/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-optional-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:46:14,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:46:14,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:46:14,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:46:14,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:46:14,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:46:14,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:46:14,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:46:14,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:46:14,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:46:14,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:46:14,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:46:14,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:46:14,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:46:14,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:46:14,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:46:14,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:46:14,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:46:14,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:46:14,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:46:14,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:46:14,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:46:14,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:46:14,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:46:14,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-19 17:46:14,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-19 17:46:14,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-19 17:46:14,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-19 17:46:14,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-19 17:46:14,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-19 17:46:14,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-19 17:46:14,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-19 17:46:14,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-19 17:46:14,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-19 17:46:14,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-19 17:46:14,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-19 17:46:14,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-19 17:46:14,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-19 17:46:14,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:46:14,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:46:14,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:46:14,953 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-19 17:46:15,004 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:46:15,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:46:15,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:46:15,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:46:15,010 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:46:15,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:46:15,010 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:46:15,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:46:15,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:46:15,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:46:15,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:46:15,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:46:15,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:46:15,013 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:46:15,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:46:15,013 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:46:15,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:46:15,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:46:15,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:46:15,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:46:15,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:46:15,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:46:15,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:46:15,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:46:15,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:46:15,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:46:15,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:46:15,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:46:15,016 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:46:15,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:46:15,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:46:15,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:46:15,537 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:46:15,538 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:46:15,539 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-optional-2.i [2021-02-19 17:46:15,618 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86e632109/890d3ce732d54e8d9817c3e8e1325aeb/FLAG25b451047 [2021-02-19 17:46:16,408 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:46:16,408 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-optional-2.i [2021-02-19 17:46:16,428 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86e632109/890d3ce732d54e8d9817c3e8e1325aeb/FLAG25b451047 [2021-02-19 17:46:16,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86e632109/890d3ce732d54e8d9817c3e8e1325aeb [2021-02-19 17:46:16,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:46:16,685 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:46:16,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:46:16,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:46:16,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:46:16,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:46:16" (1/1) ... [2021-02-19 17:46:16,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70eec15c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:46:16, skipping insertion in model container [2021-02-19 17:46:16,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:46:16" (1/1) ... [2021-02-19 17:46:16,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:46:16,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:46:17,183 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-optional-2.i[22706,22719] [2021-02-19 17:46:17,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:46:17,222 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:46:17,305 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-optional-2.i[22706,22719] [2021-02-19 17:46:17,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:46:17,391 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:46:17,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:46:17 WrapperNode [2021-02-19 17:46:17,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:46:17,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:46:17,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:46:17,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:46:17,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:46:17" (1/1) ... [2021-02-19 17:46:17,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:46:17" (1/1) ... [2021-02-19 17:46:17,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:46:17" (1/1) ... [2021-02-19 17:46:17,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:46:17" (1/1) ... [2021-02-19 17:46:17,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:46:17" (1/1) ... [2021-02-19 17:46:17,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:46:17" (1/1) ... [2021-02-19 17:46:17,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:46:17" (1/1) ... [2021-02-19 17:46:17,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:46:17,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:46:17,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:46:17,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:46:17,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:46:17" (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 [2021-02-19 17:46:17,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:46:17,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:46:17,686 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:46:17,686 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:46:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-19 17:46:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-19 17:46:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-19 17:46:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-19 17:46:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-19 17:46:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-19 17:46:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-19 17:46:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-19 17:46:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-19 17:46:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-19 17:46:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-19 17:46:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-19 17:46:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-19 17:46:17,689 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-19 17:46:17,689 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-19 17:46:17,689 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-19 17:46:17,689 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-19 17:46:17,689 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-19 17:46:17,689 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-19 17:46:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-19 17:46:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-19 17:46:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-19 17:46:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-19 17:46:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-19 17:46:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-19 17:46:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-19 17:46:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-19 