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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/list-simple/dll2n_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 02:59:29,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 02:59:29,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 02:59:29,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 02:59:29,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 02:59:29,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 02:59:29,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 02:59:29,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 02:59:29,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 02:59:29,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 02:59:29,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 02:59:29,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 02:59:29,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 02:59:29,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 02:59:29,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 02:59:29,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 02:59:29,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 02:59:29,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 02:59:29,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 02:59:29,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 02:59:29,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 02:59:29,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 02:59:29,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 02:59:29,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 02:59:29,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 02:59:29,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 02:59:29,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 02:59:29,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 02:59:29,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 02:59:29,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 02:59:29,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 02:59:29,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 02:59:29,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 02:59:29,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 02:59:29,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 02:59:29,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 02:59:29,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 02:59:29,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 02:59:29,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 02:59:29,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 02:59:29,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 02:59:29,219 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 [2019-10-15 02:59:29,233 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 02:59:29,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 02:59:29,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 02:59:29,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 02:59:29,235 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 02:59:29,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 02:59:29,235 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 02:59:29,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 02:59:29,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 02:59:29,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 02:59:29,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 02:59:29,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 02:59:29,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 02:59:29,237 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 02:59:29,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 02:59:29,237 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 02:59:29,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 02:59:29,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 02:59:29,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 02:59:29,238 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 02:59:29,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 02:59:29,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:59:29,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 02:59:29,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 02:59:29,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 02:59:29,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 02:59:29,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 02:59:29,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 02:59:29,240 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 02:59:29,507 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 02:59:29,521 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 02:59:29,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 02:59:29,526 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 02:59:29,526 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 02:59:29,527 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_append_unequal.i [2019-10-15 02:59:29,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fdf5f994/de0495eb6f91420f84409266cfc67bf5/FLAG53d40c13d [2019-10-15 02:59:30,163 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 02:59:30,163 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_append_unequal.i [2019-10-15 02:59:30,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fdf5f994/de0495eb6f91420f84409266cfc67bf5/FLAG53d40c13d [2019-10-15 02:59:30,459 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fdf5f994/de0495eb6f91420f84409266cfc67bf5 [2019-10-15 02:59:30,469 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 02:59:30,471 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 02:59:30,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 02:59:30,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 02:59:30,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 02:59:30,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:59:30" (1/1) ... [2019-10-15 02:59:30,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@931e348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:30, skipping insertion in model container [2019-10-15 02:59:30,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:59:30" (1/1) ... [2019-10-15 02:59:30,488 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 02:59:30,538 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 02:59:31,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:59:31,042 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 02:59:31,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:59:31,182 INFO L192 MainTranslator]: Completed translation [2019-10-15 02:59:31,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:31 WrapperNode [2019-10-15 02:59:31,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 02:59:31,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 02:59:31,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 02:59:31,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 02:59:31,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:31" (1/1) ... [2019-10-15 02:59:31,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:31" (1/1) ... [2019-10-15 02:59:31,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:31" (1/1) ... [2019-10-15 02:59:31,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:31" (1/1) ... [2019-10-15 02:59:31,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:31" (1/1) ... [2019-10-15 02:59:31,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:31" (1/1) ... [2019-10-15 02:59:31,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:31" (1/1) ... [2019-10-15 02:59:31,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 02:59:31,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 02:59:31,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 02:59:31,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 02:59:31,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:31" (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 [2019-10-15 02:59:31,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 02:59:31,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 02:59:31,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 02:59:31,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 02:59:31,325 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-15 02:59:31,325 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-15 02:59:31,325 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2019-10-15 02:59:31,325 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2019-10-15 02:59:31,326 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_append [2019-10-15 02:59:31,326 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 02:59:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 02:59:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 02:59:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 02:59:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 02:59:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 02:59:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 02:59:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 02:59:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 02:59:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 02:59:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 02:59:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 02:59:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 02:59:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 02:59:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 02:59:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 02:59:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 02:59:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 02:59:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 02:59:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 02:59:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 02:59:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 02:59:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 02:59:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 02:59:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 02:59:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 02:59:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 02:59:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 02:59:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 02:59:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 02:59:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 02:59:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 02:59:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 02:59:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 02:59:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 02:59:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 02:59:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 02:59:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 02:59:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 02:59:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 02:59:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 02:59:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 02:59:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 02:59:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 02:59:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 02:59:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 02:59:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 02:59:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 02:59:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 02:59:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 02:59:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 02:59:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 02:59:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 02:59:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 