/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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-optional-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-11 01:08:33,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-11 01:08:33,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-11 01:08:33,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-11 01:08:33,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-11 01:08:33,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-11 01:08:33,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-11 01:08:33,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-11 01:08:33,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-11 01:08:33,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-11 01:08:33,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-11 01:08:33,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-11 01:08:33,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-11 01:08:33,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-11 01:08:33,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-11 01:08:33,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-11 01:08:33,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-11 01:08:33,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-11 01:08:33,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-11 01:08:33,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-11 01:08:33,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-11 01:08:33,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-11 01:08:33,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-11 01:08:33,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-11 01:08:33,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-11 01:08:33,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-11 01:08:33,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-11 01:08:33,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-11 01:08:33,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-11 01:08:33,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-11 01:08:33,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-11 01:08:33,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-11 01:08:33,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-11 01:08:33,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-11 01:08:33,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-11 01:08:33,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-11 01:08:33,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-11 01:08:33,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-11 01:08:33,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-11 01:08:33,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-11 01:08:33,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-11 01:08:33,993 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-11 01:08:34,006 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-11 01:08:34,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-11 01:08:34,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-11 01:08:34,009 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-11 01:08:34,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-11 01:08:34,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-11 01:08:34,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-11 01:08:34,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-11 01:08:34,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-11 01:08:34,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-11 01:08:34,010 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-11 01:08:34,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-11 01:08:34,010 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-11 01:08:34,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-11 01:08:34,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-11 01:08:34,011 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-11 01:08:34,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-11 01:08:34,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-11 01:08:34,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-11 01:08:34,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-11 01:08:34,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-11 01:08:34,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-11 01:08:34,013 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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 [2020-07-11 01:08:34,305 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-11 01:08:34,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-11 01:08:34,321 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-11 01:08:34,322 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-11 01:08:34,323 INFO L275 PluginConnector]: CDTParser initialized [2020-07-11 01:08:34,323 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-optional-2.i [2020-07-11 01:08:34,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7024318cb/97c951f950ea4a4999c24d019b79f6d6/FLAGed3f07e26 [2020-07-11 01:08:34,910 INFO L306 CDTParser]: Found 1 translation units. [2020-07-11 01:08:34,911 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-optional-2.i [2020-07-11 01:08:34,929 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7024318cb/97c951f950ea4a4999c24d019b79f6d6/FLAGed3f07e26 [2020-07-11 01:08:35,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7024318cb/97c951f950ea4a4999c24d019b79f6d6 [2020-07-11 01:08:35,208 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-11 01:08:35,210 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-11 01:08:35,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-11 01:08:35,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-11 01:08:35,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-11 01:08:35,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 01:08:35" (1/1) ... [2020-07-11 01:08:35,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577a1ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:08:35, skipping insertion in model container [2020-07-11 01:08:35,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 01:08:35" (1/1) ... [2020-07-11 01:08:35,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-11 01:08:35,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-11 01:08:35,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 01:08:35,681 INFO L203 MainTranslator]: Completed pre-run [2020-07-11 01:08:35,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 01:08:35,819 INFO L208 MainTranslator]: Completed translation [2020-07-11 01:08:35,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:08:35 WrapperNode [2020-07-11 01:08:35,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-11 01:08:35,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-11 01:08:35,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-11 01:08:35,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-11 01:08:35,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:08:35" (1/1) ... [2020-07-11 01:08:35,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:08:35" (1/1) ... [2020-07-11 01:08:35,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:08:35" (1/1) ... [2020-07-11 01:08:35,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:08:35" (1/1) ... [2020-07-11 01:08:35,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:08:35" (1/1) ... [2020-07-11 01:08:35,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:08:35" (1/1) ... [2020-07-11 01:08:35,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:08:35" (1/1) ... [2020-07-11 01:08:35,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-11 01:08:35,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-11 01:08:35,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-11 01:08:35,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-11 01:08:35,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:08:35" (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 [2020-07-11 01:08:35,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-11 01:08:35,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-11 01:08:35,962 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-11 01:08:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-11 01:08:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-11 01:08:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-11 01:08:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-11 01:08:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-11 01:08:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-11 01:08:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-11 01:08:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-11 01:08:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-11 01:08:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-11 01:08:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-11 01:08:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-11 01:08:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-11 01:08:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-11 01:08:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-11 01:08:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-11 01:08:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-11 01:08:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-11 01:08:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-11 01:08:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-11 01:08:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-11 01:08:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-11 01:08:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-11 01:08:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-11 01:08:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-11 01:08:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-11 01:08:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-11 01:08:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-11 01:08:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-11 01:08:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-11 01:08:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-11 01:08:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-11 01:08:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-11 01:08:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-11 01:08:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-11 01:08:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-11 01:08:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-11 01:08:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-11 01:08:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-11 