/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:42:09,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:42:09,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:42:09,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:42:09,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:42:09,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:42:09,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:42:09,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:42:09,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:42:09,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:42:09,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:42:09,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:42:09,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:42:09,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:42:09,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:42:09,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:42:09,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:42:09,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:42:09,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:42:09,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:42:09,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:42:09,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:42:09,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:42:09,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:42:09,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 20:42:09,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 20:42:09,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 20:42:09,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 20:42:09,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 20:42:09,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 20:42:09,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 20:42:09,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 20:42:09,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 20:42:09,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 20:42:09,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 20:42:09,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 20:42:09,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 20:42:09,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 20:42:09,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:42:10,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:42:10,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:42:10,003 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:42:10,016 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:42:10,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:42:10,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:42:10,018 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:42:10,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:42:10,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:42:10,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:42:10,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:42:10,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:42:10,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:42:10,020 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:42:10,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:42:10,020 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:42:10,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:42:10,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:42:10,021 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:42:10,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:42:10,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:42:10,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:42:10,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:42:10,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:42:10,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:42:10,022 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:42:10,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:42:10,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:42:10,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:42:10,442 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:42:10,442 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:42:10,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2021-02-21 20:42:10,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/376e12bfb/773fb9367e6e4e37beda71fa9b2f7ffc/FLAG2dc12b429 [2021-02-21 20:42:11,201 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:42:11,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2021-02-21 20:42:11,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/376e12bfb/773fb9367e6e4e37beda71fa9b2f7ffc/FLAG2dc12b429 [2021-02-21 20:42:11,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/376e12bfb/773fb9367e6e4e37beda71fa9b2f7ffc [2021-02-21 20:42:11,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:42:11,496 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:42:11,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:42:11,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:42:11,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:42:11,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:42:11" (1/1) ... [2021-02-21 20:42:11,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78813deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:11, skipping insertion in model container [2021-02-21 20:42:11,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:42:11" (1/1) ... [2021-02-21 20:42:11,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:42:11,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:42:12,115 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i[25842,25855] [2021-02-21 20:42:12,126 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i[25967,25980] [2021-02-21 20:42:12,132 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i[26082,26095] [2021-02-21 20:42:12,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:42:12,152 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:42:12,243 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i[25842,25855] [2021-02-21 20:42:12,244 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i[25967,25980] [2021-02-21 20:42:12,245 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i[26082,26095] [2021-02-21 20:42:12,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:42:12,322 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:42:12,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:12 WrapperNode [2021-02-21 20:42:12,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:42:12,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:42:12,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:42:12,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:42:12,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:12" (1/1) ... [2021-02-21 20:42:12,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:12" (1/1) ... [2021-02-21 20:42:12,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:12" (1/1) ... [2021-02-21 20:42:12,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:12" (1/1) ... [2021-02-21 20:42:12,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:12" (1/1) ... [2021-02-21 20:42:12,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:12" (1/1) ... [2021-02-21 20:42:12,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:12" (1/1) ... [2021-02-21 20:42:12,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:42:12,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:42:12,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:42:12,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:42:12,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:42:12,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:42:12,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:42:12,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-21 20:42:12,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-21 20:42:12,598 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:42:12,598 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 20:42:12,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-02-21 20:42:12,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2021-02-21 20:42:12,598 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-02-21 20:42:12,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-02-21 20:42:12,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-02-21 20:42:12,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-02-21 20:42:12,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-02-21 20:42:12,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-02-21 20:42:12,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2021-02-21 20:42:12,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2021-02-21 20:42:12,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2021-02-21 20:42:12,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2021-02-21 20:42:12,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2021-02-21 20:42:12,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2021-02-21 20:42:12,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2021-02-21 20:42:12,601 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-02-21 20:42:12,601 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-02-21 20:42:12,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-02-21 20:42:12,601 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-02-21 20:42:12,601 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:42:12,602 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-21 20:42:12,602 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-21 20:42:12,602 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-21 20:42:12,602 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-21 20:42:12,602 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-21 20:42:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-21 20:42:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-21 20:42:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-21 20:42:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-21 20:42:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-21 20:42:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-21 20:42:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-21 20:42:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-21 