/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-token-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:32:10,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:32:10,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:32:10,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:32:10,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:32:10,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:32:10,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:32:10,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:32:10,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:32:10,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:32:10,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:32:10,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:32:10,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:32:10,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:32:10,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:32:10,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:32:10,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:32:10,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:32:10,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:32:10,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:32:10,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:32:10,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:32:10,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:32:10,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:32:10,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 22:32:10,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 22:32:10,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 22:32:10,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 22:32:10,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 22:32:10,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 22:32:10,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 22:32:10,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 22:32:10,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 22:32:10,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 22:32:10,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 22:32:10,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 22:32:10,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 22:32:10,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 22:32:10,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:32:10,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:32:10,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:32:10,879 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 [2020-07-17 22:32:10,893 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:32:10,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:32:10,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:32:10,895 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:32:10,895 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:32:10,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:32:10,896 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:32:10,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:32:10,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:32:10,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:32:10,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:32:10,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:32:10,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:32:10,897 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:32:10,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:32:10,897 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:32:10,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:32:10,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:32:10,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:32:10,898 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:32:10,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:32:10,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:32:10,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:32:10,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:32:10,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:32:10,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:32:10,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:32:10,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:32:10,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:32:10,900 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:32:11,187 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:32:11,201 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:32:11,205 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:32:11,206 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:32:11,207 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:32:11,208 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-token-1.i [2020-07-17 22:32:11,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dacc4cbe/6aa5df447e1e47e9bf65f402df60aa9a/FLAG3f93375d9 [2020-07-17 22:32:11,837 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:32:11,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-token-1.i [2020-07-17 22:32:11,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dacc4cbe/6aa5df447e1e47e9bf65f402df60aa9a/FLAG3f93375d9 [2020-07-17 22:32:12,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dacc4cbe/6aa5df447e1e47e9bf65f402df60aa9a [2020-07-17 22:32:12,133 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:32:12,136 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:32:12,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:32:12,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:32:12,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:32:12,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:32:12" (1/1) ... [2020-07-17 22:32:12,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e526ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:32:12, skipping insertion in model container [2020-07-17 22:32:12,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:32:12" (1/1) ... [2020-07-17 22:32:12,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:32:12,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:32:12,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:32:12,704 