/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:01:17,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:01:17,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:01:17,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 02:01:17,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 02:01:17,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 02:01:17,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 02:01:17,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 02:01:17,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 02:01:17,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 02:01:17,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 02:01:17,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 02:01:17,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:01:17,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:01:17,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:01:17,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:01:17,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:01:17,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:01:17,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:01:17,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:01:17,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:01:17,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:01:17,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:01:17,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:01:17,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:01:17,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:01:17,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:01:17,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:01:17,495 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:01:17,525 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:01:17,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:01:17,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:01:17,531 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:01:17,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:01:17,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:01:17,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:01:17,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:01:17,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:01:17,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:01:17,533 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:01:17,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:01:17,534 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:01:17,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:01:17,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:01:17,535 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:01:17,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:01:17,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:01:17,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:01:17,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:01:17,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:01:17,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:01:17,536 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:01:17,536 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:01:17,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:01:18,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:01:18,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:01:18,014 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:01:18,020 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:01:18,022 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2021-02-22 02:01:18,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8fcc47c0/9f5842aaff4e4490a3a92b41382c7610/FLAG57ef5603f [2021-02-22 02:01:18,797 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:01:18,798 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2021-02-22 02:01:18,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8fcc47c0/9f5842aaff4e4490a3a92b41382c7610/FLAG57ef5603f [2021-02-22 02:01:19,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8fcc47c0/9f5842aaff4e4490a3a92b41382c7610 [2021-02-22 02:01:19,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:01:19,098 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:01:19,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:01:19,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:01:19,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:01:19,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:01:19" (1/1) ... [2021-02-22 02:01:19,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1da2aef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:19, skipping insertion in model container [2021-02-22 02:01:19,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:01:19" (1/1) ... [2021-02-22 02:01:19,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:01:19,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:01:19,597 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] [2021-02-22 02:01:19,602 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] [2021-02-22 02:01:19,605 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] [2021-02-22 02:01:19,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:01:19,620 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:01:19,701 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] [2021-02-22 02:01:19,705 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] [2021-02-22 02:01:19,706 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] [2021-02-22 02:01:19,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:01:19,839 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:01:19,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:19 WrapperNode [2021-02-22 02:01:19,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:01:19,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:01:19,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:01:19,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:01:19,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:19" (1/1) ... [2021-02-22 02:01:19,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:19" (1/1) ... [2021-02-22 02:01:19,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:19" (1/1) ... [2021-02-22 02:01:19,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:19" (1/1) ... [2021-02-22 02:01:19,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:19" (1/1) ... [2021-02-22 02:01:19,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:19" (1/1) ... [2021-02-22 02:01:19,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:19" (1/1) ... [2021-02-22 02:01:19,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:01:19,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:01:19,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:01:20,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:01:20,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:19" (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 [2021-02-22 02:01:20,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:01:20,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:01:20,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-22 02:01:20,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-22 02:01:20,131 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:01:20,131 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:01:20,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-02-22 02:01:20,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2021-02-22 02:01:20,132 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-02-22 02:01:20,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-02-22 02:01:20,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-02-22 02:01:20,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-02-22 02:01:20,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-02-22 02:01:20,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-02-22 02:01:20,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2021-02-22 02:01:20,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2021-02-22 02:01:20,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2021-02-22 02:01:20,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2021-02-22 02:01:20,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2021-02-22 02:01:20,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2021-02-22 02:01:20,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2021-02-22 02:01:20,139 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-02-22 02:01:20,140 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-02-22 02:01:20,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-02-22 02:01:20,144 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-02-22 02:01:20,144 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:01:20,144 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-22 02:01:20,145 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-22 02:01:20,145 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-22 02:01:20,145 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-22 02:01:20,145 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-22 02:01:20,145 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-22 02:01:20,145 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-22 02:01:20,145 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-22 02:01:20,145 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-22 02:01:20,145 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-22 02:01:20,146 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-22 02:01:20,146 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-22 02:01:20,146 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-22 02:01:20,146 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-22 02:01:20,146 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-22 