02:59:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 02:59:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 02:59:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 02:59:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 02:59:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 02:59:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 02:59:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 02:59:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 02:59:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 02:59:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 02:59:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 02:59:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 02:59:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 02:59:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 02:59:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 02:59:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 02:59:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 02:59:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 02:59:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 02:59:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 02:59:31,338 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 02:59:31,338 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 02:59:31,338 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 02:59:31,338 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 02:59:31,338 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 02:59:31,338 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 02:59:31,338 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 02:59:31,339 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 02:59:31,339 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 02:59:31,339 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 02:59:31,339 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 02:59:31,339 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 02:59:31,339 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 02:59:31,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 02:59:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 02:59:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 02:59:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 02:59:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 02:59:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 02:59:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 02:59:31,341 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 02:59:31,341 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 02:59:31,341 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 02:59:31,341 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 02:59:31,341 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 02:59:31,341 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 02:59:31,341 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 02:59:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 02:59:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 02:59:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 02:59:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 02:59:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 02:59:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 02:59:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-15 02:59:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-15 02:59:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 02:59:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 02:59:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 02:59:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2019-10-15 02:59:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2019-10-15 02:59:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 02:59:31,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 02:59:31,344 INFO L130 BoogieDeclarations]: Found specification of procedure dll_append [2019-10-15 02:59:31,344 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 02:59:31,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 02:59:31,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 02:59:31,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 02:59:31,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 02:59:31,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 02:59:31,803 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-15 02:59:32,082 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 02:59:32,082 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 02:59:32,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:59:32 BoogieIcfgContainer [2019-10-15 02:59:32,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 02:59:32,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 02:59:32,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 02:59:32,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 02:59:32,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:59:30" (1/3) ... [2019-10-15 02:59:32,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fcb627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:59:32, skipping insertion in model container [2019-10-15 02:59:32,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:31" (2/3) ... [2019-10-15 02:59:32,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fcb627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:59:32, skipping insertion in model container [2019-10-15 02:59:32,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:59:32" (3/3) ... [2019-10-15 02:59:32,093 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_append_unequal.i [2019-10-15 02:59:32,103 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 02:59:32,111 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 02:59:32,122 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 02:59:32,146 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 02:59:32,147 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 02:59:32,147 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 02:59:32,147 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 02:59:32,147 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 02:59:32,147 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 02:59:32,147 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 02:59:32,148 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 02:59:32,162 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2019-10-15 02:59:32,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-15 02:59:32,169 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:59:32,170 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, 1, 1, 1, 1] [2019-10-15 02:59:32,172 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:59:32,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:59:32,179 INFO L82 PathProgramCache]: Analyzing trace with hash -128202669, now seen corresponding path program 1 times [2019-10-15 02:59:32,188 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:59:32,189 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606613578] [2019-10-15 02:59:32,189 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:32,189 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:32,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:59:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:59:32,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:59:32,484 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606613578] [2019-10-15 02:59:32,485 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:59:32,486 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 02:59:32,486 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577648980] [2019-10-15 02:59:32,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 02:59:32,491 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:59:32,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 02:59:32,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:59:32,508 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 5 states. [2019-10-15 02:59:32,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:59:32,606 INFO L93 Difference]: Finished difference Result 89 states and 114 transitions. [2019-10-15 02:59:32,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 02:59:32,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-15 02:59:32,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:59:32,616 INFO L225 Difference]: With dead ends: 89 [2019-10-15 02:59:32,616 INFO L226 Difference]: Without dead ends: 39 [2019-10-15 02:59:32,619 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 [2019-10-15 02:59:32,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-15 02:59:32,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2019-10-15 02:59:32,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-15 02:59:32,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2019-10-15 02:59:32,661 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 25 [2019-10-15 02:59:32,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:59:32,661 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2019-10-15 02:59:32,661 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 02:59:32,661 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2019-10-15 02:59:32,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-15 02:59:32,664 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:59:32,664 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:59:32,664 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:59:32,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:59:32,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1714121939, now seen corresponding path program 1 times [2019-10-15 02:59:32,665 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:59:32,665 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205899177] [2019-10-15 02:59:32,666 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:32,666 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:32,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:59:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:59:32,839 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 02:59:32,840 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205899177] [2019-10-15 02:59:32,840 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113210464] [2019-10-15 02:59:32,843 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 [2019-10-15 02:59:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:59:33,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 02:59:33,013 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:59:33,054 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:59:33,055 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:59:33,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 02:59:33,209 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [627842216] [2019-10-15 02:59:33,253 INFO L162 IcfgInterpreter]: Started Sifa with 28 locations of interest [2019-10-15 02:59:33,253 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 02:59:33,260 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 02:59:33,268 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 02:59:33,269 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 02:59:33,430 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-15 02:59:33,644 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:36,194 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:44,071 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:46,023 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2019-10-15 02:59:46,041 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2019-10-15 02:59:46,654 INFO L199 IcfgInterpreter]: Interpreting procedure dll_append with input of size 39 for LOIs [2019-10-15 02:59:47,464 INFO L199 IcfgInterpreter]: Interpreting procedure dll_create with input of size 44 for LOIs