01:08:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-11 01:08:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-11 01:08:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-11 01:08:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-11 01:08:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-11 01:08:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-11 01:08:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-11 01:08:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-11 01:08:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-11 01:08:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-11 01:08:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-11 01:08:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-11 01:08:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-11 01:08:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-11 01:08:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-11 01:08:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-11 01:08:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-11 01:08:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-11 01:08:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-11 01:08:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-11 01:08:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-11 01:08:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-11 01:08:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-11 01:08:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-11 01:08:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-11 01:08:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-11 01:08:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-11 01:08:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-11 01:08:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-11 01:08:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-11 01:08:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-11 01:08:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-11 01:08:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-11 01:08:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-11 01:08:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-11 01:08:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-11 01:08:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-11 01:08:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-11 01:08:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-11 01:08:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-11 01:08:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-11 01:08:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-11 01:08:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-11 01:08:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-11 01:08:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-11 01:08:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-11 01:08:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-11 01:08:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-11 01:08:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-11 01:08:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-11 01:08:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-11 01:08:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-11 01:08:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-11 01:08:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-11 01:08:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-11 01:08:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-11 01:08:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-11 01:08:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-11 01:08:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-11 01:08:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-11 01:08:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-11 01:08:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-11 01:08:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-11 01:08:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-11 01:08:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-11 01:08:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-11 01:08:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-11 01:08:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-11 01:08:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-11 01:08:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-11 01:08:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-11 01:08:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-11 01:08:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-11 01:08:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-11 01:08:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-11 01:08:36,628 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-11 01:08:36,628 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-11 01:08:36,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 01:08:36 BoogieIcfgContainer [2020-07-11 01:08:36,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-11 01:08:36,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-11 01:08:36,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-11 01:08:36,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-11 01:08:36,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 01:08:35" (1/3) ... [2020-07-11 