02:01:20,146 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-22 02:01:20,146 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-22 02:01:20,146 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-22 02:01:20,146 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-22 02:01:20,147 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-22 02:01:20,147 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-22 02:01:20,147 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-22 02:01:20,147 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-22 02:01:20,147 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-22 02:01:20,147 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-22 02:01:20,147 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-22 02:01:20,148 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-22 02:01:20,148 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-22 02:01:20,149 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-22 02:01:20,149 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-22 02:01:20,149 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-22 02:01:20,149 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-22 02:01:20,149 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-22 02:01:20,150 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-22 02:01:20,150 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-22 02:01:20,150 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-22 02:01:20,150 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-22 02:01:20,150 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-22 02:01:20,150 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-22 02:01:20,150 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-22 02:01:20,150 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-22 02:01:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-22 02:01:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-22 02:01:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-22 02:01:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-22 02:01:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-22 02:01:20,153 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-22 02:01:20,154 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-22 02:01:20,154 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-22 02:01:20,154 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-22 02:01:20,154 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-22 02:01:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-22 02:01:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 02:01:20,156 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-22 02:01:20,156 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-22 02:01:20,157 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 02:01:20,157 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-22 02:01:20,157 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-22 02:01:20,157 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-22 02:01:20,158 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-22 02:01:20,158 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:01:20,159 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-22 02:01:20,159 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-22 02:01:20,159 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-22 02:01:20,159 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-22 02:01:20,159 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-22 02:01:20,160 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-22 02:01:20,160 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-22 02:01:20,160 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-22 02:01:20,160 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-22 02:01:20,160 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-22 02:01:20,160 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-22 02:01:20,160 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-22 02:01:20,160 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-22 02:01:20,161 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-22 02:01:20,161 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-22 02:01:20,161 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-22 02:01:20,161 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-22 02:01:20,161 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-22 02:01:20,161 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-22 02:01:20,161 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-22 02:01:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-22 02:01:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-22 02:01:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-22 02:01:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-22 02:01:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-22 02:01:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-22 02:01:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-22 02:01:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-22 02:01:20,163 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-22 02:01:20,163 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-22 02:01:20,163 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-22 02:01:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-22 02:01:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-22 02:01:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-22 02:01:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-22 02:01:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-22 02:01:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-22 02:01:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-22 02:01:20,165 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-22 02:01:20,165 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-22 02:01:20,165 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-22 02:01:20,165 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:01:20,165 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-22 02:01:20,166 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-22 02:01:20,166 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:01:20,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:01:20,166 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:01:20,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:01:20,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-02-22 02:01:20,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 02:01:20,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2021-02-22 02:01:20,170 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-02-22 02:01:20,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 02:01:20,174 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-02-22 02:01:20,174 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-02-22 02:01:20,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-02-22 02:01:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 02:01:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-02-22 02:01:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-02-22 02:01:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2021-02-22 02:01:20,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2021-02-22 02:01:20,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2021-02-22 02:01:20,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2021-02-22 02:01:20,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2021-02-22 02:01:20,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2021-02-22 02:01:20,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:01:20,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2021-02-22 02:01:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-02-22 02:01:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-02-22 02:01:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-02-22 02:01:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-02-22 02:01:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:01:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:01:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:01:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-02-22 02:01:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:01:20,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:01:20,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:01:21,041 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:01:21,042 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-22 02:01:21,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:01:21 BoogieIcfgContainer [2021-02-22 02:01:21,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:01:21,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:01:21,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:01:21,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:01:21,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:01:19" (1/3) ... [2021-02-22 02:01:21,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561529d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:01:21, skipping insertion in model container [2021-02-22 02:01:21,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:19" (2/3) ... [2021-02-22 02:01:21,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561529d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:01:21, skipping insertion in model container [2021-02-22 02:01:21,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:01:21" (3/3) ... [2021-02-22 02:01:21,052 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2021-02-22 02:01:21,060 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:01:21,066 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-02-22 02:01:21,088 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-02-22 02:01:21,115 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:01:21,115 