/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-b8ad66e [2020-10-23 20:39:43,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:39:43,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:39:43,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:39:43,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:39:43,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:39:43,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:39:43,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:39:43,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:39:43,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:39:43,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:39:43,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:39:43,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:39:43,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:39:43,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:39:43,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:39:43,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:39:43,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:39:43,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:39:43,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:39:43,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:39:43,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:39:43,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:39:43,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:39:43,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:39:43,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:39:43,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:39:43,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:39:43,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:39:43,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:39:43,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:39:43,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:39:43,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:39:43,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:39:43,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:39:43,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:39:43,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:39:43,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:39:43,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:39:43,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:39:43,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:39:43,680 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:39:43,700 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:39:43,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:39:43,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:39:43,705 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:39:43,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:39:43,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:39:43,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:39:43,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:39:43,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:39:43,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:39:43,707 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:39:43,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:39:43,708 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:39:43,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:39:43,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:39:43,709 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:39:43,709 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:39:43,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:39:43,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:39:43,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:39:43,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:39:43,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:39:43,711 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:39:44,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:39:44,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:39:44,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:39:44,189 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:39:44,190 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:39:44,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-10-23 20:39:44,284 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed784efff/4592017bf2254ef19fdef4cad76a6146/FLAG06072ca80 [2020-10-23 20:39:45,060 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:39:45,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-10-23 20:39:45,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed784efff/4592017bf2254ef19fdef4cad76a6146/FLAG06072ca80 [2020-10-23 20:39:45,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed784efff/4592017bf2254ef19fdef4cad76a6146 [2020-10-23 20:39:45,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:39:45,327 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:39:45,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:39:45,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:39:45,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:39:45,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:39:45" (1/1) ... [2020-10-23 20:39:45,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db08cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:45, skipping insertion in model container [2020-10-23 20:39:45,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:39:45" (1/1) ... [2020-10-23 20:39:45,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:39:45,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:39:45,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:39:45,766 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:39:45,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:39:45,953 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:39:45,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:45 WrapperNode [2020-10-23 20:39:45,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:39:45,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:39:45,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:39:45,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:39:45,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:45" (1/1) ... [2020-10-23 20:39:45,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:45" (1/1) ... [2020-10-23 20:39:45,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:45" (1/1) ... [2020-10-23 20:39:45,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:45" (1/1) ... [2020-10-23 20:39:46,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:45" (1/1) ... [2020-10-23 20:39:46,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:45" (1/1) ... [2020-10-23 20:39:46,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:45" (1/1) ... [2020-10-23 20:39:46,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:39:46,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:39:46,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:39:46,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:39:46,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:45" (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 [2020-10-23 20:39:46,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:39:46,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:39:46,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-23 20:39:46,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-23 20:39:46,116 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:39:46,116 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 20:39:46,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-10-23 20:39:46,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2020-10-23 20:39:46,117 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-10-23 20:39:46,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-10-23 20:39:46,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-10-23 20:39:46,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-10-23 20:39:46,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-10-23 20:39:46,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-10-23 20:39:46,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2020-10-23 20:39:46,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2020-10-23 20:39:46,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-10-23 20:39:46,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2020-10-23 20:39:46,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2020-10-23 20:39:46,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2020-10-23 20:39:46,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-10-23 20:39:46,119 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-10-23 