/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 0.1.25-86f66a4 [2020-07-07 13:25:41,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:25:41,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:25:41,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:25:41,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:25:41,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:25:41,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:25:41,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:25:41,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:25:41,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:25:41,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:25:41,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:25:41,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:25:41,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:25:41,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:25:41,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:25:41,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:25:41,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:25:41,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:25:41,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:25:41,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:25:41,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:25:41,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:25:41,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:25:41,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:25:41,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:25:41,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:25:41,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:25:41,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:25:41,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:25:41,864 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:25:41,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:25:41,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:25:41,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:25:41,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:25:41,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:25:41,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:25:41,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:25:41,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:25:41,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:25:41,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:25:41,873 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:25:41,894 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:25:41,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:25:41,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:25:41,904 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:25:41,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:25:41,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:25:41,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:25:41,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:25:41,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:25:41,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:25:41,905 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:25:41,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:25:41,908 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:25:41,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:25:41,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:25:41,909 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:25:41,909 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:25:41,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:25:41,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:25:41,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:25:41,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:25:41,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:25:41,911 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:25:42,192 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:25:42,209 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:25:42,212 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:25:42,214 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:25:42,214 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:25:42,215 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-07-07 13:25:42,300 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7c692d0b/d229d4ab41b94c85ad6eed321f0cbcca/FLAGb5c9c162d [2020-07-07 13:25:42,889 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:25:42,890 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-07-07 13:25:42,905 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7c692d0b/d229d4ab41b94c85ad6eed321f0cbcca/FLAGb5c9c162d [2020-07-07 13:25:43,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7c692d0b/d229d4ab41b94c85ad6eed321f0cbcca [2020-07-07 13:25:43,238 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:25:43,240 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:25:43,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:43,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:25:43,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:25:43,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:43" (1/1) ... [2020-07-07 13:25:43,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@118c986e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:43, skipping insertion in model container [2020-07-07 13:25:43,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:43" (1/1) ... [2020-07-07 13:25:43,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:25:43,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:25:43,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:43,810 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:25:43,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:43,944 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:25:43,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:43 WrapperNode [2020-07-07 13:25:43,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:43,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:25:43,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:25:43,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:25:43,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:43" (1/1) ... [2020-07-07 13:25:43,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:43" (1/1) ... [2020-07-07 13:25:43,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:43" (1/1) ... [2020-07-07 13:25:43,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:43" (1/1) ... [2020-07-07 13:25:44,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:43" (1/1) ... [2020-07-07 13:25:44,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:43" (1/1) ... [2020-07-07 13:25:44,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:43" (1/1) ... [2020-07-07 13:25:44,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:25:44,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:25:44,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:25:44,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:25:44,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:43" (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 [2020-07-07 13:25:44,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:25:44,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:25:44,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-07 13:25:44,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-07 13:25:44,084 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 13:25:44,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-07-07 13:25:44,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2020-07-07 13:25:44,085 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-07-07 13:25:44,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-07-07 13:25:44,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-07-07 13:25:44,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-07-07 13:25:44,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-07-07 13:25:44,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-07-07 13:25:44,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2020-07-07 13:25:44,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2020-07-07 13:25:44,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-07-07 13:25:44,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2020-07-07 13:25:44,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2020-07-07 13:25:44,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2020-07-07 13:25:44,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-07-07 13:25:44,087 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-07-07 13:25:44,087 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-07-07 13:25:44,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-07-07 13:25:44,087 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-07-07 13:25:44,087 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:25:44,088 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-07 13:25:44,088 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-07 13:25:44,088 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-07 13:25:44,088 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-07 13:25:44,088 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-07 13:25:44,088 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-07 13:25:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-07 13:25:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-07 13:25:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-07 