java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/list-ext-properties/list-ext_flag.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:28:53,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:28:53,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:28:53,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:28:53,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:28:53,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:28:53,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:28:53,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:28:53,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:28:53,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:28:53,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:28:53,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:28:53,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:28:53,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:28:53,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:28:53,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:28:53,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:28:53,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:28:53,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:28:53,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:28:53,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:28:53,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:28:53,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:28:53,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:28:53,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:28:53,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:28:53,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:28:53,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:28:53,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:28:53,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:28:53,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:28:53,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:28:53,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:28:53,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:28:53,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:28:53,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:28:53,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:28:53,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:28:53,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:28:53,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:28:53,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:28:53,754 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:28:53,769 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:28:53,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:28:53,770 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:28:53,770 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:28:53,771 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:28:53,771 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:28:53,771 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:28:53,771 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:28:53,772 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:28:53,772 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:28:53,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:28:53,773 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:28:53,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:28:53,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:28:53,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:28:53,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:28:53,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:28:53,774 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:28:53,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:28:53,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:28:53,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:28:53,775 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:28:53,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:28:53,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:28:53,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:28:53,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:28:53,776 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:28:53,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:28:53,776 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:28:53,776 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:28:53,803 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:28:53,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:28:53,819 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:28:53,821 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:28:53,821 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:28:53,822 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/list-ext_flag.i [2019-09-20 13:28:53,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50002fb54/e6ce74f71e8f4e288c3f5273c054b9e9/FLAGc8e322253 [2019-09-20 13:28:54,425 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:28:54,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext-properties/list-ext_flag.i [2019-09-20 13:28:54,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50002fb54/e6ce74f71e8f4e288c3f5273c054b9e9/FLAGc8e322253 [2019-09-20 13:28:54,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50002fb54/e6ce74f71e8f4e288c3f5273c054b9e9 [2019-09-20 13:28:54,702 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:28:54,703 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:28:54,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:54,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:28:54,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:28:54,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:54" (1/1) ... [2019-09-20 13:28:54,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f8ec106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:54, skipping insertion in model container [2019-09-20 13:28:54,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:54" (1/1) ... [2019-09-20 13:28:54,720 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:28:54,769 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:28:55,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:55,254 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:28:55,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:55,365 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:28:55,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:55 WrapperNode [2019-09-20 13:28:55,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:55,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:28:55,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:28:55,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:28:55,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:55" (1/1) ... [2019-09-20 13:28:55,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:55" (1/1) ... [2019-09-20 13:28:55,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:55" (1/1) ... [2019-09-20 13:28:55,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:55" (1/1) ... [2019-09-20 13:28:55,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:55" (1/1) ... [2019-09-20 13:28:55,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:55" (1/1) ... [2019-09-20 13:28:55,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:55" (1/1) ... [2019-09-20 13:28:55,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:28:55,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:28:55,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:28:55,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:28:55,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:28:55,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:28:55,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:28:55,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-20 13:28:55,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-20 13:28:55,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-09-20 13:28:55,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-09-20 13:28:55,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-09-20 13:28:55,514 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-20 13:28:55,514 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:28:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:28:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:28:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-20 13:28:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-20 13:28:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-20 13:28:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-20 13:28:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-20 13:28:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-20 13:28:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-20 13:28:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-20 13:28:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-20 13:28:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-20 13:28:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-20 13:28:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-20 13:28:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-20 13:28:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-20 13:28:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-20 13:28:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-20 13:28:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-20 13:28:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-20 13:28:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-09-20 13:28:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-09-20 13:28:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-09-20 13:28:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-20 13:28:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-20 13:28:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-20 13:28:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-20 13:28:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-20 13:28:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-20 13:28:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-20 13:28:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-20 13:28:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-20 13:28:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-20 13:28:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-20 