java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/list-simple/dll2c_prepend_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:28:56,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:28:56,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:28:56,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:28:56,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:28:56,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:28:56,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:28:56,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:28:56,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:28:56,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:28:56,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:28:56,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:28:56,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:28:56,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:28:56,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:28:56,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:28:56,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:28:56,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:28:56,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:28:56,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:28:56,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:28:56,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:28:56,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:28:56,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:28:56,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:28:56,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:28:56,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:28:56,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:28:56,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:28:56,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:28:56,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:28:56,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:28:56,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:28:56,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:28:56,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:28:56,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:28:56,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:28:56,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:28:56,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:28:56,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:28:56,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:28:56,487 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:28:56,513 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:28:56,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:28:56,514 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:28:56,514 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:28:56,515 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:28:56,515 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:28:56,515 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:28:56,516 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:28:56,516 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:28:56,516 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:28:56,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:28:56,519 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:28:56,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:28:56,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:28:56,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:28:56,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:28:56,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:28:56,520 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:28:56,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:28:56,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:28:56,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:28:56,521 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:28:56,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:28:56,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:28:56,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:28:56,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:28:56,522 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:28:56,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:28:56,523 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:28:56,523 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:28:56,580 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:28:56,595 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:28:56,600 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:28:56,602 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:28:56,603 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:28:56,603 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_prepend_equal.i [2019-09-20 13:28:56,673 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ea5bb4b9/bca9a24f1cda4834b1f2d01377c6f3f0/FLAGd6c9eead3 [2019-09-20 13:28:57,235 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:28:57,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2c_prepend_equal.i [2019-09-20 13:28:57,249 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ea5bb4b9/bca9a24f1cda4834b1f2d01377c6f3f0/FLAGd6c9eead3 [2019-09-20 13:28:57,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ea5bb4b9/bca9a24f1cda4834b1f2d01377c6f3f0 [2019-09-20 13:28:57,608 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:28:57,610 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:28:57,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:57,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:28:57,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:28:57,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:57" (1/1) ... [2019-09-20 13:28:57,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52e46397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:57, skipping insertion in model container [2019-09-20 13:28:57,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:57" (1/1) ... [2019-09-20 13:28:57,626 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:28:57,675 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:28:58,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:58,118 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:28:58,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:58,223 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:28:58,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:58 WrapperNode [2019-09-20 13:28:58,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:58,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:28:58,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:28:58,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:28:58,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:58" (1/1) ... [2019-09-20 13:28:58,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:58" (1/1) ... [2019-09-20 13:28:58,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:58" (1/1) ... [2019-09-20 13:28:58,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:58" (1/1) ... [2019-09-20 13:28:58,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:58" (1/1) ... [2019-09-20 13:28:58,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:58" (1/1) ... [2019-09-20 13:28:58,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:58" (1/1) ... [2019-09-20 13:28:58,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:28:58,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:28:58,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:28:58,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:28:58,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:28:58,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:28:58,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:28:58,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-20 13:28:58,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-20 13:28:58,357 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-20 13:28:58,357 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-20 13:28:58,357 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2019-09-20 13:28:58,357 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2019-09-20 13:28:58,358 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_prepend [2019-09-20 13:28:58,358 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:28:58,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:28:58,358 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-20 13:28:58,358 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-20 13:28:58,359 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-20 13:28:58,359 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-20 13:28:58,359 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-20 13:28:58,359 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-20 13:28:58,359 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-20 13:28:58,359 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-20 13:28:58,360 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-20 13:28:58,360 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-20 13:28:58,360 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-20 13:28:58,360 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-20 13:28:58,360 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-20 13:28:58,360 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-20 13:28:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-20 13:28:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-20 13:28:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-20 13:28:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-20 13:28:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-20 13:28:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-20 13:28:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-20 13:28:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-20 13:28:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-20 13:28:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-20 13:28:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-20 13:28:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-20 