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/dll2n_insert_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:30:02,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:30:02,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:30:02,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-03 02:30:02,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-03 02:30:02,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-03 02:30:02,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-03 02:30:02,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-03 02:30:02,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-03 02:30:02,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-03 02:30:02,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-03 02:30:02,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-03 02:30:02,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 02:30:02,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 02:30:02,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 02:30:02,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 02:30:02,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 02:30:02,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 02:30:02,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 02:30:02,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 02:30:02,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 02:30:02,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 02:30:02,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 02:30:02,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 02:30:02,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-03 02:30:02,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-03 02:30:02,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-03 02:30:02,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-03 02:30:02,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-03 02:30:02,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-03 02:30:02,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-03 02:30:02,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-03 02:30:02,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-03 02:30:02,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-03 02:30:02,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-03 02:30:02,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-03 02:30:02,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-03 02:30:02,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-03 02:30:02,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:30:02,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:30:02,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:30:02,577 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 [2019-10-03 02:30:02,603 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:30:02,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:30:02,604 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:30:02,604 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:30:02,605 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:30:02,606 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:30:02,606 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:30:02,606 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:30:02,606 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:30:02,606 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:30:02,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:30:02,608 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:30:02,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:30:02,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:30:02,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:30:02,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:30:02,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:30:02,609 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:30:02,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:30:02,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:30:02,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:30:02,610 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:30:02,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:30:02,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:30:02,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:30:02,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:30:02,611 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:30:02,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:30:02,611 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:30:02,611 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:30:02,656 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:30:02,671 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:30:02,676 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:30:02,678 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:30:02,678 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:30:02,679 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_insert_equal.i [2019-10-03 02:30:02,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c31c86738/2728c559132a4f17b357d69ee70b58f8/FLAG78090b7af [2019-10-03 02:30:03,456 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:30:03,458 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_insert_equal.i [2019-10-03 02:30:03,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c31c86738/2728c559132a4f17b357d69ee70b58f8/FLAG78090b7af [2019-10-03 02:30:03,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c31c86738/2728c559132a4f17b357d69ee70b58f8 [2019-10-03 02:30:03,590 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:30:03,591 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:30:03,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:30:03,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:30:03,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:30:03,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:30:03" (1/1) ... [2019-10-03 02:30:03,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54d9d5b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:03, skipping insertion in model container [2019-10-03 02:30:03,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:30:03" (1/1) ... [2019-10-03 02:30:03,613 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:30:03,662 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:30:04,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:30:04,243 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:30:04,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:30:04,383 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:30:04,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:04 WrapperNode [2019-10-03 02:30:04,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:30:04,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:30:04,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:30:04,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:30:04,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:04" (1/1) ... [2019-10-03 02:30:04,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:04" (1/1) ... [2019-10-03 02:30:04,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:04" (1/1) ... [2019-10-03 02:30:04,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:04" (1/1) ... [2019-10-03 02:30:04,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:04" (1/1) ... [2019-10-03 02:30:04,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:04" (1/1) ... [2019-10-03 02:30:04,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:04" (1/1) ... [2019-10-03 02:30:04,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:30:04,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:30:04,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:30:04,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:30:04,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:04" (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 [2019-10-03 02:30:04,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:30:04,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:30:04,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-03 02:30:04,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-03 02:30:04,573 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-03 02:30:04,574 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-03 02:30:04,574 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2019-10-03 02:30:04,574 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2019-10-03 02:30:04,575 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert [2019-10-03 02:30:04,575 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:30:04,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:30:04,575 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-03 02:30:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-03 02:30:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-03 02:30:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-03 02:30:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-03 