/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:21:06,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:21:06,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:21:06,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:21:06,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:21:06,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:21:06,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:21:06,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:21:06,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:21:06,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:21:06,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:21:06,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:21:06,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:21:06,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:21:06,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:21:06,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:21:06,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:21:06,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:21:06,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:21:06,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:21:06,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:21:06,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:21:06,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:21:06,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:21:06,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 11:21:06,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 11:21:06,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 11:21:06,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 11:21:06,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 11:21:06,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 11:21:06,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 11:21:06,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 11:21:06,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 11:21:06,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 11:21:06,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 11:21:06,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 11:21:06,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 11:21:06,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 11:21:06,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:21:06,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:21:06,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:21:06,102 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-07 11:21:06,116 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:21:06,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:21:06,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:21:06,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:21:06,118 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:21:06,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:21:06,118 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:21:06,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:21:06,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:21:06,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:21:06,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:21:06,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:21:06,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:21:06,119 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:21:06,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:21:06,120 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:21:06,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:21:06,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:21:06,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:21:06,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:21:06,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:21:06,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:21:06,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:21:06,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:21:06,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:21:06,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:21:06,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:21:06,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:21:06,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:21:06,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:21:06,419 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:21:06,442 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:21:06,446 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:21:06,447 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:21:06,448 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:21:06,449 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-07-07 11:21:06,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4493bcbc1/ba37b945ae384314a8cf383537296a11/FLAGa8e38a1d5 [2020-07-07 11:21:07,103 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:21:07,103 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-07-07 11:21:07,116 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4493bcbc1/ba37b945ae384314a8cf383537296a11/FLAGa8e38a1d5 [2020-07-07 11:21:07,358 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4493bcbc1/ba37b945ae384314a8cf383537296a11 [2020-07-07 11:21:07,367 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:21:07,369 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:21:07,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:21:07,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:21:07,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:21:07,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:21:07" (1/1) ... [2020-07-07 11:21:07,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a2e449c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:21:07, skipping insertion in model container [2020-07-07 11:21:07,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:21:07" (1/1) ... [2020-07-07 11:21:07,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:21:07,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:21:07,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:21:07,955 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:21:08,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:21:08,084 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:21:08,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:21:08 WrapperNode [2020-07-07 11:21:08,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:21:08,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:21:08,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:21:08,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:21:08,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:21:08" (1/1) ... [2020-07-07 