01:08:36,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da564f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 01:08:36, skipping insertion in model container [2020-07-11 01:08:36,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:08:35" (2/3) ... [2020-07-11 01:08:36,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da564f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 01:08:36, skipping insertion in model container [2020-07-11 01:08:36,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 01:08:36" (3/3) ... [2020-07-11 01:08:36,645 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-optional-2.i [2020-07-11 01:08:36,655 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-11 01:08:36,665 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-11 01:08:36,675 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-11 01:08:36,694 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-11 01:08:36,695 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-11 01:08:36,695 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-11 01:08:36,695 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-11 01:08:36,696 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-11 01:08:36,696 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-11 01:08:36,696 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-11 01:08:36,696 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-11 01:08:36,712 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2020-07-11 01:08:36,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-11 01:08:36,724 INFO L414 BasicCegarLoop]: Found error trace [2020-07-11 01:08:36,725 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] [2020-07-11 01:08:36,726 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-11 01:08:36,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-11 01:08:36,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1919098423, now seen corresponding path program 1 times [2020-07-11 01:08:36,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-11 01:08:36,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214938724] [2020-07-11 01:08:36,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-11 01:08:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 01:08:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 01:08:36,985 INFO L280 TraceCheckUtils]: 0: Hoare triple {106#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {99#true} is VALID [2020-07-11 01:08:36,986 INFO L280 TraceCheckUtils]: 1: Hoare triple {99#true} #valid := #valid[0 := 0]; {99#true} is VALID [2020-07-11 01:08:36,986 INFO L280 TraceCheckUtils]: 2: Hoare triple {99#true} assume 0 < #StackHeapBarrier; {99#true} is VALID [2020-07-11 01:08:36,987 INFO L280 TraceCheckUtils]: 3: Hoare triple {99#true} assume true; {99#true} is VALID [2020-07-11 01:08:36,988 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {99#true} {99#true} #169#return; {99#true} is VALID [2020-07-11 01:08:36,991 INFO L263 TraceCheckUtils]: 0: Hoare triple {99#true} call ULTIMATE.init(); {106#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-11 01:08:36,991 INFO L280 TraceCheckUtils]: 1: Hoare triple {106#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {99#true} is VALID [2020-07-11 01:08:36,992 INFO L280 TraceCheckUtils]: 2: Hoare triple {99#true} #valid := #valid[0 := 0]; {99#true} is VALID [2020-07-11 01:08:36,992 INFO L280 TraceCheckUtils]: 3: Hoare triple {99#true} assume 0 < #StackHeapBarrier; {99#true} is VALID [2020-07-11 01:08:36,992 INFO L280 TraceCheckUtils]: 4: Hoare triple {99#true} assume true; {99#true} is VALID [2020-07-11 01:08:36,993 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {99#true} {99#true} #169#return; {99#true} is VALID [2020-07-11 01:08:36,993 INFO L263 TraceCheckUtils]: 6: Hoare triple {99#true} call #t~ret19 := main(); {99#true} is VALID [2020-07-11 01:08:36,993 INFO L280 TraceCheckUtils]: 7: Hoare triple {99#true} SUMMARY for call #t~malloc0.base, #t~malloc0.offset := #Ultimate.allocOnHeap(12); srcloc: mainENTRY {99#true} is VALID [2020-07-11 01:08:36,994 INFO L280 TraceCheckUtils]: 8: Hoare triple {99#true} ~head~0.base, ~head~0.offset := #t~malloc0.base, #t~malloc0.offset; {99#true} is VALID [2020-07-11 01:08:36,994 INFO L280 TraceCheckUtils]: 9: Hoare triple {99#true} SUMMARY for call write~$Pointer$(0, 0, ~head~0.base, ~head~0.offset, 4); srcloc: L986 {99#true} is VALID [2020-07-11 01:08:36,995 INFO L280 TraceCheckUtils]: 10: Hoare triple {99#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {99#true} is VALID [2020-07-11 01:08:36,995 INFO L280 TraceCheckUtils]: 11: Hoare triple {99#true} assume !