20:42:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-21 20:42:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-21 20:42:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-21 20:42:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-21 20:42:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-21 20:42:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-21 20:42:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-21 20:42:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-21 20:42:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-21 20:42:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-21 20:42:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-21 20:42:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-21 20:42:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-21 20:42:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-21 20:42:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-21 20:42:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-21 20:42:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-21 20:42:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-21 20:42:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-21 20:42:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-21 20:42:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-21 20:42:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-21 20:42:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-21 20:42:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-21 20:42:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-21 20:42:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-21 20:42:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-21 20:42:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-21 20:42:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-21 20:42:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-21 20:42:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-21 20:42:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-21 20:42:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-21 20:42:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-21 20:42:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-21 20:42:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-21 20:42:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-21 20:42:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-21 20:42:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-21 20:42:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 20:42:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-21 20:42:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-21 20:42:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 20:42:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-21 20:42:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-21 20:42:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-21 20:42:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-21 20:42:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:42:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-21 20:42:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-21 20:42:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-21 20:42:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-21 20:42:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-21 20:42:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-21 20:42:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-21 20:42:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-21 20:42:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-21 20:42:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-21 20:42:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-21 20:42:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-21 20:42:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-21 20:42:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-21 20:42:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-21 20:42:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-21 20:42:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-21 20:42:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-21 20:42:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-21 20:42:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-21 20:42:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-21 20:42:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-21 20:42:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-21 20:42:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-21 20:42:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-21 20:42:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-21 20:42:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-21 20:42:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-21 20:42:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-21 20:42:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-21 20:42:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-21 20:42:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-21 20:42:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-21 20:42:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-21 20:42:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-21 20:42:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-21 20:42:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-21 20:42:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-21 20:42:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-21 20:42:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-21 20:42:12,620 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-21 20:42:12,620 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:42:12,620 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 20:42:12,620 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 20:42:12,620 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:42:12,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:42:12,621 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 20:42:12,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 20:42:12,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-02-21 20:42:12,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 20:42:12,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2021-02-21 20:42:12,622 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-02-21 20:42:12,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 20:42:12,622 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-02-21 20:42:12,622 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-02-21 20:42:12,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-02-21 20:42:12,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 20:42:12,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-02-21 20:42:12,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-02-21 20:42:12,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2021-02-21 20:42:12,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2021-02-21 20:42:12,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2021-02-21 20:42:12,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2021-02-21 20:42:12,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2021-02-21 20:42:12,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2021-02-21 20:42:12,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:42:12,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2021-02-21 20:42:12,624 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-02-21 20:42:12,624 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-02-21 20:42:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-02-21 20:42:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-02-21 20:42:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:42:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:42:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:42:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-02-21 20:42:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:42:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:42:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:42:13,604 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:42:13,605 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-21 20:42:13,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:42:13 BoogieIcfgContainer [2021-02-21 20:42:13,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:42:13,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:42:13,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:42:13,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:42:13,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:42:11" (1/3) ... [2021-02-21 20:42:13,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db75d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:42:13, skipping insertion in model container [2021-02-21 20:42:13,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:12" (2/3) ... [2021-02-21 20:42:13,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db75d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:42:13, skipping insertion in model container [2021-02-21 20:42:13,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:42:13" (3/3) ... [2021-02-21 20:42:13,617 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2021-02-21 20:42:13,625 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:42:13,630 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-02-21 20:42:13,651 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-02-21 20:42:13,681 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:42:13,681 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:42:13,682 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:42:13,682 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:42:13,682 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:42:13,682 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:42:13,682 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:42:13,682 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:42:13,706 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2021-02-21 20:42:13,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-21 20:42:13,719 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:13,720 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, 1] [2021-02-21 20:42:13,720 