11:21:08,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:21:08" (1/1) ... [2020-07-07 11:21:08,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:21:08" (1/1) ... [2020-07-07 11:21:08,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:21:08" (1/1) ... [2020-07-07 11:21:08,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:21:08" (1/1) ... [2020-07-07 11:21:08,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:21:08" (1/1) ... [2020-07-07 11:21:08,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:21:08" (1/1) ... [2020-07-07 11:21:08,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:21:08,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:21:08,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:21:08,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:21:08,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:21:08" (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 11:21:08,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:21:08,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:21:08,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-07 11:21:08,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-07 11:21:08,229 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 11:21:08,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-07-07 11:21:08,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2020-07-07 11:21:08,231 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-07-07 11:21:08,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-07-07 11:21:08,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-07-07 11:21:08,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-07-07 11:21:08,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-07-07 11:21:08,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-07-07 11:21:08,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2020-07-07 11:21:08,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2020-07-07 11:21:08,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-07-07 11:21:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2020-07-07 11:21:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2020-07-07 11:21:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2020-07-07 11:21:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-07-07 11:21:08,235 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-07-07 11:21:08,235 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-07-07 11:21:08,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-07-07 11:21:08,235 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-07-07 11:21:08,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:21:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-07 11:21:08,238 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-07 11:21:08,238 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-07 11:21:08,238 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-07 11:21:08,238 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-07 11:21:08,238 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-07 11:21:08,239 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-07 11:21:08,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-07 11:21:08,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-07 11:21:08,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-07 11:21:08,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-07 11:21:08,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-07 11:21:08,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-07 11:21:08,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-07 11:21:08,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-07 11:21:08,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-07 11:21:08,240 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-07 11:21:08,241 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-07 11:21:08,241 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-07 11:21:08,241 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-07 11:21:08,241 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-07 11:21:08,241 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-07 11:21:08,241 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-07 11:21:08,241 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-07 11:21:08,241 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-07 11:21:08,242 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-07 11:21:08,242 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-07 11:21:08,242 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-07 11:21:08,242 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-07 11:21:08,242 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-07 11:21:08,242 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-07 11:21:08,242 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-07 11:21:08,242 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-07 11:21:08,242 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-07 11:21:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-07 11:21:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-07 11:21:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-07 11:21:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-07 11:21:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-07 11:21:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-07 11:21:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-07 11:21:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-07 11:21:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-07 11:21:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-07 11:21:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-07 11:21:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-07 11:21:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-07 11:21:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-07 11:21:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-07 11:21:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-07 11:21:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-07 11:21:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-07 11:21:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 11:21:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 11:21:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 11:21:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 11:21:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-07 11:21:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-07 11:21:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 11:21:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-07 