13:28:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-20 13:28:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-20 13:28:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-20 13:28:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-20 13:28:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-20 13:28:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-20 13:28:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-20 13:28:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-20 13:28:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-20 13:28:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-20 13:28:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-20 13:28:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-20 13:28:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-20 13:28:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-20 13:28:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-20 13:28:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-20 13:28:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-20 13:28:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-20 13:28:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-20 13:28:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-20 13:28:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-20 13:28:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-20 13:28:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-20 13:28:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:28:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-20 13:28:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-20 13:28:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:28:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-20 13:28:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-20 13:28:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-20 13:28:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-20 13:28:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-20 13:28:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-20 13:28:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-20 13:28:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-20 13:28:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-20 13:28:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-20 13:28:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-20 13:28:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-20 13:28:55,527 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-20 13:28:55,527 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-20 13:28:55,527 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-20 13:28:55,527 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-20 13:28:55,527 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-20 13:28:55,527 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-20 13:28:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-20 13:28:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-20 13:28:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-20 13:28:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-20 13:28:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-20 13:28:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-20 13:28:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-20 13:28:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-20 13:28:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-20 13:28:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-20 13:28:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-20 13:28:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-20 13:28:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-20 13:28:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-20 13:28:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-20 13:28:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-20 13:28:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-20 13:28:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-20 13:28:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-20 13:28:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-20 13:28:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-20 13:28:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-20 13:28:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-20 13:28:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-20 13:28:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-20 13:28:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-20 13:28:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-20 13:28:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-20 13:28:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-20 13:28:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-20 13:28:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-20 13:28:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:28:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:28:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:28:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:28:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:28:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:28:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:28:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:28:55,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:28:55,913 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-20 13:28:56,107 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:28:56,107 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-20 13:28:56,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:56 BoogieIcfgContainer [2019-09-20 13:28:56,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:28:56,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:28:56,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:28:56,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:28:56,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:28:54" (1/3) ... [2019-09-20 13:28:56,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57976229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:56, skipping insertion in model container [2019-09-20 13:28:56,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:55" (2/3) ... [2019-09-20 13:28:56,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57976229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:56, skipping insertion in model container [2019-09-20 13:28:56,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:56" (3/3) ... [2019-09-20 13:28:56,117 INFO L109 eAbstractionObserver]: Analyzing ICFG list-ext_flag.i [2019-09-20 13:28:56,127 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:28:56,135 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:28:56,153 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:28:56,181 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:28:56,182 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:28:56,182 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:28:56,183 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:28:56,183 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:28:56,184 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:28:56,184 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:28:56,184 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:28:56,200 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-09-20 13:28:56,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-20 13:28:56,210 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:56,211 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:56,213 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:56,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:56,220 INFO L82 PathProgramCache]: Analyzing trace with hash -10426518, now seen corresponding path program 1 times [2019-09-20 13:28:56,222 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:56,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:56,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:56,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:56,289 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:56,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:56,379 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:56,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:28:56,381 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:56,390 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:28:56,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:28:56,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:28:56,411 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2019-09-20 13:28:56,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:56,438 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2019-09-20 13:28:56,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:28:56,440 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-09-20 13:28:56,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:56,451 INFO L225 Difference]: With dead ends: 37 [2019-09-20 13:28:56,452 INFO L226 Difference]: Without dead ends: 26 [2019-09-20 13:28:56,455 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:28:56,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-20 13:28:56,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-09-20 13:28:56,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-09-20 13:28:56,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-09-20 13:28:56,493 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2019-09-20 13:28:56,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:56,493 INFO L475 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-09-20 13:28:56,494 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:28:56,494 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-09-20 13:28:56,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-20 13:28:56,495 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:56,495 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:56,495 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:56,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:56,496 INFO L82 PathProgramCache]: Analyzing trace with hash -166897896, now seen corresponding path program 1 times [2019-09-20 13:28:56,496 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:56,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:56,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:56,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:56,502 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:56,657 