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/sll2c_append_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:29:02,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:29:02,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:29:02,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:29:02,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:29:02,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:29:02,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:29:02,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:29:02,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:29:02,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:29:02,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:29:02,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:29:02,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:29:02,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:29:02,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:29:02,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:29:02,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:29:02,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:29:02,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:29:02,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:29:02,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:29:02,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:29:02,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:29:02,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:29:02,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:29:02,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:29:02,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:29:02,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:29:02,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:29:02,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:29:02,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:29:02,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:29:02,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:29:02,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:29:02,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:29:02,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:29:02,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:29:02,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:29:02,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:29:02,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:29:02,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:29:02,390 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 13:29:02,411 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:29:02,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:29:02,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:29:02,412 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:29:02,413 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:29:02,413 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:29:02,413 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:29:02,414 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:29:02,414 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:29:02,414 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:29:02,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:29:02,416 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:29:02,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:29:02,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:29:02,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:29:02,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:29:02,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:29:02,418 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:29:02,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:29:02,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:29:02,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:29:02,419 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:29:02,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:29:02,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:29:02,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:29:02,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:29:02,420 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:29:02,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:29:02,420 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:29:02,420 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:29:02,473 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:29:02,494 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:29:02,497 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:29:02,498 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:29:02,499 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:29:02,500 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_append_equal.i [2019-09-20 13:29:02,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7a188029/34d85c16607f4cda8ef84da3b91b2d26/FLAGf781938f0 [2019-09-20 13:29:03,139 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:29:03,140 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_append_equal.i [2019-09-20 13:29:03,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7a188029/34d85c16607f4cda8ef84da3b91b2d26/FLAGf781938f0 [2019-09-20 13:29:03,409 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7a188029/34d85c16607f4cda8ef84da3b91b2d26 [2019-09-20 13:29:03,420 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:29:03,421 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:29:03,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:29:03,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:29:03,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:29:03,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:29:03" (1/1) ... [2019-09-20 13:29:03,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d257c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:03, skipping insertion in model container [2019-09-20 13:29:03,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:29:03" (1/1) ... [2019-09-20 13:29:03,438 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:29:03,491 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:29:03,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:29:03,977 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:29:04,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:29:04,096 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:29:04,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:04 WrapperNode [2019-09-20 13:29:04,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:29:04,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:29:04,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:29:04,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:29:04,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:04" (1/1) ... [2019-09-20 13:29:04,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:04" (1/1) ... [2019-09-20 13:29:04,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:04" (1/1) ... [2019-09-20 13:29:04,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:04" (1/1) ... [2019-09-20 13:29:04,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:04" (1/1) ... [2019-09-20 13:29:04,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:04" (1/1) ... [2019-09-20 13:29:04,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:04" (1/1) ... [2019-09-20 13:29:04,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:29:04,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:29:04,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:29:04,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:29:04,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:04" (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 13:29:04,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:29:04,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:29:04,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-20 13:29:04,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-20 13:29:04,236 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-20 13:29:04,236 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-20 13:29:04,236 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-09-20 13:29:04,236 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2019-09-20 13:29:04,236 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_append [2019-09-20 13:29:04,236 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:29:04,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:29:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-20 13:29:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-20 13:29:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-20 13:29:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-20 13:29:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-20 13:29:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-20 13:29:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-20 13:29:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-20 13:29:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-20 13:29:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-20 13:29:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-20 13:29:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-20 13:29:04,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-20 13:29:04,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-20 13:29:04,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-20 13:29:04,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-20 13:29:04,239 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-20 13:29:04,242 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-20 13:29:04,242 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-20 13:29:04,242 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-20 13:29:04,242 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-20 13:29:04,242 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-20 