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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/list-ext3-properties/dll_circular_traversal-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:04:19,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:04:19,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:04:19,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:04:19,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:04:19,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:04:19,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:04:19,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:04:19,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:04:19,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:04:19,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:04:20,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:04:20,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:04:20,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:04:20,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:04:20,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:04:20,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:04:20,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:04:20,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:04:20,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:04:20,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:04:20,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:04:20,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:04:20,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:04:20,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:04:20,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:04:20,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:04:20,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:04:20,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:04:20,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:04:20,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:04:20,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:04:20,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:04:20,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:04:20,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:04:20,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:04:20,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:04:20,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:04:20,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:04:20,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:04:20,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:04:20,041 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:04:20,060 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:04:20,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:04:20,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:04:20,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:04:20,065 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:04:20,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:04:20,065 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:04:20,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:04:20,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:04:20,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:04:20,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:04:20,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:04:20,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:04:20,068 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:04:20,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:04:20,068 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:04:20,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:04:20,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:04:20,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:04:20,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:04:20,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:04:20,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:04:20,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:04:20,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:04:20,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:04:20,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:04:20,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:04:20,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:04:20,071 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:04:20,353 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:04:20,380 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:04:20,383 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:04:20,385 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:04:20,385 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:04:20,386 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/dll_circular_traversal-2.i [2019-10-13 21:04:20,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1bd664c5/7240069c00034e6899b451fc5b035a02/FLAG18d483ed6 [2019-10-13 21:04:21,011 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:04:21,012 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/dll_circular_traversal-2.i [2019-10-13 21:04:21,029 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1bd664c5/7240069c00034e6899b451fc5b035a02/FLAG18d483ed6 [2019-10-13 21:04:21,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1bd664c5/7240069c00034e6899b451fc5b035a02 [2019-10-13 21:04:21,308 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:04:21,309 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:04:21,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:04:21,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:04:21,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:04:21,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:04:21" (1/1) ... [2019-10-13 21:04:21,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445a6c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:21, skipping insertion in model container [2019-10-13 21:04:21,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:04:21" (1/1) ... [2019-10-13 21:04:21,326 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:04:21,386 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:04:21,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:04:21,894 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:04:21,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:04:22,016 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:04:22,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:22 WrapperNode [2019-10-13 21:04:22,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:04:22,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:04:22,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:04:22,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:04:22,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:22" (1/1) ... [2019-10-13 21:04:22,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:22" (1/1) ... [2019-10-13 21:04:22,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:22" (1/1) ... [2019-10-13 21:04:22,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:22" (1/1) ... [2019-10-13 21:04:22,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:22" (1/1) ... [2019-10-13 21:04:22,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:22" (1/1) ... [2019-10-13 21:04:22,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:22" (1/1) ... [2019-10-13 21:04:22,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:04:22,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:04:22,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:04:22,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:04:22,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:22" (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 [2019-10-13 21:04:22,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:04:22,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:04:22,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-13 21:04:22,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-13 21:04:22,153 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-13 21:04:22,153 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2019-10-13 21:04:22,153 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:04:22,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:04:22,154 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-13 21:04:22,154 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-13 21:04:22,154 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 21:04:22,154 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 21:04:22,154 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 21:04:22,155 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 21:04:22,155 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 21:04:22,155 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 21:04:22,155 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 21:04:22,155 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 21:04:22,156 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 