/usr/bin/java -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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 13:30:09,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 13:30:09,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 13:30:09,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 13:30:09,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 13:30:09,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 13:30:09,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 13:30:09,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 13:30:09,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 13:30:09,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 13:30:09,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 13:30:09,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 13:30:09,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 13:30:09,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 13:30:09,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 13:30:09,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 13:30:09,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 13:30:09,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 13:30:09,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 13:30:09,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 13:30:09,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 13:30:09,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 13:30:09,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 13:30:09,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 13:30:09,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 13:30:09,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 13:30:09,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 13:30:09,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 13:30:09,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 13:30:09,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 13:30:09,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 13:30:09,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 13:30:09,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 13:30:09,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 13:30:09,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 13:30:09,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 13:30:09,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 13:30:09,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 13:30:09,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 13:30:09,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 13:30:09,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 13:30:09,979 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 13:30:09,988 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 13:30:09,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 13:30:09,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 13:30:09,990 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 13:30:09,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 13:30:09,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 13:30:09,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 13:30:09,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 13:30:09,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 13:30:09,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 13:30:09,992 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 13:30:09,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 13:30:09,992 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 13:30:09,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 13:30:09,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 13:30:09,993 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 13:30:09,993 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 13:30:09,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 13:30:09,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:30:09,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 13:30:09,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 13:30:09,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 13:30:09,994 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 13:30:10,273 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 13:30:10,297 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 13:30:10,300 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 13:30:10,302 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 13:30:10,302 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 13:30:10,303 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-07-17 13:30:10,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b72d921c8/6221b72a79934845a5ec84e37ce23ead/FLAG727ba0802 [2020-07-17 13:30:10,882 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 13:30:10,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-07-17 13:30:10,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b72d921c8/6221b72a79934845a5ec84e37ce23ead/FLAG727ba0802 [2020-07-17 13:30:11,193 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b72d921c8/6221b72a79934845a5ec84e37ce23ead [2020-07-17 13:30:11,203 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 13:30:11,206 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 13:30:11,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 13:30:11,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 13:30:11,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 13:30:11,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:30:11" (1/1) ... [2020-07-17 13:30:11,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2169e813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:11, skipping insertion in model container [2020-07-17 13:30:11,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:30:11" (1/1) ... [2020-07-17 13:30:11,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 13:30:11,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 13:30:11,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:30:11,777 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 13:30:11,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:30:11,900 INFO L208 MainTranslator]: Completed translation [2020-07-17 13:30:11,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:11 WrapperNode [2020-07-17 13:30:11,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 13:30:11,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 13:30:11,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 13:30:11,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 13:30:11,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:11" (1/1) ... [2020-07-17 13:30:11,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:11" (1/1) ... [2020-07-17 13:30:11,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:11" (1/1) ... [2020-07-17 13:30:11,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:11" (1/1) ... [2020-07-17 13:30:11,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:11" (1/1) ... [2020-07-17 13:30:11,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:11" (1/1) ... [2020-07-17 13:30:11,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:11" (1/1) ... [2020-07-17 13:30:11,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 13:30:11,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 13:30:11,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 13:30:11,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 13:30:11,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:11" (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 13:30:12,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 13:30:12,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 13:30:12,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-17 13:30:12,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-17 13:30:12,043 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 13:30:12,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-07-17 13:30:12,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2020-07-17 13:30:12,044 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-07-17 13:30:12,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-07-17 13:30:12,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-07-17 13:30:12,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-07-17 13:30:12,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-07-17 13:30:12,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-07-17 13:30:12,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2020-07-17 13:30:12,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2020-07-17 13:30:12,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-07-17 13:30:12,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2020-07-17 13:30:12,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2020-07-17 13:30:12,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2020-07-17 