20:39:46,120 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-10-23 20:39:46,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-10-23 20:39:46,120 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-23 20:39:46,120 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:39:46,120 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-23 20:39:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-23 20:39:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-23 20:39:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-23 20:39:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-23 20:39:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-23 20:39:46,122 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-23 20:39:46,122 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-23 20:39:46,122 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-23 20:39:46,122 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-23 20:39:46,122 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-23 20:39:46,122 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-23 20:39:46,123 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-23 20:39:46,123 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-23 20:39:46,123 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-23 20:39:46,123 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-23 20:39:46,123 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-23 20:39:46,124 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-23 20:39:46,124 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-23 20:39:46,124 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-23 20:39:46,124 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-23 20:39:46,124 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-23 20:39:46,124 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-23 20:39:46,125 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-23 20:39:46,125 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-23 20:39:46,125 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-23 20:39:46,125 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-23 20:39:46,125 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-23 20:39:46,125 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-23 20:39:46,126 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-23 20:39:46,126 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-23 20:39:46,126 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-23 20:39:46,126 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-23 20:39:46,126 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-23 20:39:46,127 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-23 20:39:46,127 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-23 20:39:46,127 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-23 20:39:46,127 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-23 20:39:46,127 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-23 20:39:46,128 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-23 20:39:46,128 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-23 20:39:46,128 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-23 20:39:46,128 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-23 20:39:46,128 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-23 20:39:46,128 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-23 20:39:46,129 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-23 20:39:46,129 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-23 20:39:46,129 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-23 20:39:46,129 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-23 20:39:46,129 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-23 20:39:46,130 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-23 20:39:46,130 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-23 20:39:46,130 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:39:46,130 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-23 20:39:46,130 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-23 20:39:46,130 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:39:46,131 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-23 20:39:46,131 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-23 20:39:46,131 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-23 20:39:46,131 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-23 20:39:46,131 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:39:46,131 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-23 20:39:46,132 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-23 20:39:46,132 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-23 20:39:46,132 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-23 20:39:46,132 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-23 20:39:46,132 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-23 20:39:46,132 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-23 20:39:46,133 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-23 20:39:46,133 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-23 20:39:46,133 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-23 20:39:46,133 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-23 20:39:46,133 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-23 20:39:46,133 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-23 20:39:46,134 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-23 20:39:46,134 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-23 20:39:46,134 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-23 20:39:46,134 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-23 20:39:46,134 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-23 20:39:46,134 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-23 20:39:46,135 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-23 20:39:46,135 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-23 20:39:46,135 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-23 20:39:46,135 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-23 20:39:46,135 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-23 20:39:46,135 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-23 20:39:46,136 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-23 20:39:46,136 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-23 20:39:46,136 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-23 20:39:46,136 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-23 20:39:46,136 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-23 20:39:46,136 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-23 20:39:46,137 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-23 20:39:46,137 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-23 20:39:46,137 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-23 20:39:46,137 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-23 20:39:46,137 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-23 20:39:46,137 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-23 20:39:46,138 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-23 20:39:46,138 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-23 20:39:46,138 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-23 20:39:46,138 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-23 20:39:46,138 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:39:46,138 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 20:39:46,139 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 20:39:46,139 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:39:46,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:39:46,139 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 20:39:46,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:39:46,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-10-23 20:39:46,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:39:46,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2020-10-23 20:39:46,140 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-10-23 20:39:46,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:39:46,140 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-10-23 20:39:46,140 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-10-23 20:39:46,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-10-23 20:39:46,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:39:46,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-10-23 20:39:46,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-10-23 20:39:46,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2020-10-23 20:39:46,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2020-10-23 