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_remove_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:28:57,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:28:57,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:28:57,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:28:57,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:28:57,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:28:57,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:28:57,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:28:57,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:28:57,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:28:57,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:28:57,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:28:57,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:28:57,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:28:57,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:28:57,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:28:57,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:28:57,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:28:57,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:28:57,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:28:57,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:28:57,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:28:57,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:28:57,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:28:57,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:28:57,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:28:57,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:28:57,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:28:57,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:28:57,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:28:57,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:28:57,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:28:57,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:28:57,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:28:57,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:28:57,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:28:57,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:28:57,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:28:57,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:28:57,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:28:57,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:28:57,587 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 13:28:57,602 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:28:57,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:28:57,603 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:28:57,603 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:28:57,604 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:28:57,604 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:28:57,604 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:28:57,604 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:28:57,604 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:28:57,605 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:28:57,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:28:57,605 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:28:57,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:28:57,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:28:57,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:28:57,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:28:57,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:28:57,607 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:28:57,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:28:57,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:28:57,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:28:57,607 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:28:57,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:28:57,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:28:57,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:28:57,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:28:57,608 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:28:57,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:28:57,609 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:28:57,609 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:28:57,642 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:28:57,654 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:28:57,657 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:28:57,658 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:28:57,658 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:28:57,659 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_remove_all_reverse.i [2019-09-20 13:28:57,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e16dcdcd5/3ddab18cc827490ba9b29751e2c77b86/FLAGc9c5faecd [2019-09-20 13:28:58,197 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:28:58,199 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2c_remove_all_reverse.i [2019-09-20 13:28:58,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e16dcdcd5/3ddab18cc827490ba9b29751e2c77b86/FLAGc9c5faecd [2019-09-20 13:28:58,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e16dcdcd5/3ddab18cc827490ba9b29751e2c77b86 [2019-09-20 13:28:58,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:28:58,559 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:28:58,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:58,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:28:58,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:28:58,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:58" (1/1) ... [2019-09-20 13:28:58,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac3f257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:58, skipping insertion in model container [2019-09-20 13:28:58,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:58" (1/1) ... [2019-09-20 13:28:58,575 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:28:58,618 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:28:59,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:59,082 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:28:59,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:59,210 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:28:59,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:59 WrapperNode [2019-09-20 13:28:59,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:59,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:28:59,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:28:59,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:28:59,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:59" (1/1) ... [2019-09-20 13:28:59,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:59" (1/1) ... [2019-09-20 13:28:59,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:59" (1/1) ... [2019-09-20 13:28:59,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:59" (1/1) ... [2019-09-20 13:28:59,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:59" (1/1) ... [2019-09-20 13:28:59,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:59" (1/1) ... [2019-09-20 13:28:59,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:59" (1/1) ... [2019-09-20 13:28:59,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:28:59,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:28:59,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:28:59,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:28:59,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:59" (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 13:28:59,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:28:59,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:28:59,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-20 13:28:59,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-20 13:28:59,332 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-20 13:28:59,332 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-20 13:28:59,333 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2019-09-20 13:28:59,333 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_remove_last [2019-09-20 13:28:59,333 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:28:59,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:28:59,333 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-20 13:28:59,333 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-20 13:28:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-20 13:28:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-20 13:28:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-20 13:28:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-20 13:28:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-20 13:28:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-20 13:28:59,335 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-20 13:28:59,335 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-20 13:28:59,335 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-20 13:28:59,335 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-20 13:28:59,335 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-20 13:28:59,335 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-20 13:28:59,336 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-20 13:28:59,336 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-20 13:28:59,336 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-20 13:28:59,336 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-20 13:28:59,336 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-20 13:28:59,336 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-20 13:28:59,337 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-20 13:28:59,337 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-20 13:28:59,337 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-20 13:28:59,337 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-20 13:28:59,337 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-20 13:28:59,337 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-20 13:28:59,337 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-20 13:28:59,338 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-20 13:28:59,338 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-20 13:28:59,338 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-20 13:28:59,338 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-20 13:28:59,338 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-20 13:28:59,338 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-20 13:28:59,339 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-20 13:28:59,339 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-20 13:28:59,339 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-20 13:28:59,339 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-20 13:28:59,339 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-20 13:28:59,339 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-20 13:28:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-20 13:28:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-20 13:28:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-20 13:28:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-20 13:28:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-20 13:28:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-20 