/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 0.2.0-7d8eed3 [2020-11-07 00:56:48,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:56:48,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:56:48,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:56:48,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:56:48,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:56:48,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:56:48,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:56:48,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:56:48,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:56:48,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:56:48,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:56:48,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:56:48,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:56:48,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:56:48,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:56:48,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:56:48,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:56:48,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:56:48,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:56:48,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:56:48,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:56:48,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:56:48,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:56:48,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 00:56:48,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 00:56:48,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 00:56:48,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 00:56:48,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 00:56:48,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 00:56:48,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 00:56:48,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 00:56:48,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 00:56:48,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 00:56:48,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 00:56:48,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 00:56:48,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 00:56:48,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 00:56:48,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:56:48,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:56:48,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:56:48,793 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:56:48,805 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:56:48,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:56:48,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:56:48,808 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:56:48,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:56:48,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:56:48,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:56:48,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:56:48,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:56:48,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:56:48,809 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:56:48,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:56:48,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:56:48,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:56:48,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:56:48,810 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:56:48,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:56:48,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:56:48,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:56:48,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:56:48,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:56:48,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:56:48,811 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:56:49,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:56:49,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:56:49,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:56:49,225 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:56:49,225 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:56:49,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-11-07 00:56:49,317 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8593a5f59/43b62ffed86041e98c0e8945f697effc/FLAG24c5a7efc [2020-11-07 00:56:50,063 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:56:50,064 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-11-07 00:56:50,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8593a5f59/43b62ffed86041e98c0e8945f697effc/FLAG24c5a7efc [2020-11-07 00:56:50,314 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8593a5f59/43b62ffed86041e98c0e8945f697effc [2020-11-07 00:56:50,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:56:50,343 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:56:50,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:56:50,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:56:50,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:56:50,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:50" (1/1) ... [2020-11-07 00:56:50,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17945653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:50, skipping insertion in model container [2020-11-07 00:56:50,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:50" (1/1) ... [2020-11-07 00:56:50,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:56:50,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:56:50,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:56:50,877 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:56:51,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:56:51,102 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:56:51,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:51 WrapperNode [2020-11-07 00:56:51,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:56:51,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:56:51,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:56:51,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:56:51,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:51" (1/1) ... [2020-11-07 00:56:51,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:51" (1/1) ... [2020-11-07 00:56:51,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:51" (1/1) ... [2020-11-07 00:56:51,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:51" (1/1) ... [2020-11-07 00:56:51,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:51" (1/1) ... [2020-11-07 00:56:51,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:51" (1/1) ... [2020-11-07 00:56:51,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:51" (1/1) ... [2020-11-07 00:56:51,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:56:51,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:56:51,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:56:51,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:56:51,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:51" (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 [2020-11-07 00:56:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:56:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:56:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-07 00:56:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-07 00:56:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:56:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 00:56:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-11-07 00:56:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2020-11-07 00:56:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-11-07 00:56:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-11-07 00:56:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-11-07 00:56:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-11-07 00:56:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-11-07 00:56:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-11-07 00:56:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2020-11-07 00:56:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2020-11-07 00:56:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-11-07 00:56:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2020-11-07 00:56:51,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2020-11-07 00:56:51,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2020-11-07 00:56:51,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-11-07 00:56:51,268 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-11-07 00:56:51,268 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-11-07 00:56:51,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-11-07 00:56:51,269 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-11-07 00:56:51,269 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:56:51,269 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-07 