/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 05:21:02,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:21:02,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:21:02,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 05:21:02,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 05:21:02,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 05:21:03,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 05:21:03,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 05:21:03,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 05:21:03,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 05:21:03,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 05:21:03,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 05:21:03,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:21:03,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:21:03,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:21:03,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:21:03,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:21:03,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:21:03,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:21:03,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:21:03,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:21:03,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:21:03,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:21:03,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:21:03,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 05:21:03,073 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 05:21:03,073 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 05:21:03,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 05:21:03,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 05:21:03,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 05:21:03,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 05:21:03,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 05:21:03,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 05:21:03,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 05:21:03,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 05:21:03,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 05:21:03,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 05:21:03,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 05:21:03,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:21:03,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:21:03,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:21:03,090 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 05:21:03,114 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:21:03,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:21:03,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:21:03,119 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:21:03,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:21:03,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:21:03,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:21:03,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:21:03,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:21:03,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:21:03,122 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:21:03,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:21:03,122 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:21:03,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:21:03,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:21:03,123 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:21:03,123 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:21:03,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:21:03,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:21:03,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:21:03,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:21:03,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:21:03,124 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:21:03,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:21:03,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:21:03,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:21:03,611 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:21:03,612 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:21:03,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i [2020-11-07 05:21:03,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a539cb38a/b22338e17e184c69b80b437612386a6b/FLAG16cbdd7e9 [2020-11-07 05:21:04,463 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:21:04,464 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i [2020-11-07 05:21:04,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a539cb38a/b22338e17e184c69b80b437612386a6b/FLAG16cbdd7e9 [2020-11-07 05:21:04,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a539cb38a/b22338e17e184c69b80b437612386a6b [2020-11-07 05:21:04,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:21:04,762 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:21:04,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:21:04,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:21:04,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:21:04,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:21:04" (1/1) ... [2020-11-07 05:21:04,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b611e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:04, skipping insertion in model container [2020-11-07 05:21:04,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:21:04" (1/1) ... [2020-11-07 05:21:04,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:21:04,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:21:05,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:21:05,257 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:21:05,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:21:05,434 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:21:05,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:05 WrapperNode [2020-11-07 05:21:05,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:21:05,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:21:05,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:21:05,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:21:05,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:05" (1/1) ... [2020-11-07 05:21:05,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:05" (1/1) ... [2020-11-07 05:21:05,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:05" (1/1) ... [2020-11-07 05:21:05,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:05" (1/1) ... [2020-11-07 05:21:05,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:05" (1/1) ... [2020-11-07 05:21:05,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:05" (1/1) ... [2020-11-07 05:21:05,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:05" (1/1) ... [2020-11-07 05:21:05,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:21:05,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:21:05,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:21:05,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:21:05,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:05" (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 [2020-11-07 05:21:05,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:21:05,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:21:05,692 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:21:05,692 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:21:05,692 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-07 05:21:05,693 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-07 05:21:05,693 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-07 05:21:05,693 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-07 05:21:05,693 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-07 05:21:05,694 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-07 05:21:05,694 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-07 05:21:05,694 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-07 05:21:05,694 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-07 05:21:05,694 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-07 05:21:05,695 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-07 05:21:05,695 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-07 05:21:05,695 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-07 05:21:05,695 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-07 05:21:05,696 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-07 05:21:05,697 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-07 05:21:05,697 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-07 05:21:05,697 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-07 05:21:05,698 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-07 05:21:05,698 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-07 05:21:05,698 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-07 05:21:05,698 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-07 05:21:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-07 05:21:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-07 05:21:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-07 05:21:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-07 05:21:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-07 05:21:05,700 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-07 05:21:05,700 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-07 05:21:05,700 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-07 05:21:05,700 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-07 05:21:05,700 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-07 05:21:05,700 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-07 05:21:05,700 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-07 05:21:05,701 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-07 05:21:05,701 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-07 05:21:05,701 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-07 05:21:05,701 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-07 05:21:05,701 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-07 05:21:05,701 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-07 05:21:05,701 