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:13,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:13,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1683504900, now seen corresponding path program 1 times [2021-02-21 20:42:13,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:13,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349930044] [2021-02-21 20:42:13,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:13,835 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:14,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:14,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:14,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:14,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:14,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:14,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:14,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:14,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:14,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:14,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-21 20:42:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:14,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:14,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:14,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-21 20:42:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:14,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:14,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:14,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:42:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:14,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:14,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:14,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-21 20:42:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:14,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:14,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:14,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:42:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:14,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:14,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:14,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-21 20:42:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:14,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:14,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:14,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:14,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:14,336 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-21 20:42:14,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349930044] [2021-02-21 20:42:14,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:14,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:42:14,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710514683] [2021-02-21 20:42:14,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:42:14,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:14,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:42:14,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:42:14,365 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 6 states. [2021-02-21 20:42:15,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:15,235 INFO L93 Difference]: Finished difference Result 374 states and 428 transitions. [2021-02-21 20:42:15,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 20:42:15,237 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2021-02-21 20:42:15,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:15,252 INFO L225 Difference]: With dead ends: 374 [2021-02-21 20:42:15,253 INFO L226 Difference]: Without dead ends: 196 [2021-02-21 20:42:15,259 INFO L677 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 [2021-02-21 20:42:15,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-02-21 20:42:15,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 176. [2021-02-21 20:42:15,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2021-02-21 20:42:15,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 188 transitions. [2021-02-21 20:42:15,350 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 188 transitions. Word has length 64 [2021-02-21 20:42:15,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:15,351 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 188 transitions. [2021-02-21 20:42:15,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:42:15,352 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 188 transitions. [2021-02-21 20:42:15,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-02-21 20:42:15,355 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:15,355 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, 1, 1, 1, 1] [2021-02-21 20:42:15,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:42:15,356 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:15,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:15,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1311659407, now seen corresponding path program 1 times [2021-02-21 20:42:15,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:15,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074157494] [2021-02-21 20:42:15,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:15,365 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:15,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:15,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 20:42:15,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:15,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 20:42:15,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:15,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 20:42:15,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:15,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 20:42:15,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:15,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:15,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:15,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:15,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:15,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:15,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:15,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:15,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 20:42:15,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-21 20:42:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:15,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:15,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:15,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-21 20:42:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:15,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:15,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:15,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:42:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:15,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:15,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:15,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-21 20:42:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:15,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:15,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:15,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:42:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:15,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:15,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:15,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-21 20:42:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:15,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:15,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:15,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:15,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:15,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:15,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:42:15,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:15,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:42:15,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:15,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 20:42:15,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:15,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 20:42:15,846 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-21 20:42:15,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074157494] [2021-02-21 20:42:15,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:15,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 20:42:15,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024163058] [2021-02-21 20:42:15,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 20:42:15,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:15,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 20:42:15,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-02-21 20:42:15,856 INFO L87 Difference]: Start difference. First operand 176 states and 188 transitions. Second operand 11 states. [2021-02-21 20:42:18,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:18,396 INFO L93 Difference]: Finished difference Result 498 states and 556 transitions. [2021-02-21 20:42:18,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-21 20:42:18,398 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2021-02-21 20:42:18,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:18,404 INFO L225 Difference]: With dead ends: 498 [2021-02-21 20:42:18,405 INFO L226 Difference]: Without dead ends: 347 [2021-02-21 20:42:18,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2021-02-21 20:42:18,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-02-21 20:42:18,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 281. [2021-02-21 20:42:18,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2021-02-21 20:42:18,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 312 transitions. [2021-02-21 20:42:18,495 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 312 transitions. Word has length 67 [2021-02-21 20:42:18,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:18,496 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 312 transitions. [2021-02-21 20:42:18,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 20:42:18,496 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 312 transitions. [2021-02-21 20:42:18,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-02-21 20:42:18,499 