(0 != #t~nondet1); {99#true} is VALID [2020-07-11 01:08:36,995 INFO L280 TraceCheckUtils]: 12: Hoare triple {99#true} havoc #t~nondet1; {99#true} is VALID [2020-07-11 01:08:36,995 INFO L280 TraceCheckUtils]: 13: Hoare triple {99#true} assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647; {99#true} is VALID [2020-07-11 01:08:36,996 INFO L280 TraceCheckUtils]: 14: Hoare triple {99#true} assume 0 != #t~nondet4; {99#true} is VALID [2020-07-11 01:08:36,996 INFO L280 TraceCheckUtils]: 15: Hoare triple {99#true} havoc #t~nondet4; {99#true} is VALID [2020-07-11 01:08:36,996 INFO L280 TraceCheckUtils]: 16: Hoare triple {99#true} SUMMARY for call write~int(1, ~head~0.base, 8 + ~head~0.offset, 4); srcloc: L987-13 {99#true} is VALID [2020-07-11 01:08:36,997 INFO L280 TraceCheckUtils]: 17: Hoare triple {99#true} SUMMARY for call write~$Pointer$(~head~0.base, ~head~0.offset, ~head~0.base, 4 + ~head~0.offset, 4); srcloc: L987-14 {99#true} is VALID [2020-07-11 01:08:36,997 INFO L280 TraceCheckUtils]: 18: Hoare triple {99#true} ~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset; {99#true} is VALID [2020-07-11 01:08:36,998 INFO L280 TraceCheckUtils]: 19: Hoare triple {99#true} assume !true; {100#false} is VALID [2020-07-11 01:08:36,999 INFO L280 TraceCheckUtils]: 20: Hoare triple {100#false} ~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset; {100#false} is VALID [2020-07-11 01:08:36,999 INFO L280 TraceCheckUtils]: 21: Hoare triple {100#false} assume !!(~x~0.base != 0 || ~x~0.offset != 0); {100#false} is VALID [2020-07-11 01:08:36,999 INFO L280 TraceCheckUtils]: 22: Hoare triple {100#false} SUMMARY for call #t~mem12 := read~int(~x~0.base, 8 + ~x~0.offset, 4); srcloc: L996-16 {100#false} is VALID [2020-07-11 01:08:37,000 INFO L280 TraceCheckUtils]: 23: Hoare triple {100#false} #t~short14 := 2 == #t~mem12; {100#false} is VALID [2020-07-11 01:08:37,000 INFO L280 TraceCheckUtils]: 24: Hoare triple {100#false} assume !#t~short14; {100#false} is VALID [2020-07-11 01:08:37,000 INFO L280 TraceCheckUtils]: 25: Hoare triple {100#false} assume !#t~short14; {100#false} is VALID [2020-07-11 01:08:37,001 INFO L280 TraceCheckUtils]: 26: Hoare triple {100#false} havoc #t~mem13.base, #t~mem13.offset; {100#false} is VALID [2020-07-11 01:08:37,001 INFO L280 TraceCheckUtils]: 27: Hoare triple {100#false} havoc #t~mem12; {100#false} is VALID [2020-07-11 01:08:37,001 INFO L280 TraceCheckUtils]: 28: Hoare triple {100#false} havoc #t~short14; {100#false} is VALID [2020-07-11 01:08:37,002 INFO L280 TraceCheckUtils]: 29: Hoare triple {100#false} assume !false; {100#false} is VALID [2020-07-11 01:08:37,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-11 01:08:37,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214938724] [2020-07-11 01:08:37,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-11 01:08:37,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-11 01:08:37,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099912555] [2020-07-11 01:08:37,015 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-07-11 01:08:37,018 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-11 01:08:37,022 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-11 01:08:37,070 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 01:08:37,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-11 01:08:37,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-11 01:08:37,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-11 01:08:37,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-11 01:08:37,082 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 3 states. [2020-07-11 01:08:37,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 01:08:37,505 INFO L93 Difference]: Finished difference Result 135 states and 157 transitions. [2020-07-11 01:08:37,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-11 01:08:37,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-07-11 01:08:37,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-11 01:08:37,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-11 01:08:37,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2020-07-11 01:08:37,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-11 01:08:37,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2020-07-11 01:08:37,528 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 157 transitions. [2020-07-11 01:08:37,707 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 157 edges. 157 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 01:08:37,722 INFO L225 Difference]: With dead ends: 135 [2020-07-11 01:08:37,722 INFO L226 Difference]: Without dead ends: 77 [2020-07-11 01:08:37,726 INFO L675 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 [2020-07-11 01:08:37,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-07-11 01:08:37,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-07-11 01:08:37,800 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-11 01:08:37,801 INFO L82 GeneralOperation]: Start isEquivalent. First operand 77 states. Second operand 77 states. [2020-07-11 01:08:37,802 INFO L74 IsIncluded]: Start isIncluded. First operand 77 states. Second operand 77 states. [2020-07-11 01:08:37,802 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 77 states. [2020-07-11 01:08:37,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 01:08:37,809 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2020-07-11 01:08:37,810 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2020-07-11 01:08:37,811 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 01:08:37,811 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 01:08:37,811 INFO L74 IsIncluded]: Start isIncluded. First operand 77 states. Second operand 77 states. [2020-07-11 01:08:37,812 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 77 states. [2020-07-11 01:08:37,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 01:08:37,819 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2020-07-11 01:08:37,819 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2020-07-11 