/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-36cd7be [2021-02-24 04:26:11,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:26:11,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:26:11,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:26:11,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:26:11,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:26:11,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:26:11,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:26:11,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:26:11,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:26:11,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:26:11,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:26:11,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:26:11,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:26:11,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:26:11,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:26:11,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:26:11,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:26:11,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:26:11,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:26:11,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:26:11,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:26:11,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:26:11,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:26:11,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:26:11,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 04:26:11,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 04:26:11,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 04:26:11,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 04:26:11,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 04:26:11,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 04:26:11,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 04:26:11,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 04:26:11,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:26:11,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:26:11,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:26:11,536 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:26:11,551 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:26:11,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:26:11,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:26:11,553 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:26:11,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:26:11,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:26:11,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:26:11,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:26:11,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:26:11,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:26:11,555 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:26:11,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:26:11,555 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:26:11,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:26:11,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:26:11,556 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:26:11,556 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:26:11,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:26:11,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:26:11,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:26:11,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:26:11,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:26:11,558 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:26:11,558 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:26:11,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:26:11,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:26:11,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:26:11,962 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:26:11,965 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:26:11,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2021-02-24 04:26:12,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc6c7bddf/317297a17c1b448f813f81cb8ccd5a1b/FLAG309f46669 [2021-02-24 04:26:12,796 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:26:12,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2021-02-24 04:26:12,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc6c7bddf/317297a17c1b448f813f81cb8ccd5a1b/FLAG309f46669 [2021-02-24 04:26:13,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc6c7bddf/317297a17c1b448f813f81cb8ccd5a1b [2021-02-24 04:26:13,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:26:13,070 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:26:13,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:26:13,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:26:13,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:26:13,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:26:13" (1/1) ... [2021-02-24 04:26:13,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@235b1ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:26:13, skipping insertion in model container [2021-02-24 04:26:13,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:26:13" (1/1) ... [2021-02-24 04:26:13,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:26:13,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:26:13,677 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] [2021-02-24 04:26:13,693 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] [2021-02-24 04:26:13,698 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] [2021-02-24 04:26:13,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:26:13,717 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:26:13,797 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] [2021-02-24 04:26:13,798 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] [2021-02-24 04:26:13,800 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] [2021-02-24 04:26:13,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:26:13,889 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:26:13,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:26:13 WrapperNode [2021-02-24 04:26:13,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:26:13,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:26:13,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:26:13,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:26:13,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:26:13" (1/1) ... [2021-02-24 04:26:13,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:26:13" (1/1) ... [2021-02-24 04:26:13,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:26:13" (1/1) ... [2021-02-24 04:26:13,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:26:13" (1/1) ... [2021-02-24 04:26:13,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:26:13" (1/1) ... [2021-02-24 04:26:13,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:26:13" (1/1) ... [2021-02-24 04:26:13,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:26:13" (1/1) ... [2021-02-24 04:26:13,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:26:13,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:26:13,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:26:13,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:26:13,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:26:13" (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 [2021-02-24 04:26:14,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:26:14,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:26:14,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-24 04:26:14,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-24 04:26:14,100 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:26:14,100 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:26:14,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-02-24 04:26:14,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2021-02-24 04:26:14,100 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-02-24 04:26:14,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-02-24 04:26:14,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-02-24 04:26:14,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-02-24 04:26:14,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-02-24 04:26:14,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-02-24 04:26:14,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2021-02-24 04:26:14,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2021-02-24 04:26:14,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2021-02-24 04:26:14,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2021-02-24 04:26:14,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2021-02-24 04:26:14,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2021-02-24 04:26:14,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2021-02-24 04:26:14,107 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-02-24 04:26:14,107 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-02-24 04:26:14,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-02-24 04:26:14,107 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-02-24 04:26:14,108 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:26:14,108 