/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 0.1.25-3af5e1f [2020-09-04 16:42:17,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:42:17,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:42:17,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:42:17,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:42:17,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:42:17,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:42:17,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:42:17,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:42:17,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:42:17,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:42:17,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:42:17,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:42:17,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:42:17,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:42:17,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:42:17,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:42:17,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:42:17,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:42:17,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:42:18,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:42:18,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:42:18,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:42:18,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:42:18,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 16:42:18,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 16:42:18,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 16:42:18,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 16:42:18,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 16:42:18,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 16:42:18,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 16:42:18,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 16:42:18,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 16:42:18,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 16:42:18,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 16:42:18,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 16:42:18,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 16:42:18,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 16:42:18,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:42:18,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:42:18,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:42:18,022 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:42:18,041 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:42:18,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:42:18,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:42:18,044 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:42:18,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:42:18,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:42:18,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:42:18,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:42:18,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:42:18,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:42:18,047 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:42:18,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:42:18,047 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:42:18,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:42:18,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:42:18,048 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:42:18,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:42:18,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:42:18,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:42:18,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:42:18,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:42:18,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:42:18,050 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:42:18,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:42:18,478 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:42:18,483 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:42:18,484 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:42:18,484 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:42:18,485 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-09-04 16:42:18,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c284abf5/418782fdc760425c81e13ada9af7e99b/FLAGf335660d4 [2020-09-04 16:42:19,171 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:42:19,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-09-04 16:42:19,189 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c284abf5/418782fdc760425c81e13ada9af7e99b/FLAGf335660d4 [2020-09-04 16:42:19,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c284abf5/418782fdc760425c81e13ada9af7e99b [2020-09-04 16:42:19,466 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:42:19,468 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:42:19,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:42:19,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:42:19,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:42:19,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:42:19" (1/1) ... [2020-09-04 16:42:19,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@770ea115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:42:19, skipping insertion in model container [2020-09-04 16:42:19,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:42:19" (1/1) ... [2020-09-04 16:42:19,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:42:19,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:42:20,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:42:20,098 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:42:20,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:42:20,218 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:42:20,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:42:20 WrapperNode [2020-09-04 16:42:20,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:42:20,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:42:20,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:42:20,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:42:20,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:42:20" (1/1) ... [2020-09-04 16:42:20,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:42:20" (1/1) ... [2020-09-04 16:42:20,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:42:20" (1/1) ... [2020-09-04 16:42:20,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:42:20" (1/1) ... [2020-09-04 16:42:20,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:42:20" (1/1) ... [2020-09-04 16:42:20,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:42:20" (1/1) ... [2020-09-04 16:42:20,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:42:20" (1/1) ... [2020-09-04 16:42:20,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:42:20,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:42:20,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:42:20,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:42:20,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:42:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 16:42:20,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:42:20,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:42:20,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-04 16:42:20,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-04 16:42:20,393 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 16:42:20,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-09-04 16:42:20,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2020-09-04 16:42:20,394 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-09-04 16:42:20,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-09-04 16:42:20,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-09-04 16:42:20,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-09-04 16:42:20,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-09-04 16:42:20,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-09-04 16:42:20,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2020-09-04 16:42:20,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2020-09-04 16:42:20,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-09-04 16:42:20,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2020-09-04 16:42:20,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2020-09-04 16:42:20,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2020-09-04 16:42:20,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-09-04 16:42:20,396 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-09-04 16:42:20,397 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-09-04 16:42:20,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-09-04 16:42:20,398 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-09-04 16:42:20,399 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:42:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-04 16:42:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-04 16:42:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-04 16:42:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-04 16:42:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-04 16:42:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-04 16:42:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-04 16:42:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-04 16:42:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-04 16:42:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-04 16:42:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-04 16:42:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-04 16:42:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-04 16:42:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-04 16:42:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-04 16:42:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-04 16:42:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-04 16:42:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-04 