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:32:12,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:32:12,840 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:32:12,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:32:12 WrapperNode [2020-07-17 22:32:12,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:32:12,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:32:12,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:32:12,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:32:12,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:32:12" (1/1) ... [2020-07-17 22:32:12,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:32:12" (1/1) ... [2020-07-17 22:32:12,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:32:12" (1/1) ... [2020-07-17 22:32:12,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:32:12" (1/1) ... [2020-07-17 22:32:12,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:32:12" (1/1) ... [2020-07-17 22:32:12,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:32:12" (1/1) ... [2020-07-17 22:32:12,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:32:12" (1/1) ... [2020-07-17 22:32:12,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:32:12,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:32:12,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:32:12,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:32:12,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:32:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:32:13,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:32:13,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:32:13,004 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:32:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-17 22:32:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-17 22:32:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-17 22:32:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-17 22:32:13,005 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-17 22:32:13,005 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-17 22:32:13,005 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-17 22:32:13,005 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-17 22:32:13,005 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-17 22:32:13,005 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-17 22:32:13,006 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-17 22:32:13,006 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-17 22:32:13,006 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-17 22:32:13,006 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-17 22:32:13,006 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-17 22:32:13,006 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-17 22:32:13,007 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-17 22:32:13,007 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-17 22:32:13,007 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-17 22:32:13,008 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-17 22:32:13,008 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-17 22:32:13,008 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-17 22:32:13,009 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-17 22:32:13,009 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-17 22:32:13,009 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-17 22:32:13,009 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-17 22:32:13,009 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-17 22:32:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-17 22:32:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-17 22:32:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-17 22:32:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-17 22:32:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-17 22:32:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-17 22:32:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-17 22:32:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-17 22:32:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-17 22:32:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-17 22:32:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-17 22:32:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-17 22:32:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-17 22:32:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-17 22:32:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-17 22:32:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-17 22:32:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-17 22:32:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-17 22:32:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-17 22:32:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-17 22:32:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-17 22:32:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-17 22:32:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-17 22:32:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 22:32:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-17 22:32:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-17 22:32:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 22:32:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-17 22:32:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-17 22:32:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-17 22:32:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-17 22:32:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-17 22:32:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 22:32:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-17 22:32:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-17 22:32:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-17 22:32:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-17 22:32:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-17 22:32:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-17 22:32:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-17 22:32:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-17 22:32:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-17 22:32:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-17 22:32:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-17 