13:28:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-20 13:28:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-20 13:28:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-20 13:28:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-20 13:28:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-20 13:28:58,364 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-20 13:28:58,364 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-20 13:28:58,364 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-20 13:28:58,364 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-20 13:28:58,364 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-20 13:28:58,364 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-20 13:28:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-20 13:28:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-20 13:28:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-20 13:28:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-20 13:28:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-20 13:28:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-20 13:28:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-20 13:28:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-20 13:28:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-20 13:28:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-20 13:28:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-20 13:28:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-20 13:28:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-20 13:28:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-20 13:28:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-20 13:28:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:28:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-20 13:28:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-20 13:28:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:28:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-20 13:28:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-20 13:28:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-20 13:28:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-20 13:28:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-20 13:28:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-20 13:28:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-20 13:28:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-20 13:28:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-20 13:28:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-20 13:28:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-20 13:28:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-20 13:28:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-20 13:28:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-20 13:28:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-20 13:28:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-20 13:28:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-20 13:28:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-20 13:28:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-20 13:28:58,371 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-20 13:28:58,371 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-20 13:28:58,371 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-20 13:28:58,371 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-20 13:28:58,371 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-20 13:28:58,371 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-20 13:28:58,372 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-20 13:28:58,372 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-20 13:28:58,372 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-20 13:28:58,372 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-20 13:28:58,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-20 13:28:58,372 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-20 13:28:58,373 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-20 13:28:58,373 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-20 13:28:58,373 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-20 13:28:58,373 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-20 13:28:58,373 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-20 13:28:58,373 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-20 13:28:58,373 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-20 13:28:58,374 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-20 13:28:58,374 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-20 13:28:58,374 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-20 13:28:58,374 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-20 13:28:58,374 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-20 13:28:58,374 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-20 13:28:58,374 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-20 13:28:58,374 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-20 13:28:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-20 13:28:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-20 13:28:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-20 13:28:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-20 13:28:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-20 13:28:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:28:58,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:28:58,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:28:58,376 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2019-09-20 13:28:58,376 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2019-09-20 13:28:58,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:28:58,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:28:58,377 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_prepend [2019-09-20 13:28:58,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:28:58,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:28:58,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-20 13:28:58,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:28:58,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:28:58,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:28:58,873 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-20 13:28:59,084 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:28:59,085 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-20 13:28:59,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:59 BoogieIcfgContainer [2019-09-20 13:28:59,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:28:59,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:28:59,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:28:59,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:28:59,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:28:57" (1/3) ... [2019-09-20 13:28:59,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af2a530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:59, skipping insertion in model container [2019-09-20 13:28:59,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:58" (2/3) ... [2019-09-20 13:28:59,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af2a530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:59, skipping insertion in model container [2019-09-20 13:28:59,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:59" (3/3) ... [2019-09-20 13:28:59,096 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_prepend_equal.i [2019-09-20 13:28:59,107 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:28:59,121 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:28:59,135 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:28:59,157 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:28:59,157 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:28:59,158 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:28:59,158 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:28:59,158 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:28:59,158 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:28:59,159 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:28:59,159 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:28:59,176 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-09-20 13:28:59,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-09-20 13:28:59,188 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:59,189 INFO L407 BasicCegarLoop]: trace histogram [2, 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, 1, 1] [2019-09-20 13:28:59,192 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:59,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:59,198 INFO L82 PathProgramCache]: Analyzing trace with hash -301799002, now seen corresponding path program 1 times [2019-09-20 13:28:59,200 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:59,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:59,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:59,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:59,272 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:59,463 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-20 13:28:59,466 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:59,466 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:28:59,467 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:59,472 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:28:59,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:28:59,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:28:59,491 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2019-09-20 13:28:59,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:59,510 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2019-09-20 13:28:59,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:28:59,512 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2019-09-20 13:28:59,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:59,522 INFO L225 Difference]: With dead ends: 54 [2019-09-20 13:28:59,522 INFO L226 Difference]: Without dead ends: 39 [2019-09-20 13:28:59,524 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:28:59,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-09-20 