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-24 04:26:14,108 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-24 04:26:14,108 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-24 04:26:14,109 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-24 04:26:14,109 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-24 04:26:14,109 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-24 04:26:14,109 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-24 04:26:14,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-24 04:26:14,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-24 04:26:14,110 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-24 04:26:14,110 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-24 04:26:14,110 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-24 04:26:14,110 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-24 04:26:14,110 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-24 04:26:14,111 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-24 04:26:14,111 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-24 04:26:14,111 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-24 04:26:14,111 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-24 04:26:14,111 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-24 04:26:14,112 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-24 04:26:14,112 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-24 04:26:14,112 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-24 04:26:14,112 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-24 04:26:14,112 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-24 04:26:14,112 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-24 04:26:14,113 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-24 04:26:14,113 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-24 04:26:14,113 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-24 04:26:14,113 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-24 04:26:14,114 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-24 04:26:14,115 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-24 04:26:14,115 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-24 04:26:14,115 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-24 04:26:14,115 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-24 04:26:14,116 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-24 04:26:14,116 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-24 04:26:14,116 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-24 04:26:14,116 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-24 04:26:14,117 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-24 04:26:14,117 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-24 04:26:14,117 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-24 04:26:14,117 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-24 04:26:14,118 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-24 04:26:14,118 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-24 04:26:14,118 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-24 04:26:14,118 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-24 04:26:14,119 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-24 04:26:14,119 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-24 04:26:14,120 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-24 04:26:14,120 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-24 04:26:14,120 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-24 04:26:14,120 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-24 04:26:14,120 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 04:26:14,121 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-24 04:26:14,122 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-24 04:26:14,122 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 04:26:14,123 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-24 04:26:14,123 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-24 04:26:14,123 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-24 04:26:14,123 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-24 04:26:14,124 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:26:14,124 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-24 04:26:14,125 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-24 04:26:14,125 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-24 04:26:14,125 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-24 04:26:14,125 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-24 04:26:14,125 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-24 04:26:14,126 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-24 04:26:14,126 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-24 04:26:14,126 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-24 04:26:14,126 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-24 04:26:14,126 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-24 04:26:14,126 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-24 04:26:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-24 04:26:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-24 04:26:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-24 04:26:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-24 04:26:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-24 04:26:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-24 04:26:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-24 04:26:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-24 04:26:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-24 04:26:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-24 04:26:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-24 04:26:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-24 04:26:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-24 04:26:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-24 04:26:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-24 04:26:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-24 04:26:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-24 04:26:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-24 04:26:14,130 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-24 04:26:14,130 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-24 04:26:14,130 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-24 04:26:14,131 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-24 04:26:14,131 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-24 04:26:14,131 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-24 04:26:14,131 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-24 04:26:14,132 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-24 04:26:14,132 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-24 04:26:14,132 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-24 04:26:14,132 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-24 04:26:14,132 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:26:14,132 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-24 04:26:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-24 04:26:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:26:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:26:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:26:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:26:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-02-24 04:26:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 04:26:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2021-02-24 04:26:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-02-24 04:26:14,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 04:26:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-02-24 04:26:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-02-24 04:26:14,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-02-24 04:26:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 04:26:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-02-24 04:26:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-02-24 04:26:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2021-02-24 04:26:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2021-02-24 04:26:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2021-02-24 04:26:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2021-02-24 04:26:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2021-02-24 04:26:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2021-02-24 04:26:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:26:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2021-02-24 04:26:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-02-24 04:26:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-02-24 04:26:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-02-24 04:26:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-02-24 04:26:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:26:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:26:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:26:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-02-24 04:26:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:26:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:26:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:26:15,313 