22:32:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-17 22:32:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-17 22:32:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-17 22:32:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-17 22:32:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-17 22:32:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-17 22:32:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-17 22:32:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-17 22:32:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-17 22:32:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-17 22:32:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-17 22:32:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-17 22:32:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-17 22:32:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-17 22:32:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-17 22:32:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-17 22:32:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-17 22:32:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-17 22:32:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-17 22:32:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-17 22:32:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-17 22:32:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-17 22:32:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-17 22:32:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-17 22:32:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-17 22:32:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-17 22:32:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-17 22:32:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-17 22:32:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-17 22:32:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-17 22:32:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-17 22:32:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-17 22:32:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 22:32:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:32:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:32:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 22:32:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 22:32:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 22:32:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 22:32:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 22:32:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 22:32:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:32:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:32:13,682 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:32:13,683 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-07-17 22:32:13,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:32:13 BoogieIcfgContainer [2020-07-17 22:32:13,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:32:13,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:32:13,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:32:13,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:32:13,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:32:12" (1/3) ... [2020-07-17 22:32:13,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5624ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:32:13, skipping insertion in model container [2020-07-17 22:32:13,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:32:12" (2/3) ... [2020-07-17 22:32:13,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5624ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:32:13, skipping insertion in model container [2020-07-17 22:32:13,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:32:13" (3/3) ... [2020-07-17 22:32:13,697 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-token-1.i [2020-07-17 22:32:13,710 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:32:13,719 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-07-17 22:32:13,736 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-07-17 22:32:13,764 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:32:13,764 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:32:13,764 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:32:13,764 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:32:13,765 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:32:13,765 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:32:13,765 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:32:13,766 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:32:13,789 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-07-17 22:32:13,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 22:32:13,796 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:32:13,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:32:13,798 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:32:13,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:32:13,806 INFO L82 PathProgramCache]: Analyzing trace with hash 68430596, now seen corresponding path program 1 times [2020-07-17 22:32:13,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:32:13,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581128349] [2020-07-17 22:32:13,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:32:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:32:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:32:14,063 INFO L280 TraceCheckUtils]: 0: Hoare triple {57#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {52#true} is VALID [2020-07-17 22:32:14,063 INFO L280 TraceCheckUtils]: 1: Hoare triple {52#true} assume true; {52#true} is VALID [2020-07-17 22:32:14,064 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {52#true} {52#true} #161#return; {52#true} is VALID [2020-07-17 22:32:14,069 INFO L263 TraceCheckUtils]: 0: Hoare triple {52#true} call ULTIMATE.init(); {57#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:32:14,069 INFO L280 TraceCheckUtils]: 1: Hoare triple {57#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {52#true} is VALID [2020-07-17 22:32:14,070 INFO L280 TraceCheckUtils]: 2: Hoare triple {52#true} assume true; {52#true} is VALID [2020-07-17 22:32:14,070 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {52#true} {52#true} #161#return; {52#true} is