21:04:22,156 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 21:04:22,156 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 21:04:22,156 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 21:04:22,156 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 21:04:22,156 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 21:04:22,156 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 21:04:22,156 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 21:04:22,156 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 21:04:22,157 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 21:04:22,157 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 21:04:22,157 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 21:04:22,157 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 21:04:22,157 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 21:04:22,157 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 21:04:22,158 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 21:04:22,158 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 21:04:22,158 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 21:04:22,158 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 21:04:22,158 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 21:04:22,158 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 21:04:22,158 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 21:04:22,158 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 21:04:22,159 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 21:04:22,159 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 21:04:22,159 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 21:04:22,159 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 21:04:22,159 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 21:04:22,159 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 21:04:22,159 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 21:04:22,159 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 21:04:22,160 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 21:04:22,160 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 21:04:22,160 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 21:04:22,160 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 21:04:22,160 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 21:04:22,160 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 21:04:22,161 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 21:04:22,161 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 21:04:22,161 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 21:04:22,161 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 21:04:22,161 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 21:04:22,161 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:04:22,161 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 21:04:22,162 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 21:04:22,162 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:04:22,162 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 21:04:22,162 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 21:04:22,162 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 21:04:22,162 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 21:04:22,163 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-13 21:04:22,163 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 21:04:22,163 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 21:04:22,163 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-13 21:04:22,163 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 21:04:22,163 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:04:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-13 21:04:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 21:04:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 21:04:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 21:04:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 21:04:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 21:04:22,165 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 21:04:22,165 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 21:04:22,165 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 21:04:22,165 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 21:04:22,165 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 21:04:22,165 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 21:04:22,166 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 21:04:22,166 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 21:04:22,166 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 21:04:22,166 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 21:04:22,166 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 21:04:22,166 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 21:04:22,166 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 21:04:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 21:04:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 21:04:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 21:04:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 21:04:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 21:04:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 21:04:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 21:04:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 21:04:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 21:04:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 21:04:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 21:04:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 21:04:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 21:04:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 21:04:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 21:04:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 21:04:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 21:04:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 21:04:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 21:04:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 21:04:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-13 21:04:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2019-10-13 21:04:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:04:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:04:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:04:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:04:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:04:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:04:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:04:22,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:04:22,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:04:22,678 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-13 21:04:22,757 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:04:22,759 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 21:04:22,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:04:22 BoogieIcfgContainer [2019-10-13 21:04:22,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:04:22,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:04:22,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:04:22,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:04:22,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:04:21" (1/3) ... [2019-10-13 21:04:22,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60106893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:04:22, skipping insertion in model container [2019-10-13 21:04:22,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:22" (2/3) ... [2019-10-13 21:04:22,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60106893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:04:22, skipping insertion in model container [2019-10-13 21:04:22,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:04:22" (3/3) ... [2019-10-13 21:04:22,775 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_circular_traversal-2.i [2019-10-13 21:04:22,786 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:04:22,795 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:04:22,807 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:04:22,841 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:04:22,842 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:04:22,842 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:04:22,843 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:04:22,843 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:04:22,843 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:04:22,843 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:04:22,844 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:04:22,859 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-10-13 21:04:22,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-13 21:04:22,865 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:04:22,866 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:04:22,868 