00:56:51,269 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-07 00:56:51,269 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-07 00:56:51,270 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-07 00:56:51,270 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-07 00:56:51,270 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-07 00:56:51,270 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-07 00:56:51,270 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-07 00:56:51,270 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-07 00:56:51,271 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-07 00:56:51,271 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-07 00:56:51,271 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-07 00:56:51,271 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-07 00:56:51,271 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-07 00:56:51,271 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-07 00:56:51,271 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-07 00:56:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-07 00:56:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-07 00:56:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-07 00:56:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-07 00:56:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-07 00:56:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-07 00:56:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-07 00:56:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-07 00:56:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-07 00:56:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-07 00:56:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-07 00:56:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-07 00:56:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-07 00:56:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-07 00:56:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-07 00:56:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-07 00:56:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-07 00:56:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-07 00:56:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-07 00:56:51,275 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-07 00:56:51,275 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-07 00:56:51,275 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-07 00:56:51,275 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-07 00:56:51,275 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-07 00:56:51,275 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-07 00:56:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-07 00:56:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-07 00:56:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-07 00:56:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-07 00:56:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-07 00:56:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-07 00:56:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-07 00:56:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-07 00:56:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-07 00:56:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-07 00:56:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-07 00:56:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 00:56:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-07 00:56:51,278 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-07 00:56:51,278 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-07 00:56:51,278 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-07 00:56:51,278 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-07 00:56:51,278 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-07 00:56:51,278 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-07 00:56:51,279 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:56:51,279 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-07 00:56:51,279 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-07 00:56:51,279 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 00:56:51,279 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-07 00:56:51,279 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-07 00:56:51,279 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-07 00:56:51,280 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-07 00:56:51,280 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-07 00:56:51,280 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-07 00:56:51,280 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-07 00:56:51,280 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-07 00:56:51,280 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-07 00:56:51,281 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-07 00:56:51,281 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-07 00:56:51,281 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-07 00:56:51,281 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-07 00:56:51,281 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-07 00:56:51,281 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-07 00:56:51,281 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-07 00:56:51,282 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-07 00:56:51,282 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-07 00:56:51,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-07 00:56:51,282 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-07 00:56:51,282 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-07 00:56:51,282 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-07 00:56:51,282 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-07 00:56:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-07 00:56:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-07 00:56:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-07 00:56:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-07 00:56:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-07 00:56:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-07 00:56:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-07 00:56:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-07 00:56:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-07 00:56:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-07 00:56:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-07 00:56:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-07 00:56:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-07 00:56:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-07 00:56:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-07 00:56:51,285 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:56:51,285 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 00:56:51,285 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 00:56:51,285 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:56:51,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:56:51,285 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 00:56:51,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 00:56:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-11-07 00:56:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 00:56:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2020-11-07 00:56:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-11-07 00:56:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-07 00:56:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-11-07 00:56:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-11-07 00:56:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-11-07 00:56:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-07 00:56:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-11-07 00:56:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-11-07 00:56:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2020-11-07 00:56:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2020-11-07 00:56:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-11-07 00:56:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2020-11-07 00:56:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2020-11-07 00:56:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2020-11-07 00:56:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:56:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-11-07 00:56:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-11-07 00:56:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-11-07 00:56:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-11-07 00:56:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-11-07 00:56:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:56:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:56:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:56:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-11-07 