VALID [2020-07-17 22:32:14,071 INFO L263 TraceCheckUtils]: 4: Hoare triple {52#true} call #t~ret16 := main(); {52#true} is VALID [2020-07-17 22:32:14,071 INFO L280 TraceCheckUtils]: 5: Hoare triple {52#true} call #t~malloc0.base, #t~malloc0.offset := #Ultimate.allocOnHeap(8);~head~0.base, ~head~0.offset := #t~malloc0.base, #t~malloc0.offset;call write~$Pointer$(0, 0, ~head~0.base, ~head~0.offset, 4);call write~int(0, ~head~0.base, 4 + ~head~0.offset, 4);~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset; {52#true} is VALID [2020-07-17 22:32:14,072 INFO L280 TraceCheckUtils]: 6: Hoare triple {52#true} assume !true; {53#false} is VALID [2020-07-17 22:32:14,073 INFO L280 TraceCheckUtils]: 7: Hoare triple {53#false} call write~int(1, ~x~0.base, 4 + ~x~0.offset, 4);call #t~malloc4.base, #t~malloc4.offset := #Ultimate.allocOnHeap(8);call write~$Pointer$(#t~malloc4.base, #t~malloc4.offset, ~x~0.base, ~x~0.offset, 4);call #t~mem5.base, #t~mem5.offset := read~$Pointer$(~x~0.base, ~x~0.offset, 4);call write~int(2, #t~mem5.base, 4 + #t~mem5.offset, 4);havoc #t~mem5.base, #t~mem5.offset;~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset; {53#false} is VALID [2020-07-17 22:32:14,073 INFO L280 TraceCheckUtils]: 8: Hoare triple {53#false} assume !(0 != ~x~0.base || 0 != ~x~0.offset); {53#false} is VALID [2020-07-17 22:32:14,074 INFO L280 TraceCheckUtils]: 9: Hoare triple {53#false} assume !false; {53#false} is VALID [2020-07-17 22:32:14,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:32:14,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581128349] [2020-07-17 22:32:14,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:32:14,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 22:32:14,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257096809] [2020-07-17 22:32:14,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-17 22:32:14,108 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:32:14,112 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-17 22:32:14,139 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:32:14,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 22:32:14,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:32:14,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 22:32:14,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 22:32:14,152 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 3 states. [2020-07-17 22:32:14,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:32:14,424 INFO L93 Difference]: Finished difference Result 92 states and 138 transitions. [2020-07-17 22:32:14,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 22:32:14,424 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-17 22:32:14,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:32:14,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-17 22:32:14,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2020-07-17 22:32:14,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-17 22:32:14,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2020-07-17 22:32:14,449 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 138 transitions. [2020-07-17 22:32:14,621 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 138 edges. 138 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:32:14,635 INFO L225 Difference]: With dead ends: 92 [2020-07-17 22:32:14,635 INFO L226 Difference]: Without dead ends: 43 [2020-07-17 22:32:14,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 22:32:14,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-17 22:32:14,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-07-17 22:32:14,699 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:32:14,700 INFO L82 GeneralOperation]: Start isEquivalent. First operand 43 states. Second operand 43 states. [2020-07-17 22:32:14,700 INFO L74 IsIncluded]: Start isIncluded. First operand 43 states. Second operand 43 states. [2020-07-17 22:32:14,700 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 43 states. [2020-07-17 22:32:14,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:32:14,710 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2020-07-17 22:32:14,710 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-07-17 22:32:14,711 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:32:14,711 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:32:14,711 INFO L74 IsIncluded]: Start isIncluded. First operand 43 states. Second operand 43 states. [2020-07-17 22:32:14,712 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 43 states. [2020-07-17 22:32:14,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:32:14,722 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2020-07-17 22:32:14,722 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-07-17 22:32:14,723 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:32:14,723 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:32:14,723 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:32:14,724 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:32:14,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-17 22:32:14,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-07-17 22:32:14,732 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 10 [2020-07-17 22:32:14,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:32:14,733 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-07-17 22:32:14,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 22:32:14,734 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-07-17 22:32:14,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 22:32:14,735 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:32:14,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:32:14,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:32:14,735 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:32:14,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:32:14,736 INFO L82 PathProgramCache]: Analyzing trace with hash 67663975, now seen corresponding path program 1 times [2020-07-17 22:32:14,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:32:14,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296280684] [2020-07-17 22:32:14,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:32:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:32:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:32:14,879 