16:42:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-04 16:42:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-04 16:42:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-04 16:42:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-04 16:42:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-04 16:42:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-04 16:42:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-04 16:42:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-04 16:42:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-04 16:42:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-04 16:42:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-04 16:42:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-04 16:42:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-04 16:42:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-04 16:42:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-04 16:42:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-04 16:42:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-04 16:42:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-04 16:42:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-04 16:42:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-04 16:42:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-04 16:42:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-04 16:42:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-04 16:42:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-04 16:42:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-04 16:42:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-04 16:42:20,406 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-04 16:42:20,406 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-04 16:42:20,406 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-04 16:42:20,406 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-04 16:42:20,406 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-04 16:42:20,406 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-04 16:42:20,407 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-04 16:42:20,407 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-04 16:42:20,407 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 16:42:20,407 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-04 16:42:20,407 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-04 16:42:20,407 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 16:42:20,408 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-04 16:42:20,408 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-04 16:42:20,408 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-04 16:42:20,408 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-04 16:42:20,408 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 16:42:20,408 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-04 16:42:20,409 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-04 16:42:20,409 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-04 16:42:20,409 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-04 16:42:20,409 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-04 16:42:20,409 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-04 16:42:20,409 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-04 16:42:20,410 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-04 16:42:20,410 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-04 16:42:20,410 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-04 16:42:20,410 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-04 16:42:20,410 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-04 16:42:20,410 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-04 16:42:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-04 16:42:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-04 16:42:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-04 16:42:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-04 16:42:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-04 16:42:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-04 16:42:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-04 16:42:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-04 16:42:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-04 16:42:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-04 16:42:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-04 16:42:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-04 16:42:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-04 16:42:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-04 16:42:20,413 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-04 16:42:20,413 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-04 16:42:20,413 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-04 16:42:20,413 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-04 16:42:20,413 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-04 16:42:20,413 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-04 16:42:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-04 16:42:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-04 16:42:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-04 16:42:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-04 16:42:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-04 16:42:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-04 16:42:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-04 16:42:20,415 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-04 16:42:20,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:42:20,415 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 16:42:20,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 16:42:20,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-09-04 16:42:20,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 16:42:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2020-09-04 16:42:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-09-04 16:42:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 16:42:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-09-04 16:42:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-09-04 16:42:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-09-04 16:42:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 16:42:20,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-09-04 16:42:20,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-09-04 16:42:20,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2020-09-04 16:42:20,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2020-09-04 16:42:20,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-09-04 16:42:20,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2020-09-04 16:42:20,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2020-09-04 16:42:20,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2020-09-04 16:42:20,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:42:20,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-09-04 16:42:20,418 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-09-04 16:42:20,418 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-09-04 16:42:20,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-09-04 16:42:20,419 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-09-04 16:42:20,419 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:42:20,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:42:20,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 16:42:20,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-04 16:42:20,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:42:21,196 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:42:21,197 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-04 16:42:21,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:42:21 BoogieIcfgContainer [2020-09-04 16:42:21,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:42:21,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:42:21,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:42:21,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:42:21,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:42:19" (1/3) ... [2020-09-04 16:42:21,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5fbb78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:42:21, skipping insertion in model container [2020-09-04 16:42:21,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:42:20" (2/3) ... [2020-09-04 16:42:21,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5fbb78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:42:21, skipping insertion in model container [2020-09-04 16:42:21,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:42:21" (3/3) ... [2020-09-04 16:42:21,211 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2020-09-04 16:42:21,223 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:42:21,233 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-09-04 16:42:21,255 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-04 16:42:21,279 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:42:21,279 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:42:21,279 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:42:21,279 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:42:21,279 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:42:21,279 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:42:21,279 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:42:21,279 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:42:21,300 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-09-04 16:42:21,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-04 16:42:21,314 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:42:21,316 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] [2020-09-04 16:42:21,316 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:42:21,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:42:21,323 INFO L82 PathProgramCache]: Analyzing trace with hash 899835465, now seen corresponding path program 1 times [2020-09-04 16:42:21,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:42:21,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780104627] [2020-09-04 