20:39:46,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-10-23 20:39:46,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2020-10-23 20:39:46,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2020-10-23 20:39:46,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2020-10-23 20:39:46,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:39:46,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-10-23 20:39:46,143 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-10-23 20:39:46,143 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-10-23 20:39:46,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-10-23 20:39:46,143 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-23 20:39:46,143 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:39:46,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:39:46,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:39:46,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-23 20:39:46,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:39:46,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:39:46,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:39:47,097 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:39:47,098 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-23 20:39:47,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:39:47 BoogieIcfgContainer [2020-10-23 20:39:47,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:39:47,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:39:47,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:39:47,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:39:47,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:39:45" (1/3) ... [2020-10-23 20:39:47,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dfc73ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:39:47, skipping insertion in model container [2020-10-23 20:39:47,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:45" (2/3) ... [2020-10-23 20:39:47,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dfc73ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:39:47, skipping insertion in model container [2020-10-23 20:39:47,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:39:47" (3/3) ... [2020-10-23 20:39:47,112 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2020-10-23 20:39:47,125 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:39:47,133 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:39:47,150 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:39:47,184 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:39:47,184 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:39:47,185 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:39:47,185 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:39:47,185 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:39:47,186 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:39:47,187 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:39:47,187 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:39:47,212 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-10-23 20:39:47,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-23 20:39:47,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:39:47,231 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] [2020-10-23 20:39:47,231 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:39:47,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:39:47,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1852376171, now seen corresponding path program 1 times [2020-10-23 20:39:47,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:39:47,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684516398] [2020-10-23 20:39:47,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:39:47,345 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:39:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:47,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:39:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:47,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 20:39:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:47,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:39:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:47,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:39:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:47,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-23 20:39:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:47,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:39:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:47,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-23 20:39:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:47,721 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-23 20:39:47,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684516398] [2020-10-23 20:39:47,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:39:47,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:39:47,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767117236] [2020-10-23 20:39:47,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:39:47,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:39:47,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:39:47,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:39:47,756 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 4 states. [2020-10-23 20:39:48,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:39:48,160 INFO L93 Difference]: Finished difference Result 373 states and 431 transitions. [2020-10-23 20:39:48,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:39:48,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-23 20:39:48,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:39:48,176 INFO L225 Difference]: With dead ends: 373 [2020-10-23 20:39:48,177 INFO L226 Difference]: Without dead ends: 192 [2020-10-23 20:39:48,183 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 [2020-10-23 20:39:48,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-23 20:39:48,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 172. [2020-10-23 20:39:48,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-23 20:39:48,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 184 transitions. [2020-10-23 20:39:48,264 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 184 transitions. Word has length 66 [2020-10-23 20:39:48,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:39:48,265 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 184 transitions. [2020-10-23 20:39:48,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:39:48,265 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 184 transitions. [2020-10-23 20:39:48,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-23 20:39:48,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:39:48,269 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] [2020-10-23 20:39:48,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:39:48,269 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:39:48,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:39:48,270 INFO L82 PathProgramCache]: Analyzing trace with hash 898138460, now seen corresponding path program 1 times [2020-10-23 20:39:48,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:39:48,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429820044] [2020-10-23 20:39:48,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:39:48,278 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:39:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:48,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:39:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:48,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 20:39:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:48,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:39:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:48,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:39:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:48,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-23 20:39:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:48,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:39:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:48,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-23 20:39:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-23 20:39:48,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429820044] [2020-10-23 20:39:48,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:39:48,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:39:48,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369579821] [2020-10-23 