01:08:37,820 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 01:08:37,820 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 01:08:37,821 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-11 01:08:37,821 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-11 01:08:37,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-11 01:08:37,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2020-07-11 01:08:37,827 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 30 [2020-07-11 01:08:37,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-11 01:08:37,828 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2020-07-11 01:08:37,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-11 01:08:37,828 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 77 states and 83 transitions. [2020-07-11 01:08:37,935 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 83 edges. 83 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 01:08:37,935 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2020-07-11 01:08:37,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-11 01:08:37,937 INFO L414 BasicCegarLoop]: Found error trace [2020-07-11 01:08:37,937 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] [2020-07-11 01:08:37,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-11 01:08:37,938 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-11 01:08:37,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-11 01:08:37,938 INFO L82 PathProgramCache]: Analyzing trace with hash -493967776, now seen corresponding path program 1 times [2020-07-11 01:08:37,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-11 01:08:37,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174140368] [2020-07-11 01:08:37,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-11 01:08:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-11 01:08:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-11 01:08:38,034 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-11 01:08:38,034 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-11 01:08:38,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-11 01:08:38,068 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-11 01:08:38,068 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-11 01:08:38,068 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-11 01:08:38,068 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-11 01:08:38,069 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-11 01:08:38,069 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-11 01:08:38,069 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-11 01:08:38,069 WARN L170 areAnnotationChecker]: L985 has no Hoare annotation [2020-07-11 01:08:38,069 WARN L170 areAnnotationChecker]: L-1-1 has no Hoare annotation [2020-07-11 01:08:38,069 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-11 01:08:38,069 WARN L170 areAnnotationChecker]: L986 has no Hoare annotation [2020-07-11 01:08:38,069 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-11 01:08:38,070 WARN L170 areAnnotationChecker]: L986-1 has no Hoare annotation [2020-07-11 01:08:38,070 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-11 01:08:38,070 WARN L170 areAnnotationChecker]: L987 has no Hoare annotation [2020-07-11 01:08:38,070 WARN L170 areAnnotationChecker]: L987 has no Hoare annotation [2020-07-11 01:08:38,070 WARN L170 areAnnotationChecker]: L987-1 has no Hoare annotation [2020-07-11 01:08:38,070 WARN L170 areAnnotationChecker]: L987-9 has no Hoare annotation [2020-07-11 01:08:38,070 WARN L170 areAnnotationChecker]: L987-2 has no Hoare annotation [2020-07-11 01:08:38,070 WARN L170 areAnnotationChecker]: L987-10 has no Hoare annotation [2020-07-11 01:08:38,071 WARN L170 areAnnotationChecker]: L987-3 has no Hoare annotation [2020-07-11 01:08:38,071 WARN L170 areAnnotationChecker]: L987-11 has no Hoare annotation [2020-07-11 01:08:38,071 WARN L170 areAnnotationChecker]: L987-11 has no Hoare annotation [2020-07-11 01:08:38,071 WARN L170 areAnnotationChecker]: L987-4 has no Hoare annotation [2020-07-11 01:08:38,071 WARN L170 areAnnotationChecker]: L987-12 has no Hoare annotation [2020-07-11 01:08:38,071 WARN L170 areAnnotationChecker]: L987-16 has no Hoare annotation [2020-07-11 01:08:38,071 WARN L170 areAnnotationChecker]: L987-5 has no Hoare annotation [2020-07-11 01:08:38,071 WARN L170 areAnnotationChecker]: L987-13 has no Hoare annotation [2020-07-11 01:08:38,071 WARN L170 areAnnotationChecker]: L987-17 has no Hoare annotation [2020-07-11 01:08:38,072 WARN L170 areAnnotationChecker]: L987-6 has no Hoare annotation [2020-07-11 01:08:38,072 WARN L170 areAnnotationChecker]: L987-14 has no Hoare annotation [2020-07-11 01:08:38,072 WARN L170 areAnnotationChecker]: L987-18 has no Hoare annotation [2020-07-11 01:08:38,072 WARN L170 areAnnotationChecker]: L987-7 has no Hoare annotation [2020-07-11 01:08:38,072 WARN L170 areAnnotationChecker]: L987-19 has no Hoare annotation [2020-07-11 01:08:38,072 WARN L170 areAnnotationChecker]: L990-31 has no Hoare annotation [2020-07-11 01:08:38,072 WARN L170 areAnnotationChecker]: L990-31 has no Hoare annotation [2020-07-11 01:08:38,072 WARN L170 areAnnotationChecker]: L990-32 has no Hoare annotation [2020-07-11 01:08:38,073 WARN L170 areAnnotationChecker]: L990-1 has no Hoare annotation [2020-07-11 