java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/sll2n_append_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 02:08:00,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 02:08:00,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 02:08:00,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 02:08:00,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 02:08:00,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 02:08:00,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 02:08:00,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 02:08:00,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 02:08:00,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 02:08:00,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 02:08:00,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 02:08:00,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 02:08:00,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 02:08:00,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 02:08:00,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 02:08:00,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 02:08:00,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 02:08:00,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 02:08:00,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 02:08:00,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 02:08:00,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 02:08:00,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 02:08:00,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 02:08:00,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-08 02:08:00,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-08 02:08:00,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-08 02:08:00,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-08 02:08:00,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-08 02:08:00,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-08 02:08:00,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 02:08:00,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 02:08:00,682 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 02:08:00,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 02:08:00,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 02:08:00,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 02:08:00,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 02:08:00,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 02:08:00,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 02:08:00,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 02:08:00,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 02:08:00,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-08 02:08:00,707 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 02:08:00,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 02:08:00,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 02:08:00,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 02:08:00,709 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 02:08:00,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 02:08:00,710 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 02:08:00,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 02:08:00,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 02:08:00,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 02:08:00,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 02:08:00,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 02:08:00,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 02:08:00,711 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 02:08:00,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 02:08:00,711 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 02:08:00,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 02:08:00,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 02:08:00,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 02:08:00,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 02:08:00,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 02:08:00,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 02:08:00,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 02:08:00,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 02:08:00,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 02:08:00,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 02:08:00,714 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 02:08:00,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 02:08:00,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 02:08:00,743 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 02:08:00,759 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 02:08:00,765 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 02:08:00,767 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 02:08:00,767 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 02:08:00,768 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_append_equal.i [2019-09-08 02:08:00,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69419ef6a/93a3f66f4a4048b1b5a6a0152ead6c04/FLAG84f33d948 [2019-09-08 02:08:01,428 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 02:08:01,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_append_equal.i [2019-09-08 02:08:01,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69419ef6a/93a3f66f4a4048b1b5a6a0152ead6c04/FLAG84f33d948 [2019-09-08 02:08:01,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69419ef6a/93a3f66f4a4048b1b5a6a0152ead6c04 [2019-09-08 02:08:01,702 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 02:08:01,706 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 02:08:01,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 02:08:01,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 02:08:01,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 02:08:01,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 02:08:01" (1/1) ... [2019-09-08 02:08:01,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3740e4fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:08:01, skipping insertion in model container [2019-09-08 02:08:01,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 02:08:01" (1/1) ... [2019-09-08 02:08:01,728 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 02:08:01,785 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 02:08:02,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 02:08:02,257 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 02:08:02,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 02:08:02,379 INFO L192 MainTranslator]: Completed translation [2019-09-08 02:08:02,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:08:02 WrapperNode [2019-09-08 02:08:02,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 02:08:02,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 02:08:02,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 02:08:02,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 02:08:02,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:08:02" (1/1) ... [2019-09-08 02:08:02,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:08:02" (1/1) ... [2019-09-08 02:08:02,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:08:02" (1/1) ... [2019-09-08 02:08:02,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:08:02" (1/1) ... [2019-09-08 02:08:02,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:08:02" (1/1) ... [2019-09-08 02:08:02,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:08:02" (1/1) ... [2019-09-08 02:08:02,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:08:02" (1/1) ... [2019-09-08 02:08:02,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 02:08:02,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 02:08:02,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 02:08:02,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 02:08:02,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:08:02" (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 [2019-09-08 02:08:02,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 02:08:02,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 02:08:02,515 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-08 02:08:02,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-08 02:08:02,516 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-08 02:08:02,516 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-08 02:08:02,516 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-09-08 02:08:02,516 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-09-08 02:08:02,517 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2019-09-08 02:08:02,517 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 02:08:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 02:08:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-08 02:08:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-08 02:08:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-08 02:08:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-08 02:08:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-08 02:08:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-08 02:08:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-08 02:08:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-08 02:08:02,519 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-08 02:08:02,519 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-08 02:08:02,519 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-08 02:08:02,519 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-08 02:08:02,519 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-08 02:08:02,519 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-08 02:08:02,520 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-08 02:08:02,520 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-08 02:08:02,520 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-08 02:08:02,520 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-08 02:08:02,520 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-08 02:08:02,520 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-08 02:08:02,521 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-08 02:08:02,521 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-08 02:08:02,521 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-08 02:08:02,521 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-08 02:08:02,521 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-08 02:08:02,522 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-08 02:08:02,522 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-08 02:08:02,522 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-08 02:08:02,522 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-08 02:08:02,522 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-08 02:08:02,522 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-08 02:08:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-08 02:08:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-08 02:08:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-08 02:08:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-08 02:08:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-08 02:08:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-08 02:08:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-08 02:08:02,524 