13:25:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-07 13:25:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-07 13:25:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-07 13:25:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-07 13:25:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-07 13:25:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-07 13:25:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-07 13:25:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-07 13:25:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-07 13:25:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-07 13:25:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-07 13:25:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-07 13:25:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-07 13:25:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-07 13:25:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-07 13:25:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-07 13:25:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-07 13:25:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-07 13:25:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-07 13:25:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-07 13:25:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-07 13:25:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-07 13:25:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-07 13:25:44,093 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-07 13:25:44,093 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-07 13:25:44,093 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-07 13:25:44,093 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-07 13:25:44,093 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-07 13:25:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-07 13:25:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-07 13:25:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-07 13:25:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-07 13:25:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-07 13:25:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-07 13:25:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-07 13:25:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-07 13:25:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-07 13:25:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-07 13:25:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-07 13:25:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-07 13:25:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-07 13:25:44,096 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-07 13:25:44,096 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-07 13:25:44,096 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:25:44,096 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 13:25:44,096 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 13:25:44,096 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 13:25:44,097 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-07 13:25:44,097 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-07 13:25:44,097 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 13:25:44,097 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-07 13:25:44,097 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 13:25:44,097 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-07 13:25:44,098 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-07 13:25:44,098 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 13:25:44,098 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-07 13:25:44,098 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-07 13:25:44,098 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-07 13:25:44,098 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-07 13:25:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-07 13:25:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-07 13:25:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-07 13:25:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-07 13:25:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-07 13:25:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-07 13:25:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-07 13:25:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-07 13:25:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-07 13:25:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-07 13:25:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-07 13:25:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-07 13:25:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-07 13:25:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-07 13:25:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-07 13:25:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-07 13:25:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-07 13:25:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-07 13:25:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-07 13:25:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-07 13:25:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-07 13:25:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-07 13:25:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-07 13:25:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-07 13:25:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-07 13:25:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-07 13:25:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-07 13:25:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-07 13:25:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-07 13:25:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-07 13:25:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-07 13:25:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-07 13:25:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-07 13:25:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-07 13:25:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:25:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 13:25:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:25:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-07-07 13:25:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 13:25:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2020-07-07 13:25:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-07-07 13:25:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 13:25:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-07-07 13:25:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-07-07 13:25:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-07-07 13:25:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 13:25:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-07-07 13:25:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-07-07 13:25:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2020-07-07 13:25:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2020-07-07 13:25:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-07-07 13:25:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2020-07-07 13:25:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2020-07-07 13:25:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2020-07-07 13:25:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:25:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-07-07 13:25:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-07-07 13:25:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-07-07 13:25:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-07-07 13:25:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-07-07 13:25:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:25:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:25:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 13:25:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-07 13:25:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:25:44,913 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:25:44,914 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-07 13:25:44,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:44 BoogieIcfgContainer [2020-07-07 13:25:44,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:25:44,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:25:44,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:25:44,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:25:44,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:25:43" (1/3) ... [2020-07-07 13:25:44,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5a5d70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:44, skipping insertion in model container [2020-07-07 13:25:44,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:43" (2/3) ... [2020-07-07 13:25:44,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5a5d70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:44, skipping insertion in model container [2020-07-07 13:25:44,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:44" (3/3) ... [2020-07-07 13:25:44,927 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2020-07-07 13:25:44,939 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:25:44,948 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-07 13:25:44,962 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-07 13:25:44,985 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:25:44,986 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:25:44,986 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:25:44,986 