13:29:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-20 13:29:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-20 13:29:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-20 13:29:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-20 13:29:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-20 13:29:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-20 13:29:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-20 13:29:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-20 13:29:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-20 13:29:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-20 13:29:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-20 13:29:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-20 13:29:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-20 13:29:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-20 13:29:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-20 13:29:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-20 13:29:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-20 13:29:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-20 13:29:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-20 13:29:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-20 13:29:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-20 13:29:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-20 13:29:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-20 13:29:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-20 13:29:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-20 13:29:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-20 13:29:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-20 13:29:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-20 13:29:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-20 13:29:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-20 13:29:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:29:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-20 13:29:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-20 13:29:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:29:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-20 13:29:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-20 13:29:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-20 13:29:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-20 13:29:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-20 13:29:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-20 13:29:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-20 13:29:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-20 13:29:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-20 13:29:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-20 13:29:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-20 13:29:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-20 13:29:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-20 13:29:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-20 13:29:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-20 13:29:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-20 13:29:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-20 13:29:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-20 13:29:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-20 13:29:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-20 13:29:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-20 13:29:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-20 13:29:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-20 13:29:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-20 13:29:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-20 13:29:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-20 13:29:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-20 13:29:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-20 13:29:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-20 13:29:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-20 13:29:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-20 13:29:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-20 13:29:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-20 13:29:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-20 13:29:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-20 13:29:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-20 13:29:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-20 13:29:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-20 13:29:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-20 13:29:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-20 13:29:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-20 13:29:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-20 13:29:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-20 13:29:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-20 13:29:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-20 13:29:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-20 13:29:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-20 13:29:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-20 13:29:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-20 13:29:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-20 13:29:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-20 13:29:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:29:04,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:29:04,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:29:04,258 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-09-20 13:29:04,258 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2019-09-20 13:29:04,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:29:04,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:29:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_append [2019-09-20 13:29:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:29:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:29:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-20 13:29:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:29:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:29:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:29:04,644 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-20 13:29:04,856 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:29:04,856 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-20 13:29:04,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:04 BoogieIcfgContainer [2019-09-20 13:29:04,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:29:04,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:29:04,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:29:04,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:29:04,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:29:03" (1/3) ... [2019-09-20 13:29:04,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631677cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:04, skipping insertion in model container [2019-09-20 13:29:04,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:04" (2/3) ... [2019-09-20 13:29:04,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631677cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:04, skipping insertion in model container [2019-09-20 13:29:04,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:04" (3/3) ... [2019-09-20 13:29:04,866 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_append_equal.i [2019-09-20 13:29:04,875 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:29:04,883 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:29:04,900 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:29:04,923 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:29:04,923 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:29:04,923 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:29:04,924 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:29:04,924 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:29:04,924 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:29:04,924 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:29:04,925 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:29:04,942 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2019-09-20 13:29:04,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-09-20 13:29:04,953 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:04,954 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 13:29:04,957 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:04,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:04,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1841107940, now seen corresponding path program 1 times [2019-09-20 13:29:04,965 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:05,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:05,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:05,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:05,028 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:05,171 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 13:29:05,174 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:05,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:29:05,175 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:05,185 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:05,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:05,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:05,205 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2019-09-20 13:29:05,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:05,225 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2019-09-20 13:29:05,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:05,227 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2019-09-20 13:29:05,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:05,237 INFO L225 Difference]: With dead ends: 55 [2019-09-20 13:29:05,237 INFO L226 Difference]: Without dead ends: 40 [2019-09-20 13:29:05,239 