INFO L280 TraceCheckUtils]: 0: Hoare triple {313#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {307#true} is VALID [2020-07-17 22:32:14,880 INFO L280 TraceCheckUtils]: 1: Hoare triple {307#true} assume true; {307#true} is VALID [2020-07-17 22:32:14,880 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {307#true} {307#true} #161#return; {307#true} is VALID [2020-07-17 22:32:14,881 INFO L263 TraceCheckUtils]: 0: Hoare triple {307#true} call ULTIMATE.init(); {313#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:32:14,882 INFO L280 TraceCheckUtils]: 1: Hoare triple {313#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {307#true} is VALID [2020-07-17 22:32:14,882 INFO L280 TraceCheckUtils]: 2: Hoare triple {307#true} assume true; {307#true} is VALID [2020-07-17 22:32:14,882 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {307#true} {307#true} #161#return; {307#true} is VALID [2020-07-17 22:32:14,883 INFO L263 TraceCheckUtils]: 4: Hoare triple {307#true} call #t~ret16 := main(); {307#true} is VALID [2020-07-17 22:32:14,883 INFO L280 TraceCheckUtils]: 5: Hoare triple {307#true} call #t~malloc0.base, #t~malloc0.offset := #Ultimate.allocOnHeap(8);~head~0.base, ~head~0.offset := #t~malloc0.base, #t~malloc0.offset;call write~$Pointer$(0, 0, ~head~0.base, ~head~0.offset, 4);call write~int(0, ~head~0.base, 4 + ~head~0.offset, 4);~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset; {307#true} is VALID [2020-07-17 22:32:14,883 INFO L280 TraceCheckUtils]: 6: Hoare triple {307#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {307#true} is VALID [2020-07-17 22:32:14,885 INFO L280 TraceCheckUtils]: 7: Hoare triple {307#true} assume !!(0 != #t~nondet1);havoc #t~nondet1;call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(8);call write~$Pointer$(#t~malloc2.base, #t~malloc2.offset, ~x~0.base, ~x~0.offset, 4);call #t~mem3.base, #t~mem3.offset := read~$Pointer$(~x~0.base, ~x~0.offset, 4);~x~0.base, ~x~0.offset := #t~mem3.base, #t~mem3.offset;havoc #t~mem3.base, #t~mem3.offset;call write~int(0, ~x~0.base, 4 + ~x~0.offset, 4); {312#(not (= 0 main_~x~0.base))} is VALID [2020-07-17 22:32:14,887 INFO L280 TraceCheckUtils]: 8: Hoare triple {312#(not (= 0 main_~x~0.base))} assume !(0 != ~x~0.base || 0 != ~x~0.offset); {308#false} is VALID [2020-07-17 22:32:14,887 INFO L280 TraceCheckUtils]: 9: Hoare triple {308#false} assume !false; {308#false} is VALID [2020-07-17 22:32:14,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:32:14,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296280684] [2020-07-17 22:32:14,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:32:14,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 22:32:14,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785185266] [2020-07-17 22:32:14,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-17 22:32:14,891 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:32:14,891 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-17 22:32:14,908 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:32:14,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 22:32:14,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:32:14,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 22:32:14,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 22:32:14,909 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 4 states. [2020-07-17 22:32:15,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:32:15,155 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2020-07-17 22:32:15,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 22:32:15,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-17 22:32:15,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:32:15,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-17 22:32:15,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2020-07-17 22:32:15,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-17 22:32:15,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2020-07-17 22:32:15,161 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 45 transitions. [2020-07-17 22:32:15,225 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 45 edges. 45 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:32:15,227 INFO L225 Difference]: With dead ends: 43 [2020-07-17 22:32:15,227 INFO L226 Difference]: Without dead ends: 41 [2020-07-17 22:32:15,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 22:32:15,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-17 22:32:15,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-17 22:32:15,249 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:32:15,249 INFO L82 GeneralOperation]: Start isEquivalent. First operand 41 states. Second operand 41 states. [2020-07-17 22:32:15,249 INFO L74 IsIncluded]: Start isIncluded. First operand 41 states. Second operand 41 states. [2020-07-17 22:32:15,249 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 41 states. [2020-07-17 22:32:15,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:32:15,253 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-07-17 22:32:15,253 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-07-17 22:32:15,254 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:32:15,254 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:32:15,254 INFO L74 IsIncluded]: Start isIncluded. First operand 41 states. Second operand 41 states. [2020-07-17 22:32:15,254 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 41 states. [2020-07-17 22:32:15,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:32:15,258 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-07-17 22:32:15,258 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-07-17 22:32:15,259 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:32:15,259 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:32:15,259 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:32:15,260 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:32:15,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-17 22:32:15,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-07-17 22:32:15,263 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 10 [2020-07-17 22:32:15,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:32:15,263 