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:26:15,314 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-24 04:26:15,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:26:15 BoogieIcfgContainer [2021-02-24 04:26:15,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:26:15,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:26:15,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:26:15,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:26:15,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:26:13" (1/3) ... [2021-02-24 04:26:15,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133cbe5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:26:15, skipping insertion in model container [2021-02-24 04:26:15,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:26:13" (2/3) ... [2021-02-24 04:26:15,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133cbe5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:26:15, skipping insertion in model container [2021-02-24 04:26:15,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:26:15" (3/3) ... [2021-02-24 04:26:15,326 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2021-02-24 04:26:15,332 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:26:15,338 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-02-24 04:26:15,372 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-02-24 04:26:15,406 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:26:15,406 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:26:15,406 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:26:15,406 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:26:15,406 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:26:15,406 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:26:15,407 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:26:15,407 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:26:15,430 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2021-02-24 04:26:15,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-24 04:26:15,442 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:26:15,443 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] [2021-02-24 04:26:15,444 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:26:15,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:26:15,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1683504900, now seen corresponding path program 1 times [2021-02-24 04:26:15,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:26:15,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899469130] [2021-02-24 04:26:15,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:26:15,573 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:26:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:15,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:15,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:15,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:15,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:26:15,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:15,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:16,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:26:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:16,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:16,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:16,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-24 04:26:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:16,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:16,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:16,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-24 04:26:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:16,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:16,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:16,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:26:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:16,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:16,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:16,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 04:26:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:16,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:16,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:16,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:26:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:16,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:16,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:16,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 04:26:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:16,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:16,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:16,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:16,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:26:16,184 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-24 04:26:16,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899469130] [2021-02-24 04:26:16,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:26:16,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:26:16,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425532270] [2021-02-24 04:26:16,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:26:16,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:26:16,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:26:16,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:26:16,211 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 6 states. [2021-02-24 04:26:17,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:26:17,545 INFO L93 Difference]: Finished difference Result 374 states and 428 transitions. [2021-02-24 04:26:17,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:26:17,548 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2021-02-24 04:26:17,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:26:17,563 INFO L225 Difference]: With dead ends: 374 [2021-02-24 04:26:17,563 INFO L226 Difference]: Without dead ends: 196 [2021-02-24 04:26:17,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-02-24 04:26:17,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-02-24 04:26:17,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 176. [2021-02-24 04:26:17,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2021-02-24 04:26:17,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 188 transitions. [2021-02-24 04:26:17,654 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 188 transitions. Word has length 64 [2021-02-24 04:26:17,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:26:17,654 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 188 transitions. [2021-02-24 04:26:17,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:26:17,655 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 188 transitions. [2021-02-24 04:26:17,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-02-24 04:26:17,658 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:26:17,658 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] [2021-02-24 04:26:17,659 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:26:17,659 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:26:17,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:26:17,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1311659407, now seen corresponding path program 1 times [2021-02-24 04:26:17,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:26:17,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313217236] [2021-02-24 04:26:17,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:26:17,667 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:26:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:17,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:17,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:26:17,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:17,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:26:17,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:17,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:26:17,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:17,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:26:17,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:17,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:17,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:26:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:17,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:17,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:17,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:17,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:26:17,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:17,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:26:17,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-24 04:26:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:17,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:17,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:17,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-24 04:26:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:17,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:17,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:17,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:26:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:17,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:17,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:17,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 