/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:10:07,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:10:07,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:10:07,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:10:07,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:10:07,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:10:07,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:10:07,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:10:07,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:10:07,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:10:07,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:10:07,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:10:07,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:10:07,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:10:07,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:10:07,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:10:07,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:10:07,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:10:07,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:10:07,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:10:07,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:10:07,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:10:07,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:10:07,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:10:07,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:10:07,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:10:07,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:10:07,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:10:07,250 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:10:07,272 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:10:07,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:10:07,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:10:07,277 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:10:07,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:10:07,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:10:07,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:10:07,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:10:07,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:10:07,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:10:07,280 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:10:07,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:10:07,281 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:10:07,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:10:07,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:10:07,282 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:10:07,282 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:10:07,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:10:07,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:10:07,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:10:07,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:10:07,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:10:07,284 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:10:07,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:10:07,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:10:07,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:10:07,724 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:10:07,725 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:10:07,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2021-02-23 18:10:07,812 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b23d97fe/6e1259e521624e9c96f949a573328614/FLAG0feaabd95 [2021-02-23 18:10:08,492 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:10:08,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2021-02-23 18:10:08,511 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b23d97fe/6e1259e521624e9c96f949a573328614/FLAG0feaabd95 [2021-02-23 18:10:08,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b23d97fe/6e1259e521624e9c96f949a573328614 [2021-02-23 18:10:08,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:10:08,784 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:10:08,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:10:08,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:10:08,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:10:08,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:10:08" (1/1) ... [2021-02-23 18:10:08,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71a3e020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:10:08, skipping insertion in model container [2021-02-23 18:10:08,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:10:08" (1/1) ... [2021-02-23 18:10:08,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:10:08,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:10:09,184 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] [2021-02-23 18:10:09,189 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] [2021-02-23 18:10:09,191 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] [2021-02-23 18:10:09,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:10:09,204 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:10:09,261 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] [2021-02-23 18:10:09,262 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] [2021-02-23 18:10:09,263 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] [2021-02-23 18:10:09,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:10:09,430 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:10:09,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:10:09 WrapperNode [2021-02-23 18:10:09,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:10:09,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:10:09,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:10:09,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:10:09,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:10:09" (1/1) ... [2021-02-23 18:10:09,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:10:09" (1/1) ... [2021-02-23 18:10:09,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:10:09" (1/1) ... [2021-02-23 18:10:09,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:10:09" (1/1) ... [2021-02-23 18:10:09,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:10:09" (1/1) ... [2021-02-23 18:10:09,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:10:09" (1/1) ... [2021-02-23 18:10:09,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:10:09" (1/1) ... [2021-02-23 18:10:09,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:10:09,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:10:09,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:10:09,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:10:09,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:10:09" (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 [2021-02-23 18:10:09,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:10:09,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:10:09,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-23 18:10:09,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-23 18:10:09,683 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:10:09,683 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:10:09,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-02-23 18:10:09,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2021-02-23 18:10:09,684 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-02-23 18:10:09,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-02-23 18:10:09,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-02-23 18:10:09,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-02-23 18:10:09,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-02-23 18:10:09,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-02-23 18:10:09,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2021-02-23 18:10:09,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2021-02-23 18:10:09,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2021-02-23 18:10:09,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2021-02-23 18:10:09,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2021-02-23 18:10:09,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2021-02-23 18:10:09,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2021-02-23 18:10:09,688 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-02-23 18:10:09,688 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-02-23 18:10:09,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-02-23 18:10:09,688 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-02-23 18:10:09,689 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:10:09,689 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-23 18:10:09,689 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-23 18:10:09,689 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 18:10:09,689 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 18:10:09,689 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 18:10:09,689 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 18:10:09,690 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 18:10:09,690 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 18:10:09,690 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 18:10:09,690 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 18:10:09,690 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 18:10:09,690 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 18:10:09,690 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 18:10:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 18:10:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 18:10:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 18:10:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 18:10:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 18:10:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 18:10:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 18:10:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 18:10:09,692 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 18:10:09,692 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 