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-07-17 22:32:15,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 22:32:15,263 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-07-17 22:32:15,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-17 22:32:15,264 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:32:15,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:32:15,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 22:32:15,265 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:32:15,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:32:15,265 INFO L82 PathProgramCache]: Analyzing trace with hash 2097539711, now seen corresponding path program 1 times [2020-07-17 22:32:15,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:32:15,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658421549] [2020-07-17 22:32:15,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:32:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:32:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:32:15,389 INFO L280 TraceCheckUtils]: 0: Hoare triple {509#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {502#true} is VALID [2020-07-17 22:32:15,390 INFO L280 TraceCheckUtils]: 1: Hoare triple {502#true} assume true; {502#true} is VALID [2020-07-17 22:32:15,390 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {502#true} {502#true} #161#return; {502#true} is VALID [2020-07-17 22:32:15,392 INFO L263 TraceCheckUtils]: 0: Hoare triple {502#true} call ULTIMATE.init(); {509#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:32:15,392 INFO L280 TraceCheckUtils]: 1: Hoare triple {509#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {502#true} is VALID [2020-07-17 22:32:15,393 INFO L280 TraceCheckUtils]: 2: Hoare triple {502#true} assume true; {502#true} is VALID [2020-07-17 22:32:15,393 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {502#true} {502#true} #161#return; {502#true} is VALID [2020-07-17 22:32:15,393 INFO L263 TraceCheckUtils]: 4: Hoare triple {502#true} call #t~ret16 := main(); {502#true} is VALID [2020-07-17 22:32:15,395 INFO L280 TraceCheckUtils]: 5: Hoare triple {502#true} call #t~malloc0.base, #t~malloc0.offset := #Ultimate.allocOnHeap(8);~head~0.base, ~head~0.offset := #t~malloc0.base, #t~malloc0.offset;call write~$Pointer$(0, 0, ~head~0.base, ~head~0.offset, 4);call write~int(0, ~head~0.base, 4 + ~head~0.offset, 4);~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset; {507#(not (= 0 main_~head~0.base))} is VALID [2020-07-17 22:32:15,396 INFO L280 TraceCheckUtils]: 6: Hoare triple {507#(not (= 0 main_~head~0.base))} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {507#(not (= 0 main_~head~0.base))} is VALID [2020-07-17 22:32:15,396 INFO L280 TraceCheckUtils]: 7: Hoare triple {507#(not (= 0 main_~head~0.base))} assume !(0 != #t~nondet1);havoc #t~nondet1; {507#(not (= 0 main_~head~0.base))} is VALID [2020-07-17 22:32:15,398 INFO L280 TraceCheckUtils]: 8: Hoare triple {507#(not (= 0 main_~head~0.base))} call write~int(1, ~x~0.base, 4 + ~x~0.offset, 4);call #t~malloc4.base, #t~malloc4.offset := #Ultimate.allocOnHeap(8);call write~$Pointer$(#t~malloc4.base, #t~malloc4.offset, ~x~0.base, ~x~0.offset, 4);call #t~mem5.base, #t~mem5.offset := read~$Pointer$(~x~0.base, ~x~0.offset, 4);call write~int(2, #t~mem5.base, 4 + #t~mem5.offset, 4);havoc #t~mem5.base, #t~mem5.offset;~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset; {508#(not (= 0 main_~x~0.base))} is VALID [2020-07-17 22:32:15,399 INFO L280 TraceCheckUtils]: 9: Hoare triple {508#(not (= 0 main_~x~0.base))} assume !(0 != ~x~0.base || 0 != ~x~0.offset); {503#false} is VALID [2020-07-17 22:32:15,399 INFO L280 TraceCheckUtils]: 10: Hoare triple {503#false} assume !false; {503#false} is VALID [2020-07-17 22:32:15,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:32:15,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658421549] [2020-07-17 22:32:15,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:32:15,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 22:32:15,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395271208] [2020-07-17 22:32:15,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-17 22:32:15,402 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:32:15,402 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-17 22:32:15,418 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:32:15,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 22:32:15,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:32:15,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 22:32:15,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 22:32:15,419 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 5 states. [2020-07-17 22:32:15,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:32:15,700 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2020-07-17 22:32:15,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 22:32:15,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-17 22:32:15,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:32:15,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-17 22:32:15,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2020-07-17 22:32:15,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-17 22:32:15,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2020-07-17 22:32:15,706 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 70 transitions. [2020-07-17 22:32:15,805 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 70 edges. 