00:56:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:56:51,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:56:51,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:56:52,056 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:56:52,057 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-07 00:56:52,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:52 BoogieIcfgContainer [2020-11-07 00:56:52,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:56:52,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:56:52,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:56:52,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:56:52,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:56:50" (1/3) ... [2020-11-07 00:56:52,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d2f20a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:52, skipping insertion in model container [2020-11-07 00:56:52,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:51" (2/3) ... [2020-11-07 00:56:52,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d2f20a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:52, skipping insertion in model container [2020-11-07 00:56:52,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:52" (3/3) ... [2020-11-07 00:56:52,069 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2020-11-07 00:56:52,086 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:56:52,091 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:56:52,105 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:56:52,131 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:56:52,131 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:56:52,131 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:56:52,131 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:56:52,131 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:56:52,131 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:56:52,132 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:56:52,132 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:56:52,153 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-11-07 00:56:52,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-07 00:56:52,166 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:56:52,167 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] [2020-11-07 00:56:52,167 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:56:52,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:56:52,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1852376171, now seen corresponding path program 1 times [2020-11-07 00:56:52,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:56:52,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084700646] [2020-11-07 00:56:52,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:56:52,278 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:56:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:52,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:56:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:52,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 00:56:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:52,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-07 00:56:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:52,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 00:56:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:52,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 00:56:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:52,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 00:56:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:52,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-11-07 00:56:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-07 00:56:52,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084700646] [2020-11-07 00:56:52,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:56:52,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:56:52,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782313620] [2020-11-07 00:56:52,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:56:52,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:56:52,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:56:52,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:56:52,642 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 4 states. [2020-11-07 00:56:53,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:56:53,060 INFO L93 Difference]: Finished difference Result 373 states and 431 transitions. [2020-11-07 00:56:53,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:56:53,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-11-07 00:56:53,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:56:53,077 INFO L225 Difference]: With dead ends: 373 [2020-11-07 00:56:53,077 INFO L226 Difference]: Without dead ends: 192 [2020-11-07 00:56:53,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:56:53,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-11-07 00:56:53,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 172. [2020-11-07 00:56:53,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-11-07 00:56:53,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 184 transitions. [2020-11-07 00:56:53,165 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 184 transitions. Word has length 66 [2020-11-07 00:56:53,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:56:53,166 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 184 transitions. [2020-11-07 00:56:53,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:56:53,166 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 184 transitions. [2020-11-07 00:56:53,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-07 00:56:53,170 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:56:53,170 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] [2020-11-07 00:56:53,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:56:53,170 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:56:53,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:56:53,171 INFO L82 PathProgramCache]: Analyzing trace with hash 898138460, now seen corresponding path program 1 times [2020-11-07 00:56:53,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:56:53,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673192631] [2020-11-07 00:56:53,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:56:53,178 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:56:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:53,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:56:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:53,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 00:56:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:53,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-07 00:56:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:53,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 00:56:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:53,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 00:56:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:53,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 00:56:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:53,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-11-07 00:56:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-07 00:56:53,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673192631] [2020-11-07 00:56:53,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:56:53,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 00:56:53,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437810846] [2020-11-07 00:56:53,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 00:56:53,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:56:53,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 00:56:53,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-07 00:56:53,437 INFO L87 Difference]: Start difference. First operand 172 states and 184 transitions. Second operand 6 states. [2020-11-07 00:56:54,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:56:54,144 INFO L93 Difference]: Finished difference Result 201 states and 220 transitions. [2020-11-07 00:56:54,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 00:56:54,145 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-11-07 00:56:54,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:56:54,149 INFO L225 Difference]: With dead ends: 201 [2020-11-07 00:56:54,149 INFO L226 Difference]: Without dead ends: 196 [2020-11-07 00:56:54,151 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 [2020-11-07 00:56:54,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-11-07 00:56:54,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 176. [2020-11-07 00:56:54,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-11-07 00:56:54,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 190 transitions. [2020-11-07 00:56:54,185 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 190 transitions. Word has length 66 [2020-11-07 00:56:54,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:56:54,186 