02:30:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-03 02:30:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-03 02:30:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-03 02:30:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-03 02:30:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-03 02:30:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-03 02:30:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-03 02:30:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-03 02:30:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-03 02:30:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-03 02:30:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-03 02:30:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-03 02:30:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-03 02:30:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-03 02:30:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-03 02:30:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-03 02:30:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-03 02:30:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-03 02:30:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-03 02:30:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-03 02:30:04,581 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-03 02:30:04,581 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-03 02:30:04,581 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-03 02:30:04,581 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-03 02:30:04,581 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-03 02:30:04,581 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-03 02:30:04,582 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-03 02:30:04,582 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-03 02:30:04,582 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-03 02:30:04,582 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-03 02:30:04,582 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-03 02:30:04,582 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-03 02:30:04,583 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-03 02:30:04,583 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-03 02:30:04,583 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-03 02:30:04,583 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-03 02:30:04,583 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-03 02:30:04,583 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-03 02:30:04,584 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-03 02:30:04,584 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-03 02:30:04,584 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-03 02:30:04,584 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-03 02:30:04,584 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-03 02:30:04,584 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-03 02:30:04,585 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-03 02:30:04,585 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-03 02:30:04,585 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-03 02:30:04,585 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-03 02:30:04,585 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-03 02:30:04,585 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-03 02:30:04,586 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-03 02:30:04,586 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-03 02:30:04,586 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-03 02:30:04,586 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-03 02:30:04,586 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-03 02:30:04,587 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-03 02:30:04,587 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-03 02:30:04,587 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-03 02:30:04,587 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-03 02:30:04,587 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-03 02:30:04,587 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-03 02:30:04,588 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-03 02:30:04,588 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-03 02:30:04,588 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-03 02:30:04,588 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-03 02:30:04,588 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-03 02:30:04,588 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-03 02:30:04,589 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-03 02:30:04,589 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-03 02:30:04,589 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-03 02:30:04,589 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-03 02:30:04,589 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-03 02:30:04,590 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-03 02:30:04,590 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-03 02:30:04,590 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-03 02:30:04,590 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-03 02:30:04,590 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-03 02:30:04,590 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-03 02:30:04,590 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-03 02:30:04,591 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-03 02:30:04,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-03 02:30:04,591 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-03 02:30:04,591 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-03 02:30:04,591 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-03 02:30:04,591 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-03 02:30:04,592 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-03 02:30:04,592 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-03 02:30:04,592 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-03 02:30:04,592 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-03 02:30:04,592 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-03 02:30:04,592 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-03 02:30:04,593 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-03 02:30:04,593 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-03 02:30:04,593 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-03 02:30:04,593 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-03 02:30:04,593 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-03 02:30:04,593 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-03 02:30:04,593 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-03 02:30:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-03 02:30:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-03 02:30:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-03 02:30:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-03 02:30:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-03 02:30:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-03 02:30:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-03 02:30:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2019-10-03 02:30:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2019-10-03 02:30:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-03 02:30:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-03 02:30:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert [2019-10-03 02:30:04,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:30:04,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-03 02:30:04,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-03 02:30:04,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-03 02:30:04,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:30:04,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:30:05,101 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-03 02:30:05,412 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:30:05,413 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-03 02:30:05,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:30:05 BoogieIcfgContainer [2019-10-03 02:30:05,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:30:05,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:30:05,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:30:05,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:30:05,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:30:03" (1/3) ... [2019-10-03 02:30:05,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6aa3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:30:05, skipping insertion in model container [2019-10-03 02:30:05,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:30:04" (2/3) ... [2019-10-03 02:30:05,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6aa3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:30:05, skipping insertion in model container [2019-10-03 02:30:05,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:30:05" (3/3) ... [2019-10-03 