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/heap-data/cart.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 22:18:22,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 22:18:22,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 22:18:22,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 22:18:22,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 22:18:22,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 22:18:22,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 22:18:22,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 22:18:22,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 22:18:22,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 22:18:22,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 22:18:22,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 22:18:22,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 22:18:22,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 22:18:22,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 22:18:22,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 22:18:22,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 22:18:22,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 22:18:22,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 22:18:22,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 22:18:22,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 22:18:22,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 22:18:22,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 22:18:22,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 22:18:22,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 22:18:22,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 22:18:22,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 22:18:22,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 22:18:22,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 22:18:22,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 22:18:22,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 22:18:22,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 22:18:22,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 22:18:22,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 22:18:22,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 22:18:22,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 22:18:22,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 22:18:22,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 22:18:22,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 22:18:22,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 22:18:22,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 22:18:22,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-10-02 22:18:22,903 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 22:18:22,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 22:18:22,905 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 22:18:22,905 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 22:18:22,905 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 22:18:22,906 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 22:18:22,906 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 22:18:22,906 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 22:18:22,906 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 22:18:22,906 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 22:18:22,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 22:18:22,909 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 22:18:22,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 22:18:22,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 22:18:22,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 22:18:22,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 22:18:22,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 22:18:22,910 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 22:18:22,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 22:18:22,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 22:18:22,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 22:18:22,911 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 22:18:22,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 22:18:22,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 22:18:22,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 22:18:22,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 22:18:22,912 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 22:18:22,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 22:18:22,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 22:18:22,912 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 22:18:22,960 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 22:18:22,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 22:18:22,981 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 22:18:22,982 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 22:18:22,985 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 22:18:22,986 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/cart.i [2019-10-02 22:18:23,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73d41db67/a4ddf401822f436ebf06278286181370/FLAG92016c7e6 [2019-10-02 22:18:23,585 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 22:18:23,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-data/cart.i [2019-10-02 22:18:23,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73d41db67/a4ddf401822f436ebf06278286181370/FLAG92016c7e6 [2019-10-02 22:18:23,889 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73d41db67/a4ddf401822f436ebf06278286181370 [2019-10-02 22:18:23,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 22:18:23,899 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 22:18:23,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 22:18:23,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 22:18:23,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 22:18:23,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:18:23" (1/1) ... [2019-10-02 22:18:23,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44274d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:23, skipping insertion in model container [2019-10-02 22:18:23,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:18:23" (1/1) ... [2019-10-02 22:18:23,915 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 22:18:23,964 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 22:18:24,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 22:18:24,375 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 22:18:24,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 22:18:24,493 INFO L192 MainTranslator]: Completed translation [2019-10-02 22:18:24,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:24 WrapperNode [2019-10-02 22:18:24,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 22:18:24,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 22:18:24,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 22:18:24,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 22:18:24,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:24" (1/1) ... [2019-10-02 22:18:24,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:24" (1/1) ... [2019-10-02 22:18:24,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:24" (1/1) ... [2019-10-02 22:18:24,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:24" (1/1) ... [2019-10-02 22:18:24,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:24" (1/1) ... [2019-10-02 22:18:24,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:24" (1/1) ... [2019-10-02 22:18:24,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:24" (1/1) ... [2019-10-02 22:18:24,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 22:18:24,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 22:18:24,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 22:18:24,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 22:18:24,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 22:18:24,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 22:18:24,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 22:18:24,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-02 22:18:24,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-02 22:18:24,667 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 22:18:24,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 22:18:24,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 22:18:24,668 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-02 22:18:24,668 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-02 22:18:24,668 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-02 22:18:24,668 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-02 22:18:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-02 