13:28:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-20 13:28:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-20 13:28:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-20 13:28:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-20 13:28:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-20 13:28:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-20 13:28:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-20 13:28:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:28:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-20 13:28:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-20 13:28:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:28:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-20 13:28:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-20 13:28:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-20 13:28:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-20 13:28:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-20 13:28:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-20 13:28:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-20 13:28:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-20 13:28:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-20 13:28:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-20 13:28:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-20 13:28:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-20 13:28:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-20 13:28:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-20 13:28:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-20 13:28:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-20 13:28:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-20 13:28:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-20 13:28:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-20 13:28:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-20 13:28:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-20 13:28:59,346 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-20 13:28:59,346 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-20 13:28:59,346 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-20 13:28:59,346 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-20 13:28:59,346 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-20 13:28:59,346 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-20 13:28:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-20 13:28:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-20 13:28:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-20 13:28:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-20 13:28:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-20 13:28:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-20 13:28:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-20 13:28:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-20 13:28:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-20 13:28:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-20 13:28:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-20 13:28:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-20 13:28:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-20 13:28:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-20 13:28:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-20 13:28:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-20 13:28:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-20 13:28:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-20 13:28:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-20 13:28:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-20 13:28:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-20 13:28:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-20 13:28:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-20 13:28:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-20 13:28:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:28:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:28:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:28:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2019-09-20 13:28:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_remove_last [2019-09-20 13:28:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:28:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:28:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:28:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:28:59,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-20 13:28:59,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:28:59,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:28:59,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:28:59,818 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-20 13:28:59,909 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:28:59,910 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-20 13:28:59,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:59 BoogieIcfgContainer [2019-09-20 13:28:59,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:28:59,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:28:59,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:28:59,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:28:59,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:28:58" (1/3) ... [2019-09-20 13:28:59,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb0dc27 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 13:28:59,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:59" (2/3) ... [2019-09-20 13:28:59,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb0dc27 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 13:28:59,917 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 13:28:59,919 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_remove_all_reverse.i [2019-09-20 13:28:59,928 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:28:59,937 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:28:59,956 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:28:59,979 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:28:59,980 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:28:59,980 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:28:59,980 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:28:59,980 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:28:59,980 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:28:59,981 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:28:59,981 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:28:59,992 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-09-20 13:29:00,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-20 13:29:00,002 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:00,002 INFO L407 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] [2019-09-20 13:29:00,004 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:00,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:00,008 INFO L82 PathProgramCache]: Analyzing trace with hash -2117582365, now seen corresponding path program 1 times [2019-09-20 13:29:00,010 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:00,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:00,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:00,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:00,074 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:00,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:00,199 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:00,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:29:00,199 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:00,204 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:00,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:00,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:00,219 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2019-09-20 13:29:00,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:00,236 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-09-20 13:29:00,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:00,237 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2019-09-20 13:29:00,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:00,246 INFO L225 Difference]: With dead ends: 42 [2019-09-20 13:29:00,246 INFO L226 Difference]: Without dead ends: 35 [2019-09-20 13:29:00,248 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 13:29:00,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-20 13:29:00,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-09-20 13:29:00,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-09-20 13:29:00,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2019-09-20 13:29:00,291 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 24 [2019-09-20 13:29:00,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:00,293 INFO L475 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2019-09-20 13:29:00,293 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:00,294 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2019-09-20 13:29:00,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-20 13:29:00,295 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:00,296 INFO L407 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] [2019-09-20 13:29:00,296 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:00,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:00,297 INFO L82 PathProgramCache]: Analyzing trace with hash -95510826, now seen corresponding path program 1 times [2019-09-20 13:29:00,297 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:00,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:00,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:00,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:00,302 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:00,448 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:00,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:29:00,448 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:00,450 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:29:00,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:29:00,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:29:00,451 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2019-09-20 13:29:00,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:00,533 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2019-09-20 13:29:00,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:29:00,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-09-20 13:29:00,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:00,535 INFO L225 Difference]: With dead ends: 43 [2019-09-20 13:29:00,535 INFO L226 Difference]: Without dead ends: 40 [2019-09-20 13:29:00,536 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 13:29:00,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-20 13:29:00,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2019-09-20 13:29:00,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-20 13:29:00,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-09-20 13:29:00,542 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 24 [2019-09-20 13:29:00,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:00,543 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-09-20 13:29:00,543 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:29:00,543 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-09-20 