13:30:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-07-17 13:30:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-07-17 13:30:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-07-17 13:30:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-07-17 13:30:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-07-17 13:30:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 13:30:12,047 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-17 13:30:12,047 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-17 13:30:12,047 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-17 13:30:12,047 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-17 13:30:12,047 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-17 13:30:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-17 13:30:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-17 13:30:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-17 13:30:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-17 13:30:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-17 13:30:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-17 13:30:12,049 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-17 13:30:12,049 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-17 13:30:12,049 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-17 13:30:12,049 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-17 13:30:12,049 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-17 13:30:12,049 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-17 13:30:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-17 13:30:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-17 13:30:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-17 13:30:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-17 13:30:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-17 13:30:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-17 13:30:12,051 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-17 13:30:12,051 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-17 13:30:12,051 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-17 13:30:12,051 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-17 13:30:12,051 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-17 13:30:12,051 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-17 13:30:12,051 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-17 13:30:12,052 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-17 13:30:12,052 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-17 13:30:12,052 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-17 13:30:12,052 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-17 13:30:12,052 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-17 13:30:12,052 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-17 13:30:12,052 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-17 13:30:12,052 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-17 13:30:12,052 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-17 13:30:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-17 13:30:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-17 13:30:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-17 13:30:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-17 13:30:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-17 13:30:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-17 13:30:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-17 13:30:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-17 13:30:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-17 13:30:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-17 13:30:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-17 13:30:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-17 13:30:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-17 13:30:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 13:30:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-17 13:30:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-17 13:30:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 13:30:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-17 13:30:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-17 13:30:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-17 13:30:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-17 13:30:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 13:30:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-17 13:30:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-17 13:30:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-17 13:30:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-17 13:30:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-17 13:30:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-17 13:30:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-17 13:30:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-17 13:30:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-17 13:30:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-17 13:30:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-17 13:30:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-17 13:30:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-17 13:30:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-17 13:30:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-17 13:30:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-17 13:30:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-17 13:30:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-17 13:30:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-17 13:30:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-17 13:30:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-17 13:30:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-17 13:30:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-17 13:30:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-17 13:30:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-17 13:30:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-17 13:30:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-17 13:30:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-17 13:30:12,060 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-17 13:30:12,060 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-17 13:30:12,060 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-17 13:30:12,060 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-17 13:30:12,060 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-17 13:30:12,060 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-17 13:30:12,060 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-17 13:30:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-17 13:30:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-17 13:30:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-17 13:30:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-17 13:30:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-17 13:30:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-17 13:30:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 13:30:12,062 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 13:30:12,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 13:30:12,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-07-17 13:30:12,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 13:30:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2020-07-17 13:30:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-07-17 13:30:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 13:30:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-07-17 13:30:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-07-17 13:30:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-07-17 13:30:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 13:30:12,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-07-17 13:30:12,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-07-17 13:30:12,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2020-07-17 13:30:12,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2020-07-17 13:30:12,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-07-17 13:30:12,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2020-07-17 13:30:12,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2020-07-17 13:30:12,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2020-07-17 13:30:12,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 13:30:12,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-07-17 13:30:12,066 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-07-17 13:30:12,066 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-07-17 13:30:12,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-07-17 13:30:12,067 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-07-17 