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:18,500 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, 1, 1, 1, 1] [2021-02-21 20:42:18,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:42:18,500 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:18,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:18,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1463114991, now seen corresponding path program 1 times [2021-02-21 20:42:18,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:18,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90104511] [2021-02-21 20:42:18,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:18,512 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:18,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:18,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:18,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:18,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:18,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:18,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:18,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:18,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-21 20:42:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:18,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:18,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:18,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-21 20:42:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:18,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:18,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:18,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:42:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:18,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:18,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:18,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-21 20:42:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:18,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:18,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:18,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:42:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:18,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:18,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:18,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:42:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:18,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:18,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:18,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:18,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:18,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 20:42:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:18,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:18,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:18,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-21 20:42:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:18,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:18,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:18,834 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-21 20:42:18,835 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-21 20:42:18,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:18,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:18,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:42:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:18,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:18,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:18,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:18,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:18,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-02-21 20:42:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:18,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:18,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:18,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 20:42:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:18,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:18,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:18,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-21 20:42:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:18,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:18,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:18,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:42:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:18,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:18,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:18,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 20:42:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:18,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:18,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:18,936 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-02-21 20:42:18,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90104511] [2021-02-21 20:42:18,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:18,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 20:42:18,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382336592] [2021-02-21 20:42:18,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 20:42:18,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:18,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 20:42:18,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 20:42:18,939 INFO L87 Difference]: Start difference. First operand 281 states and 312 transitions. Second operand 7 states. [2021-02-21 20:42:19,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:19,786 INFO L93 Difference]: Finished difference Result 515 states and 572 transitions. [2021-02-21 20:42:19,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 20:42:19,787 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2021-02-21 20:42:19,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:19,798 INFO L225 Difference]: With dead ends: 515 [2021-02-21 20:42:19,799 INFO L226 Difference]: Without dead ends: 290 [2021-02-21 20:42:19,803 INFO L677 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 [2021-02-21 20:42:19,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-02-21 20:42:19,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 287. [2021-02-21 20:42:19,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-02-21 20:42:19,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 318 transitions. [2021-02-21 20:42:19,905 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 318 transitions. Word has length 142 [2021-02-21 20:42:19,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:19,909 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 318 transitions. [2021-02-21 20:42:19,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 20:42:19,909 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 318 transitions. [2021-02-21 20:42:19,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 20:42:19,918 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:19,919 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, 1, 1, 1, 1] [2021-02-21 20:42:19,919 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:42:19,919 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:19,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:19,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1214229285, now seen corresponding path program 1 times [2021-02-21 20:42:19,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:19,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023494179] [2021-02-21 20:42:19,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:19,925 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:20,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:42:20,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:42:20,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:42:20,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:20,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:20,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:20,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:20,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:42:20,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-21 20:42:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:20,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:20,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-21 20:42:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:20,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:20,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:42:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:20,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:20,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-21 20:42:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:20,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:20,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:42:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:20,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:20,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:42:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:20,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:20,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:42:20,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:42:20,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 20:42:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:20,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:20,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:20,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 20:42:20,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 20:42:20,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 20:42:20,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:20,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-21 20:42:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:20,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:20,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 20:42:20,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 20:42:20,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:42:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:20,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:20,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:20,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:42:20,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:42:20,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 