13:29:00,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-09-20 13:29:00,544 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:00,544 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] [2019-09-20 13:29:00,545 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:00,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:00,545 INFO L82 PathProgramCache]: Analyzing trace with hash -152003766, now seen corresponding path program 1 times [2019-09-20 13:29:00,545 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:00,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:00,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:00,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:00,549 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:00,705 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-20 13:29:00,705 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:00,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:29:00,705 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:00,706 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:29:00,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:29:00,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:29:00,707 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 4 states. [2019-09-20 13:29:00,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:00,732 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2019-09-20 13:29:00,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:29:00,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2019-09-20 13:29:00,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:00,734 INFO L225 Difference]: With dead ends: 39 [2019-09-20 13:29:00,734 INFO L226 Difference]: Without dead ends: 39 [2019-09-20 13:29:00,734 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:29:00,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-09-20 13:29:00,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2019-09-20 13:29:00,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-09-20 13:29:00,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2019-09-20 13:29:00,740 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 34 [2019-09-20 13:29:00,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:00,740 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-09-20 13:29:00,740 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:29:00,741 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2019-09-20 13:29:00,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-09-20 13:29:00,742 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:00,742 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, 1, 1, 1, 1, 1] [2019-09-20 13:29:00,742 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:00,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:00,743 INFO L82 PathProgramCache]: Analyzing trace with hash 733701937, now seen corresponding path program 1 times [2019-09-20 13:29:00,743 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:00,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:00,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:00,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:00,747 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:00,875 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-20 13:29:00,876 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:00,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:29:00,876 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:00,877 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:29:00,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:29:00,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:29:00,879 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2019-09-20 13:29:01,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:01,032 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2019-09-20 13:29:01,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:29:01,032 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2019-09-20 13:29:01,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:01,036 INFO L225 Difference]: With dead ends: 46 [2019-09-20 13:29:01,036 INFO L226 Difference]: Without dead ends: 44 [2019-09-20 13:29:01,037 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:29:01,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-09-20 13:29:01,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2019-09-20 13:29:01,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-20 13:29:01,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2019-09-20 13:29:01,049 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 41 [2019-09-20 13:29:01,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:01,050 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2019-09-20 13:29:01,050 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:29:01,050 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2019-09-20 13:29:01,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-09-20 13:29:01,052 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:01,052 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, 1, 1, 1, 1, 1] [2019-09-20 13:29:01,053 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:01,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:01,053 INFO L82 PathProgramCache]: Analyzing trace with hash -75644689, now seen corresponding path program 1 times [2019-09-20 13:29:01,054 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:01,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:01,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:01,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:01,057 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:01,218 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-20 13:29:01,219 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:29:01,219 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:29:01,220 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 42 with the following transitions: [2019-09-20 13:29:01,228 INFO L207 CegarAbsIntRunner]: [0], [2], [9], [11], [13], [16], [20], [24], [25], [33], [39], [41], [42], [43], [44], [45], [47], [53], [55], [58], [62], [65], [68], [71], [76], [78], [84], [85], [86], [87], [90], [91], [92], [93], [94], [95], [96] [2019-09-20 13:29:01,276 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:29:01,276 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:29:01,335 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:29:01,337 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 26 variables. [2019-09-20 13:29:01,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:01,341 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:29:01,377 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-20 13:29:01,378 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:29:01,380 INFO L420 sIntCurrentIteration]: We unified 40 AI predicates to 40 [2019-09-20 13:29:01,380 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:29:01,381 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:29:01,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2019-09-20 13:29:01,381 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:01,382 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:01,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:01,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:01,382 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 2 states. [2019-09-20 13:29:01,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:01,383 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-20 13:29:01,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:01,383 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 41 [2019-09-20 13:29:01,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:01,384 INFO L225 Difference]: With dead ends: 6 [2019-09-20 13:29:01,384 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:29:01,384 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 40 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 13:29:01,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:29:01,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:29:01,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:29:01,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:29:01,385 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2019-09-20 13:29:01,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:01,386 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:29:01,386 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:01,386 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:29:01,386 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:29:01,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:29:01 BoogieIcfgContainer [2019-09-20 13:29:01,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:29:01,397 INFO L168 Benchmark]: Toolchain (without parser) took 2833.63 ms. Allocated memory was 136.8 MB in the beginning and 222.8 MB in the end (delta: 86.0 MB). Free memory was 85.1 MB in the beginning and 118.3 MB in the end (delta: -33.3 MB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:01,397 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory is still 104.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:29:01,398 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.33 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 84.7 MB in the beginning and 161.3 MB in the end (delta: -76.7 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:01,401 INFO L168 Benchmark]: Boogie Preprocessor took 66.43 ms. Allocated memory is still 199.8 MB. Free memory was 161.3 MB in the beginning and 158.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:01,403 INFO L168 Benchmark]: RCFGBuilder took 632.71 ms. Allocated memory is still 199.8 MB. Free memory was 158.6 MB in the beginning and 111.0 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:01,404 INFO L168 Benchmark]: TraceAbstraction took 1478.83 ms. Allocated memory was 199.8 MB in the beginning and 222.8 MB in the end (delta: 23.1 MB). Free memory was 111.0 MB in the beginning and 118.3 MB in the end (delta: -7.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:01,408 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory is still 104.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 651.33 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 84.7 MB in the beginning and 161.3 MB in the end (delta: -76.7 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.43 ms. Allocated memory is still 199.8 MB. Free memory was 161.3 MB in the beginning and 158.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 632.71 ms. Allocated memory is still 199.8 MB. Free memory was 158.6 MB in the beginning and 111.0 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1478.83 ms. Allocated memory was 199.8 MB in the beginning and 222.8 MB in the end (delta: 23.1 MB). Free memory was 111.0 MB in the beginning and 118.3 MB in the end (delta: -7.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 614]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 49 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 161 SDtfs, 30 SDslu, 247 SDs, 0 SdLazy, 81 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 0.975 AbsIntWeakeningRatio, 1.675 AbsIntAvgWeakeningVarsNumRemoved, 0.15 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 159 ConstructedInterpolants, 0 QuantifiedInterpolants, 10319 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 19/20 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...