18:10:09,692 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 18:10:09,692 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 18:10:09,692 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 18:10:09,692 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 18:10:09,692 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 18:10:09,693 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 18:10:09,693 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 18:10:09,694 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 18:10:09,694 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 18:10:09,694 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 18:10:09,694 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 18:10:09,695 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 18:10:09,695 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 18:10:09,695 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 18:10:09,695 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 18:10:09,695 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 18:10:09,695 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 18:10:09,696 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 18:10:09,696 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 18:10:09,696 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 18:10:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 18:10:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 18:10:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 18:10:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 18:10:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 18:10:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 18:10:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 18:10:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 18:10:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 18:10:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:10:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 18:10:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 18:10:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 18:10:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-23 18:10:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 18:10:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 18:10:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 18:10:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:10:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 18:10:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 18:10:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 18:10:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 18:10:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 18:10:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 18:10:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 18:10:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 18:10:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 18:10:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 18:10:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 18:10:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 18:10:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 18:10:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 18:10:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 18:10:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 18:10:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 18:10:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 18:10:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 18:10:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 18:10:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 18:10:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 18:10:09,705 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 18:10:09,705 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 18:10:09,705 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 18:10:09,705 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 18:10:09,705 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 18:10:09,705 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 18:10:09,706 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 18:10:09,706 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 18:10:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 18:10:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 18:10:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 18:10:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 18:10:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 18:10:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 18:10:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 18:10:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 18:10:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 18:10:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 18:10:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 18:10:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:10:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 18:10:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 18:10:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:10:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:10:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:10:09,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:10:09,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-02-23 18:10:09,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:10:09,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2021-02-23 18:10:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-02-23 18:10:09,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 18:10:09,716 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-02-23 18:10:09,716 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-02-23 18:10:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-02-23 18:10:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 18:10:09,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-02-23 18:10:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-02-23 18:10:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2021-02-23 18:10:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2021-02-23 18:10:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2021-02-23 18:10:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2021-02-23 18:10:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2021-02-23 18:10:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2021-02-23 18:10:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:10:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2021-02-23 18:10:09,724 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-02-23 18:10:09,724 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-02-23 18:10:09,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-02-23 18:10:09,724 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-02-23 18:10:09,724 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:10:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:10:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:10:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-02-23 18:10:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:10:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:10:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:10:10,964 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:10:10,965 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 18:10:10,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:10:10 BoogieIcfgContainer [2021-02-23 18:10:10,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:10:10,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:10:10,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:10:10,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:10:10,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:10:08" (1/3) ... [2021-02-23 18:10:10,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23474c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:10:10, skipping insertion in model container [2021-02-23 18:10:10,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:10:09" (2/3) ... [2021-02-23 18:10:10,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23474c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:10:10, skipping insertion in model container [2021-02-23 18:10:10,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:10:10" (3/3) ... [2021-02-23 18:10:10,976 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2021-02-23 18:10:10,983 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:10:10,988 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-02-23 18:10:11,006 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-02-23 18:10:11,031 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:10:11,032 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:10:11,032 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:10:11,032 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:10:11,032 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:10:11,032 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:10:11,032 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:10:11,033 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:10:11,054 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2021-02-23 18:10:11,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-23 18:10:11,066 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:10:11,067 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] [2021-02-23 18:10:11,068 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:10:11,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:10:11,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1683504900, now seen corresponding path program 1 times [2021-02-23 18:10:11,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:10:11,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945069567] [2021-02-23 18:10:11,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:10:11,207 