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_unlock_at_exit.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:08:53,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:08:53,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:08:53,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:08:53,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:08:53,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:08:53,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:08:53,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:08:53,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:08:53,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:08:53,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:08:53,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:08:53,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:08:53,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:08:53,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:08:53,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:08:53,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:08:53,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:08:53,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:08:53,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:08:53,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:08:53,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:08:53,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:08:53,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:08:53,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:08:53,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:08:53,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:08:53,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:08:53,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:08:53,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:08:53,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:08:53,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:08:53,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:08:53,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:08:53,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:08:53,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:08:53,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:08:53,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:08:53,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:08:53,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:08:53,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:08:53,272 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 [2019-10-14 23:08:53,293 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:08:53,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:08:53,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:08:53,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:08:53,295 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:08:53,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:08:53,295 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:08:53,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:08:53,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:08:53,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:08:53,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:08:53,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:08:53,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:08:53,297 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:08:53,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:08:53,297 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:08:53,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:08:53,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:08:53,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:08:53,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:08:53,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:08:53,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:08:53,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:08:53,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:08:53,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:08:53,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:08:53,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:08:53,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:08:53,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:08:53,594 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:08:53,607 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:08:53,611 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:08:53,612 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:08:53,612 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:08:53,613 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_unlock_at_exit.i [2019-10-14 23:08:53,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf5f305f7/8f6567057f05466282984e09a59603c2/FLAGc3ce71300 [2019-10-14 23:08:54,178 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:08:54,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unlock_at_exit.i [2019-10-14 23:08:54,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf5f305f7/8f6567057f05466282984e09a59603c2/FLAGc3ce71300 [2019-10-14 23:08:54,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf5f305f7/8f6567057f05466282984e09a59603c2 [2019-10-14 23:08:54,480 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:08:54,481 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:08:54,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:08:54,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:08:54,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:08:54,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:08:54" (1/1) ... [2019-10-14 23:08:54,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d449b30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:54, skipping insertion in model container [2019-10-14 23:08:54,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:08:54" (1/1) ... [2019-10-14 23:08:54,499 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:08:54,569 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:08:55,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:08:55,097 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:08:55,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:08:55,238 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:08:55,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:55 WrapperNode [2019-10-14 23:08:55,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:08:55,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:08:55,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:08:55,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:08:55,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:55" (1/1) ... [2019-10-14 23:08:55,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:55" (1/1) ... [2019-10-14 23:08:55,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:55" (1/1) ... [2019-10-14 23:08:55,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:55" (1/1) ... [2019-10-14 23:08:55,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:55" (1/1) ... [2019-10-14 23:08:55,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:55" (1/1) ... [2019-10-14 23:08:55,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:55" (1/1) ... [2019-10-14 23:08:55,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:08:55,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:08:55,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:08:55,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:08:55,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:55" (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 [2019-10-14 23:08:55,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:08:55,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:08:55,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-14 23:08:55,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-14 23:08:55,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-14 23:08:55,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2019-10-14 23:08:55,445 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-10-14 23:08:55,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-10-14 23:08:55,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-10-14 23:08:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-10-14 23:08:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-10-14 23:08:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-10-14 23:08:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2019-10-14 23:08:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2019-10-14 23:08:55,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-14 23:08:55,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2019-10-14 23:08:55,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2019-10-14 23:08:55,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2019-10-14 23:08:55,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-14 23:08:55,453 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-10-14 23:08:55,453 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-14 23:08:55,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-14 23:08:55,454 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-10-14 23:08:55,454 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:08:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-14 23:08:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-14 23:08:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-14 23:08:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-14 23:08:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-14 23:08:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-14 23:08:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-14 23:08:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-14 23:08:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-14 23:08:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-14 23:08:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-14 23:08:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-14 23:08:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-14 23:08:55,457 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-14 23:08:55,457 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-14 23:08:55,457 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-14 23:08:55,457 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-14 23:08:55,458 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-14 23:08:55,458 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-14 23:08:55,458 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-14 23:08:55,458 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-14 23:08:55,458 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-14 23:08:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-14 23:08:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-14 23:08:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-14 23:08:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-14 23:08:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-14 23:08:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-14 23:08:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-14 23:08:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-14 23:08:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-14 23:08:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-14 23:08:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-14 23:08:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-14 23:08:55,461 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-14 23:08:55,461 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-14 23:08:55,461 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-14 23:08:55,461 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-14 23:08:55,461 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-14 23:08:55,461 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-14 23:08:55,461 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-14 23:08:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-14 23:08:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-14 23:08:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-14 23:08:55,463 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-14 23:08:55,464 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-14 23:08:55,464 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-14 23:08:55,464 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-14 23:08:55,464 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-14 23:08:55,464 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-14 23:08:55,465 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-14 23:08:55,465 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-14 23:08:55,465 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:08:55,466 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 23:08:55,466 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-14 23:08:55,466 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:08:55,466 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-14 23:08:55,466 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-14 23:08:55,467 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-14 23:08:55,467 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-14 23:08:55,467 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-14 23:08:55,467 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-14 23:08:55,468 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-14 23:08:55,469 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:08:55,469 