70 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:32:15,807 INFO L225 Difference]: With dead ends: 67 [2020-07-17 22:32:15,808 INFO L226 Difference]: Without dead ends: 65 [2020-07-17 22:32:15,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 22:32:15,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-07-17 22:32:15,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 39. [2020-07-17 22:32:15,828 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:32:15,828 INFO L82 GeneralOperation]: Start isEquivalent. First operand 65 states. Second operand 39 states. [2020-07-17 22:32:15,828 INFO L74 IsIncluded]: Start isIncluded. First operand 65 states. Second operand 39 states. [2020-07-17 22:32:15,829 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 39 states. [2020-07-17 22:32:15,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:32:15,832 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2020-07-17 22:32:15,833 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2020-07-17 22:32:15,833 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:32:15,834 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:32:15,834 INFO L74 IsIncluded]: Start isIncluded. First operand 39 states. Second operand 65 states. [2020-07-17 22:32:15,834 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 65 states. [2020-07-17 22:32:15,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:32:15,838 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2020-07-17 22:32:15,838 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2020-07-17 22:32:15,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:32:15,839 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:32:15,839 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:32:15,839 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:32:15,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-17 22:32:15,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-07-17 22:32:15,842 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2020-07-17 22:32:15,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:32:15,842 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-07-17 22:32:15,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 22:32:15,842 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-07-17 22:32:15,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-17 22:32:15,843 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:32:15,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:32:15,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 22:32:15,844 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:32:15,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:32:15,844 INFO L82 PathProgramCache]: Analyzing trace with hash -409997773, now seen corresponding path program 1 times [2020-07-17 22:32:15,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:32:15,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102180349] [2020-07-17 22:32:15,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:32:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:32:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:32:15,928 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 22:32:15,929 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 22:32:15,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 22:32:15,979 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-17 22:32:15,979 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:32:15,981 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:32:15,982 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-17 22:32:15,982 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:32:15,982 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:32:15,982 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:32:15,982 WARN L170 areAnnotationChecker]: L1005-5 has no Hoare annotation [2020-07-17 22:32:15,982 WARN L170 areAnnotationChecker]: L1005-5 has no Hoare annotation [2020-07-17 22:32:15,982 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:32:15,983 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:32:15,983 WARN L170 areAnnotationChecker]: L999-3 has no Hoare annotation [2020-07-17 22:32:15,983 WARN L170 areAnnotationChecker]: L999-1 has no Hoare annotation [2020-07-17 22:32:15,983 WARN L170 areAnnotationChecker]: L999-1 has no Hoare annotation [2020-07-17 22:32:15,983 WARN L170 areAnnotationChecker]: L1013-4 has no Hoare annotation [2020-07-17 22:32:15,983 WARN L170 areAnnotationChecker]: L1013-4 has no Hoare annotation [2020-07-17 22:32:15,983 WARN L170 areAnnotationChecker]: L1013-4 has no Hoare annotation [2020-07-17 22:32:15,984 WARN L170 areAnnotationChecker]: L1005-4 has no Hoare annotation [2020-07-17 22:32:15,984 WARN L170 areAnnotationChecker]: L1005-4 has no Hoare annotation [2020-07-17 22:32:15,984 WARN L170 areAnnotationChecker]: L1005-4 has no Hoare annotation [2020-07-17 22:32:15,984 WARN L170 areAnnotationChecker]: L1015-2 has no Hoare annotation [2020-07-17 22:32:15,984 WARN L170 areAnnotationChecker]: L1015-2 has no Hoare annotation [2020-07-17 22:32:15,984 WARN L170 areAnnotationChecker]: L1013-1 has no Hoare annotation [2020-07-17 22:32:15,984 WARN L170 areAnnotationChecker]: L1013-1 has no Hoare annotation [2020-07-17 22:32:15,984 WARN L170 areAnnotationChecker]: L1013-3 has no Hoare annotation [2020-07-17 22:32:15,985 WARN L170 areAnnotationChecker]: L1013-3 has no Hoare annotation [2020-07-17 22:32:15,985 WARN L170 areAnnotationChecker]: L1005-1 has no Hoare annotation [2020-07-17 22:32:15,985 WARN L170 areAnnotationChecker]: L1005-1 has no Hoare annotation [2020-07-17 22:32:15,985 WARN L170 areAnnotationChecker]: L1005-3 has no Hoare annotation [2020-07-17 22:32:15,985 WARN L170 areAnnotationChecker]: L1005-3 has no Hoare annotation [2020-07-17 22:32:15,985 WARN L170 areAnnotationChecker]: L1020-4 has no Hoare annotation [2020-07-17 22:32:15,985 WARN L170 areAnnotationChecker]: L1020-4 has no Hoare annotation [2020-07-17 22:32:15,986 WARN L170 areAnnotationChecker]: L1015 has no Hoare annotation [2020-07-17 22:32:15,986 WARN L170 areAnnotationChecker]: L1015 has no Hoare annotation [2020-07-17 22:32:15,986 WARN L170 areAnnotationChecker]: L1020 has no Hoare annotation [2020-07-17 22:32:15,986 WARN L170 areAnnotationChecker]: L1020 has no Hoare annotation [2020-07-17 22:32:15,986 WARN L170 areAnnotationChecker]: L1020-5 has no Hoare annotation [2020-07-17 22:32:15,986 WARN L170 areAnnotationChecker]: L1017-5 has no Hoare annotation [2020-07-17 22:32:15,986 WARN L170 areAnnotationChecker]: L1017-5 has no Hoare annotation [2020-07-17 22:32:15,986 WARN L170 areAnnotationChecker]: L1020-1 has no Hoare annotation [2020-07-17 22:32:15,987 WARN L170 areAnnotationChecker]: L1020-1 has no Hoare annotation [2020-07-17 22:32:15,987 WARN L170 areAnnotationChecker]: L1020-3 has no Hoare annotation [2020-07-17 22:32:15,987 WARN L170 areAnnotationChecker]: L1020-3 has no Hoare annotation [2020-07-17 22:32:15,987 WARN L170 areAnnotationChecker]: L1022-5 has no Hoare annotation [2020-07-17 