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:10:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:11,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:11,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:11,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:11,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:11,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:11,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:11,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:10:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:11,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:11,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:11,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 18:10:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:11,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:11,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:11,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-23 18:10:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:11,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:11,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:11,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 18:10:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:11,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:11,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:11,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-23 18:10:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:11,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:11,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:11,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 18:10:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:11,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:11,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:11,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-23 18:10:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:11,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:11,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:11,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:11,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:10:11,779 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-23 18:10:11,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945069567] [2021-02-23 18:10:11,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:10:11,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:10:11,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601111482] [2021-02-23 18:10:11,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:10:11,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:10:11,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:10:11,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:10:11,807 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 6 states. [2021-02-23 18:10:13,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:10:13,137 INFO L93 Difference]: Finished difference Result 374 states and 428 transitions. [2021-02-23 18:10:13,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:10:13,139 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2021-02-23 18:10:13,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:10:13,153 INFO L225 Difference]: With dead ends: 374 [2021-02-23 18:10:13,153 INFO L226 Difference]: Without dead ends: 196 [2021-02-23 18:10:13,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-02-23 18:10:13,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-02-23 18:10:13,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 176. [2021-02-23 18:10:13,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2021-02-23 18:10:13,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 188 transitions. [2021-02-23 18:10:13,240 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 188 transitions. Word has length 64 [2021-02-23 18:10:13,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:10:13,241 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 188 transitions. [2021-02-23 18:10:13,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:10:13,242 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 188 transitions. [2021-02-23 18:10:13,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-02-23 18:10:13,245 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:10:13,245 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] [2021-02-23 18:10:13,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:10:13,245 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:10:13,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:10:13,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1311659407, now seen corresponding path program 1 times [2021-02-23 18:10:13,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:10:13,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710184801] [2021-02-23 18:10:13,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:10:13,253 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:10:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:13,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:13,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:10:13,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:13,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:10:13,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:13,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:10:13,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:13,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:10:13,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:13,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:13,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:10:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:13,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:13,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:13,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:13,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:13,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:13,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:10:13,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 18:10:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:13,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:13,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:13,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-23 18:10:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:13,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:13,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:13,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 18:10:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:13,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:13,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:13,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-23 18:10:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:13,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:13,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:13,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 18:10:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:13,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:13,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:13,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-23 18:10:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:13,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:13,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:13,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:13,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:10:13,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:13,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 18:10:13,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:13,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 18:10:13,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:13,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 18:10:13,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:13,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 18:10:13,749 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-23 18:10:13,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710184801] [2021-02-23 18:10:13,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:10:13,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 18:10:13,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733407981] [2021-02-23 18:10:13,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 18:10:13,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:10:13,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 18:10:13,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-02-23 18:10:13,756 INFO L87 Difference]: Start difference. First operand 176 states and 188 transitions. Second operand 11 states. [2021-02-23 18:10:17,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:10:17,624 INFO L93 Difference]: Finished difference Result 498 states and 556 transitions. [2021-02-23 18:10:17,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-23 18:10:17,625 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2021-02-23 18:10:17,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:10:17,632 INFO L225 Difference]: With dead ends: 498 [2021-02-23 18:10:17,633 INFO L226 Difference]: Without dead ends: 347 [2021-02-23 18:10:17,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2021-02-23 18:10:17,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-02-23 18:10:17,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 281. [2021-02-23 18:10:17,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2021-02-23 18:10:17,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 312 transitions. [2021-02-23 18:10:17,726 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 312 transitions. Word has length 67 [2021-02-23 18:10:17,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:10:17,727 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 312 transitions. [2021-02-23 18:10:17,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 18:10:17,727 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 312 transitions. [2021-02-23 18:10:17,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-02-23 18:10:17,732 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:10:17,733 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] [2021-02-23 18:10:17,733 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:10:17,733 