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 190 transitions. [2020-11-07 00:56:54,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 00:56:54,186 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 190 transitions. [2020-11-07 00:56:54,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-07 00:56:54,188 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:56:54,188 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, 1, 1] [2020-11-07 00:56:54,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:56:54,189 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:56:54,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:56:54,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1032759184, now seen corresponding path program 1 times [2020-11-07 00:56:54,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:56:54,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360910471] [2020-11-07 00:56:54,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:56:54,196 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:56:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:54,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:56:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:54,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 00:56:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:54,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-07 00:56:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:54,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 00:56:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:54,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 00:56:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:54,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 00:56:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:54,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-11-07 00:56:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-07 00:56:54,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360910471] [2020-11-07 00:56:54,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:56:54,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-07 00:56:54,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2317818] [2020-11-07 00:56:54,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 00:56:54,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:56:54,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 00:56:54,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-11-07 00:56:54,594 INFO L87 Difference]: Start difference. First operand 176 states and 190 transitions. Second operand 11 states. [2020-11-07 00:56:57,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:56:57,215 INFO L93 Difference]: Finished difference Result 499 states and 562 transitions. [2020-11-07 00:56:57,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-07 00:56:57,215 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-11-07 00:56:57,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:56:57,224 INFO L225 Difference]: With dead ends: 499 [2020-11-07 00:56:57,224 INFO L226 Difference]: Without dead ends: 348 [2020-11-07 00:56:57,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2020-11-07 00:56:57,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-11-07 00:56:57,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 281. [2020-11-07 00:56:57,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-11-07 00:56:57,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 314 transitions. [2020-11-07 00:56:57,319 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 314 transitions. Word has length 69 [2020-11-07 00:56:57,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:56:57,319 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 314 transitions. [2020-11-07 00:56:57,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 00:56:57,320 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 314 transitions. [2020-11-07 00:56:57,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-11-07 00:56:57,323 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:56:57,323 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, 1, 1] [2020-11-07 00:56:57,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 00:56:57,323 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:56:57,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:56:57,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1557786990, now seen corresponding path program 1 times [2020-11-07 00:56:57,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:56:57,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090736527] [2020-11-07 00:56:57,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:56:57,337 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:56:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:57,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:56:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:57,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 00:56:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:57,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-07 00:56:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:57,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 00:56:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:57,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 00:56:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:57,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 00:56:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:57,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 00:56:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:57,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-07 00:56:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:57,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 00:56:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:57,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:56:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:57,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-11-07 00:56:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:57,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-07 00:56:57,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:57,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 00:56:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:57,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:56:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:57,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-11-07 00:56:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:57,672 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-11-07 00:56:57,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090736527] [2020-11-07 00:56:57,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:56:57,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 00:56:57,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375940662] [2020-11-07 00:56:57,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 00:56:57,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:56:57,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 00:56:57,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-07 00:56:57,676 INFO L87 Difference]: Start difference. First operand 281 states and 314 transitions. Second operand 7 states. [2020-11-07 00:56:58,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:56:58,539 INFO L93 Difference]: Finished difference Result 516 states and 576 transitions. [2020-11-07 00:56:58,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 00:56:58,540 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-11-07 00:56:58,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:56:58,543 INFO L225 Difference]: With dead ends: 516 [2020-11-07 00:56:58,544 INFO L226 Difference]: Without dead ends: 290 [2020-11-07 00:56:58,545 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 [2020-11-07 00:56:58,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-11-07 00:56:58,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 287. [2020-11-07 00:56:58,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-07 00:56:58,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 320 transitions. [2020-11-07 00:56:58,608 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 320 transitions. Word has length 144 [2020-11-07 00:56:58,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:56:58,609 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 320 transitions. [2020-11-07 00:56:58,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 00:56:58,609 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 320 transitions. [2020-11-07 00:56:58,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-11-07 00:56:58,612 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:56:58,612 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, 1, 1] [2020-11-07 00:56:58,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 00:56:58,612 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:56:58,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:56:58,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1819153246, now