13:30:12,067 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 13:30:12,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 13:30:12,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 13:30:12,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-17 13:30:12,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 13:30:12,765 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 13:30:12,766 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-17 13:30:12,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:30:12 BoogieIcfgContainer [2020-07-17 13:30:12,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 13:30:12,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 13:30:12,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 13:30:12,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 13:30:12,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 01:30:11" (1/3) ... [2020-07-17 13:30:12,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd8563a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:30:12, skipping insertion in model container [2020-07-17 13:30:12,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:11" (2/3) ... [2020-07-17 13:30:12,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd8563a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:30:12, skipping insertion in model container [2020-07-17 13:30:12,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:30:12" (3/3) ... [2020-07-17 13:30:12,779 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2020-07-17 13:30:12,790 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 13:30:12,799 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-17 13:30:12,813 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-17 13:30:12,846 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 13:30:12,846 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 13:30:12,846 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 13:30:12,846 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 13:30:12,847 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 13:30:12,847 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 13:30:12,847 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 13:30:12,847 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 13:30:12,866 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-07-17 13:30:12,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-17 13:30:12,878 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:12,879 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:12,880 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:12,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:12,886 INFO L82 PathProgramCache]: Analyzing trace with hash 899835465, now seen corresponding path program 1 times [2020-07-17 13:30:12,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:12,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333548176] [2020-07-17 13:30:12,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-17 13:30:13,265 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:13,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333548176] [2020-07-17 13:30:13,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:13,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 13:30:13,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740334987] [2020-07-17 13:30:13,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 13:30:13,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:13,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 13:30:13,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-17 13:30:13,295 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 6 states. [2020-07-17 13:30:14,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:14,069 INFO L93 Difference]: Finished difference Result 367 states and 421 transitions. [2020-07-17 13:30:14,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 13:30:14,072 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-07-17 13:30:14,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:14,087 INFO L225 Difference]: With dead ends: 367 [2020-07-17 13:30:14,087 INFO L226 Difference]: Without dead ends: 192 [2020-07-17 13:30:14,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-07-17 13:30:14,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-07-17 13:30:14,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 172. [2020-07-17 13:30:14,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-07-17 13:30:14,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 184 transitions. [2020-07-17 13:30:14,194 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 184 transitions. Word has length 60 [2020-07-17 13:30:14,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:14,195 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 184 transitions. [2020-07-17 13:30:14,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 13:30:14,196 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 184 transitions. [2020-07-17 13:30:14,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-17 13:30:14,199 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:14,199 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:14,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 13:30:14,200 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:14,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:14,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1713006157, now seen corresponding path program 1 times [2020-07-17 13:30:14,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:14,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726885616] [2020-07-17 13:30:14,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:14,564 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-17 13:30:14,653 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:14,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726885616] [2020-07-17 13:30:14,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:14,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-17 13:30:14,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141561308] [2020-07-17 13:30:14,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-17 13:30:14,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:14,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-17 13:30:14,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-07-17 13:30:14,656 INFO L87 Difference]: Start difference. First operand 172 states and 184 transitions. Second operand 13 states. [2020-07-17 13:30:15,104 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-07-17 13:30:16,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:16,820 INFO L93 Difference]: Finished difference Result 494 states and 552 transitions. [2020-07-17 13:30:16,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-17 13:30:16,820 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 63 [2020-07-17 13:30:16,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:16,825 INFO L225 Difference]: With dead ends: 494 [2020-07-17 13:30:16,826 INFO L226 Difference]: Without dead ends: 343 [2020-07-17 13:30:16,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=223, Invalid=589, Unknown=0, NotChecked=0, Total=812 [2020-07-17 13:30:16,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-07-17 13:30:16,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 277. [2020-07-17 13:30:16,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-07-17 13:30:16,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 308 transitions. [2020-07-17 13:30:16,890 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 308 transitions. Word has length 63 [2020-07-17 13:30:16,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:16,890 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 308 transitions. [2020-07-17 13:30:16,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-17 13:30:16,891 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 308 transitions. [2020-07-17 13:30:16,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-07-17 13:30:16,894 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:16,894 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:16,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 13:30:16,895 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:16,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:16,895 INFO L82 PathProgramCache]: Analyzing trace with hash 2101448545, now seen corresponding path program 1 times [2020-07-17 13:30:16,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:16,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472246411] [2020-07-17 13:30:16,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:17,274 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-07-17 13:30:17,316 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:17,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472246411] [2020-07-17 