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:10:17,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:10:17,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1463114991, now seen corresponding path program 1 times [2021-02-23 18:10:17,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:10:17,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843556617] [2021-02-23 18:10:17,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:10:17,740 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:10:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:17,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:17,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:17,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:17,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:17,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:10:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:17,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:17,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:17,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 18:10:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:17,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:17,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:17,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-23 18:10:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:17,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:17,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:17,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 18:10:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:17,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:17,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:17,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-23 18:10:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:17,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:17,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:17,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 18:10:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:17,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:17,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:17,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 18:10:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:17,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:17,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:17,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:17,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:17,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 18:10:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:17,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:17,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:17,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-23 18:10:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:17,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:18,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:18,003 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-23 18:10:18,004 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-23 18:10:18,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:18,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:18,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 18:10:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:18,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:18,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:18,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:18,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:10:18,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-02-23 18:10:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:18,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:18,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:18,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 18:10:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:18,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:18,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:18,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-23 18:10:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:18,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:18,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:18,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 18:10:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:18,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:18,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:18,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 18:10:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:18,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:18,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:18,130 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-02-23 18:10:18,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843556617] [2021-02-23 18:10:18,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:10:18,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 18:10:18,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543918112] [2021-02-23 18:10:18,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 18:10:18,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:10:18,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 18:10:18,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 18:10:18,133 INFO L87 Difference]: Start difference. First operand 281 states and 312 transitions. Second operand 7 states. [2021-02-23 18:10:19,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:10:19,311 INFO L93 Difference]: Finished difference Result 515 states and 572 transitions. [2021-02-23 18:10:19,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 18:10:19,312 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2021-02-23 18:10:19,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:10:19,316 INFO L225 Difference]: With dead ends: 515 [2021-02-23 18:10:19,316 INFO L226 Difference]: Without dead ends: 290 [2021-02-23 18:10:19,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-02-23 18:10:19,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-02-23 18:10:19,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 287. [2021-02-23 18:10:19,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-02-23 18:10:19,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 318 transitions. [2021-02-23 18:10:19,399 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 318 transitions. Word has length 142 [2021-02-23 18:10:19,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:10:19,403 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 318 transitions. [2021-02-23 18:10:19,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 18:10:19,404 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 318 transitions. [2021-02-23 18:10:19,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 18:10:19,416 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:10:19,417 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] [2021-02-23 18:10:19,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:10:19,417 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:10:19,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:10:19,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1214229285, now seen corresponding path program 1 times [2021-02-23 18:10:19,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:10:19,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803084019] [2021-02-23 18:10:19,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:10:19,427 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:10:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:19,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:19,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:10:19,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:19,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:10:19,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:19,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:10:19,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:19,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:19,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:10:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:19,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:19,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:19,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:19,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:19,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:19,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:10:19,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 18:10:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:19,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:19,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:19,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-23 18:10:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:19,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:19,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:19,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 18:10:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:19,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:19,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:19,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-23 18:10:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:19,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:19,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:19,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 18:10:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:19,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:19,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:19,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 18:10:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:19,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:19,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:10:19,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:19,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:10:19,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:19,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:10:19,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 