java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 22:17:20,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 22:17:20,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 22:17:20,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 22:17:20,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 22:17:20,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 22:17:20,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 22:17:20,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 22:17:20,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 22:17:20,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 22:17:20,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 22:17:20,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 22:17:20,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 22:17:20,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 22:17:20,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 22:17:20,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 22:17:20,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 22:17:20,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 22:17:20,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 22:17:20,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 22:17:20,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 22:17:20,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 22:17:20,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 22:17:20,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 22:17:20,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 22:17:20,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 22:17:20,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 22:17:20,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 22:17:20,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 22:17:20,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 22:17:20,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 22:17:20,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 22:17:20,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 22:17:20,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 22:17:20,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 22:17:20,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 22:17:20,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 22:17:20,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 22:17:20,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 22:17:20,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 22:17:20,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 22:17:20,930 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 22:17:20,945 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 22:17:20,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 22:17:20,946 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 22:17:20,946 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 22:17:20,947 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 22:17:20,947 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 22:17:20,947 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 22:17:20,947 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 22:17:20,948 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 22:17:20,948 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 22:17:20,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 22:17:20,949 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 22:17:20,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 22:17:20,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 22:17:20,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 22:17:20,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 22:17:20,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 22:17:20,950 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 22:17:20,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 22:17:20,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 22:17:20,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 22:17:20,950 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 22:17:20,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 22:17:20,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 22:17:20,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 22:17:20,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 22:17:20,952 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 22:17:20,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 22:17:20,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 22:17:20,952 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 22:17:20,980 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 22:17:20,993 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 22:17:20,997 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 22:17:20,998 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 22:17:20,998 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 22:17:20,999 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-2.i [2019-10-02 22:17:21,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6884e4c2/e157578bed344c32bd4c9e46c4f737d3/FLAG2070453c7 [2019-10-02 22:17:21,692 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 22:17:21,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-2.i [2019-10-02 22:17:21,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6884e4c2/e157578bed344c32bd4c9e46c4f737d3/FLAG2070453c7 [2019-10-02 22:17:21,922 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6884e4c2/e157578bed344c32bd4c9e46c4f737d3 [2019-10-02 22:17:21,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 22:17:21,937 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 22:17:21,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 22:17:21,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 22:17:21,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 22:17:21,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:17:21" (1/1) ... [2019-10-02 22:17:21,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d73c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:17:21, skipping insertion in model container [2019-10-02 22:17:21,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:17:21" (1/1) ... [2019-10-02 22:17:21,956 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 22:17:22,000 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 22:17:22,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 22:17:22,466 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 22:17:22,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 22:17:22,574 INFO L192 MainTranslator]: Completed translation [2019-10-02 22:17:22,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:17:22 WrapperNode [2019-10-02 22:17:22,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 22:17:22,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 22:17:22,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 22:17:22,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 22:17:22,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:17:22" (1/1) ... [2019-10-02 22:17:22,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:17:22" (1/1) ... [2019-10-02 22:17:22,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:17:22" (1/1) ... [2019-10-02 22:17:22,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:17:22" (1/1) ... [2019-10-02 22:17:22,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:17:22" (1/1) ... [2019-10-02 22:17:22,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:17:22" (1/1) ... [2019-10-02 22:17:22,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:17:22" (1/1) ... [2019-10-02 22:17:22,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 22:17:22,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 22:17:22,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 22:17:22,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 22:17:22,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:17:22" (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 22:17:22,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 22:17:22,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 22:17:22,701 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 22:17:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-02 22:17:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-02 22:17:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-02 22:17:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-02 22:17:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-02 22:17:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-02 22:17:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-02 22:17:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-02 22:17:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-02 22:17:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-02 22:17:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-02 22:17:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-02 22:17:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-02 22:17:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-02 