20:39:48,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:39:48,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:39:48,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:39:48,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:39:48,532 INFO L87 Difference]: Start difference. First operand 172 states and 184 transitions. Second operand 6 states. [2020-10-23 20:39:49,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:39:49,329 INFO L93 Difference]: Finished difference Result 201 states and 220 transitions. [2020-10-23 20:39:49,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 20:39:49,330 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-23 20:39:49,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:39:49,333 INFO L225 Difference]: With dead ends: 201 [2020-10-23 20:39:49,334 INFO L226 Difference]: Without dead ends: 196 [2020-10-23 20:39:49,335 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 [2020-10-23 20:39:49,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-23 20:39:49,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 176. [2020-10-23 20:39:49,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-23 20:39:49,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 190 transitions. [2020-10-23 20:39:49,375 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 190 transitions. Word has length 66 [2020-10-23 20:39:49,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:39:49,376 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 190 transitions. [2020-10-23 20:39:49,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:39:49,376 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 190 transitions. [2020-10-23 20:39:49,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-23 20:39:49,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:39:49,379 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] [2020-10-23 20:39:49,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:39:49,379 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:39:49,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:39:49,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1032759184, now seen corresponding path program 1 times [2020-10-23 20:39:49,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:39:49,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120929098] [2020-10-23 20:39:49,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:39:49,392 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:39:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:49,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:39:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:49,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 20:39:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:49,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:39:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:49,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:39:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:49,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-23 20:39:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:49,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:39:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:49,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-23 20:39:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:49,785 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-23 20:39:49,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120929098] [2020-10-23 20:39:49,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:39:49,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:39:49,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034588916] [2020-10-23 20:39:49,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:39:49,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:39:49,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:39:49,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:39:49,788 INFO L87 Difference]: Start difference. First operand 176 states and 190 transitions. Second operand 11 states. [2020-10-23 20:39:52,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:39:52,659 INFO L93 Difference]: Finished difference Result 499 states and 562 transitions. [2020-10-23 20:39:52,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-23 20:39:52,660 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-10-23 20:39:52,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:39:52,664 INFO L225 Difference]: With dead ends: 499 [2020-10-23 20:39:52,665 INFO L226 Difference]: Without dead ends: 348 [2020-10-23 20:39:52,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2020-10-23 20:39:52,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-23 20:39:52,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 281. [2020-10-23 20:39:52,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-10-23 20:39:52,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 314 transitions. [2020-10-23 20:39:52,769 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 314 transitions. Word has length 69 [2020-10-23 20:39:52,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:39:52,770 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 314 transitions. [2020-10-23 20:39:52,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:39:52,770 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 314 transitions. [2020-10-23 20:39:52,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-23 20:39:52,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:39:52,774 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] [2020-10-23 20:39:52,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:39:52,775 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:39:52,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:39:52,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1557786990, now seen corresponding path program 1 times [2020-10-23 20:39:52,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:39:52,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694379651] [2020-10-23 20:39:52,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:39:52,796 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:266) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 20:39:52,803 INFO L168 Benchmark]: Toolchain (without parser) took 7480.60 ms. Allocated memory was 125.8 MB in the beginning and 231.7 MB in the end (delta: 105.9 MB). Free memory was 101.1 MB in the beginning and 193.1 MB in the end (delta: -92.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:39:52,804 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 101.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:39:52,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 620.78 ms. Allocated memory was 125.8 MB in the beginning and 160.4 MB in the end (delta: 34.6 MB). Free memory was 100.4 MB in the beginning and 140.4 MB in the end (delta: -39.9 MB). Peak memory consumption was 30.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:39:52,806 INFO L168 Benchmark]: Boogie Preprocessor took 82.01 ms. Allocated memory is still 160.4 MB. Free memory was 140.4 MB in the beginning and 136.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:39:52,806 INFO L168 Benchmark]: RCFGBuilder took 1063.49 ms. Allocated memory is still 160.4 MB. Free memory was 136.7 MB in the beginning and 113.4 MB in the end (delta: 23.3 MB). Peak memory consumption was 42.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:39:52,808 INFO L168 Benchmark]: TraceAbstraction took 5696.16 ms. Allocated memory was 160.4 MB in the beginning and 231.7 MB in the end (delta: 71.3 MB). Free memory was 112.9 MB in the beginning and 193.1 MB in the end (delta: -80.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:39:52,812 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 101.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 620.78 ms. Allocated memory was 125.8 MB in the beginning and 160.4 MB in the end (delta: 34.6 MB). Free memory was 100.4 MB in the beginning and 140.4 MB in the end (delta: -39.9 MB). Peak memory consumption was 30.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 82.01 ms. Allocated memory is still 160.4 MB. Free memory was 140.4 MB in the beginning and 136.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1063.49 ms. Allocated memory is still 160.4 MB. Free memory was 136.7 MB in the beginning and 113.4 MB in the end (delta: 23.3 MB). Peak memory consumption was 42.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5696.16 ms. Allocated memory was 160.4 MB in the beginning and 231.7 MB in the end (delta: 71.3 MB). Free memory was 112.9 MB in the beginning and 193.1 MB in the end (delta: -80.2 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...