11:21:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:21:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-07 11:21:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-07 11:21:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 11:21:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-07 11:21:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-07 11:21:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-07 11:21:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-07 11:21:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-07 11:21:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-07 11:21:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-07 11:21:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-07 11:21:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-07 11:21:08,249 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-07 11:21:08,249 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-07 11:21:08,249 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-07 11:21:08,249 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-07 11:21:08,249 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-07 11:21:08,249 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-07 11:21:08,249 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-07 11:21:08,249 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-07 11:21:08,249 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-07 11:21:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-07 11:21:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-07 11:21:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-07 11:21:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-07 11:21:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-07 11:21:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-07 11:21:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-07 11:21:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-07 11:21:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-07 11:21:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-07 11:21:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-07 11:21:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-07 11:21:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-07 11:21:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-07 11:21:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-07 11:21:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-07 11:21:08,252 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-07 11:21:08,252 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-07 11:21:08,252 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-07 11:21:08,252 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-07 11:21:08,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:21:08,252 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 11:21:08,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:21:08,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-07-07 11:21:08,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 11:21:08,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2020-07-07 11:21:08,254 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-07-07 11:21:08,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 11:21:08,254 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-07-07 11:21:08,255 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-07-07 11:21:08,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-07-07 11:21:08,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 11:21:08,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-07-07 11:21:08,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-07-07 11:21:08,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2020-07-07 11:21:08,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2020-07-07 11:21:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-07-07 11:21:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2020-07-07 11:21:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2020-07-07 11:21:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2020-07-07 11:21:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 11:21:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-07-07 11:21:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-07-07 11:21:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-07-07 11:21:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-07-07 11:21:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-07-07 11:21:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:21:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:21:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 11:21:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-07 11:21:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:21:08,936 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:21:08,936 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-07 11:21:08,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:21:08 BoogieIcfgContainer [2020-07-07 11:21:08,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:21:08,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:21:08,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:21:08,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:21:08,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:21:07" (1/3) ... [2020-07-07 11:21:08,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf51fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:21:08, skipping insertion in model container [2020-07-07 11:21:08,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:21:08" (2/3) ... [2020-07-07 11:21:08,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf51fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:21:08, skipping insertion in model container [2020-07-07 11:21:08,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:21:08" (3/3) ... [2020-07-07 11:21:08,951 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2020-07-07 11:21:08,962 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:21:08,970 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-07 11:21:08,985 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-07 11:21:09,015 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:21:09,015 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:21:09,015 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:21:09,016 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:21:09,016 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:21:09,016 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:21:09,016 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:21:09,017 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:21:09,049 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2020-07-07 