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:56,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:28:56,657 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:56,661 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:28:56,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:28:56,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:28:56,662 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 7 states. [2019-09-20 13:28:56,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:56,766 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2019-09-20 13:28:56,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:28:56,767 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-09-20 13:28:56,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:56,769 INFO L225 Difference]: With dead ends: 40 [2019-09-20 13:28:56,769 INFO L226 Difference]: Without dead ends: 38 [2019-09-20 13:28:56,770 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:28:56,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-09-20 13:28:56,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2019-09-20 13:28:56,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-09-20 13:28:56,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2019-09-20 13:28:56,777 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 17 [2019-09-20 13:28:56,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:56,777 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2019-09-20 13:28:56,777 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:28:56,777 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2019-09-20 13:28:56,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-20 13:28:56,778 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:56,779 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:56,779 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:56,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:56,797 INFO L82 PathProgramCache]: Analyzing trace with hash -166856170, now seen corresponding path program 1 times [2019-09-20 13:28:56,797 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:56,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:56,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:56,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:56,802 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:56,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:56,880 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:56,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:28:56,881 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:56,881 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:28:56,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:28:56,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:28:56,882 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 5 states. [2019-09-20 13:28:56,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:56,979 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2019-09-20 13:28:56,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:28:56,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-09-20 13:28:56,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:56,981 INFO L225 Difference]: With dead ends: 50 [2019-09-20 13:28:56,981 INFO L226 Difference]: Without dead ends: 47 [2019-09-20 13:28:56,982 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:28:56,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-09-20 13:28:56,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 33. [2019-09-20 13:28:56,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-09-20 13:28:56,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2019-09-20 13:28:56,987 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 17 [2019-09-20 13:28:56,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:56,987 INFO L475 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2019-09-20 13:28:56,987 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:28:56,988 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2019-09-20 13:28:56,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-20 13:28:56,988 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:56,989 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:56,989 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:56,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:56,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1985042728, now seen corresponding path program 1 times [2019-09-20 13:28:56,990 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:56,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:56,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:56,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:56,994 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:57,162 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:28:57,163 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:28:57,164 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2019-09-20 13:28:57,165 INFO L207 CegarAbsIntRunner]: [11], [12], [13], [19], [21], [26], [29], [35], [37], [40], [44], [50], [52], [56], [61], [66], [69], [72], [107], [121], [122], [123] [2019-09-20 13:28:57,201 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:28:57,201 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:28:57,280 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:28:57,281 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 37 variables. [2019-09-20 13:28:57,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:57,286 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:28:57,321 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-20 13:28:57,322 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:28:57,323 INFO L420 sIntCurrentIteration]: We unified 23 AI predicates to 23 [2019-09-20 13:28:57,324 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:28:57,324 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:28:57,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-09-20 13:28:57,325 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:57,325 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:28:57,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:28:57,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:28:57,326 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand 2 states. [2019-09-20 13:28:57,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:57,327 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-20 13:28:57,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:28:57,327 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2019-09-20 13:28:57,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:57,327 INFO L225 Difference]: With dead ends: 6 [2019-09-20 13:28:57,328 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:28:57,328 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:28:57,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:28:57,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:28:57,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:28:57,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:28:57,329 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2019-09-20 13:28:57,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:57,329 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:28:57,329 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:28:57,330 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:28:57,330 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:28:57,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:28:57 BoogieIcfgContainer [2019-09-20 13:28:57,335 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:28:57,338 INFO L168 Benchmark]: Toolchain (without parser) took 2633.69 ms. Allocated memory was 131.6 MB in the beginning and 221.2 MB in the end (delta: 89.7 MB). Free memory was 86.9 MB in the beginning and 142.9 MB in the end (delta: -56.0 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:57,339 INFO L168 Benchmark]: CDTParser took 0.24 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. [2019-09-20 13:28:57,340 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.90 ms. Allocated memory was 131.6 MB in the beginning and 199.8 MB in the end (delta: 68.2 MB). Free memory was 86.7 MB in the beginning and 163.5 MB in the end (delta: -76.8 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:57,341 INFO L168 Benchmark]: Boogie Preprocessor took 88.55 ms. Allocated memory is still 199.8 MB. Free memory was 163.5 MB in the beginning and 160.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:57,342 INFO L168 Benchmark]: RCFGBuilder took 648.50 ms. Allocated memory is still 199.8 MB. Free memory was 160.3 MB in the beginning and 114.1 MB in the end (delta: 46.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:57,343 INFO L168 Benchmark]: TraceAbstraction took 1225.51 ms. Allocated memory was 199.8 MB in the beginning and 221.2 MB in the end (delta: 21.5 MB). Free memory was 114.1 MB in the beginning and 142.9 MB in the end (delta: -28.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:28:57,347 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 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 661.90 ms. Allocated memory was 131.6 MB in the beginning and 199.8 MB in the end (delta: 68.2 MB). Free memory was 86.7 MB in the beginning and 163.5 MB in the end (delta: -76.8 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.55 ms. Allocated memory is still 199.8 MB. Free memory was 163.5 MB in the beginning and 160.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 648.50 ms. Allocated memory is still 199.8 MB. Free memory was 160.3 MB in the beginning and 114.1 MB in the end (delta: 46.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1225.51 ms. Allocated memory was 199.8 MB in the beginning and 221.2 MB in the end (delta: 21.5 MB). Free memory was 114.1 MB in the beginning and 142.9 MB in the end (delta: -28.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 563]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 53 locations, 1 error locations. SAFE Result, 1.1s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 98 SDtfs, 46 SDslu, 109 SDs, 0 SdLazy, 79 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 0.9130434782608695 AbsIntWeakeningRatio, 1.2173913043478262 AbsIntAvgWeakeningVarsNumRemoved, 0.2608695652173913 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 6454 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...