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:01:21,116 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:01:21,116 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:01:21,116 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:01:21,116 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:01:21,116 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:01:21,116 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:01:21,140 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2021-02-22 02:01:21,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-22 02:01:21,153 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:21,154 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] [2021-02-22 02:01:21,155 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:01:21,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:21,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1683504900, now seen corresponding path program 1 times [2021-02-22 02:01:21,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:21,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223370723] [2021-02-22 02:01:21,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:21,292 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:01:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:21,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:21,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:21,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:21,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:01:21,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:21,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:21,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:01:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:21,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:21,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:21,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-22 02:01:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:21,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:21,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:21,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-22 02:01:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:21,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:21,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:21,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 02:01:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:21,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:21,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:21,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-22 02:01:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:21,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:21,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:21,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 02:01:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:21,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:21,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:21,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-22 02:01:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:21,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:21,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:21,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:21,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:21,914 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-22 02:01:21,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223370723] [2021-02-22 02:01:21,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:01:21,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 02:01:21,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417144440] [2021-02-22 02:01:21,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 02:01:21,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:01:21,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 02:01:21,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:01:21,946 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 6 states. [2021-02-22 02:01:22,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:01:22,843 INFO L93 Difference]: Finished difference Result 374 states and 428 transitions. [2021-02-22 02:01:22,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 02:01:22,845 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2021-02-22 02:01:22,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:01:22,860 INFO L225 Difference]: With dead ends: 374 [2021-02-22 02:01:22,861 INFO L226 Difference]: Without dead ends: 196 [2021-02-22 02:01:22,867 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 [2021-02-22 02:01:22,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-02-22 02:01:22,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 176. [2021-02-22 02:01:22,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2021-02-22 02:01:22,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 188 transitions. [2021-02-22 02:01:22,959 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 188 transitions. Word has length 64 [2021-02-22 02:01:22,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:01:22,960 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 188 transitions. [2021-02-22 02:01:22,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 02:01:22,960 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 188 transitions. [2021-02-22 02:01:22,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-02-22 02:01:22,963 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:22,964 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] [2021-02-22 02:01:22,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:01:22,964 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:01:22,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:22,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1311659407, now seen corresponding path program 1 times [2021-02-22 02:01:22,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:22,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283656105] [2021-02-22 02:01:22,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:22,972 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:01:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:23,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:23,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-22 02:01:23,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:23,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-22 02:01:23,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:23,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-22 02:01:23,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:23,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-22 02:01:23,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:23,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:23,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:01:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:23,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:23,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:23,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:23,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:01:23,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:23,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-22 02:01:23,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-22 02:01:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:23,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:23,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:23,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-22 02:01:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:23,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:23,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:23,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 02:01:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:23,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:23,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:23,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-22 02:01:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:23,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:23,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:23,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 02:01:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:23,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:23,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:23,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-22 02:01:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:23,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:23,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:23,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:23,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:23,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:23,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-22 02:01:23,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:23,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-22 02:01:23,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:23,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-22 02:01:23,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:23,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-22 02:01:23,343 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-22 02:01:23,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283656105] [2021-02-22 02:01:23,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:01:23,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-22 02:01:23,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603056875] [2021-02-22 02:01:23,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-22 