11:21:09,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-07 11:21:09,057 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:21:09,059 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-07 11:21:09,060 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:21:09,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:21:09,068 INFO L82 PathProgramCache]: Analyzing trace with hash -326397870, now seen corresponding path program 1 times [2020-07-07 11:21:09,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:21:09,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641587245] [2020-07-07 11:21:09,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:21:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:09,449 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-07 11:21:09,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641587245] [2020-07-07 11:21:09,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:21:09,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:21:09,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592967414] [2020-07-07 11:21:09,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:21:09,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:21:09,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:21:09,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:21:09,478 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 4 states. [2020-07-07 11:21:09,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:21:09,735 INFO L93 Difference]: Finished difference Result 217 states and 268 transitions. [2020-07-07 11:21:09,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:21:09,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-07-07 11:21:09,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:21:09,750 INFO L225 Difference]: With dead ends: 217 [2020-07-07 11:21:09,750 INFO L226 Difference]: Without dead ends: 111 [2020-07-07 11:21:09,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:21:09,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-07-07 11:21:09,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 98. [2020-07-07 11:21:09,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-07 11:21:09,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2020-07-07 11:21:09,815 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 42 [2020-07-07 11:21:09,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:21:09,816 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2020-07-07 11:21:09,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:21:09,816 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2020-07-07 11:21:09,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-07 11:21:09,818 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:21:09,819 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-07 11:21:09,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:21:09,819 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:21:09,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:21:09,820 INFO L82 PathProgramCache]: Analyzing trace with hash -934339182, now seen corresponding path program 1 times [2020-07-07 11:21:09,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:21:09,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956493257] [2020-07-07 11:21:09,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:21:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:10,034 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-07 11:21:10,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956493257] [2020-07-07 11:21:10,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:21:10,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 11:21:10,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640148321] [2020-07-07 11:21:10,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 11:21:10,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:21:10,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 11:21:10,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:21:10,038 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand 6 states. [2020-07-07 11:21:10,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:21:10,443 INFO L93 Difference]: Finished difference Result 117 states and 134 transitions. [2020-07-07 11:21:10,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:21:10,444 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-07-07 11:21:10,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:21:10,447 INFO L225 Difference]: With dead ends: 117 [2020-07-07 11:21:10,447 INFO L226 Difference]: Without dead ends: 115 [2020-07-07 11:21:10,448 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 11:21:10,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-07-07 11:21:10,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 102. [2020-07-07 11:21:10,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-07-07 11:21:10,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2020-07-07 11:21:10,469 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 42 [2020-07-07 11:21:10,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:21:10,469 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2020-07-07 11:21:10,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 11:21:10,470 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2020-07-07 11:21:10,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-07 11:21:10,471 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:21:10,472 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-07 11:21:10,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:21:10,472 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:21:10,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:21:10,473 INFO L82 PathProgramCache]: Analyzing trace with hash 640264123, now seen corresponding path program 1 times [2020-07-07 11:21:10,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:21:10,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589498762] [2020-07-07 11:21:10,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:21:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:10,819 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-07 11:21:10,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589498762] [2020-07-07 11:21:10,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:21:10,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 11:21:10,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26869210] [2020-07-07 11:21:10,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 11:21:10,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:21:10,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 11:21:10,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:21:10,823 