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:04:22,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:22,873 INFO L82 PathProgramCache]: Analyzing trace with hash -189611821, now seen corresponding path program 1 times [2019-10-13 21:04:22,881 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:04:22,881 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267156007] [2019-10-13 21:04:22,882 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:22,882 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:22,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:04:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:04:23,039 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267156007] [2019-10-13 21:04:23,041 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:04:23,042 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:04:23,042 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776635344] [2019-10-13 21:04:23,052 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:04:23,054 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:23,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:04:23,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:04:23,067 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2019-10-13 21:04:23,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:04:23,088 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-10-13 21:04:23,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:04:23,089 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-10-13 21:04:23,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:04:23,096 INFO L225 Difference]: With dead ends: 53 [2019-10-13 21:04:23,096 INFO L226 Difference]: Without dead ends: 26 [2019-10-13 21:04:23,099 INFO L600 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 [2019-10-13 21:04:23,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-13 21:04:23,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-10-13 21:04:23,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-13 21:04:23,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-10-13 21:04:23,139 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2019-10-13 21:04:23,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:04:23,139 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-10-13 21:04:23,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:04:23,139 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-10-13 21:04:23,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-13 21:04:23,140 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:04:23,141 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:04:23,141 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:04:23,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:23,142 INFO L82 PathProgramCache]: Analyzing trace with hash 371500639, now seen corresponding path program 1 times [2019-10-13 21:04:23,142 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:04:23,142 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319893884] [2019-10-13 21:04:23,142 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:23,143 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:23,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:04:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:23,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:04:23,280 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319893884] [2019-10-13 21:04:23,280 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:04:23,280 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:04:23,281 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313229017] [2019-10-13 21:04:23,286 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:04:23,287 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:23,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:04:23,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:04:23,288 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2019-10-13 21:04:23,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:04:23,378 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2019-10-13 21:04:23,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:04:23,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-10-13 21:04:23,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:04:23,382 INFO L225 Difference]: With dead ends: 42 [2019-10-13 21:04:23,382 INFO L226 Difference]: Without dead ends: 29 [2019-10-13 21:04:23,384 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:04:23,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-13 21:04:23,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-10-13 21:04:23,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-13 21:04:23,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2019-10-13 21:04:23,394 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 18 [2019-10-13 21:04:23,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:04:23,394 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2019-10-13 21:04:23,394 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:04:23,394 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2019-10-13 21:04:23,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-13 21:04:23,396 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:04:23,397 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:04:23,397 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:04:23,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:23,397 INFO L82 PathProgramCache]: Analyzing trace with hash -2036002280, now seen corresponding path program 1 times [2019-10-13 21:04:23,398 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:04:23,398 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236485520] [2019-10-13 21:04:23,398 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:23,398 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:23,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:04:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:23,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:04:23,548 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236485520] [2019-10-13 21:04:23,549 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405656735] [2019-10-13 21:04:23,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:04:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:23,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 21:04:23,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:04:23,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:04:23,736 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:04:23,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:04:23,883 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [365941395] [2019-10-13 21:04:23,889 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 22 [2019-10-13 21:04:23,932 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 21:04:23,932 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 21:04:23,995 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 21:04:23,996 INFO L272 AbstractInterpreter]: Visited 8 different actions 8 times. Never merged. Never widened. Performed 33 root evaluator evaluations with a maximum evaluation depth of 0. Performed 33 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 33 variables. [2019-10-13 21:04:24,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:24,000 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 21:04:24,045 INFO L227 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 88.89% of their original sizes. [2019-10-13 21:04:24,045 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 21:04:24,055 INFO L553 sIntCurrentIteration]: We unified 20 AI predicates to 20 [2019-10-13 21:04:24,055 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 21:04:24,059 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:04:24,059 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6, 6] total 11 [2019-10-13 21:04:24,059 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939135666] [2019-10-13 21:04:24,060 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:04:24,063 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:24,063 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 21:04:24,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:04:24,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:04:24,064 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 4 states. [2019-10-13 21:04:24,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:04:24,067 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-10-13 21:04:24,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:04:24,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2019-10-13 21:04:24,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:04:24,068 INFO L225 Difference]: With dead ends: 27 [2019-10-13 21:04:24,068 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 21:04:24,068 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:04:24,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 21:04:24,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 