22:17:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-02 22:17:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-02 22:17:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-02 22:17:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-02 22:17:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-02 22:17:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-02 22:17:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-02 22:17:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-02 22:17:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-02 22:17:22,705 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-02 22:17:22,705 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-02 22:17:22,705 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-02 22:17:22,705 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-02 22:17:22,705 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-02 22:17:22,705 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-02 22:17:22,706 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-02 22:17:22,706 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-02 22:17:22,706 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-02 22:17:22,706 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-02 22:17:22,706 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-02 22:17:22,706 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-02 22:17:22,706 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-02 22:17:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-02 22:17:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-02 22:17:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-02 22:17:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-02 22:17:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-02 22:17:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-02 22:17:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-02 22:17:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-02 22:17:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-02 22:17:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-02 22:17:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-02 22:17:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-02 22:17:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-02 22:17:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-02 22:17:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-02 22:17:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-02 22:17:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-02 22:17:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-02 22:17:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-02 22:17:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-02 22:17:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-02 22:17:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-02 22:17:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-02 22:17:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-02 22:17:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-02 22:17:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-02 22:17:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-02 22:17:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 22:17:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-02 22:17:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-02 22:17:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-02 22:17:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-02 22:17:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-02 22:17:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-02 22:17:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-02 22:17:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-02 22:17:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-02 22:17:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-02 22:17:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-02 22:17:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-02 22:17:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-02 22:17:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-02 22:17:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-02 22:17:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-02 22:17:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-02 22:17:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-02 22:17:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-02 22:17:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-02 22:17:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-02 22:17:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-02 22:17:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-02 22:17:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-02 22:17:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-02 22:17:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-02 22:17:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-02 22:17:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-02 22:17:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-02 22:17:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-02 22:17:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-02 22:17:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-02 22:17:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-02 22:17:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-02 22:17:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-02 22:17:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-02 22:17:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-02 22:17:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-02 22:17:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-02 22:17:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 22:17:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 22:17:22,718 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 22:17:22,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-02 22:17:22,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-02 22:17:22,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 22:17:22,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-02 22:17:22,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 22:17:22,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 22:17:22,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 22:17:22,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 22:17:23,313 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 22:17:23,314 INFO L283 CfgBuilder]: Removed 17 assume(true) statements. [2019-10-02 22:17:23,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:17:23 BoogieIcfgContainer [2019-10-02 22:17:23,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 22:17:23,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 22:17:23,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 22:17:23,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 22:17:23,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 10:17:21" (1/3) ... [2019-10-02 22:17:23,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2d4c58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:17:23, skipping insertion in model container [2019-10-02 22:17:23,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:17:22" (2/3) ... [2019-10-02 22:17:23,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2d4c58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:17:23, skipping insertion in model container [2019-10-02 22:17:23,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:17:23" (3/3) ... [2019-10-02 22:17:23,323 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-2.i [2019-10-02 22:17:23,333 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 22:17:23,344 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-10-02 22:17:23,363 INFO L252 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-10-02 22:17:23,387 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 22:17:23,387 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 22:17:23,387 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 22:17:23,387 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 22:17:23,388 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 22:17:23,388 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 22:17:23,388 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 22:17:23,388 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 22:17:23,405 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2019-10-02 22:17:23,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-02 22:17:23,415 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:17:23,416 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:17:23,419 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:17:23,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:17:23,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1142059254, now seen corresponding path program 1 times [2019-10-02 