20:42:20,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 20:42:20,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 20:42:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:20,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:20,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 20:42:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:20,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:20,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-21 20:42:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:20,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:20,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:42:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:20,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:20,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 20:42:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:20,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:20,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:20,632 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 62 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-02-21 20:42:20,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023494179] [2021-02-21 20:42:20,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:20,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-21 20:42:20,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964139701] [2021-02-21 20:42:20,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-21 20:42:20,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:20,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-21 20:42:20,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-02-21 20:42:20,635 INFO L87 Difference]: Start difference. First operand 287 states and 318 transitions. Second operand 22 states. [2021-02-21 20:42:26,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:26,726 INFO L93 Difference]: Finished difference Result 733 states and 808 transitions. [2021-02-21 20:42:26,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-02-21 20:42:26,726 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 148 [2021-02-21 20:42:26,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:26,730 INFO L225 Difference]: With dead ends: 733 [2021-02-21 20:42:26,730 INFO L226 Difference]: Without dead ends: 406 [2021-02-21 20:42:26,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1778 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1205, Invalid=4957, Unknown=0, NotChecked=0, Total=6162 [2021-02-21 20:42:26,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-02-21 20:42:26,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 293. [2021-02-21 20:42:26,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2021-02-21 20:42:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 316 transitions. [2021-02-21 20:42:26,800 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 316 transitions. Word has length 148 [2021-02-21 20:42:26,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:26,800 INFO L480 AbstractCegarLoop]: Abstraction has 293 states and 316 transitions. [2021-02-21 20:42:26,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-21 20:42:26,801 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 316 transitions. [2021-02-21 20:42:26,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-02-21 20:42:26,802 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:26,803 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, 1, 1, 1, 1] [2021-02-21 20:42:26,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 20:42:26,803 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:26,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:26,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1707521281, now seen corresponding path program 1 times [2021-02-21 20:42:26,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:26,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613863546] [2021-02-21 20:42:26,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:26,809 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:42:26,849 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:42:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:42:26,883 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:42:26,949 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:42:26,949 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:42:26,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 20:42:26,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:42:26 BoogieIcfgContainer [2021-02-21 20:42:26,975 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:42:26,976 INFO L168 Benchmark]: Toolchain (without parser) took 15492.96 ms. Allocated memory was 163.6 MB in the beginning and 351.3 MB in the end (delta: 187.7 MB). Free memory was 138.0 MB in the beginning and 224.3 MB in the end (delta: -86.3 MB). Peak memory consumption was 101.9 MB. Max. memory is 8.0 GB. [2021-02-21 20:42:26,977 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 163.6 MB. Free memory is still 137.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:42:26,977 INFO L168 Benchmark]: CACSL2BoogieTranslator took 820.23 ms. Allocated memory is still 163.6 MB. Free memory was 137.0 MB in the beginning and 109.8 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2021-02-21 20:42:26,978 INFO L168 Benchmark]: Boogie Preprocessor took 137.48 ms. Allocated memory is still 163.6 MB. Free memory was 109.8 MB in the beginning and 145.4 MB in the end (delta: -35.6 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. [2021-02-21 20:42:26,978 INFO L168 Benchmark]: RCFGBuilder took 1139.94 ms. Allocated memory is still 163.6 MB. Free memory was 145.4 MB in the beginning and 78.2 MB in the end (delta: 67.1 MB). Peak memory consumption was 67.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:42:26,979 INFO L168 Benchmark]: TraceAbstraction took 13366.04 ms. Allocated memory was 163.6 MB in the beginning and 351.3 MB in the end (delta: 187.7 MB). Free memory was 77.7 MB in the beginning and 224.3 MB in the end (delta: -146.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:42:26,980 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 163.6 MB. Free memory is still 137.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 820.23 ms. Allocated memory is still 163.6 MB. Free memory was 137.0 MB in the beginning and 109.8 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 137.48 ms. Allocated memory is still 163.6 MB. Free memory was 109.8 MB in the beginning and 145.4 MB in the end (delta: -35.6 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1139.94 ms. Allocated memory is still 163.6 MB. Free memory was 145.4 MB in the beginning and 78.2 MB in the end (delta: 67.1 MB). Peak memory consumption was 67.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 13366.04 ms. Allocated memory was 163.6 MB in the beginning and 351.3 MB in the end (delta: 187.7 MB). Free memory was 77.7 MB in the beginning and 224.3 MB in the end (delta: -146.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 669]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L665] struct ldv_list_head mutexes = { &(mutexes), &(mutexes) }; [L692] CALL foo() [L681] FCALL ldv_initialize() [L682] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) [L576] void *ptr = malloc(size); [L577] CALL assume_abort_if_not(ptr!=0) [L565] COND FALSE !(!cond) [L577] RET assume_abort_if_not(ptr!=0) [L578] return ptr; [L682] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) [L682] struct mutex *m1 = ldv_successful_malloc(sizeof(struct mutex)); [L683] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) [L576] void *ptr = malloc(size); [L577] CALL assume_abort_if_not(ptr!=0) [L565] COND FALSE !(!cond) [L577] RET assume_abort_if_not(ptr!=0) [L578] return ptr; [L683] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) [L683] struct mutex *m2 = ldv_successful_malloc(sizeof(struct mutex)); [L684] CALL mutex_lock(m1) [L669] CALL ldv_is_in_set(m, &mutexes) [L654] struct ldv_list_element *m; [L655] EXPR (s)->next [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) [L655] COND FALSE !(&m->list != (s)) [L660] return 0; [L669] RET ldv_is_in_set(m, &mutexes) [L669] COND FALSE !(ldv_is_in_set(m, &mutexes)) [L670] CALL ldv_set_add(m, &mutexes) [L636] CALL, EXPR ldv_is_in_set(new, s) [L654] struct ldv_list_element *m; [L655] EXPR (s)->next [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) [L655] COND FALSE !(&m->list != (s)) [L660] return 0; [L636] RET, EXPR ldv_is_in_set(new, s) [L636] COND TRUE !ldv_is_in_set(new, s) [L637] struct ldv_list_element *le; [L638] CALL, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) [L576] void *ptr = malloc(size); [L577] CALL assume_abort_if_not(ptr!=0) [L565] COND FALSE !(!cond) [L577] RET assume_abort_if_not(ptr!=0) [L578] return ptr; [L638] RET, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) [L638] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L639] le->e = new [L640] CALL ldv_list_add(&le->list, s) [L608] EXPR head->next [L608] CALL __ldv_list_add(new, head, head->next) [L596] next->prev = new [L597] new->next = next [L598] new->prev = prev [L599] prev->next = new [L608] RET __ldv_list_add(new, head, head->next) [L640] RET ldv_list_add(&le->list, s) [L670] RET ldv_set_add(m, &mutexes) [L684] RET mutex_lock(m1) [L685] CALL mutex_lock(m1) [L669] CALL ldv_is_in_set(m, &mutexes) [L654] struct ldv_list_element *m; [L655] EXPR (s)->next [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) [L655] COND TRUE &m->list != (s) [L656] EXPR m->e [L656] COND TRUE m->e == e [L657] return 1; [L669] RET ldv_is_in_set(m, &mutexes) [L669] COND TRUE ldv_is_in_set(m, &mutexes) [L669] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 26 procedures, 227 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.2s, OverallIterations: 5, TraceHistogramMax: 5, AutomataDifference: 10.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 715 SDtfs, 2280 SDslu, 593 SDs, 0 SdLazy, 3890 SolverSat, 538 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1908 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=293occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 202 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...