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-08 02:08:02,524 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-08 02:08:02,524 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-08 02:08:02,524 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-08 02:08:02,524 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-08 02:08:02,524 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-08 02:08:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-08 02:08:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-08 02:08:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-08 02:08:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-08 02:08:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-08 02:08:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-08 02:08:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-08 02:08:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-08 02:08:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-08 02:08:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-08 02:08:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-08 02:08:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-08 02:08:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-08 02:08:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-08 02:08:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-08 02:08:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-08 02:08:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-08 02:08:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-08 02:08:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-08 02:08:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-08 02:08:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-08 02:08:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-08 02:08:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-08 02:08:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-08 02:08:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-08 02:08:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-08 02:08:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-08 02:08:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-08 02:08:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-08 02:08:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-08 02:08:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-08 02:08:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-08 02:08:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-08 02:08:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-08 02:08:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-08 02:08:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-08 02:08:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-08 02:08:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-08 02:08:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-08 02:08:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-08 02:08:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-08 02:08:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-08 02:08:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-08 02:08:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-08 02:08:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-08 02:08:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-08 02:08:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-08 02:08:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-08 02:08:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-08 02:08:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-08 02:08:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-08 02:08:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-08 02:08:02,533 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-08 02:08:02,533 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-08 02:08:02,533 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-08 02:08:02,533 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-08 02:08:02,533 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-08 02:08:02,533 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-08 02:08:02,533 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-08 02:08:02,533 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-08 02:08:02,534 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-08 02:08:02,534 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-08 02:08:02,534 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-08 02:08:02,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-08 02:08:02,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-08 02:08:02,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 02:08:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-09-08 02:08:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-09-08 02:08:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-08 02:08:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 02:08:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2019-09-08 02:08:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 02:08:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 02:08:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-08 02:08:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 02:08:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 02:08:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 02:08:02,861 INFO L684 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-08 02:08:03,062 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 02:08:03,062 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-08 02:08:03,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 02:08:03 BoogieIcfgContainer [2019-09-08 02:08:03,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 02:08:03,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 02:08:03,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 02:08:03,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 02:08:03,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 02:08:01" (1/3) ... [2019-09-08 02:08:03,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e359be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 02:08:03, skipping insertion in model container [2019-09-08 02:08:03,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:08:02" (2/3) ... [2019-09-08 02:08:03,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e359be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 02:08:03, skipping insertion in model container [2019-09-08 02:08:03,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 02:08:03" (3/3) ... [2019-09-08 02:08:03,076 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_append_equal.i [2019-09-08 02:08:03,093 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 02:08:03,104 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 02:08:03,124 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 02:08:03,166 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 02:08:03,167 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 02:08:03,167 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 02:08:03,168 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 02:08:03,169 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 02:08:03,169 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 02:08:03,169 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 02:08:03,169 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 02:08:03,169 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 02:08:03,216 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2019-09-08 02:08:03,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-09-08 02:08:03,227 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:08:03,228 INFO L399 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] [2019-09-08 02:08:03,230 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:08:03,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:08:03,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1667158038, now seen corresponding path program 1 times [2019-09-08 02:08:03,239 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:08:03,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:08:03,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:03,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:08:03,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:08:03,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:08:03,417 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 02:08:03,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 02:08:03,422 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 02:08:03,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 02:08:03,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 02:08:03,440 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2019-09-08 02:08:03,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:08:03,469 INFO L93 Difference]: Finished difference Result 88 states and 111 transitions. [2019-09-08 02:08:03,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 02:08:03,471 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2019-09-08 02:08:03,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:08:03,480 INFO L225 Difference]: With dead ends: 88 [2019-09-08 02:08:03,480 INFO L226 Difference]: Without dead ends: 37 [2019-09-08 02:08:03,484 INFO L628 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 [2019-09-08 02:08:03,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-09-08 02:08:03,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-09-08 02:08:03,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-09-08 02:08:03,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2019-09-08 02:08:03,526 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 29 [2019-09-08 02:08:03,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:08:03,526 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2019-09-08 02:08:03,526 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 02:08:03,527 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2019-09-08 02:08:03,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-09-08 02:08:03,529 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:08:03,529 INFO L399 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] [2019-09-08 02:08:03,529 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:08:03,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:08:03,530 INFO L82 PathProgramCache]: Analyzing trace with hash 937001954, now seen corresponding path program 1 times [2019-09-08 02:08:03,530 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:08:03,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:08:03,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:03,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:08:03,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:08:03,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:08:03,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 02:08:03,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 02:08:03,711 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 02:08:03,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 02:08:03,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 02:08:03,715 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 5 states. [2019-09-08 02:08:03,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:08:03,817 