17:46:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-19 17:46:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-19 17:46:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-19 17:46:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-19 17:46:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-19 17:46:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-19 17:46:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-19 17:46:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-19 17:46:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-19 17:46:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-19 17:46:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-19 17:46:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-19 17:46:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-19 17:46:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-19 17:46:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-19 17:46:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-19 17:46:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-19 17:46:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-19 17:46:17,694 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-19 17:46:17,694 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-19 17:46:17,694 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-19 17:46:17,694 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-19 17:46:17,694 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-19 17:46:17,694 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-19 17:46:17,695 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-19 17:46:17,695 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-19 17:46:17,695 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-19 17:46:17,695 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-19 17:46:17,695 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-19 17:46:17,695 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-19 17:46:17,696 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-19 17:46:17,696 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-19 17:46:17,696 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:46:17,696 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-19 17:46:17,696 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-19 17:46:17,696 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-19 17:46:17,697 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-19 17:46:17,697 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-19 17:46:17,697 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-19 17:46:17,697 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-19 17:46:17,697 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-19 17:46:17,697 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-19 17:46:17,698 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-19 17:46:17,698 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-19 17:46:17,698 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-19 17:46:17,698 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-19 17:46:17,698 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-19 17:46:17,698 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-19 17:46:17,698 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-19 17:46:17,699 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-19 17:46:17,699 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-19 17:46:17,699 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-19 17:46:17,699 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-19 17:46:17,699 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-19 17:46:17,700 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-19 17:46:17,700 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-19 17:46:17,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-19 17:46:17,700 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-19 17:46:17,700 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-19 17:46:17,700 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-19 17:46:17,701 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-19 17:46:17,701 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-19 17:46:17,701 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-19 17:46:17,701 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-19 17:46:17,701 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-19 17:46:17,701 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-19 17:46:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-19 17:46:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-19 17:46:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-19 17:46:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-19 17:46:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-19 17:46:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-19 17:46:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-19 17:46:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-19 17:46:17,703 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-19 17:46:17,703 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-19 17:46:17,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-19 17:46:17,703 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:46:17,703 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-19 17:46:17,703 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-19 17:46:17,704 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:46:17,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:46:17,704 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:46:17,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-19 17:46:17,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-19 17:46:17,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:46:17,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-19 17:46:17,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:46:17,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:46:17,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:46:17,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:46:17,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:46:18,436 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:46:18,437 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-19 17:46:18,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:46:18 BoogieIcfgContainer [2021-02-19 17:46:18,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:46:18,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:46:18,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:46:18,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:46:18,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:46:16" (1/3) ... [2021-02-19 17:46:18,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d203d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:46:18, skipping insertion in model container [2021-02-19 17:46:18,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:46:17" (2/3) ... [2021-02-19 17:46:18,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d203d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:46:18, skipping insertion in model container [2021-02-19 17:46:18,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:46:18" (3/3) ... [2021-02-19 17:46:18,458 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-optional-2.i [2021-02-19 17:46:18,472 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:46:18,484 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:46:18,526 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:46:18,562 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:46:18,562 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:46:18,562 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:46:18,563 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:46:18,563 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:46:18,563 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:46:18,563 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:46:18,563 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:46:18,584 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2021-02-19 17:46:18,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-02-19 17:46:18,592 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:46:18,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:46:18,594 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:46:18,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:46:18,601 INFO L82 PathProgramCache]: Analyzing trace with hash 294516056, now seen corresponding path program 1 times [2021-02-19 17:46:18,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:46:18,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739718169] [2021-02-19 17:46:18,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:46:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:46:18,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:46:18,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:46:18,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:46:18,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:46:18,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:46:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:46:18,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:46:18,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:46:18,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:46:18,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739718169] [2021-02-19 17:46:18,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:46:18,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 17:46:18,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969441475] [2021-02-19 17:46:18,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 17:46:18,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:46:18,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 17:46:18,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 