13:28:59,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-09-20 13:28:59,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-20 13:28:59,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2019-09-20 13:28:59,566 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 36 [2019-09-20 13:28:59,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:59,568 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2019-09-20 13:28:59,568 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:28:59,569 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2019-09-20 13:28:59,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-09-20 13:28:59,571 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:59,571 INFO L407 BasicCegarLoop]: trace histogram [2, 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, 1, 1] [2019-09-20 13:28:59,571 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:59,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:59,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1245592506, now seen corresponding path program 1 times [2019-09-20 13:28:59,572 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:59,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:59,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:59,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:59,597 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:59,766 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-20 13:28:59,767 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:59,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:28:59,767 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:59,769 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:28:59,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:28:59,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:28:59,770 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 5 states. [2019-09-20 13:28:59,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:59,839 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2019-09-20 13:28:59,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:28:59,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2019-09-20 13:28:59,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:59,841 INFO L225 Difference]: With dead ends: 47 [2019-09-20 13:28:59,841 INFO L226 Difference]: Without dead ends: 44 [2019-09-20 13:28:59,842 INFO L636 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 [2019-09-20 13:28:59,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-09-20 13:28:59,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2019-09-20 13:28:59,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-20 13:28:59,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2019-09-20 13:28:59,851 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 36 [2019-09-20 13:28:59,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:59,851 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2019-09-20 13:28:59,851 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:28:59,852 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2019-09-20 13:28:59,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-20 13:28:59,853 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:59,853 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:59,854 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:59,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:59,854 INFO L82 PathProgramCache]: Analyzing trace with hash -2128308850, now seen corresponding path program 1 times [2019-09-20 13:28:59,854 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:59,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:59,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:59,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:59,859 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:01,728 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-20 13:29:02,103 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-20 13:29:02,422 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:02,422 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:29:02,423 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:29:02,424 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 47 with the following transitions: [2019-09-20 13:29:02,426 INFO L207 CegarAbsIntRunner]: [0], [2], [9], [11], [13], [16], [20], [24], [25], [33], [39], [41], [42], [43], [44], [45], [47], [49], [53], [56], [76], [105], [107], [112], [114], [115], [116], [117], [118], [121], [122], [123], [124], [127], [128], [129], [131], [132] [2019-09-20 13:29:02,466 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:29:02,466 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:29:02,521 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:29:02,523 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 0. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 28 variables. [2019-09-20 13:29:02,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:02,528 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:29:02,567 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-20 13:29:02,567 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:29:02,570 INFO L420 sIntCurrentIteration]: We unified 45 AI predicates to 45 [2019-09-20 13:29:02,570 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:29:02,571 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:29:02,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [26] total 26 [2019-09-20 13:29:02,572 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:02,572 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:02,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:02,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:02,573 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 2 states. [2019-09-20 13:29:02,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:02,574 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-20 13:29:02,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:02,574 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-09-20 13:29:02,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:02,574 INFO L225 Difference]: With dead ends: 6 [2019-09-20 13:29:02,575 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:29:02,575 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:02,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:29:02,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:29:02,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:29:02,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:29:02,576 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2019-09-20 13:29:02,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:02,576 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:29:02,576 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:02,577 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:29:02,577 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:29:02,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:29:02 BoogieIcfgContainer [2019-09-20 13:29:02,582 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:29:02,584 INFO L168 Benchmark]: Toolchain (without parser) took 4973.99 ms. Allocated memory was 133.7 MB in the beginning and 262.1 MB in the end (delta: 128.5 MB). Free memory was 87.9 MB in the beginning and 198.2 MB in the end (delta: -110.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:02,585 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 133.7 MB. Free memory was 108.0 MB in the beginning and 107.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:29:02,587 INFO L168 Benchmark]: CACSL2BoogieTranslator took 613.05 ms. Allocated memory was 133.7 MB in the beginning and 200.3 MB in the end (delta: 66.6 MB). Free memory was 87.7 MB in the beginning and 160.5 MB in the end (delta: -72.8 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:02,587 INFO L168 Benchmark]: Boogie Preprocessor took 69.15 ms. Allocated memory is still 200.3 MB. Free memory was 160.5 MB in the beginning and 157.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:02,588 INFO L168 Benchmark]: RCFGBuilder took 792.71 ms. Allocated memory is still 200.3 MB. Free memory was 157.4 MB in the beginning and 105.2 MB in the end (delta: 52.2 MB). Peak memory consumption was 52.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:02,589 INFO L168 Benchmark]: TraceAbstraction took 3494.53 ms. Allocated memory was 200.3 MB in the beginning and 262.1 MB in the end (delta: 61.9 MB). Free memory was 104.6 MB in the beginning and 198.2 MB in the end (delta: -93.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:29:02,593 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 133.7 MB. Free memory was 108.0 MB in the beginning and 107.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 613.05 ms. Allocated memory was 133.7 MB in the beginning and 200.3 MB in the end (delta: 66.6 MB). Free memory was 87.7 MB in the beginning and 160.5 MB in the end (delta: -72.8 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.15 ms. Allocated memory is still 200.3 MB. Free memory was 160.5 MB in the beginning and 157.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 792.71 ms. Allocated memory is still 200.3 MB. Free memory was 157.4 MB in the beginning and 105.2 MB in the end (delta: 52.2 MB). Peak memory consumption was 52.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3494.53 ms. Allocated memory was 200.3 MB in the beginning and 262.1 MB in the end (delta: 61.9 MB). Free memory was 104.6 MB in the beginning and 198.2 MB in the end (delta: -93.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 636]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 61 locations, 1 error locations. SAFE Result, 3.4s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 110 SDtfs, 17 SDslu, 106 SDs, 0 SdLazy, 19 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9777777777777777 AbsIntWeakeningRatio, 1.7555555555555555 AbsIntAvgWeakeningVarsNumRemoved, 0.13333333333333333 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 59100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 17/26 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...