02:30:05,445 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_insert_equal.i [2019-10-03 02:30:05,462 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:30:05,479 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:30:05,508 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:30:05,551 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:30:05,551 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:30:05,551 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:30:05,551 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:30:05,552 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:30:05,552 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:30:05,552 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:30:05,552 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:30:05,581 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2019-10-03 02:30:05,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-03 02:30:05,606 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:30:05,608 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:30:05,612 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:30:05,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:30:05,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1788681453, now seen corresponding path program 1 times [2019-10-03 02:30:05,629 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:30:05,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:05,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:30:05,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:05,734 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:30:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:30:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:30:05,990 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:30:05,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-03 02:30:05,991 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:30:06,000 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:30:06,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:30:06,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:30:06,032 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2019-10-03 02:30:06,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:30:06,074 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2019-10-03 02:30:06,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:30:06,077 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2019-10-03 02:30:06,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:30:06,094 INFO L225 Difference]: With dead ends: 53 [2019-10-03 02:30:06,094 INFO L226 Difference]: Without dead ends: 39 [2019-10-03 02:30:06,099 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:30:06,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-03 02:30:06,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-10-03 02:30:06,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-03 02:30:06,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2019-10-03 02:30:06,175 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 31 [2019-10-03 02:30:06,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:30:06,176 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2019-10-03 02:30:06,176 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:30:06,176 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2019-10-03 02:30:06,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-03 02:30:06,179 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:30:06,179 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:30:06,180 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:30:06,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:30:06,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1747123946, now seen corresponding path program 1 times [2019-10-03 02:30:06,182 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:30:06,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:06,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:30:06,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:06,195 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:30:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:30:06,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:30:06,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:30:06,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 02:30:06,455 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:30:06,457 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 02:30:06,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 02:30:06,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:30:06,459 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 3 states. [2019-10-03 02:30:06,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:30:06,489 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2019-10-03 02:30:06,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 02:30:06,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2019-10-03 02:30:06,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:30:06,499 INFO L225 Difference]: With dead ends: 43 [2019-10-03 02:30:06,500 INFO L226 Difference]: Without dead ends: 43 [2019-10-03 02:30:06,501 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:30:06,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-03 02:30:06,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2019-10-03 02:30:06,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-03 02:30:06,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2019-10-03 02:30:06,520 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2019-10-03 02:30:06,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:30:06,523 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2019-10-03 02:30:06,524 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 02:30:06,524 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2019-10-03 02:30:06,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-03 02:30:06,552 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:30:06,552 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:30:06,552 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:30:06,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:30:06,553 INFO L82 PathProgramCache]: Analyzing trace with hash 383573529, now seen corresponding path program 1 times [2019-10-03 02:30:06,554 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:30:06,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:06,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:30:06,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:06,561 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:30:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:30:06,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:30:06,823 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:30:06,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-03 02:30:06,823 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:30:06,824 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-03 02:30:06,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-03 02:30:06,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-03 02:30:06,825 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 8 states. [2019-10-03 02:30:06,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:30:06,980 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2019-10-03 02:30:06,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-03 02:30:06,981 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2019-10-03 02:30:06,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:30:06,982 INFO L225 Difference]: With dead ends: 53 [2019-10-03 02:30:06,982 INFO L226 Difference]: Without dead ends: 45 [2019-10-03 02:30:06,983 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-03 02:30:06,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-03 02:30:06,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2019-10-03 02:30:06,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-03 02:30:06,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2019-10-03 02:30:06,990 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2019-10-03 02:30:06,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:30:06,990 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2019-10-03 02:30:06,990 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-03 02:30:06,990 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2019-10-03 02:30:06,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-03 02:30:06,992 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:30:06,992 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:30:06,992 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:30:06,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:30:06,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1130860167, now seen corresponding path program 1 times [2019-10-03 02:30:06,993 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:30:06,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:06,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:30:06,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:06,998 