/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-optional-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:55:47,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:55:47,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:55:47,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:55:47,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:55:47,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:55:47,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:55:47,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:55:47,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:55:47,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:55:47,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:55:47,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:55:47,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:55:47,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:55:47,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:55:47,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:55:47,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:55:47,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:55:47,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:55:47,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:55:47,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:55:47,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:55:47,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:55:47,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:55:47,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 00:55:47,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 00:55:47,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 00:55:47,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 00:55:47,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 00:55:47,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 00:55:47,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 00:55:47,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 00:55:47,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 00:55:47,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 00:55:47,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 00:55:47,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 00:55:47,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 00:55:47,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 00:55:47,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:55:47,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:55:47,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:55:47,347 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 00:55:47,368 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:55:47,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:55:47,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:55:47,374 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:55:47,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:55:47,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:55:47,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:55:47,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:55:47,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:55:47,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:55:47,376 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:55:47,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:55:47,377 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:55:47,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:55:47,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:55:47,378 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:55:47,378 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:55:47,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:55:47,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:55:47,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:55:47,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:55:47,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:55:47,379 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:55:47,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:55:47,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:55:47,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:55:47,909 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:55:47,910 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:55:47,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-optional-2.i [2020-11-07 00:55:48,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be3a9348c/9b046c80c2dd46a5bfa1302ad9dd4405/FLAGabebe1418 [2020-11-07 00:55:48,923 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:55:48,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-optional-2.i [2020-11-07 00:55:48,948 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be3a9348c/9b046c80c2dd46a5bfa1302ad9dd4405/FLAGabebe1418 [2020-11-07 00:55:49,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be3a9348c/9b046c80c2dd46a5bfa1302ad9dd4405 [2020-11-07 00:55:49,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:55:49,146 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:55:49,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:55:49,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:55:49,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:55:49,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:49" (1/1) ... [2020-11-07 00:55:49,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f649f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:49, skipping insertion in model container [2020-11-07 00:55:49,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:49" (1/1) ... [2020-11-07 00:55:49,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:55:49,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:55:49,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:55:49,551 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:55:49,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:55:49,667 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:55:49,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:49 WrapperNode [2020-11-07 00:55:49,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:55:49,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:55:49,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:55:49,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:55:49,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:49" (1/1) ... [2020-11-07 00:55:49,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:49" (1/1) ... [2020-11-07 00:55:49,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:49" (1/1) ... [2020-11-07 00:55:49,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:49" (1/1) ... [2020-11-07 00:55:49,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:49" (1/1) ... [2020-11-07 00:55:49,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:49" (1/1) ... [2020-11-07 00:55:49,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:49" (1/1) ... [2020-11-07 00:55:49,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:55:49,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:55:49,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:55:49,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:55:49,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:49" (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 00:55:49,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:55:49,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:55:49,848 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:55:49,848 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:55:49,848 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-07 00:55:49,849 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-07 00:55:49,849 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-07 00:55:49,849 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-07 00:55:49,849 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-07 00:55:49,849 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-07 00:55:49,849 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-07 00:55:49,849 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-07 00:55:49,850 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-07 00:55:49,850 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-07 00:55:49,850 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-07 00:55:49,850 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-07 00:55:49,850 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-07 00:55:49,850 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-07 00:55:49,851 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-07 00:55:49,851 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-07 00:55:49,851 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-07 00:55:49,851 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-07 00:55:49,851 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-07 00:55:49,851 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-07 00:55:49,852 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-07 00:55:49,852 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-07 00:55:49,852 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-07 00:55:49,852 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-07 00:55:49,852 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-07 00:55:49,852 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-07 00:55:49,853 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-07 00:55:49,853 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-07 00:55:49,853 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-07 00:55:49,853 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-07 00:55:49,853 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-07 00:55:49,853 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-07 00:55:49,854 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-07 00:55:49,854 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-07 00:55:49,854 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-07 00:55:49,854 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-07 00:55:49,854 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-07 00:55:49,854 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-07 00:55:49,854 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-07 00:55:49,854 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-07 00:55:49,855 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-07 00:55:49,855 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-07 00:55:49,855 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-07 00:55:49,855 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-07 00:55:49,855 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-07 00:55:49,855 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-07 00:55:49,855 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-07 00:55:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-07 00:55:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-07 00:55:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-07 00:55:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 00:55:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-07 00:55:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-07 00:55:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-07 00:55:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-07 00:55:49,857 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-07 00:55:49,857 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-07 00:55:49,857 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-07 00:55:49,857 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-07 00:55:49,857 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:55:49,857 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-07 00:55:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-07 00:55:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-07 00:55:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 00:55:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-07 00:55:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-07 00:55:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-07 00:55:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-07 00:55:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-07 00:55:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-07 