22:18:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-02 22:18:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-02 22:18:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-02 22:18:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-02 22:18:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-02 22:18:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-02 22:18:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-02 22:18:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-02 22:18:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-02 22:18:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-02 22:18:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-02 22:18:24,670 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-02 22:18:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-02 22:18:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-02 22:18:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-02 22:18:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-02 22:18:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-02 22:18:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-02 22:18:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-02 22:18:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-02 22:18:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-02 22:18:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-02 22:18:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-02 22:18:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-02 22:18:24,672 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-02 22:18:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-02 22:18:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-02 22:18:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-02 22:18:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-02 22:18:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-02 22:18:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-02 22:18:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-02 22:18:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-02 22:18:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-02 22:18:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-02 22:18:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-02 22:18:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-02 22:18:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-02 22:18:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-02 22:18:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-02 22:18:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-02 22:18:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-02 22:18:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-02 22:18:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-02 22:18:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-02 22:18:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-02 22:18:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-02 22:18:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-02 22:18:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-02 22:18:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-02 22:18:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-02 22:18:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-02 22:18:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-02 22:18:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-02 22:18:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-02 22:18:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-02 22:18:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-02 22:18:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-02 22:18:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-02 22:18:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-02 22:18:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 22:18:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-02 22:18:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-02 22:18:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-02 22:18:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-02 22:18:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-02 22:18:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-02 22:18:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-02 22:18:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-02 22:18:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-02 22:18:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-02 22:18:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-02 22:18:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-02 22:18:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-02 22:18:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-02 22:18:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-02 22:18:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-02 22:18:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-02 22:18:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-02 22:18:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-02 22:18:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-02 22:18:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-02 22:18:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-02 22:18:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-02 22:18:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-02 22:18:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-02 22:18:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-02 22:18:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-02 22:18:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-02 22:18:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-02 22:18:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-02 22:18:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-02 22:18:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-02 22:18:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-02 22:18:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-02 22:18:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-02 22:18:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-02 22:18:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-02 22:18:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-02 22:18:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-02 22:18:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 22:18:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-02 22:18:24,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 22:18:24,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-02 22:18:24,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 22:18:24,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-02 22:18:24,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 22:18:24,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 22:18:24,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 22:18:25,219 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 22:18:25,219 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-02 22:18:25,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:18:25 BoogieIcfgContainer [2019-10-02 22:18:25,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 22:18:25,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 22:18:25,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 22:18:25,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 22:18:25,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 10:18:23" (1/3) ... [2019-10-02 22:18:25,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e1a5b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:18:25, skipping insertion in model container [2019-10-02 22:18:25,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:24" (2/3) ... [2019-10-02 22:18:25,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e1a5b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:18:25, skipping insertion in model container [2019-10-02 22:18:25,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:18:25" (3/3) ... [2019-10-02 22:18:25,229 INFO L109 eAbstractionObserver]: Analyzing ICFG cart.i [2019-10-02 22:18:25,239 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 22:18:25,247 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 22:18:25,264 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 22:18:25,290 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 22:18:25,291 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 22:18:25,291 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 22:18:25,291 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 22:18:25,292 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 22:18:25,292 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 22:18:25,292 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 