17:46:18,989 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2021-02-19 17:46:19,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:46:19,189 INFO L93 Difference]: Finished difference Result 49 states and 71 transitions. [2021-02-19 17:46:19,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 17:46:19,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2021-02-19 17:46:19,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:46:19,203 INFO L225 Difference]: With dead ends: 49 [2021-02-19 17:46:19,203 INFO L226 Difference]: Without dead ends: 22 [2021-02-19 17:46:19,207 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 [2021-02-19 17:46:19,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-02-19 17:46:19,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-02-19 17:46:19,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-02-19 17:46:19,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2021-02-19 17:46:19,255 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 15 [2021-02-19 17:46:19,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:46:19,256 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2021-02-19 17:46:19,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-19 17:46:19,256 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2021-02-19 17:46:19,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-02-19 17:46:19,257 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:46:19,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:46:19,257 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:46:19,258 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:46:19,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:46:19,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1065045589, now seen corresponding path program 1 times [2021-02-19 17:46:19,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:46:19,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764642860] [2021-02-19 17:46:19,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:46:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:46:19,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:46:19,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:46:19,393 WARN L141 QuantifierPusher]: treesize reduction 4, result has 60.0 percent of original size [2021-02-19 17:46:19,394 WARN L147 QuantifierPusher]: treesize reduction 4, result has 60.0 percent of original size 6 [2021-02-19 17:46:19,403 WARN L141 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-02-19 17:46:19,405 WARN L147 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size 22 [2021-02-19 17:46:19,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:46:19,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-19 17:46:19,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:46:19,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:46:19,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:46:19,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:46:19,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:46:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:46:19,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:46:19,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:46:19,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:46:19,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764642860] [2021-02-19 17:46:19,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:46:19,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-19 17:46:19,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658993196] [2021-02-19 17:46:19,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-19 17:46:19,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:46:19,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-19 17:46:19,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-19 17:46:19,566 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand 7 states. [2021-02-19 17:46:19,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:46:19,886 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2021-02-19 17:46:19,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-19 17:46:19,887 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2021-02-19 17:46:19,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:46:19,889 INFO L225 Difference]: With dead ends: 50 [2021-02-19 17:46:19,889 INFO L226 Difference]: Without dead ends: 42 [2021-02-19 17:46:19,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-02-19 17:46:19,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-02-19 17:46:19,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 29. [2021-02-19 17:46:19,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-02-19 17:46:19,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2021-02-19 17:46:19,901 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 16 [2021-02-19 17:46:19,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:46:19,901 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2021-02-19 17:46:19,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-19 17:46:19,902 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2021-02-19 17:46:19,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-02-19 17:46:19,902 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:46:19,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:46:19,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 17:46:19,903 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:46:19,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:46:19,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1065043667, now seen corresponding path program 1 times [2021-02-19 17:46:19,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:46:19,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727238328] [2021-02-19 17:46:19,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:46:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:46:19,964 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:46:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:46:20,009 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:46:20,065 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:46:20,066 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:46:20,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-19 17:46:20,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:46:20 BoogieIcfgContainer [2021-02-19 17:46:20,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:46:20,109 INFO L168 Benchmark]: Toolchain (without parser) took 3431.99 ms. Allocated memory was 153.1 MB in the beginning and 201.3 MB in the end (delta: 48.2 MB). Free memory was 127.5 MB in the beginning and 143.8 MB in the end (delta: -16.3 MB). Peak memory consumption was 32.9 MB. Max. memory is 8.0 GB. [2021-02-19 17:46:20,110 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 153.1 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:46:20,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.82 ms. Allocated memory is still 153.1 MB. Free memory was 126.3 MB in the beginning and 104.2 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-19 17:46:20,111 INFO L168 Benchmark]: Boogie Preprocessor took 141.68 ms. Allocated memory is still 153.1 MB. Free memory was 104.1 MB in the beginning and 101.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-19 17:46:20,112 INFO L168 Benchmark]: RCFGBuilder took 902.86 ms. Allocated memory is still 153.1 MB. Free memory was 101.3 MB in the beginning and 92.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 8.0 GB. [2021-02-19 17:46:20,113 INFO L168 Benchmark]: TraceAbstraction took 1662.89 ms. Allocated memory was 153.1 MB in the beginning and 201.3 MB in the end (delta: 48.2 MB). Free memory was 91.5 MB in the beginning and 143.8 MB in the end (delta: -52.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:46:20,117 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 153.1 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 705.82 ms. Allocated memory is still 153.1 MB. Free memory was 126.3 MB in the beginning and 104.2 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 141.68 ms. Allocated memory is still 153.1 MB. Free memory was 104.1 MB in the beginning and 101.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 902.86 ms. Allocated memory is still 153.1 MB. Free memory was 101.3 MB in the beginning and 92.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1662.89 ms. Allocated memory was 153.1 MB in the beginning and 201.3 MB in the end (delta: 48.2 MB). Free memory was 91.5 MB in the beginning and 143.8 MB in the end (delta: -52.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1009]: a call to reach_error is reachable a call to reach_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 TRUE __VERIFIER_nondet_int() [L1000] head->data = 2 [L1000] head->opt = malloc(sizeof(SLL)) [L1000] EXPR head->opt [L1000] head->opt->next = ((void*)0) [L1001] SLL* x = head; VAL [head={6:0}, malloc(sizeof(SLL))={6:0}, malloc(sizeof(SLL))={5:0}, x={6:0}] [L1003] COND FALSE !(__VERIFIER_nondet_int()) [L1006] x = head VAL [head={6:0}, malloc(sizeof(SLL))={6:0}, malloc(sizeof(SLL))={5:0}, x={6:0}] [L1007] COND TRUE x != ((void*)0) VAL [head={6:0}, malloc(sizeof(SLL))={6:0}, malloc(sizeof(SLL))={5:0}, x={6:0}] [L1009] EXPR x->data [L1009] EXPR x->data == 2 && x->opt == x [L1009] EXPR x->opt [L1009] EXPR x->data == 2 && x->opt == x VAL [head={6:0}, malloc(sizeof(SLL))={6:0}, malloc(sizeof(SLL))={5:0}, x={6:0}, x->data=2, x->data == 2 && x->opt == x=0, x->opt={5:0}] [L1009] COND TRUE !(x->data == 2 && x->opt == x) [L1009] reach_error() VAL [head={6:0}, malloc(sizeof(SLL))={6:0}, malloc(sizeof(SLL))={5:0}, x={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 53 SDslu, 53 SDs, 0 SdLazy, 118 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 2 MinimizatonAttempts, 13 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 2332 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...