13:30:17,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:17,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-17 13:30:17,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708797941] [2020-07-17 13:30:17,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-17 13:30:17,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:17,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-17 13:30:17,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-07-17 13:30:17,319 INFO L87 Difference]: Start difference. First operand 277 states and 308 transitions. Second operand 10 states. [2020-07-17 13:30:18,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:18,233 INFO L93 Difference]: Finished difference Result 484 states and 543 transitions. [2020-07-17 13:30:18,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-17 13:30:18,234 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 138 [2020-07-17 13:30:18,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:18,238 INFO L225 Difference]: With dead ends: 484 [2020-07-17 13:30:18,239 INFO L226 Difference]: Without dead ends: 250 [2020-07-17 13:30:18,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-07-17 13:30:18,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-07-17 13:30:18,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 234. [2020-07-17 13:30:18,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-07-17 13:30:18,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 252 transitions. [2020-07-17 13:30:18,304 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 252 transitions. Word has length 138 [2020-07-17 13:30:18,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:18,309 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 252 transitions. [2020-07-17 13:30:18,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-17 13:30:18,310 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 252 transitions. [2020-07-17 13:30:18,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-07-17 13:30:18,320 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:18,321 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:18,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 13:30:18,322 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:18,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:18,322 INFO L82 PathProgramCache]: Analyzing trace with hash 203347141, now seen corresponding path program 1 times [2020-07-17 13:30:18,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:18,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918296283] [2020-07-17 13:30:18,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 13:30:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 13:30:18,565 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:18,566 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 13:30:18,566 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 13:30:18,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 13:30:18,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 01:30:18 BoogieIcfgContainer [2020-07-17 13:30:18,606 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 13:30:18,609 INFO L168 Benchmark]: Toolchain (without parser) took 7403.66 ms. Allocated memory was 138.4 MB in the beginning and 318.8 MB in the end (delta: 180.4 MB). Free memory was 102.0 MB in the beginning and 243.4 MB in the end (delta: -141.5 MB). Peak memory consumption was 38.9 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:18,610 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 138.4 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 13:30:18,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 694.17 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 101.5 MB in the beginning and 164.8 MB in the end (delta: -63.3 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:18,615 INFO L168 Benchmark]: Boogie Preprocessor took 82.27 ms. Allocated memory is still 202.9 MB. Free memory was 164.8 MB in the beginning and 161.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:18,615 INFO L168 Benchmark]: RCFGBuilder took 787.32 ms. Allocated memory is still 202.9 MB. Free memory was 161.4 MB in the beginning and 92.8 MB in the end (delta: 68.6 MB). Peak memory consumption was 68.6 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:18,621 INFO L168 Benchmark]: TraceAbstraction took 5833.97 ms. Allocated memory was 202.9 MB in the beginning and 318.8 MB in the end (delta: 115.9 MB). Free memory was 92.1 MB in the beginning and 243.4 MB in the end (delta: -151.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 13:30:18,632 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 138.4 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 694.17 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 101.5 MB in the beginning and 164.8 MB in the end (delta: -63.3 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.27 ms. Allocated memory is still 202.9 MB. Free memory was 164.8 MB in the beginning and 161.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 787.32 ms. Allocated memory is still 202.9 MB. Free memory was 161.4 MB in the beginning and 92.8 MB in the end (delta: 68.6 MB). Peak memory consumption was 68.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5833.97 ms. Allocated memory was 202.9 MB in the beginning and 318.8 MB in the end (delta: 115.9 MB). Free memory was 92.1 MB in the beginning and 243.4 MB in the end (delta: -151.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 658]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L654] struct ldv_list_head mutexes = { &(mutexes), &(mutexes) }; [L681] CALL foo() [L670] FCALL ldv_initialize() [L671] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) [L565] void *ptr = malloc(size); [L566] CALL assume_abort_if_not(ptr!=0) [L554] COND FALSE !(!cond) [L566] RET assume_abort_if_not(ptr!=0) [L567] return ptr; [L671] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) [L671] struct mutex *m1 = ldv_successful_malloc(sizeof(struct mutex)); [L672] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) [L565] void *ptr = malloc(size); [L566] CALL assume_abort_if_not(ptr!=0) [L554] COND FALSE !(!cond) [L566] RET assume_abort_if_not(ptr!=0) [L567] return ptr; [L672] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) [L672] struct mutex *m2 = ldv_successful_malloc(sizeof(struct mutex)); [L673] CALL mutex_lock(m1) [L658] CALL ldv_is_in_set(m, &mutexes) [L643] struct ldv_list_element *m; [L644] EXPR (s)->next [L644] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L644] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) [L644] COND FALSE !(&m->list != (s)) [L649] return 0; [L658] RET ldv_is_in_set(m, &mutexes) [L658] COND FALSE !(ldv_is_in_set(m, &mutexes)) [L659] CALL ldv_set_add(m, &mutexes) [L625] CALL, EXPR ldv_is_in_set(new, s) [L643] struct ldv_list_element *m; [L644] EXPR (s)->next [L644] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L644] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) [L644] COND FALSE !(&m->list != (s)) [L649] return 0; [L625] RET, EXPR ldv_is_in_set(new, s) [L625] COND TRUE !ldv_is_in_set(new, s) [L626] struct ldv_list_element *le; [L627] CALL, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) [L565] void *ptr = malloc(size); [L566] CALL assume_abort_if_not(ptr!=0) [L554] COND FALSE !(!cond) [L566] RET assume_abort_if_not(ptr!=0) [L567] return ptr; [L627] RET, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) [L627] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L628] le->e = new [L629] CALL ldv_list_add(&le->list, s) [L597] EXPR head->next [L597] CALL __ldv_list_add(new, head, head->next) [L585] next->prev = new [L586] new->next = next [L587] new->prev = prev [L588] prev->next = new [L597] RET __ldv_list_add(new, head, head->next) [L629] RET ldv_list_add(&le->list, s) [L659] RET ldv_set_add(m, &mutexes) [L673] RET mutex_lock(m1) [L674] CALL mutex_lock(m1) [L658] CALL ldv_is_in_set(m, &mutexes) [L643] struct ldv_list_element *m; [L644] EXPR (s)->next [L644] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L644] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) [L644] COND TRUE &m->list != (s) [L645] EXPR m->e [L645] COND TRUE m->e == e [L646] return 1; [L658] RET ldv_is_in_set(m, &mutexes) [L658] COND TRUE ldv_is_in_set(m, &mutexes) [L658] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 25 procedures, 215 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.7s, OverallIterations: 4, TraceHistogramMax: 5, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 523 SDtfs, 1014 SDslu, 469 SDs, 0 SdLazy, 1796 SolverSat, 231 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=277occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 102 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...