22:18:25,293 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 22:18:25,309 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-10-02 22:18:25,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-02 22:18:25,322 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:18:25,322 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:18:25,324 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:18:25,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:18:25,328 INFO L82 PathProgramCache]: Analyzing trace with hash 574680290, now seen corresponding path program 1 times [2019-10-02 22:18:25,330 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:18:25,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:18:25,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:18:25,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:18:25,382 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:18:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:18:25,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:18:25,451 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:18:25,451 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 22:18:25,452 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:18:25,456 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 22:18:25,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 22:18:25,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 22:18:25,471 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-10-02 22:18:25,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:18:25,485 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2019-10-02 22:18:25,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 22:18:25,487 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-10-02 22:18:25,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:18:25,495 INFO L225 Difference]: With dead ends: 25 [2019-10-02 22:18:25,495 INFO L226 Difference]: Without dead ends: 21 [2019-10-02 22:18:25,497 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 22:18:25,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-02 22:18:25,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-02 22:18:25,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-02 22:18:25,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2019-10-02 22:18:25,531 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 13 [2019-10-02 22:18:25,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:18:25,532 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2019-10-02 22:18:25,532 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 22:18:25,532 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2019-10-02 22:18:25,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-02 22:18:25,533 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:18:25,533 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:18:25,534 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:18:25,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:18:25,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1684837750, now seen corresponding path program 1 times [2019-10-02 22:18:25,535 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:18:25,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:18:25,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:18:25,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:18:25,540 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:18:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:18:25,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:18:25,635 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:18:25,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 22:18:25,636 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:18:25,637 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 22:18:25,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 22:18:25,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 22:18:25,638 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand 4 states. [2019-10-02 22:18:25,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:18:25,734 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2019-10-02 22:18:25,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 22:18:25,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-10-02 22:18:25,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:18:25,736 INFO L225 Difference]: With dead ends: 29 [2019-10-02 22:18:25,736 INFO L226 Difference]: Without dead ends: 25 [2019-10-02 22:18:25,737 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-02 22:18:25,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-02 22:18:25,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-02 22:18:25,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-02 22:18:25,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2019-10-02 22:18:25,743 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 14 [2019-10-02 22:18:25,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:18:25,743 INFO L475 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2019-10-02 22:18:25,743 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 22:18:25,743 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2019-10-02 22:18:25,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-02 22:18:25,744 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:18:25,745 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:18:25,745 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:18:25,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:18:25,745 INFO L82 PathProgramCache]: Analyzing trace with hash -448562417, now seen corresponding path program 1 times [2019-10-02 22:18:25,746 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:18:25,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:18:25,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:18:25,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:18:25,751 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:18:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:18:25,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:18:25,850 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:18:25,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 22:18:25,851 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:18:25,851 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 22:18:25,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 22:18:25,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 22:18:25,852 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand 4 states. [2019-10-02 22:18:25,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:18:25,939 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2019-10-02 22:18:25,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 22:18:25,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-10-02 22:18:25,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:18:25,942 INFO L225 Difference]: With dead ends: 34 [2019-10-02 22:18:25,942 INFO L226 Difference]: Without dead ends: 34 [2019-10-02 22:18:25,942 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-02 22:18:25,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-02 22:18:25,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2019-10-02 22:18:25,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-02 22:18:25,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2019-10-02 22:18:25,951 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 17 [2019-10-02 22:18:25,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:18:25,977 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2019-10-02 22:18:25,978 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 22:18:25,978 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2019-10-02 22:18:25,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-02 22:18:25,979 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:18:25,979 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:18:25,979 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:18:25,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:18:25,980 INFO L82 PathProgramCache]: Analyzing trace with hash -453488551, now seen corresponding path program 1 times [2019-10-02 22:18:25,980 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:18:25,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:18:25,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:18:25,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:18:25,990 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:18:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:18:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-02 22:18:26,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:18:26,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 22:18:26,074 