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand 7 states. [2020-07-07 11:21:11,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:21:11,947 INFO L93 Difference]: Finished difference Result 288 states and 346 transitions. [2020-07-07 11:21:11,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-07 11:21:11,948 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-07-07 11:21:11,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:21:11,953 INFO L225 Difference]: With dead ends: 288 [2020-07-07 11:21:11,953 INFO L226 Difference]: Without dead ends: 200 [2020-07-07 11:21:11,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-07-07 11:21:11,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-07-07 11:21:12,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 163. [2020-07-07 11:21:12,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-07-07 11:21:12,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 194 transitions. [2020-07-07 11:21:12,008 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 194 transitions. Word has length 42 [2020-07-07 11:21:12,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:21:12,008 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 194 transitions. [2020-07-07 11:21:12,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 11:21:12,009 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 194 transitions. [2020-07-07 11:21:12,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-07-07 11:21:12,013 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:21:12,014 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 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 11:21:12,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 11:21:12,014 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:21:12,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:21:12,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1149911364, now seen corresponding path program 1 times [2020-07-07 11:21:12,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:21:12,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602601175] [2020-07-07 11:21:12,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:21:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,202 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-07-07 11:21:12,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602601175] [2020-07-07 11:21:12,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765891628] [2020-07-07 11:21:12,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:21:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,381 INFO L264 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-07 11:21:12,392 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:21:12,443 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-07-07 11:21:12,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:21:12,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2020-07-07 11:21:12,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522770529] [2020-07-07 11:21:12,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:21:12,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:21:12,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:21:12,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:21:12,445 INFO L87 Difference]: Start difference. First operand 163 states and 194 transitions. Second operand 4 states. [2020-07-07 11:21:12,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:21:12,470 INFO L93 Difference]: Finished difference Result 294 states and 350 transitions. [2020-07-07 11:21:12,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:21:12,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-07-07 11:21:12,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:21:12,474 INFO L225 Difference]: With dead ends: 294 [2020-07-07 11:21:12,474 INFO L226 Difference]: Without dead ends: 169 [2020-07-07 11:21:12,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:21:12,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-07-07 11:21:12,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2020-07-07 11:21:12,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-07-07 11:21:12,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 200 transitions. [2020-07-07 11:21:12,503 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 200 transitions. Word has length 90 [2020-07-07 11:21:12,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:21:12,505 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 200 transitions. [2020-07-07 11:21:12,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:21:12,505 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 200 transitions. [2020-07-07 11:21:12,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-07-07 11:21:12,510 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:21:12,511 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 11:21:12,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:21:12,726 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:21:12,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:21:12,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1610969230, now seen corresponding path program 1 times [2020-07-07 11:21:12,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:21:12,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942544147] [2020-07-07 11:21:12,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:21:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:13,139 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-07-07 11:21:13,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942544147] [2020-07-07 11:21:13,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851858025] [2020-07-07 11:21:13,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:21:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:21:13,297 INFO L264 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 71 conjunts are in the unsatisfiable core [2020-07-07 11:21:13,305 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:21:13,433 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2020-07-07 11:21:13,434 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:21:13,436 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:21:13,436 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:21:13,437 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2020-07-07 11:21:13,646 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2020-07-07 11:21:13,647 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:21:13,662 INFO L624 ElimStorePlain]: treesize reduction 19, result has 34.5 percent of original size [2020-07-07 11:21:13,663 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_$Pointer$.base_BEFORE_CALL_1| vanished before elimination [2020-07-07 11:21:13,663 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:21:13,663 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:37, output treesize:10 [2020-07-07 11:21:13,825 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:21:13,862 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 23 proven. 