22:32:15,987 WARN L170 areAnnotationChecker]: L1022-5 has no Hoare annotation [2020-07-17 22:32:15,987 WARN L170 areAnnotationChecker]: L1017-1 has no Hoare annotation [2020-07-17 22:32:15,987 WARN L170 areAnnotationChecker]: L1017-1 has no Hoare annotation [2020-07-17 22:32:15,987 WARN L170 areAnnotationChecker]: L1017-6 has no Hoare annotation [2020-07-17 22:32:15,988 WARN L170 areAnnotationChecker]: L1022-1 has no Hoare annotation [2020-07-17 22:32:15,988 WARN L170 areAnnotationChecker]: L1022-1 has no Hoare annotation [2020-07-17 22:32:15,988 WARN L170 areAnnotationChecker]: L1022-6 has no Hoare annotation [2020-07-17 22:32:15,988 WARN L170 areAnnotationChecker]: L1017-2 has no Hoare annotation [2020-07-17 22:32:15,988 WARN L170 areAnnotationChecker]: L1017-2 has no Hoare annotation [2020-07-17 22:32:15,988 WARN L170 areAnnotationChecker]: L1017-4 has no Hoare annotation [2020-07-17 22:32:15,988 WARN L170 areAnnotationChecker]: L1017-4 has no Hoare annotation [2020-07-17 22:32:15,989 WARN L170 areAnnotationChecker]: L1022-2 has no Hoare annotation [2020-07-17 22:32:15,989 WARN L170 areAnnotationChecker]: L1022-2 has no Hoare annotation [2020-07-17 22:32:15,989 WARN L170 areAnnotationChecker]: L1022-4 has no Hoare annotation [2020-07-17 22:32:15,989 WARN L170 areAnnotationChecker]: L1022-4 has no Hoare annotation [2020-07-17 22:32:15,989 WARN L170 areAnnotationChecker]: L1026-3 has no Hoare annotation [2020-07-17 22:32:15,990 WARN L170 areAnnotationChecker]: L1026-3 has no Hoare annotation [2020-07-17 22:32:15,991 WARN L170 areAnnotationChecker]: L1032-4 has no Hoare annotation [2020-07-17 22:32:15,991 WARN L170 areAnnotationChecker]: L1032-4 has no Hoare annotation [2020-07-17 22:32:15,991 WARN L170 areAnnotationChecker]: L1026-1 has no Hoare annotation [2020-07-17 22:32:15,991 WARN L170 areAnnotationChecker]: L1026-1 has no Hoare annotation [2020-07-17 22:32:15,991 WARN L170 areAnnotationChecker]: L1032 has no Hoare annotation [2020-07-17 22:32:15,991 WARN L170 areAnnotationChecker]: L1032 has no Hoare annotation [2020-07-17 22:32:15,992 WARN L170 areAnnotationChecker]: L1032-5 has no Hoare annotation [2020-07-17 22:32:15,992 WARN L170 areAnnotationChecker]: L1032-1 has no Hoare annotation [2020-07-17 22:32:15,992 WARN L170 areAnnotationChecker]: L1032-1 has no Hoare annotation [2020-07-17 22:32:15,992 WARN L170 areAnnotationChecker]: L1032-3 has no Hoare annotation [2020-07-17 22:32:15,992 WARN L170 areAnnotationChecker]: L1032-3 has no Hoare annotation [2020-07-17 22:32:15,992 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:32:15,992 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:32:15,993 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-17 22:32:15,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:32:15 BoogieIcfgContainer [2020-07-17 22:32:15,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:32:16,001 INFO L168 Benchmark]: Toolchain (without parser) took 3864.94 ms. Allocated memory was 138.4 MB in the beginning and 246.9 MB in the end (delta: 108.5 MB). Free memory was 101.1 MB in the beginning and 133.5 MB in the end (delta: -32.4 MB). Peak memory consumption was 76.1 MB. Max. memory is 7.1 GB. [2020-07-17 22:32:16,002 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-17 22:32:16,003 INFO L168 Benchmark]: CACSL2BoogieTranslator took 704.20 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 100.7 MB in the beginning and 169.4 MB in the end (delta: -68.7 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2020-07-17 22:32:16,005 INFO L168 Benchmark]: Boogie Preprocessor took 75.40 ms. Allocated memory is still 202.9 MB. Free memory was 169.4 MB in the beginning and 166.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-07-17 22:32:16,006 INFO L168 Benchmark]: RCFGBuilder took 770.31 ms. Allocated memory is still 202.9 MB. Free memory was 166.0 MB in the beginning and 109.0 MB in the end (delta: 57.0 MB). Peak memory consumption was 57.0 MB. Max. memory is 7.1 GB. [2020-07-17 22:32:16,012 INFO L168 Benchmark]: TraceAbstraction took 2307.35 ms. Allocated memory was 202.9 MB in the beginning and 246.9 MB in the end (delta: 44.0 MB). Free memory was 109.0 MB in the beginning and 133.5 MB in the end (delta: -24.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-07-17 22:32:16,023 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 704.20 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 100.7 MB in the beginning and 169.4 MB in the end (delta: -68.7 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 75.40 ms. Allocated memory is still 202.9 MB. Free memory was 169.4 MB in the beginning and 166.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 770.31 ms. Allocated memory is still 202.9 MB. Free memory was 166.0 MB in the beginning and 109.0 MB in the end (delta: 57.0 MB). Peak memory consumption was 57.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2307.35 ms. Allocated memory was 202.9 MB in the beginning and 246.9 MB in the end (delta: 44.0 MB). Free memory was 109.0 MB in the beginning and 133.5 MB in the end (delta: -24.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1020]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* head = malloc(sizeof(SLL)); [L993] head->next = ((void*)0) [L994] head->data = 0 [L996] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L999] COND FALSE !(__VERIFIER_nondet_int()) [L1007] x->data = 1 [L1008] x->next = malloc(sizeof(SLL)) [L1009] EXPR x->next [L1009] x->next->data = 2 [L1011] x = head VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}] [L1013] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}] [L1015] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->data=1] [L1015] COND FALSE !(1 != x->data) [L1020] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->data=1] [L1020] COND TRUE !(2 == x->data) [L1020] __VERIFIER_error() VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 49 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 76 SDslu, 61 SDs, 0 SdLazy, 169 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred 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: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 26 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 661 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...