02:01:23,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:01:23,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-22 02:01:23,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-02-22 02:01:23,347 INFO L87 Difference]: Start difference. First operand 176 states and 188 transitions. Second operand 11 states. [2021-02-22 02:01:25,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:01:25,921 INFO L93 Difference]: Finished difference Result 498 states and 556 transitions. [2021-02-22 02:01:25,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-22 02:01:25,922 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2021-02-22 02:01:25,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:01:25,928 INFO L225 Difference]: With dead ends: 498 [2021-02-22 02:01:25,928 INFO L226 Difference]: Without dead ends: 347 [2021-02-22 02:01:25,932 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 [2021-02-22 02:01:25,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-02-22 02:01:26,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 281. [2021-02-22 02:01:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2021-02-22 02:01:26,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 312 transitions. [2021-02-22 02:01:26,011 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 312 transitions. Word has length 67 [2021-02-22 02:01:26,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:01:26,012 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 312 transitions. [2021-02-22 02:01:26,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-22 02:01:26,012 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 312 transitions. [2021-02-22 02:01:26,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-02-22 02:01:26,015 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:26,016 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] [2021-02-22 02:01:26,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:01:26,016 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:01:26,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:26,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1463114991, now seen corresponding path program 1 times [2021-02-22 02:01:26,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:26,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553173362] [2021-02-22 02:01:26,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:26,024 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:01:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:26,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:26,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:26,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:26,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:26,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:01:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:26,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:26,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:26,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-22 02:01:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:26,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:26,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:26,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-22 02:01:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:26,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:26,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:26,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 02:01:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:26,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:26,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:26,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-22 02:01:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:26,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:26,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:26,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 02:01:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:26,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:26,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:26,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-22 02:01:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:26,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:26,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:26,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:26,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:26,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 02:01:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:26,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:26,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:26,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-22 02:01:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:26,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:26,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:26,210 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-22 02:01:26,211 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-22 02:01:26,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:26,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:26,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 02:01:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:26,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:26,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:26,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:26,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:26,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-02-22 02:01:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:26,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:26,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:26,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 02:01:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:26,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:26,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:26,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-22 02:01:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:26,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:26,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:26,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 02:01:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:26,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:26,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:26,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-22 02:01:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:26,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:26,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:26,306 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-02-22 02:01:26,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553173362] [2021-02-22 02:01:26,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:01:26,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-22 02:01:26,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930550931] [2021-02-22 02:01:26,308 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-22 02:01:26,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:01:26,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-22 02:01:26,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-22 02:01:26,309 INFO L87 Difference]: Start difference. First operand 281 states and 312 transitions. Second operand 7 states. [2021-02-22 02:01:27,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:01:27,156 INFO L93 Difference]: Finished difference Result 515 states and 572 transitions. [2021-02-22 02:01:27,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-22 02:01:27,157 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2021-02-22 02:01:27,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:01:27,161 INFO L225 Difference]: With dead ends: 515 [2021-02-22 02:01:27,161 INFO L226 Difference]: Without dead ends: 290 [2021-02-22 02:01:27,164 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 [2021-02-22 02:01:27,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-02-22 02:01:27,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 287. [2021-02-22 02:01:27,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-02-22 02:01:27,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 318 transitions. [2021-02-22 02:01:27,245 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 318 transitions. Word has length 142 [2021-02-22 02:01:27,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:01:27,246 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 318 transitions. [2021-02-22 02:01:27,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-22 02:01:27,246 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 318 transitions. [2021-02-22 02:01:27,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-22 02:01:27,249 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:27,250 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] [2021-02-22 02:01:27,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 02:01:27,250 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:01:27,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:27,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1214229285, now seen corresponding path program 1 times [2021-02-22 02:01:27,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:27,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960210267] [2021-02-22 02:01:27,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:27,256 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:01:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:27,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 02:01:27,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 02:01:27,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 