,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:29:05,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:29:05,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:29:05,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:29:05,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:29:05,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:29:05,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:29:05,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:29:05,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:29:05,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:29:05,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:29:05,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:29:05,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:29:05,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:29:05,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:29:05,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:29:05,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:29:05,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:29:05,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:29:05,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:29:05,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:29:05,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:29:05,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:29:05,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:29:05,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:29:05,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:29:05,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:29:05,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:29:05,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:29:05,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:29:05,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:29:05,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:29:05,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:29:05,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:29:05,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:29:05,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:29:05,961 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 13:29:05,975 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:29:05,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:29:05,976 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:29:05,976 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:29:05,977 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:29:05,977 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:29:05,977 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:29:05,977 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:29:05,978 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:29:05,978 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:29:05,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:29:05,979 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:29:05,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:29:05,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:29:05,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:29:05,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:29:05,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:29:05,980 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:29:05,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:29:05,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:29:05,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:29:05,981 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:29:05,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:29:05,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:29:05,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:29:05,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:29:05,982 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:29:05,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:29:05,982 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:29:05,982 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:29:06,026 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:29:06,041 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:29:06,048 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:29:06,050 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:29:06,050 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:29:06,051 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_remove_all.i [2019-09-20 13:29:06,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdfab5f60/57cb782db0f34a75b35d5b1afd86fb43/FLAG0f158af77 [2019-09-20 13:29:06,678 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:29:06,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_remove_all.i [2019-09-20 13:29:06,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdfab5f60/57cb782db0f34a75b35d5b1afd86fb43/FLAG0f158af77 [2019-09-20 13:29:06,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdfab5f60/57cb782db0f34a75b35d5b1afd86fb43 [2019-09-20 13:29:06,980 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:29:06,981 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:29:06,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:29:06,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:29:06,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:29:06,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:29:06" (1/1) ... [2019-09-20 13:29:06,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f0baabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:06, skipping insertion in model container [2019-09-20 13:29:06,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:29:06" (1/1) ... [2019-09-20 13:29:06,997 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:29:07,041 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:29:07,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:29:07,557 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:29:07,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:29:07,690 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:29:07,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:07 WrapperNode [2019-09-20 13:29:07,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:29:07,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:29:07,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:29:07,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:29:07,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:07" (1/1) ... [2019-09-20 13:29:07,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:07" (1/1) ... [2019-09-20 13:29:07,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:07" (1/1) ... [2019-09-20 13:29:07,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:07" (1/1) ... [2019-09-20 13:29:07,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:07" (1/1) ... [2019-09-20 13:29:07,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:07" (1/1) ... [2019-09-20 13:29:07,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:07" (1/1) ... [2019-09-20 13:29:07,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:29:07,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:29:07,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:29:07,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:29:07,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:07" (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 13:29:07,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:29:07,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:29:07,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-20 13:29:07,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-20 13:29:07,827 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-20 13:29:07,827 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-20 13:29:07,827 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-09-20 13:29:07,827 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_remove_first [2019-09-20 13:29:07,827 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:29:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:29:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-20 13:29:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-20 13:29:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-20 13:29:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-20 13:29:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-20 13:29:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-20 13:29:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-20 13:29:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-20 13:29:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-20 13:29:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-20 13:29:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-20 13:29:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-20 13:29:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-20 13:29:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-20 13:29:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-20 13:29:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-20 13:29:07,831 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-20 13:29:07,831 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-20 13:29:07,831 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-20 13:29:07,831 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-20 13:29:07,831 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-20 13:29:07,831 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-20 13:29:07,831 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-20 13:29:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-20 