22:17:23,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:17:23,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:23,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:17:23,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:23,501 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:17:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:17:23,668 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 22:17:23,670 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:17:23,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 22:17:23,671 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:17:23,676 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 22:17:23,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 22:17:23,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 22:17:23,689 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2019-10-02 22:17:23,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:17:23,707 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2019-10-02 22:17:23,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 22:17:23,709 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-02 22:17:23,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:17:23,719 INFO L225 Difference]: With dead ends: 48 [2019-10-02 22:17:23,719 INFO L226 Difference]: Without dead ends: 41 [2019-10-02 22:17:23,721 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 22:17:23,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-02 22:17:23,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-10-02 22:17:23,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-02 22:17:23,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2019-10-02 22:17:23,767 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 10 [2019-10-02 22:17:23,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:17:23,768 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2019-10-02 22:17:23,768 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 22:17:23,768 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2019-10-02 22:17:23,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-02 22:17:23,769 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:17:23,769 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:17:23,770 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:17:23,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:17:23,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1106993022, now seen corresponding path program 1 times [2019-10-02 22:17:23,772 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:17:23,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:23,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:17:23,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:23,782 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:17:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:17:23,879 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 22:17:23,880 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:17:23,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 22:17:23,881 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:17:23,882 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 22:17:23,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 22:17:23,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 22:17:23,883 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 4 states. [2019-10-02 22:17:24,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:17:24,009 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2019-10-02 22:17:24,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 22:17:24,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-02 22:17:24,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:17:24,011 INFO L225 Difference]: With dead ends: 43 [2019-10-02 22:17:24,011 INFO L226 Difference]: Without dead ends: 43 [2019-10-02 22:17:24,012 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 22:17:24,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-02 22:17:24,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2019-10-02 22:17:24,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-02 22:17:24,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2019-10-02 22:17:24,018 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 11 [2019-10-02 22:17:24,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:17:24,019 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2019-10-02 22:17:24,019 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 22:17:24,019 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2019-10-02 22:17:24,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-02 22:17:24,020 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:17:24,020 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:17:24,020 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:17:24,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:17:24,021 INFO L82 PathProgramCache]: Analyzing trace with hash 43014417, now seen corresponding path program 1 times [2019-10-02 22:17:24,021 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:17:24,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:24,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:17:24,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:24,026 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:17:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:17:24,104 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 22:17:24,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:17:24,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 22:17:24,107 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:17:24,108 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 22:17:24,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 22:17:24,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 22:17:24,108 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 4 states. [2019-10-02 22:17:24,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:17:24,172 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2019-10-02 22:17:24,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 22:17:24,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-10-02 22:17:24,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:17:24,174 INFO L225 Difference]: With dead ends: 37 [2019-10-02 22:17:24,174 INFO L226 Difference]: Without dead ends: 37 [2019-10-02 22:17:24,174 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 22:17:24,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-02 22:17:24,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-10-02 22:17:24,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-02 22:17:24,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2019-10-02 22:17:24,179 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 12 [2019-10-02 22:17:24,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:17:24,179 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2019-10-02 22:17:24,179 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 22:17:24,180 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2019-10-02 22:17:24,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-02 22:17:24,180 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:17:24,180 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:17:24,181 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:17:24,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:17:24,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1331731053, now seen corresponding path program 1 times [2019-10-02 22:17:24,181 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:17:24,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:24,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:17:24,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:24,186 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:17:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:17:24,375 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 22:17:24,375 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:17:24,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 22:17:24,376 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:17:24,376 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 22:17:24,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 22:17:24,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-02 22:17:24,377 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 6 states. [2019-10-02 22:17:24,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:17:24,628 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2019-10-02 22:17:24,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 22:17:24,628 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-10-02 22:17:24,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:17:24,630 INFO L225 Difference]: With dead ends: 69 [2019-10-02 22:17:24,630 INFO L226 Difference]: Without dead ends: 69 [2019-10-02 22:17:24,630 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-10-02 22:17:24,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-10-02 22:17:24,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 50. [2019-10-02 