16:42:21,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:42:21,416 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:42:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:21,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:42:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:21,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 16:42:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:21,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 16:42:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:21,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:42:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:21,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 16:42:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:21,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:42:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:21,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-04 16:42:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:21,785 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-04 16:42:21,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780104627] [2020-09-04 16:42:21,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:42:21,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 16:42:21,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925438530] [2020-09-04 16:42:21,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 16:42:21,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:42:21,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 16:42:21,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:42:21,820 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 6 states. [2020-09-04 16:42:22,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:42:22,613 INFO L93 Difference]: Finished difference Result 367 states and 421 transitions. [2020-09-04 16:42:22,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:42:22,634 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-09-04 16:42:22,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:42:22,651 INFO L225 Difference]: With dead ends: 367 [2020-09-04 16:42:22,651 INFO L226 Difference]: Without dead ends: 192 [2020-09-04 16:42:22,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-04 16:42:22,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-09-04 16:42:22,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 172. [2020-09-04 16:42:22,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-09-04 16:42:22,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 184 transitions. [2020-09-04 16:42:22,778 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 184 transitions. Word has length 60 [2020-09-04 16:42:22,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:42:22,779 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 184 transitions. [2020-09-04 16:42:22,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 16:42:22,779 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 184 transitions. [2020-09-04 16:42:22,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-04 16:42:22,783 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:42:22,783 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] [2020-09-04 16:42:22,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:42:22,783 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:42:22,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:42:22,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1713006157, now seen corresponding path program 1 times [2020-09-04 16:42:22,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:42:22,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932558506] [2020-09-04 16:42:22,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:42:22,789 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:42:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:22,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:42:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:23,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 16:42:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:23,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 16:42:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:23,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:42:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:23,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 16:42:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:23,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:42:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:23,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-04 16:42:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:23,186 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-04 16:42:23,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932558506] [2020-09-04 16:42:23,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:42:23,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 16:42:23,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444703950] [2020-09-04 16:42:23,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 16:42:23,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:42:23,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 16:42:23,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-04 16:42:23,189 INFO L87 Difference]: Start difference. First operand 172 states and 184 transitions. Second operand 11 states. [2020-09-04 16:42:25,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:42:25,115 INFO L93 Difference]: Finished difference Result 494 states and 552 transitions. [2020-09-04 16:42:25,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-04 16:42:25,116 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-09-04 16:42:25,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:42:25,129 INFO L225 Difference]: With dead ends: 494 [2020-09-04 16:42:25,129 INFO L226 Difference]: Without dead ends: 343 [2020-09-04 16:42:25,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2020-09-04 16:42:25,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-09-04 16:42:25,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 277. [2020-09-04 16:42:25,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-09-04 16:42:25,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 308 transitions. [2020-09-04 16:42:25,202 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 308 transitions. Word has length 63 [2020-09-04 16:42:25,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:42:25,203 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 308 transitions. [2020-09-04 16:42:25,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 16:42:25,203 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 308 transitions. [2020-09-04 16:42:25,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-04 16:42:25,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:42:25,206 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] [2020-09-04 16:42:25,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:42:25,207 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:42:25,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:42:25,207 INFO L82 PathProgramCache]: Analyzing trace with hash 2101448545, now seen corresponding path program 1 times [2020-09-04 16:42:25,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:42:25,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108818986] [2020-09-04 16:42:25,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:42:25,213 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:42:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:25,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:42:25,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:25,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 16:42:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:25,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 16:42:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:25,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:42:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:25,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 16:42:25,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:25,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:42:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:25,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 16:42:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:25,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:42:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:25,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 16:42:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:25,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:25,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 16:42:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:25,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:42:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:25,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 16:42:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:25,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:25,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-04 16:42:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:25,487 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-09-04 16:42:25,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108818986] [2020-09-04 16:42:25,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:42:25,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 16:42:25,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733141545] [2020-09-04 16:42:25,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 16:42:25,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:42:25,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 16:42:25,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-04 16:42:25,490 INFO L87 Difference]: Start difference. First operand 277 states and 308 transitions. Second operand 7 states. [2020-09-04 16:42:26,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:42:26,248 INFO L93 Difference]: Finished difference Result 511 states and 568 transitions. [2020-09-04 