04:26:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:17,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:17,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:17,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:26:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:17,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:17,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:17,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 04:26:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:17,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:17,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:17,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:17,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:26:17,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:17,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-24 04:26:18,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:18,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-24 04:26:18,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:18,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-24 04:26:18,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:18,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:26:18,155 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-24 04:26:18,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313217236] [2021-02-24 04:26:18,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:26:18,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-24 04:26:18,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901574639] [2021-02-24 04:26:18,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 04:26:18,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:26:18,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 04:26:18,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-02-24 04:26:18,159 INFO L87 Difference]: Start difference. First operand 176 states and 188 transitions. Second operand 11 states. [2021-02-24 04:26:18,850 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-02-24 04:26:19,092 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-02-24 04:26:19,274 WARN L202 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-02-24 04:26:19,515 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-02-24 04:26:20,497 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-02-24 04:26:20,896 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-02-24 04:26:23,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:26:23,094 INFO L93 Difference]: Finished difference Result 498 states and 556 transitions. [2021-02-24 04:26:23,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-24 04:26:23,096 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2021-02-24 04:26:23,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:26:23,103 INFO L225 Difference]: With dead ends: 498 [2021-02-24 04:26:23,103 INFO L226 Difference]: Without dead ends: 347 [2021-02-24 04:26:23,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2021-02-24 04:26:23,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-02-24 04:26:23,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 281. [2021-02-24 04:26:23,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2021-02-24 04:26:23,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 312 transitions. [2021-02-24 04:26:23,185 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 312 transitions. Word has length 67 [2021-02-24 04:26:23,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:26:23,185 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 312 transitions. [2021-02-24 04:26:23,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 04:26:23,186 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 312 transitions. [2021-02-24 04:26:23,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-02-24 04:26:23,191 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:26:23,191 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] [2021-02-24 04:26:23,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:26:23,192 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:26:23,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:26:23,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1463114991, now seen corresponding path program 1 times [2021-02-24 04:26:23,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:26:23,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788737112] [2021-02-24 04:26:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:26:23,199 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:26:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:23,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:23,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:23,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:23,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:23,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:26:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:23,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:23,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:23,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-24 04:26:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:23,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:23,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:23,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-24 04:26:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:23,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:23,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:23,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:26:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:23,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:23,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:23,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 04:26:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:23,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:23,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:23,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:26:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:23,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:23,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:23,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 04:26:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:23,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:23,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:23,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:23,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:23,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:26:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:23,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:23,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:23,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-24 04:26:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:23,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:23,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:23,453 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-24 04:26:23,454 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-24 04:26:23,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:23,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:23,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:26:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:23,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:23,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:23,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:23,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:26:23,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-02-24 04:26:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:23,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:23,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:23,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:26:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:23,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:23,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:23,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-24 04:26:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:23,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:23,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:23,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:26:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:23,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:23,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:23,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-24 04:26:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:23,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:23,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:23,616 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-02-24 04:26:23,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788737112] [2021-02-24 04:26:23,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:26:23,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 04:26:23,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444612922] [2021-02-24 