22:17:24,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-10-02 22:17:24,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2019-10-02 22:17:24,637 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 13 [2019-10-02 22:17:24,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:17:24,637 INFO L475 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2019-10-02 22:17:24,637 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 22:17:24,638 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2019-10-02 22:17:24,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-02 22:17:24,638 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:17:24,638 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:17:24,639 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:17:24,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:17:24,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1612684260, now seen corresponding path program 1 times [2019-10-02 22:17:24,640 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:17:24,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:24,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:17:24,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:24,644 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:17:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:17:24,708 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 22:17:24,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:17:24,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 22:17:24,709 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:17:24,709 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 22:17:24,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 22:17:24,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 22:17:24,710 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 4 states. [2019-10-02 22:17:24,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:17:24,815 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2019-10-02 22:17:24,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 22:17:24,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-10-02 22:17:24,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:17:24,817 INFO L225 Difference]: With dead ends: 48 [2019-10-02 22:17:24,817 INFO L226 Difference]: Without dead ends: 48 [2019-10-02 22:17:24,817 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 22:17:24,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-02 22:17:24,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-10-02 22:17:24,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-10-02 22:17:24,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2019-10-02 22:17:24,822 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 14 [2019-10-02 22:17:24,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:17:24,822 INFO L475 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2019-10-02 22:17:24,823 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 22:17:24,823 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2019-10-02 22:17:24,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-02 22:17:24,824 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:17:24,824 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:17:24,824 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:17:24,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:17:24,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1546404077, now seen corresponding path program 1 times [2019-10-02 22:17:24,825 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:17:24,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:24,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:17:24,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:24,829 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:17:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:17:24,899 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 22:17:24,900 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:17:24,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 22:17:24,900 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:17:24,901 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 22:17:24,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 22:17:24,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 22:17:24,902 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 4 states. [2019-10-02 22:17:24,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:17:24,977 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2019-10-02 22:17:24,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 22:17:24,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-10-02 22:17:24,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:17:24,979 INFO L225 Difference]: With dead ends: 46 [2019-10-02 22:17:24,980 INFO L226 Difference]: Without dead ends: 46 [2019-10-02 22:17:24,981 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 22:17:24,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-02 22:17:24,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2019-10-02 22:17:24,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-10-02 22:17:24,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2019-10-02 22:17:24,987 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 15 [2019-10-02 22:17:24,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:17:24,989 INFO L475 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2019-10-02 22:17:24,989 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 22:17:24,989 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2019-10-02 22:17:24,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 22:17:24,990 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:17:24,990 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:17:24,991 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:17:24,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:17:24,991 INFO L82 PathProgramCache]: Analyzing trace with hash 994068577, now seen corresponding path program 1 times [2019-10-02 22:17:24,991 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:17:24,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:24,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:17:24,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:24,999 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:17:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:17:25,102 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 22:17:25,103 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:17:25,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 22:17:25,103 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:17:25,103 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 22:17:25,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 22:17:25,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 22:17:25,104 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 5 states. [2019-10-02 22:17:25,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:17:25,220 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2019-10-02 22:17:25,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 22:17:25,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-10-02 22:17:25,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:17:25,222 INFO L225 Difference]: With dead ends: 48 [2019-10-02 22:17:25,222 INFO L226 Difference]: Without dead ends: 48 [2019-10-02 22:17:25,223 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-02 22:17:25,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-02 22:17:25,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2019-10-02 22:17:25,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-10-02 22:17:25,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2019-10-02 22:17:25,227 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 16 [2019-10-02 22:17:25,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:17:25,228 INFO L475 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2019-10-02 22:17:25,228 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 22:17:25,228 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2019-10-02 22:17:25,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-02 22:17:25,229 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:17:25,229 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:17:25,230 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:17:25,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:17:25,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1616602368, now seen corresponding path program 1 times [2019-10-02 22:17:25,231 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:17:25,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:25,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:17:25,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:25,239 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:17:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:17:25,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:17:25,330 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:17:25,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 