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:18:26,075 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 22:18:26,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 22:18:26,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 22:18:26,075 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand 3 states. [2019-10-02 22:18:26,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:18:26,089 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2019-10-02 22:18:26,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 22:18:26,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-10-02 22:18:26,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:18:26,090 INFO L225 Difference]: With dead ends: 31 [2019-10-02 22:18:26,090 INFO L226 Difference]: Without dead ends: 31 [2019-10-02 22:18:26,090 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 22:18:26,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-02 22:18:26,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-10-02 22:18:26,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-02 22:18:26,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2019-10-02 22:18:26,094 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 20 [2019-10-02 22:18:26,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:18:26,094 INFO L475 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2019-10-02 22:18:26,094 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 22:18:26,095 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2019-10-02 22:18:26,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-02 22:18:26,095 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:18:26,096 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:18:26,096 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:18:26,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:18:26,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1321518811, now seen corresponding path program 1 times [2019-10-02 22:18:26,096 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:18:26,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:18:26,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:18:26,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:18:26,100 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:18:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:18:26,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:18:26,388 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 22:18:26,388 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 22:18:26,389 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2019-10-02 22:18:26,391 INFO L207 CegarAbsIntRunner]: [2], [3], [4], [12], [14], [19], [23], [30], [32], [37], [43], [47], [56], [59], [60], [70], [80], [81], [82] [2019-10-02 22:18:26,427 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 22:18:26,428 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 22:18:26,616 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 22:18:26,619 INFO L272 AbstractInterpreter]: Visited 15 different actions 15 times. Never merged. Never widened. Performed 36 root evaluator evaluations with a maximum evaluation depth of 7. Performed 36 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Never found a fixpoint. Largest state had 36 variables. [2019-10-02 22:18:26,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:18:26,624 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 22:18:26,684 INFO L227 lantSequenceWeakener]: Weakened 14 states. On average, predicates are now at 72.96% of their original sizes. [2019-10-02 22:18:26,684 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 22:18:26,707 INFO L420 sIntCurrentIteration]: We unified 19 AI predicates to 19 [2019-10-02 22:18:26,707 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 22:18:26,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 22:18:26,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2019-10-02 22:18:26,708 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:18:26,709 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-02 22:18:26,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-02 22:18:26,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-02 22:18:26,710 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand 7 states. [2019-10-02 22:18:26,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:18:26,763 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-10-02 22:18:26,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-02 22:18:26,763 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2019-10-02 22:18:26,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:18:26,764 INFO L225 Difference]: With dead ends: 11 [2019-10-02 22:18:26,764 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 22:18:26,764 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-02 22:18:26,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 22:18:26,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 22:18:26,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 22:18:26,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 22:18:26,765 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-10-02 22:18:26,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:18:26,765 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 22:18:26,766 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-02 22:18:26,766 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 22:18:26,766 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 22:18:26,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 10:18:26 BoogieIcfgContainer [2019-10-02 22:18:26,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 22:18:26,773 INFO L168 Benchmark]: Toolchain (without parser) took 2872.88 ms. Allocated memory was 131.6 MB in the beginning and 220.2 MB in the end (delta: 88.6 MB). Free memory was 86.2 MB in the beginning and 132.9 MB in the end (delta: -46.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. [2019-10-02 22:18:26,774 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 131.6 MB. Free memory was 105.7 MB in the beginning and 105.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 22:18:26,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 594.92 ms. Allocated memory was 131.6 MB in the beginning and 199.2 MB in the end (delta: 67.6 MB). Free memory was 86.0 MB in the beginning and 164.1 MB in the end (delta: -78.2 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2019-10-02 22:18:26,776 INFO L168 Benchmark]: Boogie Preprocessor took 110.93 ms. Allocated memory is still 199.2 MB. Free memory was 164.1 MB in the beginning and 160.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2019-10-02 22:18:26,777 INFO L168 Benchmark]: RCFGBuilder took 614.55 ms. Allocated memory is still 199.2 MB. Free memory was 160.6 MB in the beginning and 119.0 MB in the end (delta: 41.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. [2019-10-02 22:18:26,778 INFO L168 Benchmark]: TraceAbstraction took 1548.25 ms. Allocated memory was 199.2 MB in the beginning and 220.2 MB in the end (delta: 21.0 MB). Free memory was 118.4 MB in the beginning and 132.9 MB in the end (delta: -14.6 MB). Peak memory consumption was 6.4 MB. Max. memory is 7.1 GB. [2019-10-02 22:18:26,782 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 131.6 MB. Free memory was 105.7 MB in the beginning and 105.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 594.92 ms. Allocated memory was 131.6 MB in the beginning and 199.2 MB in the end (delta: 67.6 MB). Free memory was 86.0 MB in the beginning and 164.1 MB in the end (delta: -78.2 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.93 ms. Allocated memory is still 199.2 MB. Free memory was 164.1 MB in the beginning and 160.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 614.55 ms. Allocated memory is still 199.2 MB. Free memory was 160.6 MB in the beginning and 119.0 MB in the end (delta: 41.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1548.25 ms. Allocated memory was 199.2 MB in the beginning and 220.2 MB in the end (delta: 21.0 MB). Free memory was 118.4 MB in the beginning and 132.9 MB in the end (delta: -14.6 MB). Peak memory consumption was 6.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 585]: 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 5 procedures, 31 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 111 SDtfs, 43 SDslu, 121 SDs, 0 SdLazy, 41 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.8790726817042609 AbsIntWeakeningRatio, 1.1578947368421053 AbsIntAvgWeakeningVarsNumRemoved, 2.6315789473684212 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 3623 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 7/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...