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-07 05:21:05,702 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-07 05:21:05,702 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-07 05:21:05,702 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-07 05:21:05,702 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-07 05:21:05,702 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-07 05:21:05,702 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-07 05:21:05,703 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-07 05:21:05,703 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-07 05:21:05,703 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-07 05:21:05,703 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 05:21:05,703 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-07 05:21:05,703 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-07 05:21:05,703 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-07 05:21:05,704 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-07 05:21:05,704 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-07 05:21:05,704 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-07 05:21:05,704 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-07 05:21:05,705 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-07 05:21:05,706 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:21:05,706 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-07 05:21:05,706 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-07 05:21:05,706 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-07 05:21:05,706 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 05:21:05,706 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-07 05:21:05,707 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-07 05:21:05,707 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-07 05:21:05,708 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-07 05:21:05,708 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-07 05:21:05,708 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-07 05:21:05,708 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-07 05:21:05,708 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-07 05:21:05,708 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-07 05:21:05,709 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-07 05:21:05,709 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-07 05:21:05,709 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-07 05:21:05,710 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-07 05:21:05,710 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-07 05:21:05,710 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-07 05:21:05,710 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-07 05:21:05,711 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-07 05:21:05,711 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-07 05:21:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-07 05:21:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-07 05:21:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-07 05:21:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-07 05:21:05,714 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-07 05:21:05,714 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-07 05:21:05,715 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-07 05:21:05,716 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-07 05:21:05,716 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-07 05:21:05,716 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-07 05:21:05,721 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-07 05:21:05,721 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-07 05:21:05,721 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-07 05:21:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-07 05:21:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-07 05:21:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-07 05:21:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-07 05:21:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-07 05:21:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-07 05:21:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-07 05:21:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-07 05:21:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 05:21:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:21:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 05:21:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 05:21:05,724 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:21:05,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:21:05,724 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:21:05,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 05:21:05,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-07 05:21:05,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:21:05,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-07 05:21:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:21:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:21:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:21:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:21:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:21:06,415 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:21:06,416 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-07 05:21:06,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:21:06 BoogieIcfgContainer [2020-11-07 05:21:06,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:21:06,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:21:06,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:21:06,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:21:06,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:21:04" (1/3) ... [2020-11-07 05:21:06,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb3295c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:21:06, skipping insertion in model container [2020-11-07 05:21:06,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:05" (2/3) ... [2020-11-07 05:21:06,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb3295c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:21:06, skipping insertion in model container [2020-11-07 05:21:06,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:21:06" (3/3) ... [2020-11-07 05:21:06,428 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2020-11-07 05:21:06,445 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:21:06,449 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:21:06,462 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:21:06,488 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:21:06,488 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:21:06,488 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:21:06,488 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:21:06,488 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:21:06,488 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:21:06,489 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:21:06,489 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:21:06,506 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states. [2020-11-07 05:21:06,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-07 05:21:06,517 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:21:06,518 INFO L422 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] [2020-11-07 05:21:06,518 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:21:06,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:21:06,525 INFO L82 PathProgramCache]: Analyzing trace with hash 865716265, now seen corresponding path program 1 times [2020-11-07 05:21:06,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:21:06,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854627157] [2020-11-07 05:21:06,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:21:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:06,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:21:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:06,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:21:06,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854627157] [2020-11-07 05:21:06,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:21:06,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 05:21:06,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141442373] [2020-11-07 05:21:06,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 05:21:06,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:21:06,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 05:21:06,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 05:21:06,880 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 3 states. [2020-11-07 05:21:07,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:21:07,230 INFO L93 Difference]: Finished difference Result 159 states and 197 transitions. [2020-11-07 05:21:07,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 05:21:07,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-07 05:21:07,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:21:07,243 INFO L225 Difference]: With dead ends: 159 [2020-11-07 05:21:07,243 INFO L226 Difference]: Without dead ends: 73 [2020-11-07 05:21:07,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 05:21:07,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-07 05:21:07,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-11-07 05:21:07,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-07 05:21:07,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-11-07 05:21:07,300 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 23 [2020-11-07 05:21:07,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:21:07,301 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-11-07 05:21:07,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 05:21:07,301 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-11-07 05:21:07,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-07 05:21:07,302 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:21:07,303 INFO L422 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] [2020-11-07 05:21:07,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:21:07,303 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:21:07,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:21:07,304 