22:17:25,331 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:17:25,331 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 22:17:25,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 22:17:25,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 22:17:25,333 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 5 states. [2019-10-02 22:17:25,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:17:25,484 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2019-10-02 22:17:25,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-02 22:17:25,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-10-02 22:17:25,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:17:25,486 INFO L225 Difference]: With dead ends: 55 [2019-10-02 22:17:25,486 INFO L226 Difference]: Without dead ends: 47 [2019-10-02 22:17:25,486 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-02 22:17:25,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-10-02 22:17:25,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-10-02 22:17:25,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-10-02 22:17:25,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2019-10-02 22:17:25,490 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 19 [2019-10-02 22:17:25,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:17:25,490 INFO L475 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2019-10-02 22:17:25,491 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 22:17:25,491 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2019-10-02 22:17:25,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-02 22:17:25,492 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:17:25,492 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:17:25,492 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:17:25,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:17:25,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1003967312, now seen corresponding path program 1 times [2019-10-02 22:17:25,493 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:17:25,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:25,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:17:25,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:17:25,497 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:17:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:17:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:17:25,772 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 22:17:25,772 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 22:17:25,773 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 22 with the following transitions: [2019-10-02 22:17:25,775 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [7], [10], [12], [17], [21], [28], [39], [46], [75], [85], [96], [99], [100], [195], [211], [218], [219], [220] [2019-10-02 22:17:25,812 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 22:17:25,813 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 22:17:25,881 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 22:17:25,883 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 19 root evaluator evaluations with a maximum evaluation depth of 0. Performed 19 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 46 variables. [2019-10-02 22:17:25,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:17:25,887 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 22:17:25,919 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-02 22:17:25,920 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 22:17:25,921 INFO L420 sIntCurrentIteration]: We unified 20 AI predicates to 20 [2019-10-02 22:17:25,921 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 22:17:25,922 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 22:17:25,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2019-10-02 22:17:25,922 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:17:25,923 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 22:17:25,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 22:17:25,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 22:17:25,923 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 2 states. [2019-10-02 22:17:25,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:17:25,924 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-02 22:17:25,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 22:17:25,924 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2019-10-02 22:17:25,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:17:25,924 INFO L225 Difference]: With dead ends: 6 [2019-10-02 22:17:25,925 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 22:17:25,925 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 22:17:25,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 22:17:25,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 22:17:25,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 22:17:25,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 22:17:25,926 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2019-10-02 22:17:25,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:17:25,926 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 22:17:25,926 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 22:17:25,926 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 22:17:25,927 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 22:17:25,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 10:17:25 BoogieIcfgContainer [2019-10-02 22:17:25,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 22:17:25,935 INFO L168 Benchmark]: Toolchain (without parser) took 3996.95 ms. Allocated memory was 141.6 MB in the beginning and 258.5 MB in the end (delta: 116.9 MB). Free memory was 87.5 MB in the beginning and 151.0 MB in the end (delta: -63.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 7.1 GB. [2019-10-02 22:17:25,936 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 107.5 MB in the beginning and 107.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 22:17:25,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.50 ms. Allocated memory was 141.6 MB in the beginning and 201.3 MB in the end (delta: 59.8 MB). Free memory was 87.3 MB in the beginning and 166.3 MB in the end (delta: -79.0 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2019-10-02 22:17:25,938 INFO L168 Benchmark]: Boogie Preprocessor took 68.19 ms. Allocated memory is still 201.3 MB. Free memory was 166.3 MB in the beginning and 163.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2019-10-02 22:17:25,938 INFO L168 Benchmark]: RCFGBuilder took 671.38 ms. Allocated memory is still 201.3 MB. Free memory was 163.4 MB in the beginning and 110.4 MB in the end (delta: 53.0 MB). Peak memory consumption was 53.0 MB. Max. memory is 7.1 GB. [2019-10-02 22:17:25,939 INFO L168 Benchmark]: TraceAbstraction took 2615.55 ms. Allocated memory was 201.3 MB in the beginning and 258.5 MB in the end (delta: 57.1 MB). Free memory was 109.8 MB in the beginning and 151.0 MB in the end (delta: -41.2 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-10-02 22:17:25,943 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 141.6 MB. Free memory was 107.5 MB in the beginning and 107.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 635.50 ms. Allocated memory was 141.6 MB in the beginning and 201.3 MB in the end (delta: 59.8 MB). Free memory was 87.3 MB in the beginning and 166.3 MB in the end (delta: -79.0 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.19 ms. Allocated memory is still 201.3 MB. Free memory was 166.3 MB in the beginning and 163.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 671.38 ms. Allocated memory is still 201.3 MB. Free memory was 163.4 MB in the beginning and 110.4 MB in the end (delta: 53.0 MB). Peak memory consumption was 53.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2615.55 ms. Allocated memory was 201.3 MB in the beginning and 258.5 MB in the end (delta: 57.1 MB). Free memory was 109.8 MB in the beginning and 151.0 MB in the end (delta: -41.2 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1038]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1030]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1039]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1046]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1029]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1045]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1031]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 52 locations, 7 error locations. SAFE Result, 2.5s OverallTime, 9 OverallIterations, 1 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 251 SDtfs, 162 SDslu, 302 SDs, 0 SdLazy, 322 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred 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, 0.875 AbsIntWeakeningRatio, 1.5 AbsIntAvgWeakeningVarsNumRemoved, 0.3 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 11118 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...