01:08:38,073 WARN L170 areAnnotationChecker]: L990-1 has no Hoare annotation [2020-07-11 01:08:38,073 WARN L170 areAnnotationChecker]: L994-2 has no Hoare annotation [2020-07-11 01:08:38,073 WARN L170 areAnnotationChecker]: L994-2 has no Hoare annotation [2020-07-11 01:08:38,073 WARN L170 areAnnotationChecker]: L994-2 has no Hoare annotation [2020-07-11 01:08:38,073 WARN L170 areAnnotationChecker]: L990-2 has no Hoare annotation [2020-07-11 01:08:38,073 WARN L170 areAnnotationChecker]: L990-4 has no Hoare annotation [2020-07-11 01:08:38,073 WARN L170 areAnnotationChecker]: L994-3 has no Hoare annotation [2020-07-11 01:08:38,073 WARN L170 areAnnotationChecker]: L996-16 has no Hoare annotation [2020-07-11 01:08:38,074 WARN L170 areAnnotationChecker]: L996-16 has no Hoare annotation [2020-07-11 01:08:38,074 WARN L170 areAnnotationChecker]: L990-5 has no Hoare annotation [2020-07-11 01:08:38,074 WARN L170 areAnnotationChecker]: L1008 has no Hoare annotation [2020-07-11 01:08:38,074 WARN L170 areAnnotationChecker]: L1008 has no Hoare annotation [2020-07-11 01:08:38,074 WARN L170 areAnnotationChecker]: L1008 has no Hoare annotation [2020-07-11 01:08:38,074 WARN L170 areAnnotationChecker]: L996-1 has no Hoare annotation [2020-07-11 01:08:38,074 WARN L170 areAnnotationChecker]: L996-17 has no Hoare annotation [2020-07-11 01:08:38,074 WARN L170 areAnnotationChecker]: L990-6 has no Hoare annotation [2020-07-11 01:08:38,075 WARN L170 areAnnotationChecker]: L1002-2 has no Hoare annotation [2020-07-11 01:08:38,075 WARN L170 areAnnotationChecker]: L1004 has no Hoare annotation [2020-07-11 01:08:38,075 WARN L170 areAnnotationChecker]: L996-2 has no Hoare annotation [2020-07-11 01:08:38,075 WARN L170 areAnnotationChecker]: L996-2 has no Hoare annotation [2020-07-11 01:08:38,075 WARN L170 areAnnotationChecker]: L997 has no Hoare annotation [2020-07-11 01:08:38,075 WARN L170 areAnnotationChecker]: L990-7 has no Hoare annotation [2020-07-11 01:08:38,075 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-11 01:08:38,075 WARN L170 areAnnotationChecker]: L1005 has no Hoare annotation [2020-07-11 01:08:38,076 WARN L170 areAnnotationChecker]: L996-3 has no Hoare annotation [2020-07-11 01:08:38,076 WARN L170 areAnnotationChecker]: L996-6 has no Hoare annotation [2020-07-11 01:08:38,076 WARN L170 areAnnotationChecker]: L996-6 has no Hoare annotation [2020-07-11 01:08:38,076 WARN L170 areAnnotationChecker]: L997-1 has no Hoare annotation [2020-07-11 01:08:38,076 WARN L170 areAnnotationChecker]: L990-8 has no Hoare annotation [2020-07-11 01:08:38,076 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-11 01:08:38,076 WARN L170 areAnnotationChecker]: L1005-1 has no Hoare annotation [2020-07-11 01:08:38,076 WARN L170 areAnnotationChecker]: L996-4 has no Hoare annotation [2020-07-11 01:08:38,077 WARN L170 areAnnotationChecker]: L996-7 has no Hoare annotation [2020-07-11 01:08:38,077 WARN L170 areAnnotationChecker]: L996-12 has no Hoare annotation [2020-07-11 01:08:38,077 WARN L170 areAnnotationChecker]: L990-9 has no Hoare annotation [2020-07-11 01:08:38,077 WARN L170 areAnnotationChecker]: L1005-2 has no Hoare annotation [2020-07-11 01:08:38,077 WARN L170 areAnnotationChecker]: L996-8 has no Hoare annotation [2020-07-11 01:08:38,077 WARN L170 areAnnotationChecker]: L996-13 has no Hoare annotation [2020-07-11 01:08:38,077 WARN L170 areAnnotationChecker]: L990-10 has no Hoare annotation [2020-07-11 01:08:38,077 WARN L170 areAnnotationChecker]: L1006 has no Hoare annotation [2020-07-11 01:08:38,078 WARN L170 areAnnotationChecker]: L996-9 has no Hoare annotation [2020-07-11 01:08:38,078 WARN L170 areAnnotationChecker]: L996-14 has no Hoare annotation [2020-07-11 01:08:38,078 WARN L170 areAnnotationChecker]: L990-11 has no Hoare annotation [2020-07-11 01:08:38,078 WARN L170 areAnnotationChecker]: L1006-1 has no Hoare annotation [2020-07-11 01:08:38,078 WARN L170 areAnnotationChecker]: L1006-1 has no Hoare annotation [2020-07-11 01:08:38,078 WARN L170 areAnnotationChecker]: L996-10 has no Hoare annotation [2020-07-11 01:08:38,078 WARN L170 areAnnotationChecker]: L996-10 has no Hoare annotation [2020-07-11 01:08:38,078 WARN L170 areAnnotationChecker]: L996-15 has no Hoare annotation [2020-07-11 01:08:38,079 WARN L170 areAnnotationChecker]: L996-15 has no Hoare annotation [2020-07-11 01:08:38,079 WARN L170 areAnnotationChecker]: L990-12 has no Hoare annotation [2020-07-11 01:08:38,079 WARN L170 areAnnotationChecker]: L990-12 has no Hoare annotation [2020-07-11 01:08:38,079 WARN L170 areAnnotationChecker]: L1006-2 has no Hoare annotation [2020-07-11 01:08:38,079 WARN L170 areAnnotationChecker]: L1006-4 has no Hoare annotation [2020-07-11 01:08:38,079 WARN L170 areAnnotationChecker]: L990-13 has no Hoare annotation [2020-07-11 01:08:38,079 WARN L170 areAnnotationChecker]: L990-21 has no Hoare annotation [2020-07-11 01:08:38,079 WARN L170 areAnnotationChecker]: L1007 has no Hoare annotation [2020-07-11 01:08:38,080 WARN L170 areAnnotationChecker]: L1006-5 has no Hoare annotation [2020-07-11 01:08:38,080 WARN L170 areAnnotationChecker]: L990-14 has no Hoare annotation [2020-07-11 01:08:38,080 WARN L170 areAnnotationChecker]: L990-22 has no Hoare annotation [2020-07-11 01:08:38,080 WARN L170 areAnnotationChecker]: L1007-1 has no Hoare annotation [2020-07-11 