04:26:23,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 04:26:23,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:26:23,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 04:26:23,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-24 04:26:23,619 INFO L87 Difference]: Start difference. First operand 281 states and 312 transitions. Second operand 7 states. [2021-02-24 04:26:25,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:26:25,237 INFO L93 Difference]: Finished difference Result 515 states and 572 transitions. [2021-02-24 04:26:25,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 04:26:25,239 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2021-02-24 04:26:25,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:26:25,252 INFO L225 Difference]: With dead ends: 515 [2021-02-24 04:26:25,252 INFO L226 Difference]: Without dead ends: 290 [2021-02-24 04:26:25,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-02-24 04:26:25,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-02-24 04:26:25,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 287. [2021-02-24 04:26:25,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-02-24 04:26:25,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 318 transitions. [2021-02-24 04:26:25,324 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 318 transitions. Word has length 142 [2021-02-24 04:26:25,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:26:25,325 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 318 transitions. [2021-02-24 04:26:25,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 04:26:25,325 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 318 transitions. [2021-02-24 04:26:25,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-24 04:26:25,329 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:26:25,329 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] [2021-02-24 04:26:25,329 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:26:25,330 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:26:25,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:26:25,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1214229285, now seen corresponding path program 1 times [2021-02-24 04:26:25,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:26:25,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993718863] [2021-02-24 04:26:25,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:26:25,336 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:26:25,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:25,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:26:25,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:26:25,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:26:25,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:25,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:26:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:25,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:25,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:26:25,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:26:25,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-24 04:26:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:25,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:25,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-24 04:26:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:25,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:25,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:26:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:25,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:25,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 04:26:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:25,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:25,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:26:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:25,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:25,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 04:26:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:25,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:26:25,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:26:25,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-24 04:26:25,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:26:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:25,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:25,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:26:25,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-24 04:26:25,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-24 04:26:25,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-24 04:26:25,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:26:25,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-24 04:26:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:25,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:26:25,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:26:25,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:25,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:26:25,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:26:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:26,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:26,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:26,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:26,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:26:26,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:26,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-24 04:26:26,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:26,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-24 04:26:26,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:26,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-24 04:26:26,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:26,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:26:26,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 04:26:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:26,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:26,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:26,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:26:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:26,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:26,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:26,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-24 04:26:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:26,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:26,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:26,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:26:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:26,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:26,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:26,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-24 04:26:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:26,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:26,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 62 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-02-24 04:26:26,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993718863] [2021-02-24 04:26:26,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:26:26,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-24 04:26:26,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262363559] [2021-02-24 04:26:26,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-24 04:26:26,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:26:26,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-24 04:26:26,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-02-24 04:26:26,368 INFO L87 Difference]: Start difference. First operand 287 states and 318 transitions. Second operand 22 states. [2021-02-24 04:26:27,712 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-02-24 04:26:28,043 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-02-24 04:26:28,253 WARN L202 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-02-24 04:26:28,456 WARN L202 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-02-24 04:26:28,926 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-02-24 04:26:29,298 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-02-24 04:26:29,493 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-02-24 04:26:29,699 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-02-24 04:26:29,885 WARN L202 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-02-24 04:26:30,086 WARN L202 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-02-24 04:26:30,298 WARN L202 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-02-24 04:26:30,526 WARN L202 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-02-24 04:26:30,852 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-02-24 04:26:31,065 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-02-24 04:26:32,306 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-02-24 04:26:32,467 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-02-24 04:26:32,619 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-02-24 04:26:32,778 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-02-24 04:26:32,927 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-02-24 04:26:33,080 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-02-24 