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:25:44,986 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:25:44,987 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:25:44,987 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:25:44,987 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:25:45,007 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-07-07 13:25:45,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-07 13:25:45,020 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:45,021 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] [2020-07-07 13:25:45,022 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:45,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:45,028 INFO L82 PathProgramCache]: Analyzing trace with hash 899835465, now seen corresponding path program 1 times [2020-07-07 13:25:45,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:45,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836633733] [2020-07-07 13:25:45,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:45,455 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-07 13:25:45,455 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:45,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836633733] [2020-07-07 13:25:45,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:45,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:25:45,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845096650] [2020-07-07 13:25:45,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:25:45,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:45,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:25:45,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:25:45,484 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 6 states. [2020-07-07 13:25:46,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:46,285 INFO L93 Difference]: Finished difference Result 367 states and 421 transitions. [2020-07-07 13:25:46,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:25:46,287 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-07-07 13:25:46,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:46,302 INFO L225 Difference]: With dead ends: 367 [2020-07-07 13:25:46,302 INFO L226 Difference]: Without dead ends: 192 [2020-07-07 13:25:46,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:25:46,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-07-07 13:25:46,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 172. [2020-07-07 13:25:46,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-07-07 13:25:46,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 184 transitions. [2020-07-07 13:25:46,389 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 184 transitions. Word has length 60 [2020-07-07 13:25:46,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:46,390 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 184 transitions. [2020-07-07 13:25:46,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:25:46,390 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 184 transitions. [2020-07-07 13:25:46,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-07 13:25:46,393 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:46,393 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] [2020-07-07 13:25:46,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:25:46,394 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:46,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:46,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1713006157, now seen corresponding path program 1 times [2020-07-07 13:25:46,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:46,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388347606] [2020-07-07 13:25:46,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-07 13:25:46,796 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:46,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388347606] [2020-07-07 13:25:46,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:46,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 13:25:46,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151026684] [2020-07-07 13:25:46,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 13:25:46,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:46,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 13:25:46,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-07-07 13:25:46,799 INFO L87 Difference]: Start difference. First operand 172 states and 184 transitions. Second operand 11 states. [2020-07-07 13:25:47,300 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-07-07 13:25:48,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:48,977 INFO L93 Difference]: Finished difference Result 494 states and 552 transitions. [2020-07-07 13:25:48,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-07 13:25:48,978 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-07-07 13:25:48,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:48,984 INFO L225 Difference]: With dead ends: 494 [2020-07-07 13:25:48,984 INFO L226 Difference]: Without dead ends: 343 [2020-07-07 13:25:48,988 INFO L675 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 [2020-07-07 13:25:48,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-07-07 13:25:49,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 277. [2020-07-07 13:25:49,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-07-07 13:25:49,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 308 transitions. [2020-07-07 13:25:49,058 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 308 transitions. Word has length 63 [2020-07-07 13:25:49,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:49,059 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 308 transitions. [2020-07-07 13:25:49,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 13:25:49,060 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 308 transitions. [2020-07-07 13:25:49,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-07-07 13:25:49,064 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:49,065 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] [2020-07-07 13:25:49,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:25:49,065 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:49,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:49,066 INFO L82 PathProgramCache]: Analyzing trace with hash 2101448545, now seen corresponding path program 1 times [2020-07-07 13:25:49,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:49,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250937531] [2020-07-07 13:25:49,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:49,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:25:49,092 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.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:277) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) 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:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) 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:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-07 13:25:49,098 INFO L168 Benchmark]: Toolchain (without parser) took 5857.96 ms. Allocated memory was 146.3 MB in the beginning and 286.3 MB in the end (delta: 140.0 MB). Free memory was 102.6 MB in the beginning and 99.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 143.5 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:49,099 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 146.3 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-07 13:25:49,100 INFO L168 Benchmark]: CACSL2BoogieTranslator took 704.02 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 102.3 MB in the beginning and 165.4 MB in the end (delta: -63.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:49,101 INFO L168 Benchmark]: Boogie Preprocessor took 75.57 ms. Allocated memory is still 204.5 MB. Free memory was 165.4 MB in the beginning and 162.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:49,103 INFO L168 Benchmark]: RCFGBuilder took 898.07 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 162.0 MB in the beginning and 206.2 MB in the end (delta: -44.1 MB). Peak memory consumption was 75.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:49,104 INFO L168 Benchmark]: TraceAbstraction took 4175.74 ms. Allocated memory was 234.9 MB in the beginning and 286.3 MB in the end (delta: 51.4 MB). Free memory was 204.8 MB in the beginning and 99.0 MB in the end (delta: 105.8 MB). Peak memory consumption was 157.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:49,108 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 146.3 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 704.02 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 102.3 MB in the beginning and 165.4 MB in the end (delta: -63.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 75.57 ms. Allocated memory is still 204.5 MB. Free memory was 165.4 MB in the beginning and 162.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 898.07 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 162.0 MB in the beginning and 206.2 MB in the end (delta: -44.1 MB). Peak memory consumption was 75.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4175.74 ms. Allocated memory was 234.9 MB in the beginning and 286.3 MB in the end (delta: 51.4 MB). Free memory was 204.8 MB in the beginning and 99.0 MB in the end (delta: 105.8 MB). Peak memory consumption was 157.2 MB. Max. memory is 7.1 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.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...