18:10:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:19,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:19,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:19,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:19,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:10:19,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:19,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 18:10:19,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:19,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 18:10:19,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:19,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 18:10:19,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:19,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:10:19,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-23 18:10:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:19,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:19,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:10:19,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:19,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:10:20,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:20,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 18:10:20,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 18:10:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:20,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:20,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:20,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:20,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:10:20,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:20,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 18:10:20,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:20,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 18:10:20,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:20,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 18:10:20,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:20,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 18:10:20,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 18:10:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:20,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:20,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:20,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 18:10:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:20,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:20,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:20,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-23 18:10:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:20,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:20,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:20,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 18:10:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:20,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:20,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:20,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 18:10:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:10:20,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:10:20,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:10:20,319 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 62 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-02-23 18:10:20,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803084019] [2021-02-23 18:10:20,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:10:20,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-23 18:10:20,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808944011] [2021-02-23 18:10:20,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-23 18:10:20,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:10:20,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-23 18:10:20,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-02-23 18:10:20,322 INFO L87 Difference]: Start difference. First operand 287 states and 318 transitions. Second operand 22 states. [2021-02-23 18:10:21,686 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-02-23 18:10:21,858 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-02-23 18:10:22,752 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-02-23 18:10:23,038 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-02-23 18:10:23,200 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-02-23 18:10:23,386 WARN L202 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-02-23 18:10:25,072 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-02-23 18:10:26,535 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-02-23 18:10:26,686 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-02-23 18:10:26,863 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-02-23 18:10:29,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:10:29,528 INFO L93 Difference]: Finished difference Result 733 states and 808 transitions. [2021-02-23 18:10:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-02-23 18:10:29,529 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 148 [2021-02-23 18:10:29,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:10:29,533 INFO L225 Difference]: With dead ends: 733 [2021-02-23 18:10:29,533 INFO L226 Difference]: Without dead ends: 406 [2021-02-23 18:10:29,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1778 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1205, Invalid=4957, Unknown=0, NotChecked=0, Total=6162 [2021-02-23 18:10:29,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-02-23 18:10:29,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 293. [2021-02-23 18:10:29,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2021-02-23 18:10:29,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 316 transitions. [2021-02-23 18:10:29,594 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 316 transitions. Word has length 148 [2021-02-23 18:10:29,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:10:29,595 INFO L480 AbstractCegarLoop]: Abstraction has 293 states and 316 transitions. [2021-02-23 18:10:29,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-23 18:10:29,595 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 316 transitions. [2021-02-23 18:10:29,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-02-23 18:10:29,597 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:10:29,597 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] [2021-02-23 18:10:29,598 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:10:29,598 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:10:29,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:10:29,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1707521281, now seen corresponding path program 1 times [2021-02-23 18:10:29,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:10:29,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385328458] [2021-02-23 18:10:29,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:10:29,603 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:10:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:10:29,645 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:10:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:10:29,680 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:10:29,743 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:10:29,743 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:10:29,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 18:10:29,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:10:29 BoogieIcfgContainer [2021-02-23 18:10:29,768 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:10:29,769 INFO L168 Benchmark]: Toolchain (without parser) took 20993.96 ms. Allocated memory was 151.0 MB in the beginning and 348.1 MB in the end (delta: 197.1 MB). Free memory was 125.7 MB in the beginning and 177.6 MB in the end (delta: -51.9 MB). Peak memory consumption was 146.2 MB. Max. memory is 8.0 GB. [2021-02-23 18:10:29,769 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:10:29,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 643.71 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 127.2 MB in the end (delta: -2.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 8.0 GB. [2021-02-23 18:10:29,770 INFO L168 Benchmark]: Boogie Preprocessor took 141.27 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 123.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:10:29,771 INFO L168 Benchmark]: RCFGBuilder took 1393.47 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 57.0 MB in the end (delta: 66.6 MB). Peak memory consumption was 66.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:10:29,771 INFO L168 Benchmark]: TraceAbstraction took 18798.53 ms. Allocated memory was 151.0 MB in the beginning and 348.1 MB in the end (delta: 197.1 MB). Free memory was 56.4 MB in the beginning and 177.6 MB in the end (delta: -121.2 MB). Peak memory consumption was 76.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:10:29,773 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 643.71 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 127.2 MB in the end (delta: -2.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 141.27 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 123.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1393.47 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 57.0 MB in the end (delta: 66.6 MB). Peak memory consumption was 66.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18798.53 ms. Allocated memory was 151.0 MB in the beginning and 348.1 MB in the end (delta: 197.1 MB). Free memory was 56.4 MB in the beginning and 177.6 MB in the end (delta: -121.2 MB). Peak memory consumption was 76.5 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: 18.7s, OverallIterations: 5, TraceHistogramMax: 5, AutomataDifference: 15.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 714 SDtfs, 2280 SDslu, 588 SDs, 0 SdLazy, 3890 SolverSat, 538 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1908 ImplicationChecksByTransitivity, 7.9s 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...