seen corresponding path program 1 times [2020-11-07 00:56:58,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:56:58,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980391094] [2020-11-07 00:56:58,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:56:58,619 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:56:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:58,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:56:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:58,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 00:56:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:58,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-07 00:56:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:58,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 00:56:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:58,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 00:56:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:58,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 00:56:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:58,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 00:56:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:58,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-07 00:56:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:58,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 00:56:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:59,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:56:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:59,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 00:56:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:59,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-07 00:56:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:59,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 00:56:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:59,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:56:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:59,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-11-07 00:56:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 62 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-11-07 00:56:59,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980391094] [2020-11-07 00:56:59,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:56:59,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-11-07 00:56:59,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798599757] [2020-11-07 00:56:59,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-07 00:56:59,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:56:59,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-07 00:56:59,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2020-11-07 00:56:59,383 INFO L87 Difference]: Start difference. First operand 287 states and 320 transitions. Second operand 22 states. [2020-11-07 00:57:07,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:57:07,269 INFO L93 Difference]: Finished difference Result 735 states and 814 transitions. [2020-11-07 00:57:07,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-11-07 00:57:07,273 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 150 [2020-11-07 00:57:07,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:57:07,276 INFO L225 Difference]: With dead ends: 735 [2020-11-07 00:57:07,277 INFO L226 Difference]: Without dead ends: 408 [2020-11-07 00:57:07,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1688 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1202, Invalid=4960, Unknown=0, NotChecked=0, Total=6162 [2020-11-07 00:57:07,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2020-11-07 00:57:07,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 293. [2020-11-07 00:57:07,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-11-07 00:57:07,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 318 transitions. [2020-11-07 00:57:07,337 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 318 transitions. Word has length 150 [2020-11-07 00:57:07,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:57:07,337 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 318 transitions. [2020-11-07 00:57:07,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-07 00:57:07,338 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 318 transitions. [2020-11-07 00:57:07,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-07 00:57:07,340 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:57:07,340 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, 1, 1] [2020-11-07 00:57:07,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 00:57:07,341 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:57:07,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:57:07,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1886257638, now seen corresponding path program 1 times [2020-11-07 00:57:07,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:57:07,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214286295] [2020-11-07 00:57:07,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:57:07,346 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:57:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:57:07,404 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:57:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:57:07,454 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:57:07,533 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:57:07,533 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:57:07,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 00:57:07,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:57:07 BoogieIcfgContainer [2020-11-07 00:57:07,572 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:57:07,577 INFO L168 Benchmark]: Toolchain (without parser) took 17238.91 ms. Allocated memory was 155.2 MB in the beginning and 352.3 MB in the end (delta: 197.1 MB). Free memory was 139.6 MB in the beginning and 273.8 MB in the end (delta: -134.2 MB). Peak memory consumption was 62.9 MB. Max. memory is 8.0 GB. [2020-11-07 00:57:07,578 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 155.2 MB. Free memory is still 129.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:57:07,580 INFO L168 Benchmark]: CACSL2BoogieTranslator took 755.60 ms. Allocated memory is still 155.2 MB. Free memory was 139.1 MB in the beginning and 122.5 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2020-11-07 00:57:07,583 INFO L168 Benchmark]: Boogie Preprocessor took 80.15 ms. Allocated memory is still 155.2 MB. Free memory was 122.5 MB in the beginning and 119.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:57:07,589 INFO L168 Benchmark]: RCFGBuilder took 875.15 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 119.1 MB in the beginning and 127.8 MB in the end (delta: -8.7 MB). Peak memory consumption was 31.6 MB. Max. memory is 8.0 GB. [2020-11-07 00:57:07,590 INFO L168 Benchmark]: TraceAbstraction took 15511.06 ms. Allocated memory was 186.6 MB in the beginning and 352.3 MB in the end (delta: 165.7 MB). Free memory was 127.8 MB in the beginning and 273.8 MB in the end (delta: -145.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. [2020-11-07 00:57:07,601 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 155.2 MB. Free memory is still 129.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 755.60 ms. Allocated memory is still 155.2 MB. Free memory was 139.1 MB in the beginning and 122.5 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 80.15 ms. Allocated memory is still 155.2 MB. Free memory was 122.5 MB in the beginning and 119.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 875.15 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 119.1 MB in the beginning and 127.8 MB in the end (delta: -8.7 MB). Peak memory consumption was 31.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 15511.06 ms. Allocated memory was 186.6 MB in the beginning and 352.3 MB in the end (delta: 165.7 MB). Free memory was 127.8 MB in the beginning and 273.8 MB in the end (delta: -145.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 562]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_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] CALL reach_error() [L562] COND FALSE !(0) [L562] __assert_fail ("0", "model/ldv.h", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 26 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.4s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 12.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 900 SDtfs, 2375 SDslu, 680 SDs, 0 SdLazy, 4869 SolverSat, 637 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 251 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1818 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=293occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 225 StatesRemovedByMinimization, 5 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...