13:29:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-20 13:29:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-20 13:29:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-20 13:29:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-20 13:29:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-20 13:29:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-20 13:29:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-20 13:29:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-20 13:29:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-20 13:29:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-20 13:29:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-20 13:29:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-20 13:29:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-20 13:29:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-20 13:29:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-20 13:29:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-20 13:29:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-20 13:29:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-20 13:29:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-20 13:29:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-20 13:29:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-20 13:29:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-20 13:29:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-20 13:29:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-20 13:29:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-20 13:29:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-20 13:29:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-20 13:29:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-20 13:29:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:29:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-20 13:29:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-20 13:29:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:29:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-20 13:29:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-20 13:29:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-20 13:29:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-20 13:29:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-20 13:29:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-20 13:29:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-20 13:29:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-20 13:29:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-20 13:29:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-20 13:29:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-20 13:29:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-20 13:29:07,839 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-20 13:29:07,839 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-20 13:29:07,839 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-20 13:29:07,839 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-20 13:29:07,839 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-20 13:29:07,839 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-20 13:29:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-20 13:29:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-20 13:29:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-20 13:29:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-20 13:29:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-20 13:29:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-20 13:29:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-20 13:29:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-20 13:29:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-20 13:29:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-20 13:29:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-20 13:29:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-20 13:29:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-20 13:29:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-20 13:29:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-20 13:29:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-20 13:29:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-20 13:29:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-20 13:29:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-20 13:29:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-20 13:29:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-20 13:29:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-20 13:29:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-20 13:29:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-20 13:29:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-20 13:29:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-20 13:29:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-20 13:29:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-20 13:29:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-20 13:29:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-20 13:29:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-20 13:29:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-20 13:29:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-20 13:29:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:29:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:29:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:29:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-09-20 13:29:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure sll_remove_first [2019-09-20 13:29:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:29:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:29:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:29:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:29:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-20 13:29:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:29:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:29:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:29:08,211 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-20 13:29:08,361 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:29:08,361 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-20 13:29:08,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:08 BoogieIcfgContainer [2019-09-20 13:29:08,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:29:08,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:29:08,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:29:08,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:29:08,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:29:06" (1/3) ... [2019-09-20 13:29:08,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5822e76c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:08, skipping insertion in model container [2019-09-20 13:29:08,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:07" (2/3) ... [2019-09-20 13:29:08,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5822e76c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:08, skipping insertion in model container [2019-09-20 13:29:08,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:08" (3/3) ... [2019-09-20 13:29:08,374 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_remove_all.i [2019-09-20 13:29:08,385 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:29:08,396 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:29:08,414 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:29:08,440 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:29:08,440 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:29:08,440 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:29:08,440 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:29:08,441 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:29:08,441 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:29:08,441 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:29:08,441 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:29:08,453 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-09-20 13:29:08,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-20 13:29:08,463 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:08,465 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:08,466 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:08,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:08,471 INFO L82 PathProgramCache]: Analyzing trace with hash -638260892, now seen corresponding path program 1 times [2019-09-20 13:29:08,473 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:08,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:08,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:08,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:08,543 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:08,640 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 13:29:08,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:08,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:29:08,643 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:08,653 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:08,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:08,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:08,683 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-09-20 13:29:08,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:08,711 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2019-09-20 13:29:08,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:08,714 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-09-20 13:29:08,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:08,732 INFO L225 Difference]: With