INFO L82 PathProgramCache]: Analyzing trace with hash -339226551, now seen corresponding path program 1 times [2020-11-07 05:21:07,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:21:07,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644075646] [2020-11-07 05:21:07,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:21:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:07,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:21:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:07,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:21:07,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644075646] [2020-11-07 05:21:07,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:21:07,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 05:21:07,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342203964] [2020-11-07 05:21:07,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 05:21:07,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:21:07,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 05:21:07,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 05:21:07,460 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 6 states. [2020-11-07 05:21:07,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:21:07,729 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2020-11-07 05:21:07,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 05:21:07,730 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-07 05:21:07,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:21:07,732 INFO L225 Difference]: With dead ends: 100 [2020-11-07 05:21:07,732 INFO L226 Difference]: Without dead ends: 96 [2020-11-07 05:21:07,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:21:07,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-11-07 05:21:07,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 72. [2020-11-07 05:21:07,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-07 05:21:07,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-11-07 05:21:07,752 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 25 [2020-11-07 05:21:07,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:21:07,752 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-11-07 05:21:07,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 05:21:07,753 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-11-07 05:21:07,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-07 05:21:07,754 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:21:07,754 INFO L422 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] [2020-11-07 05:21:07,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:21:07,755 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:21:07,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:21:07,755 INFO L82 PathProgramCache]: Analyzing trace with hash 794907135, now seen corresponding path program 1 times [2020-11-07 05:21:07,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:21:07,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576975929] [2020-11-07 05:21:07,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:21:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:07,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:21:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:07,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:21:07,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576975929] [2020-11-07 05:21:07,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:21:07,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 05:21:07,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164181700] [2020-11-07 05:21:07,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:21:07,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:21:07,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:21:07,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:21:07,934 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 8 states. [2020-11-07 05:21:08,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:21:08,259 INFO L93 Difference]: Finished difference Result 126 states and 135 transitions. [2020-11-07 05:21:08,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 05:21:08,260 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-11-07 05:21:08,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:21:08,262 INFO L225 Difference]: With dead ends: 126 [2020-11-07 05:21:08,262 INFO L226 Difference]: Without dead ends: 121 [2020-11-07 05:21:08,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-11-07 05:21:08,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-11-07 05:21:08,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 81. [2020-11-07 05:21:08,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-07 05:21:08,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2020-11-07 05:21:08,282 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 29 [2020-11-07 05:21:08,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:21:08,282 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2020-11-07 05:21:08,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:21:08,283 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2020-11-07 05:21:08,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-07 05:21:08,284 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:21:08,284 INFO L422 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] [2020-11-07 05:21:08,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 05:21:08,285 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:21:08,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:21:08,285 INFO L82 PathProgramCache]: Analyzing trace with hash -2030752988, now seen corresponding path program 1 times [2020-11-07 05:21:08,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:21:08,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127200642] [2020-11-07 05:21:08,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:21:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 05:21:08,329 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 05:21:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 05:21:08,364 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 05:21:08,398 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 05:21:08,398 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 05:21:08,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 05:21:08,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:21:08 BoogieIcfgContainer [2020-11-07 05:21:08,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 05:21:08,453 INFO L168 Benchmark]: Toolchain (without parser) took 3696.38 ms. Allocated memory was 125.8 MB in the beginning and 167.8 MB in the end (delta: 41.9 MB). Free memory was 100.4 MB in the beginning and 124.4 MB in the end (delta: -24.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB. [2020-11-07 05:21:08,454 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 87.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 05:21:08,455 INFO L168 Benchmark]: CACSL2BoogieTranslator took 667.16 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 77.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-07 05:21:08,456 INFO L168 Benchmark]: Boogie Preprocessor took 151.47 ms. Allocated memory was 125.8 MB in the beginning and 167.8 MB in the end (delta: 41.9 MB). Free memory was 77.9 MB in the beginning and 151.4 MB in the end (delta: -73.5 MB). Peak memory consumption was 7.2 MB. Max. memory is 8.0 GB. [2020-11-07 05:21:08,457 INFO L168 Benchmark]: RCFGBuilder took 820.95 ms. Allocated memory is still 167.8 MB. Free memory was 151.4 MB in the beginning and 149.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 50.2 MB. Max. memory is 8.0 GB. [2020-11-07 05:21:08,458 INFO L168 Benchmark]: TraceAbstraction took 2030.33 ms. Allocated memory is still 167.8 MB. Free memory was 149.4 MB in the beginning and 124.4 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.5 MB. Max. memory is 8.0 GB. [2020-11-07 05:21:08,461 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 87.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 667.16 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 77.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 151.47 ms. Allocated memory was 125.8 MB in the beginning and 167.8 MB in the end (delta: 41.9 MB). Free memory was 77.9 MB in the beginning and 151.4 MB in the end (delta: -73.5 MB). Peak memory consumption was 7.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 820.95 ms. Allocated memory is still 167.8 MB. Free memory was 151.4 MB in the beginning and 149.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 50.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2030.33 ms. Allocated memory is still 167.8 MB. Free memory was 149.4 MB in the beginning and 124.4 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 993]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1007] list->next = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1008] list->colour = BLACK VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1010] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1034] end = ((void*)0) VAL [end={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1035] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1038] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1039] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1039] COND FALSE !(!(BLACK == end->colour)) VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1041] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1043] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1043] COND FALSE !(RED == end->colour) VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1049] EXPR end->next VAL [end={-1:0}, end->next={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1049] COND TRUE !(end->next) VAL [end={-1:0}, end->next={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1049] CALL reach_error() [L993] COND FALSE !(0) [L993] __assert_fail ("0", "sll-rb-cnstr_1-2.c", 13, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 102 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 223 SDtfs, 493 SDslu, 238 SDs, 0 SdLazy, 356 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 64 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 7252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...