25 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-07 11:21:13,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:21:13,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 28 [2020-07-07 11:21:13,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986400288] [2020-07-07 11:21:13,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-07 11:21:13,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:21:13,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-07 11:21:13,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2020-07-07 11:21:13,867 INFO L87 Difference]: Start difference. First operand 169 states and 200 transitions. Second operand 28 states. [2020-07-07 11:21:19,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:21:19,046 INFO L93 Difference]: Finished difference Result 449 states and 539 transitions. [2020-07-07 11:21:19,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-07-07 11:21:19,047 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 90 [2020-07-07 11:21:19,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:21:19,051 INFO L225 Difference]: With dead ends: 449 [2020-07-07 11:21:19,051 INFO L226 Difference]: Without dead ends: 254 [2020-07-07 11:21:19,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=848, Invalid=3844, Unknown=0, NotChecked=0, Total=4692 [2020-07-07 11:21:19,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-07-07 11:21:19,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 211. [2020-07-07 11:21:19,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-07-07 11:21:19,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 248 transitions. [2020-07-07 11:21:19,089 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 248 transitions. Word has length 90 [2020-07-07 11:21:19,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:21:19,089 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 248 transitions. [2020-07-07 11:21:19,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-07 11:21:19,090 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 248 transitions. [2020-07-07 11:21:19,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-07 11:21:19,091 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:21:19,092 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:21:19,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:21:19,307 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:21:19,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:21:19,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1106436747, now seen corresponding path program 1 times [2020-07-07 11:21:19,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:21:19,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69040107] [2020-07-07 11:21:19,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:21:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:21:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:21:19,418 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-07 11:21:19,418 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 11:21:19,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 11:21:19,457 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 14 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2020-07-07 11:21:19,458 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 15 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2020-07-07 11:21:19,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:21:19 BoogieIcfgContainer [2020-07-07 11:21:19,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:21:19,487 INFO L168 Benchmark]: Toolchain (without parser) took 12118.87 ms. Allocated memory was 137.9 MB in the beginning and 371.7 MB in the end (delta: 233.8 MB). Free memory was 99.7 MB in the beginning and 101.0 MB in the end (delta: -1.3 MB). Peak memory consumption was 232.5 MB. Max. memory is 7.1 GB. [2020-07-07 11:21:19,488 INFO L168 Benchmark]: CDTParser took 1.50 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 11:21:19,489 INFO L168 Benchmark]: CACSL2BoogieTranslator took 715.20 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 99.4 MB in the beginning and 165.6 MB in the end (delta: -66.2 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2020-07-07 11:21:19,490 INFO L168 Benchmark]: Boogie Preprocessor took 78.47 ms. Allocated memory is still 202.9 MB. Free memory was 165.6 MB in the beginning and 162.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-07-07 11:21:19,491 INFO L168 Benchmark]: RCFGBuilder took 777.54 ms. Allocated memory is still 202.9 MB. Free memory was 162.2 MB in the beginning and 101.7 MB in the end (delta: 60.5 MB). Peak memory consumption was 60.5 MB. Max. memory is 7.1 GB. [2020-07-07 11:21:19,492 INFO L168 Benchmark]: TraceAbstraction took 10542.76 ms. Allocated memory was 202.9 MB in the beginning and 371.7 MB in the end (delta: 168.8 MB). Free memory was 101.1 MB in the beginning and 101.0 MB in the end (delta: 83.3 kB). Peak memory consumption was 168.9 MB. Max. memory is 7.1 GB. [2020-07-07 11:21:19,496 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.50 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 715.20 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 99.4 MB in the beginning and 165.6 MB in the end (delta: -66.2 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.47 ms. Allocated memory is still 202.9 MB. Free memory was 165.6 MB in the beginning and 162.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 777.54 ms. Allocated memory is still 202.9 MB. Free memory was 162.2 MB in the beginning and 101.7 MB in the end (delta: 60.5 MB). Peak memory consumption was 60.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10542.76 ms. Allocated memory was 202.9 MB in the beginning and 371.7 MB in the end (delta: 168.8 MB). Free memory was 101.1 MB in the beginning and 101.0 MB in the end (delta: 83.3 kB). Peak memory consumption was 168.