04:26:33,487 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-02-24 04:26:33,648 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 04:26:33,861 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-24 04:26:34,169 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-02-24 04:26:34,348 WARN L202 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-02-24 04:26:34,511 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-02-24 04:26:34,696 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-02-24 04:26:34,898 WARN L202 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-02-24 04:26:35,105 WARN L202 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-02-24 04:26:35,529 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-02-24 04:26:37,785 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-02-24 04:26:38,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:26:38,663 INFO L93 Difference]: Finished difference Result 733 states and 808 transitions. [2021-02-24 04:26:38,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-02-24 04:26:38,665 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 148 [2021-02-24 04:26:38,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:26:38,669 INFO L225 Difference]: With dead ends: 733 [2021-02-24 04:26:38,669 INFO L226 Difference]: Without dead ends: 406 [2021-02-24 04:26:38,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1778 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1205, Invalid=4957, Unknown=0, NotChecked=0, Total=6162 [2021-02-24 04:26:38,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-02-24 04:26:38,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 293. [2021-02-24 04:26:38,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2021-02-24 04:26:38,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 316 transitions. [2021-02-24 04:26:38,734 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 316 transitions. Word has length 148 [2021-02-24 04:26:38,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:26:38,735 INFO L480 AbstractCegarLoop]: Abstraction has 293 states and 316 transitions. [2021-02-24 04:26:38,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-24 04:26:38,735 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 316 transitions. [2021-02-24 04:26:38,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-02-24 04:26:38,737 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:26:38,738 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] [2021-02-24 04:26:38,738 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 04:26:38,738 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:26:38,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:26:38,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1707521281, now seen corresponding path program 1 times [2021-02-24 04:26:38,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:26:38,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320726892] [2021-02-24 04:26:38,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:26:38,762 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:26:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:26:38,802 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:26:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:26:38,835 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:26:38,897 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 04:26:38,898 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 04:26:38,898 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 04:26:38,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:26:38 BoogieIcfgContainer [2021-02-24 04:26:38,928 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:26:38,929 INFO L168 Benchmark]: Toolchain (without parser) took 25872.01 ms. Allocated memory was 159.4 MB in the beginning and 335.5 MB in the end (delta: 176.2 MB). Free memory was 134.0 MB in the beginning and 293.6 MB in the end (delta: -159.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. [2021-02-24 04:26:38,930 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 159.4 MB. Free memory is still 134.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:26:38,930 INFO L168 Benchmark]: CACSL2BoogieTranslator took 813.23 ms. Allocated memory is still 159.4 MB. Free memory was 132.8 MB in the beginning and 136.9 MB in the end (delta: -4.1 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:26:38,931 INFO L168 Benchmark]: Boogie Preprocessor took 93.53 ms. Allocated memory is still 159.4 MB. Free memory was 136.4 MB in the beginning and 133.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:26:38,931 INFO L168 Benchmark]: RCFGBuilder took 1331.56 ms. Allocated memory is still 159.4 MB. Free memory was 133.2 MB in the beginning and 128.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 59.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:26:38,932 INFO L168 Benchmark]: TraceAbstraction took 23609.78 ms. Allocated memory was 159.4 MB in the beginning and 335.5 MB in the end (delta: 176.2 MB). Free memory was 128.4 MB in the beginning and 293.6 MB in the end (delta: -165.3 MB). Peak memory consumption was 10.9 MB. Max. memory is 8.0 GB. [2021-02-24 04:26:38,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 159.4 MB. Free memory is still 134.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 813.23 ms. Allocated memory is still 159.4 MB. Free memory was 132.8 MB in the beginning and 136.9 MB in the end (delta: -4.1 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 93.53 ms. Allocated memory is still 159.4 MB. Free memory was 136.4 MB in the beginning and 133.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1331.56 ms. Allocated memory is still 159.4 MB. Free memory was 133.2 MB in the beginning and 128.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 59.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 23609.78 ms. Allocated memory was 159.4 MB in the beginning and 335.5 MB in the end (delta: 176.2 MB). Free memory was 128.4 MB in the beginning and 293.6 MB in the end (delta: -165.3 MB). Peak memory consumption was 10.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 669]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L665] struct ldv_list_head mutexes = { &(mutexes), &(mutexes) }; [L692] CALL foo() [L681] FCALL ldv_initialize() [L682] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) [L576] void *ptr = malloc(size); [L577] CALL assume_abort_if_not(ptr!=0) [L565] COND FALSE !(!cond) [L577] RET assume_abort_if_not(ptr!=0) [L578] return ptr; [L682] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) [L682] struct mutex *m1 = ldv_successful_malloc(sizeof(struct mutex)); [L683] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) [L576] void *ptr = malloc(size); [L577] CALL assume_abort_if_not(ptr!=0) [L565] COND FALSE !(!cond) [L577] RET assume_abort_if_not(ptr!=0) [L578] return ptr; [L683] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) [L683] struct mutex *m2 = ldv_successful_malloc(sizeof(struct mutex)); [L684] CALL mutex_lock(m1) [L669] CALL ldv_is_in_set(m, &mutexes) [L654] struct ldv_list_element *m; [L655] EXPR (s)->next [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) [L655] COND FALSE !(&m->list != (s)) [L660] return 0; [L669] RET ldv_is_in_set(m, &mutexes) [L669] COND FALSE !(ldv_is_in_set(m, &mutexes)) [L670] CALL ldv_set_add(m, &mutexes) [L636] CALL, EXPR ldv_is_in_set(new, s) [L654] struct ldv_list_element *m; [L655] EXPR (s)->next [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) [L655] COND FALSE !(&m->list != (s)) [L660] return 0; [L636] RET, EXPR ldv_is_in_set(new, s) [L636] COND TRUE !ldv_is_in_set(new, s) [L637] struct ldv_list_element *le; [L638] CALL, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) [L576] void *ptr = malloc(size); [L577] CALL assume_abort_if_not(ptr!=0) [L565] COND FALSE !(!cond) [L577] RET assume_abort_if_not(ptr!=0) [L578] return ptr; [L638] RET, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) [L638] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L639] le->e = new [L640] CALL ldv_list_add(&le->list, s) [L608] EXPR head->next [L608] CALL __ldv_list_add(new, head, head->next) [L596] next->prev = new [L597] new->next = next [L598] new->prev = prev [L599] prev->next = new [L608] RET __ldv_list_add(new, head, head->next) [L640] RET ldv_list_add(&le->list, s) [L670] RET ldv_set_add(m, &mutexes) [L684] RET mutex_lock(m1) [L685] CALL mutex_lock(m1) [L669] CALL ldv_is_in_set(m, &mutexes) [L654] struct ldv_list_element *m; [L655] EXPR (s)->next [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) [L655] COND TRUE &m->list != (s) [L656] EXPR m->e [L656] COND TRUE m->e == e [L657] return 1; [L669] RET ldv_is_in_set(m, &mutexes) [L669] COND TRUE ldv_is_in_set(m, &mutexes) [L669] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 26 procedures, 227 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.4s, OverallIterations: 5, TraceHistogramMax: 5, AutomataDifference: 20.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 716 SDtfs, 2280 SDslu, 597 SDs, 0 SdLazy, 3890 SolverSat, 538 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1908 ImplicationChecksByTransitivity, 10.4s 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: 0.2s 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...