01:08:38,080 WARN L170 areAnnotationChecker]: L990-15 has no Hoare annotation [2020-07-11 01:08:38,080 WARN L170 areAnnotationChecker]: L990-23 has no Hoare annotation [2020-07-11 01:08:38,080 WARN L170 areAnnotationChecker]: L990-23 has no Hoare annotation [2020-07-11 01:08:38,080 WARN L170 areAnnotationChecker]: L1007-2 has no Hoare annotation [2020-07-11 01:08:38,081 WARN L170 areAnnotationChecker]: L990-16 has no Hoare annotation [2020-07-11 01:08:38,081 WARN L170 areAnnotationChecker]: L990-24 has no Hoare annotation [2020-07-11 01:08:38,081 WARN L170 areAnnotationChecker]: L990-28 has no Hoare annotation [2020-07-11 01:08:38,081 WARN L170 areAnnotationChecker]: L990-17 has no Hoare annotation [2020-07-11 01:08:38,081 WARN L170 areAnnotationChecker]: L990-25 has no Hoare annotation [2020-07-11 01:08:38,081 WARN L170 areAnnotationChecker]: L990-29 has no Hoare annotation [2020-07-11 01:08:38,081 WARN L170 areAnnotationChecker]: L990-18 has no Hoare annotation [2020-07-11 01:08:38,081 WARN L170 areAnnotationChecker]: L990-26 has no Hoare annotation [2020-07-11 01:08:38,081 WARN L170 areAnnotationChecker]: L990-30 has no Hoare annotation [2020-07-11 01:08:38,082 WARN L170 areAnnotationChecker]: L990-19 has no Hoare annotation [2020-07-11 01:08:38,082 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-11 01:08:38,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.07 01:08:38 BoogieIcfgContainer [2020-07-11 01:08:38,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-11 01:08:38,088 INFO L168 Benchmark]: Toolchain (without parser) took 2878.66 ms. Allocated memory was 144.7 MB in the beginning and 248.5 MB in the end (delta: 103.8 MB). Free memory was 101.7 MB in the beginning and 188.8 MB in the end (delta: -87.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-07-11 01:08:38,089 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 144.7 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-11 01:08:38,090 INFO L168 Benchmark]: CACSL2BoogieTranslator took 609.64 ms. Allocated memory was 144.7 MB in the beginning and 203.4 MB in the end (delta: 58.7 MB). Free memory was 101.5 MB in the beginning and 170.6 MB in the end (delta: -69.1 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-07-11 01:08:38,091 INFO L168 Benchmark]: Boogie Preprocessor took 73.46 ms. Allocated memory is still 203.4 MB. Free memory was 170.6 MB in the beginning and 166.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-07-11 01:08:38,092 INFO L168 Benchmark]: RCFGBuilder took 740.03 ms. Allocated memory is still 203.4 MB. Free memory was 166.2 MB in the beginning and 97.0 MB in the end (delta: 69.2 MB). Peak memory consumption was 69.2 MB. Max. memory is 7.1 GB. [2020-07-11 01:08:38,093 INFO L168 Benchmark]: TraceAbstraction took 1449.94 ms. Allocated memory was 203.4 MB in the beginning and 248.5 MB in the end (delta: 45.1 MB). Free memory was 96.3 MB in the beginning and 188.8 MB in the end (delta: -92.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-11 01:08:38,096 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 144.7 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 609.64 ms. Allocated memory was 144.7 MB in the beginning and 203.4 MB in the end (delta: 58.7 MB). Free memory was 101.5 MB in the beginning and 170.6 MB in the end (delta: -69.1 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.46 ms. Allocated memory is still 203.4 MB. Free memory was 170.6 MB in the beginning and 166.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 740.03 ms. Allocated memory is still 203.4 MB. Free memory was 166.2 MB in the beginning and 97.0 MB in the end (delta: 69.2 MB). Peak memory consumption was 69.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1449.94 ms. Allocated memory was 203.4 MB in the beginning and 248.5 MB in the end (delta: 45.1 MB). Free memory was 96.3 MB in the beginning and 188.8 MB in the end (delta: -92.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 996]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L985] SLL* head = malloc(sizeof(SLL)); VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L986] head->next = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L987] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L987] COND TRUE __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L987] head->data = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L987] head->opt = head VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L988] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L990] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L993] x = head VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L994] COND TRUE x != ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L996] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L996] EXPR x->data == 2 && x->opt == x VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1, x->data == 2 && x->opt == x=0] [L996] COND TRUE !(x->data == 2 && x->opt == x) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1, x->data == 2 && x->opt == x=0] [L996] __VERIFIER_error() VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 96 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 103 SDtfs, 0 SDslu, 5 SDs, 0 SdLazy, 98 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 1102 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...