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2019-09-08 02:08:03,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 02:08:03,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-09-08 02:08:03,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:08:03,819 INFO L225 Difference]: With dead ends: 66 [2019-09-08 02:08:03,819 INFO L226 Difference]: Without dead ends: 41 [2019-09-08 02:08:03,820 INFO L628 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 [2019-09-08 02:08:03,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-09-08 02:08:03,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2019-09-08 02:08:03,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-09-08 02:08:03,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2019-09-08 02:08:03,830 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 29 [2019-09-08 02:08:03,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:08:03,831 INFO L475 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2019-09-08 02:08:03,831 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 02:08:03,831 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2019-09-08 02:08:03,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-09-08 02:08:03,832 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:08:03,833 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:08:03,833 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:08:03,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:08:03,833 INFO L82 PathProgramCache]: Analyzing trace with hash -496897929, now seen corresponding path program 1 times [2019-09-08 02:08:03,834 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:08:03,834 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:08:03,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:03,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:08:03,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:08:03,945 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-08 02:08:03,945 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 02:08:03,945 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 02:08:03,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:08:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:08:04,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-08 02:08:04,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 02:08:04,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:08:04,088 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 02:08:04,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-09-08 02:08:04,089 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 02:08:04,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 02:08:04,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-08 02:08:04,090 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 6 states. [2019-09-08 02:08:04,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:08:04,182 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2019-09-08 02:08:04,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 02:08:04,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2019-09-08 02:08:04,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:08:04,187 INFO L225 Difference]: With dead ends: 70 [2019-09-08 02:08:04,187 INFO L226 Difference]: Without dead ends: 45 [2019-09-08 02:08:04,188 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-08 02:08:04,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-09-08 02:08:04,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2019-09-08 02:08:04,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-09-08 02:08:04,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2019-09-08 02:08:04,203 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 38 [2019-09-08 02:08:04,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:08:04,205 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2019-09-08 02:08:04,205 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 02:08:04,205 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2019-09-08 02:08:04,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-08 02:08:04,210 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:08:04,210 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 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] [2019-09-08 02:08:04,210 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:08:04,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:08:04,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1152263294, now seen corresponding path program 2 times [2019-09-08 02:08:04,211 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:08:04,211 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:08:04,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:04,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:08:04,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:08:04,505 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 02:08:04,506 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 02:08:04,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-09-08 02:08:04,506 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 02:08:04,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 02:08:04,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-09-08 02:08:04,507 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 12 states. [2019-09-08 02:08:05,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:08:05,048 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2019-09-08 02:08:05,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-08 02:08:05,050 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2019-09-08 02:08:05,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:08:05,052 INFO L225 Difference]: With dead ends: 57 [2019-09-08 02:08:05,052 INFO L226 Difference]: Without dead ends: 55 [2019-09-08 02:08:05,052 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2019-09-08 02:08:05,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-09-08 02:08:05,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2019-09-08 02:08:05,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-09-08 02:08:05,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2019-09-08 02:08:05,084 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 47 [2019-09-08 02:08:05,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:08:05,084 INFO L475 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2019-09-08 02:08:05,084 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 02:08:05,085 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2019-09-08 02:08:05,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-08 02:08:05,089 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:08:05,092 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 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] [2019-09-08 02:08:05,092 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:08:05,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:08:05,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1152264968, now seen corresponding path program 1 times [2019-09-08 02:08:05,093 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:08:05,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:08:05,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:05,095 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 02:08:05,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:08:05,275 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 02:08:05,275 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 02:08:05,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-09-08 02:08:05,276 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-08 02:08:05,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-08 02:08:05,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-09-08 02:08:05,277 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 10 states. [2019-09-08 02:08:05,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:08:05,411 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2019-09-08 02:08:05,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 02:08:05,412 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2019-09-08 02:08:05,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:08:05,413 INFO L225 Difference]: With dead ends: 55 [2019-09-08 02:08:05,413 INFO L226 Difference]: Without dead ends: 52 [2019-09-08 02:08:05,414 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-09-08 02:08:05,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-09-08 02:08:05,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2019-09-08 02:08:05,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-09-08 02:08:05,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2019-09-08 02:08:05,437 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 47 [2019-09-08 02:08:05,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:08:05,438 INFO L475 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2019-09-08 02:08:05,438 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-08 02:08:05,438 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2019-09-08 02:08:05,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-09-08 02:08:05,441 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:08:05,442 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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] [2019-09-08 02:08:05,442 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:08:05,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:08:05,442 INFO L82 PathProgramCache]: Analyzing trace with hash 776583197, now seen corresponding path program 1 times [2019-09-08 02:08:05,442 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:08:05,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:08:05,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:05,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:08:05,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:08:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:08:05,870 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-08 02:08:05,871 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 02:08:05,871 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 02:08:05,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 02:08:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:08:05,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 39 conjunts are in the unsatisfiable core [2019-09-08 02:08:05,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 02:08:06,131 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2019-09-08 02:08:06,132 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 02:08:06,142 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 02:08:06,143 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-08 02:08:06,144 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-09-08 02:08:08,197 WARN L860 $PredicateComparison]: unable to prove that (exists ((node_create_~temp~0.offset Int) (node_create_~temp~0.base Int)) (and (<= (+ |c_#StackHeapBarrier| 1) node_create_~temp~0.base) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base (store (store (select |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base) (+ node_create_~temp~0.offset 4) 0) node_create_~temp~0.offset (select (select |c_#memory_$Pointer$.base| node_create_~temp~0.base) node_create_~temp~0.offset)))))) is different from true