02:01:27,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:27,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:01:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:27,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:27,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:01:27,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 02:01:27,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-22 02:01:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:27,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:27,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-22 02:01:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:27,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:27,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 02:01:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:27,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:27,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-22 02:01:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:27,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:27,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 02:01:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:27,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:27,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-22 02:01:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:27,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:01:27,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 02:01:27,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-22 02:01:27,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 02:01:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:27,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:27,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:27,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-22 02:01:27,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-22 02:01:27,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-22 02:01:27,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:27,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-22 02:01:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:27,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:27,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 02:01:27,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-22 02:01:27,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 02:01:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:27,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:27,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:27,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-22 02:01:27,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-22 02:01:27,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-22 02:01:27,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-22 02:01:27,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 02:01:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:27,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:27,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 02:01:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:27,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:27,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-22 02:01:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:27,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:27,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 02:01:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:27,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:27,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-22 02:01:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:27,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:27,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:27,939 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 62 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-02-22 02:01:27,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960210267] [2021-02-22 02:01:27,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:01:27,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-22 02:01:27,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520043610] [2021-02-22 02:01:27,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-22 02:01:27,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:01:27,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-22 02:01:27,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-02-22 02:01:27,949 INFO L87 Difference]: Start difference. First operand 287 states and 318 transitions. Second operand 22 states. [2021-02-22 02:01:34,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:01:34,322 INFO L93 Difference]: Finished difference Result 733 states and 808 transitions. [2021-02-22 02:01:34,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-02-22 02:01:34,323 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 148 [2021-02-22 02:01:34,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:01:34,335 INFO L225 Difference]: With dead ends: 733 [2021-02-22 02:01:34,335 INFO L226 Difference]: Without dead ends: 406 [2021-02-22 02:01:34,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1778 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1205, Invalid=4957, Unknown=0, NotChecked=0, Total=6162 [2021-02-22 02:01:34,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-02-22 02:01:34,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 293. [2021-02-22 02:01:34,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2021-02-22 02:01:34,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 316 transitions. [2021-02-22 02:01:34,407 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 316 transitions. Word has length 148 [2021-02-22 02:01:34,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:01:34,431 INFO L480 AbstractCegarLoop]: Abstraction has 293 states and 316 transitions. [2021-02-22 02:01:34,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-22 02:01:34,431 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 316 transitions. [2021-02-22 02:01:34,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-02-22 02:01:34,433 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:34,434 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] [2021-02-22 02:01:34,434 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 02:01:34,434 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:01:34,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:34,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1707521281, now seen corresponding path program 1 times [2021-02-22 02:01:34,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:34,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282848443] [2021-02-22 02:01:34,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:34,440 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:01:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:01:34,479 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:01:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:01:34,511 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:01:34,578 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 02:01:34,578 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:01:34,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 02:01:34,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:01:34 BoogieIcfgContainer [2021-02-22 02:01:34,603 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:01:34,605 INFO L168 Benchmark]: Toolchain (without parser) took 15519.32 ms. Allocated memory was 151.0 MB in the beginning and 316.7 MB in the end (delta: 165.7 MB). Free memory was 126.3 MB in the beginning and 271.1 MB in the end (delta: -144.7 MB). Peak memory consumption was 22.6 MB. Max. memory is 8.0 GB. [2021-02-22 02:01:34,605 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:01:34,606 INFO L168 Benchmark]: CACSL2BoogieTranslator took 742.05 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 128.3 MB in the end (delta: -3.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 8.0 GB. [2021-02-22 02:01:34,606 INFO L168 Benchmark]: Boogie Preprocessor took 156.11 ms. Allocated memory is still 151.0 MB. Free memory was 128.3 MB in the beginning and 125.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:01:34,607 INFO L168 Benchmark]: RCFGBuilder took 1044.73 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 105.7 MB in the end (delta: 19.4 MB). Peak memory consumption was 45.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:01:34,607 INFO L168 Benchmark]: TraceAbstraction took 13558.08 ms. Allocated memory was 151.0 MB in the beginning and 316.7 MB in the end (delta: 165.7 MB). Free memory was 105.2 MB in the beginning and 271.1 MB in the end (delta: -165.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:01:34,610 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 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 742.05 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 128.3 MB in the end (delta: -3.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 156.11 ms. Allocated memory is still 151.0 MB. Free memory was 128.3 MB in the beginning and 125.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1044.73 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 105.7 MB in the end (delta: 19.4 MB). Peak memory consumption was 45.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 13558.08 ms. Allocated memory was 151.0 MB in the beginning and 316.7 MB in the end (delta: 165.7 MB). Free memory was 105.2 MB in the beginning and 271.1 MB in the end (delta: -165.9 MB). There was no memory consumed. 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: 13.4s, OverallIterations: 5, TraceHistogramMax: 5, AutomataDifference: 10.7s, 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, 4.4s 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...