16:42:26,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 16:42:26,249 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-09-04 16:42:26,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:42:26,255 INFO L225 Difference]: With dead ends: 511 [2020-09-04 16:42:26,257 INFO L226 Difference]: Without dead ends: 286 [2020-09-04 16:42:26,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-04 16:42:26,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-09-04 16:42:26,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 283. [2020-09-04 16:42:26,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-09-04 16:42:26,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 314 transitions. [2020-09-04 16:42:26,316 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 314 transitions. Word has length 138 [2020-09-04 16:42:26,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:42:26,316 INFO L479 AbstractCegarLoop]: Abstraction has 283 states and 314 transitions. [2020-09-04 16:42:26,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 16:42:26,317 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 314 transitions. [2020-09-04 16:42:26,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-04 16:42:26,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:42:26,319 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 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, 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] [2020-09-04 16:42:26,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:42:26,320 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:42:26,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:42:26,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1665265261, now seen corresponding path program 1 times [2020-09-04 16:42:26,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:42:26,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732476957] [2020-09-04 16:42:26,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:42:26,326 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:42:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:26,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:42:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:26,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 16:42:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:26,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 16:42:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:26,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:42:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:26,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 16:42:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:26,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:42:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:26,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 16:42:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:26,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:42:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:26,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 16:42:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:26,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:26,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 16:42:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:27,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:42:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:27,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 16:42:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:27,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:27,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 16:42:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:27,088 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 62 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-09-04 16:42:27,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732476957] [2020-09-04 16:42:27,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:42:27,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-09-04 16:42:27,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502563419] [2020-09-04 16:42:27,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-04 16:42:27,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:42:27,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-04 16:42:27,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2020-09-04 16:42:27,091 INFO L87 Difference]: Start difference. First operand 283 states and 314 transitions. Second operand 22 states. [2020-09-04 16:42:32,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:42:32,911 INFO L93 Difference]: Finished difference Result 715 states and 792 transitions. [2020-09-04 16:42:32,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-09-04 16:42:32,912 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 144 [2020-09-04 16:42:32,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:42:32,919 INFO L225 Difference]: With dead ends: 715 [2020-09-04 16:42:32,919 INFO L226 Difference]: Without dead ends: 388 [2020-09-04 16:42:32,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1623 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1205, Invalid=4647, Unknown=0, NotChecked=0, Total=5852 [2020-09-04 16:42:32,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2020-09-04 16:42:32,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 267. [2020-09-04 16:42:32,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-09-04 16:42:32,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 292 transitions. [2020-09-04 16:42:32,980 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 292 transitions. Word has length 144 [2020-09-04 16:42:32,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:42:32,981 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 292 transitions. [2020-09-04 16:42:32,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-04 16:42:32,981 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 292 transitions. [2020-09-04 16:42:32,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-04 16:42:32,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:42:32,984 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] [2020-09-04 16:42:32,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 16:42:32,984 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:42:32,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:42:32,985 INFO L82 PathProgramCache]: Analyzing trace with hash 203347141, now seen corresponding path program 1 times [2020-09-04 16:42:32,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:42:32,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939839678] [2020-09-04 16:42:32,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:42:32,989 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:42:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:42:33,035 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:42:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:42:33,077 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:42:33,135 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:42:33,136 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:42:33,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 16:42:33,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:42:33 BoogieIcfgContainer [2020-09-04 16:42:33,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:42:33,169 INFO L168 Benchmark]: Toolchain (without parser) took 13699.62 ms. Allocated memory was 146.8 MB in the beginning and 392.2 MB in the end (delta: 245.4 MB). Free memory was 102.5 MB in the beginning and 225.2 MB in the end (delta: -122.7 MB). Peak memory consumption was 122.7 MB. Max. memory is 7.1 GB. [2020-09-04 16:42:33,173 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:42:33,174 INFO L168 Benchmark]: CACSL2BoogieTranslator took 749.81 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 102.3 MB in the beginning and 165.3 MB in the end (delta: -63.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-09-04 16:42:33,175 INFO L168 Benchmark]: Boogie Preprocessor took 86.97 ms. Allocated memory is still 204.5 MB. Free memory was 165.3 MB in the beginning and 161.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:42:33,176 INFO L168 Benchmark]: RCFGBuilder took 895.46 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 161.9 MB in the beginning and 207.4 MB in the end (delta: -45.4 MB). Peak memory consumption was 75.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:42:33,177 INFO L168 Benchmark]: TraceAbstraction took 11961.44 ms. Allocated memory was 236.5 MB in the beginning and 392.2 MB in the end (delta: 155.7 MB). Free memory was 207.4 MB in the beginning and 225.2 MB in the end (delta: -17.8 MB). Peak memory consumption was 137.9 MB. Max. memory is 7.1 GB. [2020-09-04 16:42:33,183 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 749.81 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 102.3 MB in the beginning and 165.3 MB in the end (delta: -63.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.97 ms. Allocated memory is still 204.5 MB. Free memory was 165.3 MB in the beginning and 161.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 895.46 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 161.9 MB in the beginning and 207.4 MB in the end (delta: -45.4 MB). Peak memory consumption was 75.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11961.44 ms. Allocated memory was 236.5 MB in the beginning and 392.2 MB in the end (delta: 155.7 MB). Free memory was 207.4 MB in the beginning and 225.2 MB in the end (delta: -17.8 MB). Peak memory consumption was 137.9 MB. 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: 11.8s, OverallIterations: 5, TraceHistogramMax: 5, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 666 SDtfs, 2431 SDslu, 592 SDs, 0 SdLazy, 4362 SolverSat, 538 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1753 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=283occurred in iteration=3, 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, 4 MinimizatonAttempts, 210 StatesRemovedByMinimization, 4 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...