21:04:24,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 21:04:24,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 21:04:24,069 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2019-10-13 21:04:24,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:04:24,070 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 21:04:24,070 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:04:24,070 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 21:04:24,070 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 21:04:24,273 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:04:24,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 21:04:24,319 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:04:24,319 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:04:24,320 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:04:24,320 INFO L446 ceAbstractionStarter]: At program point myexitENTRY(lines 561 563) the Hoare annotation is: true [2019-10-13 21:04:24,320 INFO L443 ceAbstractionStarter]: For program point myexitEXIT(lines 561 563) no Hoare annotation was computed. [2019-10-13 21:04:24,320 INFO L446 ceAbstractionStarter]: At program point L562(line 562) the Hoare annotation is: true [2019-10-13 21:04:24,320 INFO L443 ceAbstractionStarter]: For program point __bswap_32ENTRY(lines 63 67) no Hoare annotation was computed. [2019-10-13 21:04:24,320 INFO L443 ceAbstractionStarter]: For program point __bswap_32FINAL(lines 63 67) no Hoare annotation was computed. [2019-10-13 21:04:24,320 INFO L443 ceAbstractionStarter]: For program point __bswap_32EXIT(lines 63 67) no Hoare annotation was computed. [2019-10-13 21:04:24,320 INFO L443 ceAbstractionStarter]: For program point __bswap_64ENTRY(lines 68 72) no Hoare annotation was computed. [2019-10-13 21:04:24,321 INFO L443 ceAbstractionStarter]: For program point __bswap_64FINAL(lines 68 72) no Hoare annotation was computed. [2019-10-13 21:04:24,321 INFO L443 ceAbstractionStarter]: For program point __bswap_64EXIT(lines 68 72) no Hoare annotation was computed. [2019-10-13 21:04:24,321 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:04:24,321 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 21:04:24,321 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:04:24,321 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:04:24,321 INFO L443 ceAbstractionStarter]: For program point L607(lines 607 609) no Hoare annotation was computed. [2019-10-13 21:04:24,322 INFO L443 ceAbstractionStarter]: For program point L605-1(lines 605 613) no Hoare annotation was computed. [2019-10-13 21:04:24,322 INFO L439 ceAbstractionStarter]: At program point L605-3(lines 605 613) the Hoare annotation is: false [2019-10-13 21:04:24,322 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 615) no Hoare annotation was computed. [2019-10-13 21:04:24,322 INFO L443 ceAbstractionStarter]: For program point L605-4(lines 605 613) no Hoare annotation was computed. [2019-10-13 21:04:24,322 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 588 617) no Hoare annotation was computed. [2019-10-13 21:04:24,322 INFO L443 ceAbstractionStarter]: For program point L595(lines 595 597) no Hoare annotation was computed. [2019-10-13 21:04:24,323 INFO L439 ceAbstractionStarter]: At program point L591(line 591) the Hoare annotation is: (and (= main_~len~0 5) (= main_~data_init~0 1)) [2019-10-13 21:04:24,323 INFO L443 ceAbstractionStarter]: For program point L591-1(line 591) no Hoare annotation was computed. [2019-10-13 21:04:24,323 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 588 617) no Hoare annotation was computed. [2019-10-13 21:04:24,323 INFO L439 ceAbstractionStarter]: At program point L608(lines 588 617) the Hoare annotation is: false [2019-10-13 21:04:24,323 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 588 617) the Hoare annotation is: true [2019-10-13 21:04:24,323 INFO L443 ceAbstractionStarter]: For program point L594-1(lines 594 601) no Hoare annotation was computed. [2019-10-13 21:04:24,323 INFO L439 ceAbstractionStarter]: At program point L594-3(lines 594 601) the Hoare annotation is: false [2019-10-13 21:04:24,324 INFO L443 ceAbstractionStarter]: For program point L594-4(lines 594 601) no Hoare annotation was computed. [2019-10-13 21:04:24,324 INFO L446 ceAbstractionStarter]: At program point L576(line 576) the Hoare annotation is: true [2019-10-13 21:04:24,324 INFO L443 ceAbstractionStarter]: For program point dll_circular_createEXIT(lines 564 587) no Hoare annotation was computed. [2019-10-13 21:04:24,324 INFO L443 ceAbstractionStarter]: For program point L566(lines 566 568) no Hoare annotation was computed. [2019-10-13 21:04:24,324 INFO L443 ceAbstractionStarter]: For program point L566-1(lines 566 568) no Hoare annotation was computed. [2019-10-13 21:04:24,324 INFO L443 ceAbstractionStarter]: For program point L575(lines 575 577) no Hoare annotation was computed. [2019-10-13 21:04:24,324 INFO L443 ceAbstractionStarter]: For program point L575-1(lines 575 577) no Hoare annotation was computed. [2019-10-13 21:04:24,325 INFO L439 ceAbstractionStarter]: At program point L573-2(lines 573 583) the Hoare annotation is: (or (not (= |dll_circular_create_#in~data| 1)) (not (= |dll_circular_create_#in~len| 5))) [2019-10-13 21:04:24,325 INFO L443 ceAbstractionStarter]: For program point L573-3(lines 573 583) no Hoare annotation was computed. [2019-10-13 21:04:24,325 INFO L446 ceAbstractionStarter]: At program point L567(line 567) the Hoare annotation is: true [2019-10-13 21:04:24,325 INFO L443 ceAbstractionStarter]: For program point dll_circular_createFINAL(lines 564 587) no Hoare annotation was computed. [2019-10-13 21:04:24,325 INFO L446 ceAbstractionStarter]: At program point dll_circular_createENTRY(lines 564 587) the Hoare annotation is: true [2019-10-13 21:04:24,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:04:24 BoogieIcfgContainer [2019-10-13 21:04:24,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 21:04:24,341 INFO L168 Benchmark]: Toolchain (without parser) took 3030.61 ms. Allocated memory was 145.8 MB in the beginning and 235.4 MB in the end (delta: 89.7 MB). Free memory was 102.8 MB in the beginning and 129.2 MB in the end (delta: -26.4 MB). Peak memory consumption was 63.2 MB. Max. memory is 7.1 GB. [2019-10-13 21:04:24,342 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-13 21:04:24,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.01 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 102.6 MB in the beginning and 169.2 MB in the end (delta: -66.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2019-10-13 21:04:24,344 INFO L168 Benchmark]: Boogie Preprocessor took 78.77 ms. Allocated memory is still 202.9 MB. Free memory was 169.2 MB in the beginning and 166.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2019-10-13 21:04:24,345 INFO L168 Benchmark]: RCFGBuilder took 663.96 ms. Allocated memory is still 202.9 MB. Free memory was 166.0 MB in the beginning and 121.3 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. [2019-10-13 21:04:24,346 INFO L168 Benchmark]: TraceAbstraction took 1576.13 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 120.6 MB in the beginning and 129.2 MB in the end (delta: -8.6 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:04:24,350 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 707.01 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 102.6 MB in the beginning and 169.2 MB in the end (delta: -66.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.77 ms. Allocated memory is still 202.9 MB. Free memory was 169.2 MB in the beginning and 166.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 663.96 ms. Allocated memory is still 202.9 MB. Free memory was 166.0 MB in the beginning and 121.3 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1576.13 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 120.6 MB in the beginning and 129.2 MB in the end (delta: -8.6 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 615]: 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 - InvariantResult [Line: 588]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 562]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 605]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 573]: Loop Invariant Derived loop invariant: !(\old(data) == 1) || !(\old(len) == 5) - InvariantResult [Line: 594]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 42 locations, 1 error locations. Result: SAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 17 SDslu, 71 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 16 PreInvPairs, 16 NumberOfFragments, 28 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 3776 SizeOfPredicates, 2 NumberOfNonLiveVariables, 129 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 112, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9083333333333332, AVG_VARS_REMOVED_DURING_WEAKENING: 1.45, AVG_WEAKENED_CONJUNCTS: 0.7, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...