00:55:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-07 00:55:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-07 00:55:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-07 00:55:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-07 00:55:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-07 00:55:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-07 00:55:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-07 00:55:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-07 00:55:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-07 00:55:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-07 00:55:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-07 00:55:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-07 00:55:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-07 00:55:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-07 00:55:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-07 00:55:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-07 00:55:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-07 00:55:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-07 00:55:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-07 00:55:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-07 00:55:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-07 00:55:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-07 00:55:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-07 00:55:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-07 00:55:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-07 00:55:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-07 00:55:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-07 00:55:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-07 00:55:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-07 00:55:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-07 00:55:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-07 00:55:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-07 00:55:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-07 00:55:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 00:55:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:55:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 00:55:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 00:55:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:55:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:55:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:55:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 00:55:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-07 00:55:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:55:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-07 00:55:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:55:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:55:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:55:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:55:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:55:50,941 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:55:50,942 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-07 00:55:50,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:55:50 BoogieIcfgContainer [2020-11-07 00:55:50,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:55:50,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:55:50,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:55:50,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:55:50,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:55:49" (1/3) ... [2020-11-07 00:55:50,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b94692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:55:50, skipping insertion in model container [2020-11-07 00:55:50,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:49" (2/3) ... [2020-11-07 00:55:50,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b94692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:55:50, skipping insertion in model container [2020-11-07 00:55:50,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:55:50" (3/3) ... [2020-11-07 00:55:50,961 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-optional-2.i [2020-11-07 00:55:50,983 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:55:50,989 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:55:51,005 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:55:51,048 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:55:51,049 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:55:51,049 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:55:51,049 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:55:51,049 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:55:51,051 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:55:51,052 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:55:51,055 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:55:51,081 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2020-11-07 00:55:51,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-07 00:55:51,109 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:55:51,118 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 00:55:51,119 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:55:51,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:55:51,134 INFO L82 PathProgramCache]: Analyzing trace with hash 273268524, now seen corresponding path program 1 times [2020-11-07 00:55:51,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:55:51,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182815754] [2020-11-07 00:55:51,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:55:51,261 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:55:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:55:51,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:55:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:55:51,566 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 00:55:51,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182815754] [2020-11-07 00:55:51,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:55:51,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 00:55:51,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995183856] [2020-11-07 00:55:51,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 00:55:51,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:55:51,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 00:55:51,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 00:55:51,607 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 3 states. [2020-11-07 00:55:52,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:55:52,071 INFO L93 Difference]: Finished difference Result 151 states and 176 transitions. [2020-11-07 00:55:52,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 00:55:52,073 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-11-07 00:55:52,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:55:52,084 INFO L225 Difference]: With dead ends: 151 [2020-11-07 00:55:52,084 INFO L226 Difference]: Without dead ends: 87 [2020-11-07 00:55:52,088 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 00:55:52,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-07 00:55:52,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-11-07 00:55:52,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-07 00:55:52,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2020-11-07 00:55:52,143 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 37 [2020-11-07 00:55:52,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:55:52,144 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2020-11-07 00:55:52,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 00:55:52,147 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2020-11-07 00:55:52,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 00:55:52,149 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:55:52,149 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, 1, 1] [2020-11-07 00:55:52,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:55:52,150 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:55:52,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:55:52,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1329457824, now seen corresponding path program 1 times [2020-11-07 00:55:52,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:55:52,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923701866] [2020-11-07 00:55:52,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:55:52,157 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:55:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:55:52,202 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:55:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:55:52,248 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:55:52,292 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:55:52,292 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:55:52,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:55:52,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:55:52 BoogieIcfgContainer [2020-11-07 00:55:52,314 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:55:52,317 INFO L168 Benchmark]: Toolchain (without parser) took 3175.85 ms. Allocated memory is still 155.2 MB. Free memory was 130.5 MB in the beginning and 89.3 MB in the end (delta: 41.2 MB). Peak memory consumption was 41.9 MB. Max. memory is 8.0 GB. [2020-11-07 00:55:52,318 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 155.2 MB. Free memory is still 129.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:55:52,319 INFO L168 Benchmark]: CACSL2BoogieTranslator took 515.86 ms. Allocated memory is still 155.2 MB. Free memory was 129.8 MB in the beginning and 107.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:55:52,320 INFO L168 Benchmark]: Boogie Preprocessor took 85.77 ms. Allocated memory is still 155.2 MB. Free memory was 107.8 MB in the beginning and 137.3 MB in the end (delta: -29.5 MB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. [2020-11-07 00:55:52,321 INFO L168 Benchmark]: RCFGBuilder took 1190.13 ms. Allocated memory is still 155.2 MB. Free memory was 136.8 MB in the beginning and 86.4 MB in the end (delta: 50.3 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. [2020-11-07 00:55:52,322 INFO L168 Benchmark]: TraceAbstraction took 1364.78 ms. Allocated memory is still 155.2 MB. Free memory was 85.9 MB in the beginning and 89.3 MB in the end (delta: -3.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:55:52,325 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 155.2 MB. Free memory is still 129.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 515.86 ms. Allocated memory is still 155.2 MB. Free memory was 129.8 MB in the beginning and 107.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 85.77 ms. Allocated memory is still 155.2 MB. Free memory was 107.8 MB in the beginning and 137.3 MB in the end (delta: -29.5 MB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1190.13 ms. Allocated memory is still 155.2 MB. Free memory was 136.8 MB in the beginning and 86.4 MB in the end (delta: 50.3 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1364.78 ms. Allocated memory is still 155.2 MB. Free memory was 85.9 MB in the beginning and 89.3 MB in the end (delta: -3.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 985]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = ((void*)0) [L999] head->prev = ((void*)0) [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1000] COND TRUE __VERIFIER_nondet_int() [L1000] head->data = 1 [L1000] head->opt = head [L1001] SLL* x = head; [L1003] COND FALSE !(__VERIFIER_nondet_int()) [L1006] x = head [L1007] COND TRUE x != ((void*)0) [L1009] EXPR x->data [L1009] EXPR x->data == 2 && x->opt == x [L1009] COND TRUE !(x->data == 2 && x->opt == x) [L1009] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "dll-optional-2.c", 16, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 110 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 2 SDslu, 5 SDs, 0 SdLazy, 105 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s 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=110occurred 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: No data available, 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...