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 13:29:05,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-20 13:29:05,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-09-20 13:29:05,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-20 13:29:05,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2019-09-20 13:29:05,285 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 36 [2019-09-20 13:29:05,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:05,287 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2019-09-20 13:29:05,288 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:05,288 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2019-09-20 13:29:05,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-09-20 13:29:05,290 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:05,290 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 13:29:05,291 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:05,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:05,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1185739959, now seen corresponding path program 1 times [2019-09-20 13:29:05,292 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:05,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:05,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:05,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:05,297 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:05,498 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 13:29:05,499 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:05,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:29:05,499 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:05,501 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:29:05,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:29:05,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:29:05,502 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 5 states. [2019-09-20 13:29:05,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:05,571 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2019-09-20 13:29:05,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:29:05,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2019-09-20 13:29:05,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:05,574 INFO L225 Difference]: With dead ends: 46 [2019-09-20 13:29:05,574 INFO L226 Difference]: Without dead ends: 43 [2019-09-20 13:29:05,575 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 13:29:05,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-09-20 13:29:05,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2019-09-20 13:29:05,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-09-20 13:29:05,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2019-09-20 13:29:05,583 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 36 [2019-09-20 13:29:05,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:05,583 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2019-09-20 13:29:05,583 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:29:05,583 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2019-09-20 13:29:05,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-09-20 13:29:05,585 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:05,585 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] [2019-09-20 13:29:05,585 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:05,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:05,586 INFO L82 PathProgramCache]: Analyzing trace with hash -532989777, now seen corresponding path program 1 times [2019-09-20 13:29:05,586 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:05,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:05,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:05,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:05,591 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:06,085 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:29:06,085 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:29:06,085 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:29:06,086 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 45 with the following transitions: [2019-09-20 13:29:06,088 INFO L207 CegarAbsIntRunner]: [7], [13], [15], [16], [17], [19], [22], [40], [41], [42], [43], [45], [47], [51], [54], [74], [100], [102], [109], [111], [113], [117], [118], [124], [125], [126], [127], [128], [129], [132], [133], [134], [135], [136], [137], [138] [2019-09-20 13:29:06,142 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:29:06,143 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:29:06,244 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:29:06,246 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 13:29:06,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:06,250 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:29:06,316 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-20 13:29:06,316 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:29:06,322 INFO L420 sIntCurrentIteration]: We unified 43 AI predicates to 43 [2019-09-20 13:29:06,322 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:29:06,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:29:06,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [17] total 17 [2019-09-20 13:29:06,324 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:06,326 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:06,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:06,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:06,326 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 2 states. [2019-09-20 13:29:06,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:06,332 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-20 13:29:06,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:06,332 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 44 [2019-09-20 13:29:06,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:06,333 INFO L225 Difference]: With dead ends: 6 [2019-09-20 13:29:06,333 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:29:06,337 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 43 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 13:29:06,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:29:06,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:29:06,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:29:06,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:29:06,338 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2019-09-20 13:29:06,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:06,338 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:29:06,338 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:06,339 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:29:06,339 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:29:06,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:29:06 BoogieIcfgContainer [2019-09-20 13:29:06,347 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:29:06,350 INFO L168 Benchmark]: Toolchain (without parser) took 2928.33 ms. Allocated memory was 131.6 MB in the beginning and 219.7 MB in the end (delta: 88.1 MB). Free memory was 86.1 MB in the beginning and 116.2 MB in the end (delta: -30.2 MB). Peak memory consumption was 57.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:06,352 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 131.6 MB. Free memory was 105.8 MB in the beginning and 105.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:29:06,354 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.45 ms. Allocated memory was 131.6 MB in the beginning and 197.7 MB in the end (delta: 66.1 MB). Free memory was 85.9 MB in the beginning and 158.3 MB in the end (delta: -72.5 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:06,356 INFO L168 Benchmark]: Boogie Preprocessor took 80.28 ms. Allocated memory is still 197.7 MB. Free memory was 158.3 MB in the beginning and 155.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:06,358 INFO L168 Benchmark]: RCFGBuilder took 679.33 ms. Allocated memory is still 197.7 MB. Free memory was 155.2 MB in the beginning and 104.0 MB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:06,359 INFO L168 Benchmark]: TraceAbstraction took 1488.68 ms. Allocated memory was 197.7 MB in the beginning and 219.7 MB in the end (delta: 22.0 MB). Free memory was 103.4 MB in the beginning and 116.2 MB in the end (delta: -12.9 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:06,370 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 131.6 MB. Free memory was 105.8 MB in the beginning and 105.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 675.45 ms. Allocated memory was 131.6 MB in the beginning and 197.7 MB in the end (delta: 66.1 MB). Free memory was 85.9 MB in the beginning and 158.3 MB in the end (delta: -72.5 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 80.28 ms. Allocated memory is still 197.7 MB. Free memory was 158.3 MB in the beginning and 155.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 679.33 ms. Allocated memory is still 197.7 MB. Free memory was 155.2 MB in the beginning and 104.0 MB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1488.68 ms. Allocated memory was 197.7 MB in the beginning and 219.7 MB in the end (delta: 22.0 MB). Free memory was 103.4 MB in the beginning and 116.2 MB in the end (delta: -12.9 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 628]: 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, 62 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 112 SDtfs, 14 SDslu, 109 SDs, 0 SdLazy, 19 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred 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, 0.9767441860465116 AbsIntWeakeningRatio, 1.558139534883721 AbsIntAvgWeakeningVarsNumRemoved, 0.13953488372093023 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 13432 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 22/26 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...