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:30:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:30:07,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-03 02:30:07,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:30:07,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 02:30:07,115 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:30:07,116 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 02:30:07,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 02:30:07,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:30:07,118 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 3 states. [2019-10-03 02:30:07,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:30:07,154 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2019-10-03 02:30:07,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 02:30:07,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2019-10-03 02:30:07,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:30:07,158 INFO L225 Difference]: With dead ends: 45 [2019-10-03 02:30:07,158 INFO L226 Difference]: Without dead ends: 45 [2019-10-03 02:30:07,158 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:30:07,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-03 02:30:07,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2019-10-03 02:30:07,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-03 02:30:07,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2019-10-03 02:30:07,165 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 37 [2019-10-03 02:30:07,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:30:07,165 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2019-10-03 02:30:07,165 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 02:30:07,166 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2019-10-03 02:30:07,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-03 02:30:07,167 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:30:07,167 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:30:07,168 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:30:07,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:30:07,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1192899781, now seen corresponding path program 1 times [2019-10-03 02:30:07,168 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:30:07,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:07,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:30:07,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:30:07,176 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:30:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:30:07,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-03 02:30:07,285 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:30:07,285 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 02:30:07,286 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 38 with the following transitions: [2019-10-03 02:30:07,289 INFO L207 CegarAbsIntRunner]: [19], [21], [28], [30], [36], [39], [53], [56], [62], [64], [65], [66], [67], [68], [70], [72], [81], [84], [97], [102], [109], [111], [117], [119], [124], [126], [130], [131], [135], [136], [139], [140], [141], [142], [147], [148], [149] [2019-10-03 02:30:07,341 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 02:30:07,341 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 02:30:07,426 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 02:30:07,428 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 32 variables. [2019-10-03 02:30:07,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:30:07,433 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 02:30:07,474 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-03 02:30:07,474 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 02:30:07,477 INFO L420 sIntCurrentIteration]: We unified 36 AI predicates to 36 [2019-10-03 02:30:07,477 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 02:30:07,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 02:30:07,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2019-10-03 02:30:07,479 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:30:07,479 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:30:07,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:30:07,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:30:07,480 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 2 states. [2019-10-03 02:30:07,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:30:07,481 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-03 02:30:07,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:30:07,481 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2019-10-03 02:30:07,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:30:07,482 INFO L225 Difference]: With dead ends: 6 [2019-10-03 02:30:07,482 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:30:07,482 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:30:07,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:30:07,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:30:07,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:30:07,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:30:07,484 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2019-10-03 02:30:07,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:30:07,484 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:30:07,484 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:30:07,484 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:30:07,484 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:30:07,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:30:07 BoogieIcfgContainer [2019-10-03 02:30:07,491 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:30:07,495 INFO L168 Benchmark]: Toolchain (without parser) took 3901.97 ms. Allocated memory was 138.4 MB in the beginning and 221.8 MB in the end (delta: 83.4 MB). Free memory was 85.0 MB in the beginning and 129.3 MB in the end (delta: -44.3 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB. [2019-10-03 02:30:07,496 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 138.4 MB. Free memory was 104.3 MB in the beginning and 104.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:30:07,497 INFO L168 Benchmark]: CACSL2BoogieTranslator took 792.01 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 84.6 MB in the beginning and 164.3 MB in the end (delta: -79.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2019-10-03 02:30:07,498 INFO L168 Benchmark]: Boogie Preprocessor took 106.11 ms. Allocated memory is still 200.8 MB. Free memory was 164.3 MB in the beginning and 161.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2019-10-03 02:30:07,499 INFO L168 Benchmark]: RCFGBuilder took 927.45 ms. Allocated memory is still 200.8 MB. Free memory was 161.2 MB in the beginning and 109.3 MB in the end (delta: 51.9 MB). Peak memory consumption was 51.9 MB. Max. memory is 7.1 GB. [2019-10-03 02:30:07,500 INFO L168 Benchmark]: TraceAbstraction took 2071.20 ms. Allocated memory was 200.8 MB in the beginning and 221.8 MB in the end (delta: 21.0 MB). Free memory was 109.3 MB in the beginning and 129.3 MB in the end (delta: -20.0 MB). Peak memory consumption was 960.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:30:07,505 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 138.4 MB. Free memory was 104.3 MB in the beginning and 104.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 792.01 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 84.6 MB in the beginning and 164.3 MB in the end (delta: -79.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.11 ms. Allocated memory is still 200.8 MB. Free memory was 164.3 MB in the beginning and 161.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 927.45 ms. Allocated memory is still 200.8 MB. Free memory was 161.2 MB in the beginning and 109.3 MB in the end (delta: 51.9 MB). Peak memory consumption was 51.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2071.20 ms. Allocated memory was 200.8 MB in the beginning and 221.8 MB in the end (delta: 21.0 MB). Free memory was 109.3 MB in the beginning and 129.3 MB in the end (delta: -20.0 MB). Peak memory consumption was 960.8 kB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 643]: 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, 60 locations, 1 error locations. SAFE Result, 1.9s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 197 SDtfs, 29 SDslu, 297 SDs, 0 SdLazy, 58 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred 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, 0.9722222222222222 AbsIntWeakeningRatio, 1.7777777777777777 AbsIntAvgWeakeningVarsNumRemoved, 0.16666666666666666 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 163 ConstructedInterpolants, 0 QuantifiedInterpolants, 8299 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 3/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...