dead ends: 38 [2019-09-20 13:29:08,732 INFO L226 Difference]: Without dead ends: 31 [2019-09-20 13:29:08,736 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 13:29:08,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-09-20 13:29:08,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-09-20 13:29:08,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-09-20 13:29:08,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2019-09-20 13:29:08,800 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 17 [2019-09-20 13:29:08,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:08,800 INFO L475 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2019-09-20 13:29:08,800 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:08,801 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2019-09-20 13:29:08,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-20 13:29:08,802 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:08,802 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:08,803 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:08,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:08,804 INFO L82 PathProgramCache]: Analyzing trace with hash 936264387, now seen corresponding path program 1 times [2019-09-20 13:29:08,805 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:08,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:08,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:08,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:08,820 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:08,960 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 13:29:08,961 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:08,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:29:08,961 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:08,964 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:29:08,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:29:08,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:29:08,965 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 4 states. [2019-09-20 13:29:09,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:09,019 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2019-09-20 13:29:09,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:29:09,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-09-20 13:29:09,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:09,022 INFO L225 Difference]: With dead ends: 34 [2019-09-20 13:29:09,022 INFO L226 Difference]: Without dead ends: 34 [2019-09-20 13:29:09,025 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 13:29:09,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-09-20 13:29:09,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2019-09-20 13:29:09,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-09-20 13:29:09,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2019-09-20 13:29:09,044 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 17 [2019-09-20 13:29:09,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:09,045 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2019-09-20 13:29:09,045 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:29:09,045 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2019-09-20 13:29:09,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-20 13:29:09,047 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:09,047 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] [2019-09-20 13:29:09,047 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:09,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:09,048 INFO L82 PathProgramCache]: Analyzing trace with hash -183361306, now seen corresponding path program 1 times [2019-09-20 13:29:09,048 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:09,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:09,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:09,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:09,055 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:09,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:09,215 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:29:09,215 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:29:09,216 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2019-09-20 13:29:09,218 INFO L207 CegarAbsIntRunner]: [7], [13], [23], [24], [35], [36], [37], [39], [45], [47], [50], [54], [57], [60], [65], [66], [74], [75], [76], [77], [78], [79], [80] [2019-09-20 13:29:09,255 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:29:09,255 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:29:09,320 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:29:09,322 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 13:29:09,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:09,325 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:29:09,355 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-20 13:29:09,356 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:29:09,358 INFO L420 sIntCurrentIteration]: We unified 22 AI predicates to 22 [2019-09-20 13:29:09,358 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:29:09,359 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:29:09,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2019-09-20 13:29:09,359 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:09,360 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:09,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:09,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:09,360 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 2 states. [2019-09-20 13:29:09,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:09,361 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-20 13:29:09,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:09,362 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2019-09-20 13:29:09,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:09,362 INFO L225 Difference]: With dead ends: 6 [2019-09-20 13:29:09,362 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:29:09,363 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 13:29:09,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:29:09,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:29:09,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:29:09,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:29:09,364 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-09-20 13:29:09,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:09,364 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:29:09,364 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:09,364 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:29:09,365 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:29:09,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:29:09 BoogieIcfgContainer [2019-09-20 13:29:09,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:29:09,373 INFO L168 Benchmark]: Toolchain (without parser) took 2391.46 ms. Allocated memory was 140.0 MB in the beginning and 224.4 MB in the end (delta: 84.4 MB). Free memory was 84.7 MB in the beginning and 178.2 MB in the end (delta: -93.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:29:09,374 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 104.7 MB in the beginning and 104.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:29:09,378 INFO L168 Benchmark]: CACSL2BoogieTranslator took 709.18 ms. Allocated memory was 140.0 MB in the beginning and 199.2 MB in the end (delta: 59.2 MB). Free memory was 84.5 MB in the beginning and 162.4 MB in the end (delta: -77.9 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:09,379 INFO L168 Benchmark]: Boogie Preprocessor took 69.37 ms. Allocated memory is still 199.2 MB. Free memory was 162.4 MB in the beginning and 159.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:09,382 INFO L168 Benchmark]: RCFGBuilder took 601.68 ms. Allocated memory is still 199.2 MB. Free memory was 159.5 MB in the beginning and 116.2 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:09,384 INFO L168 Benchmark]: TraceAbstraction took 1006.82 ms. Allocated memory was 199.2 MB in the beginning and 224.4 MB in the end (delta: 25.2 MB). Free memory was 115.6 MB in the beginning and 178.2 MB in the end (delta: -62.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:29:09,391 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 104.7 MB in the beginning and 104.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 709.18 ms. Allocated memory was 140.0 MB in the beginning and 199.2 MB in the end (delta: 59.2 MB). Free memory was 84.5 MB in the beginning and 162.4 MB in the end (delta: -77.9 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.37 ms. Allocated memory is still 199.2 MB. Free memory was 162.4 MB in the beginning and 159.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 601.68 ms. Allocated memory is still 199.2 MB. Free memory was 159.5 MB in the beginning and 116.2 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1006.82 ms. Allocated memory was 199.2 MB in the beginning and 224.4 MB in the end (delta: 25.2 MB). Free memory was 115.6 MB in the beginning and 178.2 MB in the end (delta: -62.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 598]: 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, 45 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 75 SDtfs, 9 SDslu, 50 SDs, 0 SdLazy, 6 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9545454545454546 AbsIntWeakeningRatio, 1.4545454545454546 AbsIntAvgWeakeningVarsNumRemoved, 0.2727272727272727 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1532 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...