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 14 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 15 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 658]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L654] struct ldv_list_head mutexes = { &(mutexes), &(mutexes) }; VAL [\old(mutexes)=null, \old(mutexes)=null, mutexes={2:0}] [L681] CALL foo() VAL [mutexes={2:0}] [L670] FCALL ldv_initialize() VAL [mutexes={2:0}] [L671] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [\old(size)=8, mutexes={2:0}] [L565] void *ptr = malloc(size); VAL [\old(size)=8, malloc(size)={-1:0}, mutexes={2:0}, ptr={-1:0}, size=8] [L566] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, mutexes={2:0}] [L554] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, mutexes={2:0}] [L566] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=8, malloc(size)={-1:0}, mutexes={2:0}, ptr={-1:0}, size=8] [L567] return ptr; VAL [\old(size)=8, \result={-1:0}, malloc(size)={-1:0}, mutexes={2:0}, ptr={-1:0}, size=8] [L671] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [ldv_successful_malloc(sizeof(struct mutex))={-1:0}, mutexes={2:0}] [L671] struct mutex *m1 = ldv_successful_malloc(sizeof(struct mutex)); [L672] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [\old(size)=8, mutexes={2:0}] [L565] void *ptr = malloc(size); VAL [\old(size)=8, malloc(size)={-2:0}, mutexes={2:0}, ptr={-2:0}, size=8] [L566] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, mutexes={2:0}] [L554] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, mutexes={2:0}] [L566] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=8, malloc(size)={-2:0}, mutexes={2:0}, ptr={-2:0}, size=8] [L567] return ptr; VAL [\old(size)=8, \result={-2:0}, malloc(size)={-2:0}, mutexes={2:0}, ptr={-2:0}, size=8] [L672] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [ldv_successful_malloc(sizeof(struct mutex))={-2:0}, m1={-1:0}, mutexes={2:0}] [L672] struct mutex *m2 = ldv_successful_malloc(sizeof(struct mutex)); [L673] CALL mutex_lock(m1) VAL [m={-1:0}, mutexes={2:0}] [L658] CALL ldv_is_in_set(m, &mutexes) VAL [e={-1:0}, mutexes={2:0}, s={2:0}] [L643] struct ldv_list_element *m; [L644] EXPR (s)->next [L644] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L644] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [__mptr={2:0}, e={-1:0}, e={-1:0}, m={2:-4}, mutexes={2:0}, s={2:0}, s={2:0}] [L644] COND FALSE !(&m->list != (s)) VAL [__mptr={2:0}, e={-1:0}, e={-1:0}, m={2:-4}, mutexes={2:0}, s={2:0}, s={2:0}] [L649] return 0; VAL [\result=0, __mptr={2:0}, e={-1:0}, e={-1:0}, m={2:-4}, mutexes={2:0}, s={2:0}, s={2:0}] [L658] RET ldv_is_in_set(m, &mutexes) VAL [ldv_is_in_set(m, &mutexes)=0, m={-1:0}, m={-1:0}, mutexes={2:0}] [L658] COND FALSE !(ldv_is_in_set(m, &mutexes)) [L659] CALL ldv_set_add(m, &mutexes) VAL [mutexes={2:0}, new={-1:0}, s={2:0}] [L625] CALL, EXPR ldv_is_in_set(new, s) VAL [e={-1:0}, mutexes={2:0}, s={2:0}] [L643] struct ldv_list_element *m; [L644] EXPR (s)->next [L644] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L644] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [__mptr={2:0}, e={-1:0}, e={-1:0}, m={2:-4}, mutexes={2:0}, s={2:0}, s={2:0}] [L644] COND FALSE !(&m->list != (s)) VAL [__mptr={2:0}, e={-1:0}, e={-1:0}, m={2:-4}, mutexes={2:0}, s={2:0}, s={2:0}] [L649] return 0; VAL [\result=0, __mptr={2:0}, e={-1:0}, e={-1:0}, m={2:-4}, mutexes={2:0}, s={2:0}, s={2:0}] [L625] RET, EXPR ldv_is_in_set(new, s) VAL [ldv_is_in_set(new, s)=0, mutexes={2:0}, new={-1:0}, new={-1:0}, s={2:0}, s={2:0}] [L625] COND TRUE !ldv_is_in_set(new, s) [L626] struct ldv_list_element *le; VAL [mutexes={2:0}, new={-1:0}, new={-1:0}, s={2:0}, s={2:0}] [L627] CALL, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [\old(size)=12, mutexes={2:0}] [L565] void *ptr = malloc(size); VAL [\old(size)=12, malloc(size)={-3:0}, mutexes={2:0}, ptr={-3:0}, size=12] [L566] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, mutexes={2:0}] [L554] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, mutexes={2:0}] [L566] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=12, malloc(size)={-3:0}, mutexes={2:0}, ptr={-3:0}, size=12] [L567] return ptr; VAL [\old(size)=12, \result={-3:0}, malloc(size)={-3:0}, mutexes={2:0}, ptr={-3:0}, size=12] [L627] RET, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [ldv_successful_malloc(sizeof(struct ldv_list_element))={-3:0}, mutexes={2:0}, new={-1:0}, new={-1:0}, s={2:0}, s={2:0}] [L627] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L628] le->e = new VAL [le={-3:0}, mutexes={2:0}, new={-1:0}, new={-1:0}, s={2:0}, s={2:0}] [L629] CALL ldv_list_add(&le->list, s) VAL [head={2:0}, mutexes={2:0}, new={-3:4}] [L597] EXPR head->next VAL [head={2:0}, head={2:0}, head->next={2:0}, mutexes={2:0}, new={-3:4}, new={-3:4}] [L597] CALL __ldv_list_add(new, head, head->next) VAL [mutexes={2:0}, new={-3:4}, next={2:0}, prev={2:0}] [L585] next->prev = new [L586] new->next = next [L587] new->prev = prev [L588] prev->next = new VAL [mutexes={2:0}, new={-3:4}, new={-3:4}, next={2:0}, next={2:0}, prev={2:0}, prev={2:0}] [L597] RET __ldv_list_add(new, head, head->next) VAL [head={2:0}, head={2:0}, head->next={2:0}, mutexes={2:0}, new={-3:4}, new={-3:4}] [L629] RET ldv_list_add(&le->list, s) VAL [le={-3:0}, mutexes={2:0}, new={-1:0}, new={-1:0}, s={2:0}, s={2:0}] [L659] RET ldv_set_add(m, &mutexes) VAL [m={-1:0}, m={-1:0}, mutexes={2:0}] [L673] RET mutex_lock(m1) VAL [m1={-1:0}, m2={-2:0}, mutexes={2:0}] [L674] CALL mutex_lock(m1) VAL [m={-1:0}, mutexes={2:0}] [L658] CALL ldv_is_in_set(m, &mutexes) VAL [e={-1:0}, mutexes={2:0}, s={2:0}] [L643] struct ldv_list_element *m; [L644] EXPR (s)->next [L644] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L644] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [__mptr={-3:4}, e={-1:0}, e={-1:0}, m={-3:0}, mutexes={2:0}, s={2:0}, s={2:0}] [L644] COND TRUE &m->list != (s) [L645] EXPR m->e VAL [__mptr={-3:4}, e={-1:0}, e={-1:0}, m={-3:0}, m->e={-1:0}, mutexes={2:0}, s={2:0}, s={2:0}] [L645] COND TRUE m->e == e [L646] return 1; VAL [\result=1, __mptr={-3:4}, e={-1:0}, e={-1:0}, m={-3:0}, mutexes={2:0}, s={2:0}, s={2:0}] [L658] RET ldv_is_in_set(m, &mutexes) VAL [ldv_is_in_set(m, &mutexes)=1, m={-1:0}, m={-1:0}, mutexes={2:0}] [L658] COND TRUE ldv_is_in_set(m, &mutexes) [L658] __VERIFIER_error() VAL [m={-1:0}, m={-1:0}, mutexes={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 25 procedures, 129 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.4s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 541 SDtfs, 1084 SDslu, 493 SDs, 0 SdLazy, 3573 SolverSat, 564 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 382 GetRequests, 289 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=211occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 106 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 572 NumberOfCodeBlocks, 572 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 479 ConstructedInterpolants, 4 QuantifiedInterpolants, 175666 SizeOfPredicates, 27 NumberOfNonLiveVariables, 908 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 242/303 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...