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-14 23:08:55,469 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-14 23:08:55,469 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-14 23:08:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-14 23:08:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-14 23:08:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-14 23:08:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-14 23:08:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-14 23:08:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-14 23:08:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-14 23:08:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-14 23:08:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-14 23:08:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-14 23:08:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-14 23:08:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-14 23:08:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-14 23:08:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-14 23:08:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-14 23:08:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-14 23:08:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-14 23:08:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-14 23:08:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-14 23:08:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-14 23:08:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-14 23:08:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-14 23:08:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-14 23:08:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-14 23:08:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-14 23:08:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-14 23:08:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-14 23:08:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-14 23:08:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-14 23:08:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-14 23:08:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-14 23:08:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-14 23:08:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-14 23:08:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-14 23:08:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-14 23:08:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:08:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:08:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:08:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-14 23:08:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-14 23:08:55,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:08:55,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2019-10-14 23:08:55,477 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-10-14 23:08:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:08:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-10-14 23:08:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-10-14 23:08:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-10-14 23:08:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:08:55,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-10-14 23:08:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-10-14 23:08:55,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2019-10-14 23:08:55,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2019-10-14 23:08:55,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-14 23:08:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2019-10-14 23:08:55,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2019-10-14 23:08:55,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2019-10-14 23:08:55,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:08:55,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-14 23:08:55,491 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-10-14 23:08:55,491 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-14 23:08:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-14 23:08:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-10-14 23:08:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:08:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:08:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:08:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 23:08:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:08:56,164 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:08:56,165 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-14 23:08:56,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:08:56 BoogieIcfgContainer [2019-10-14 23:08:56,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:08:56,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:08:56,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:08:56,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:08:56,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:08:54" (1/3) ... [2019-10-14 23:08:56,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e41728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:08:56, skipping insertion in model container [2019-10-14 23:08:56,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:55" (2/3) ... [2019-10-14 23:08:56,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e41728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:08:56, skipping insertion in model container [2019-10-14 23:08:56,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:08:56" (3/3) ... [2019-10-14 23:08:56,175 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_unlock_at_exit.i [2019-10-14 23:08:56,185 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:08:56,193 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-14 23:08:56,205 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-14 23:08:56,233 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:08:56,233 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:08:56,233 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:08:56,234 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:08:56,234 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:08:56,234 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:08:56,234 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:08:56,235 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:08:56,257 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2019-10-14 23:08:56,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-14 23:08:56,265 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:56,266 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 23:08:56,268 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:56,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:56,275 INFO L82 PathProgramCache]: Analyzing trace with hash 677281707, now seen corresponding path program 1 times [2019-10-14 23:08:56,284 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:56,285 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335838478] [2019-10-14 23:08:56,285 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:56,285 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:56,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:56,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:08:56,629 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335838478] [2019-10-14 23:08:56,629 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:08:56,630 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:08:56,630 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104550735] [2019-10-14 23:08:56,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:08:56,635 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:56,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:08:56,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:08:56,653 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 4 states. [2019-10-14 23:08:56,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:56,957 INFO L93 Difference]: Finished difference Result 199 states and 238 transitions. [2019-10-14 23:08:56,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:08:56,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-10-14 23:08:56,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:56,977 INFO L225 Difference]: With dead ends: 199 [2019-10-14 23:08:56,978 INFO L226 Difference]: Without dead ends: 104 [2019-10-14 23:08:56,984 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:08:57,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-10-14 23:08:57,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 91. [2019-10-14 23:08:57,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-10-14 23:08:57,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2019-10-14 23:08:57,084 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 30 [2019-10-14 23:08:57,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:57,085 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2019-10-14 23:08:57,085 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:08:57,085 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2019-10-14 23:08:57,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-14 23:08:57,087 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:57,087 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 23:08:57,087 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:57,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:57,088 INFO L82 PathProgramCache]: Analyzing trace with hash 392179489, now seen corresponding path program 1 times [2019-10-14 23:08:57,089 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:57,089 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703941258] [2019-10-14 23:08:57,089 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:57,089 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:57,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:08:57,271 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703941258] [2019-10-14 23:08:57,271 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:08:57,272 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:08:57,272 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586956321] [2019-10-14 23:08:57,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:08:57,274 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:57,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:08:57,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:08:57,275 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2019-10-14 23:08:57,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:57,644 INFO L93 Difference]: Finished difference Result 110 states and 125 transitions. [2019-10-14 23:08:57,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:08:57,649 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-10-14 23:08:57,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:57,652 INFO L225 Difference]: With dead ends: 110 [2019-10-14 23:08:57,652 INFO L226 Difference]: Without dead ends: 108 [2019-10-14 23:08:57,653 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:08:57,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2019-10-14 23:08:57,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 95. [2019-10-14 23:08:57,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-10-14 23:08:57,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 106 transitions. [2019-10-14 23:08:57,680 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 106 transitions. Word has length 30 [2019-10-14 23:08:57,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:57,684 INFO L462 AbstractCegarLoop]: Abstraction has 95 states and 106 transitions. [2019-10-14 23:08:57,686 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:08:57,686 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 106 transitions. [2019-10-14 23:08:57,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-14 23:08:57,688 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:57,688 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 23:08:57,689 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:57,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:57,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1966782794, now seen corresponding path program 1 times [2019-10-14 23:08:57,691 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:57,691 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487338864] [2019-10-14 23:08:57,691 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:57,692 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:57,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:08:58,044 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487338864] [2019-10-14 23:08:58,044 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:08:58,044 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:08:58,045 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508472675] [2019-10-14 23:08:58,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:08:58,046 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:58,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:08:58,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:08:58,046 INFO L87 Difference]: Start difference. First operand 95 states and 106 transitions. Second operand 7 states. [2019-10-14 23:08:59,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:59,045 INFO L93 Difference]: Finished difference Result 267 states and 319 transitions. [2019-10-14 23:08:59,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:08:59,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2019-10-14 23:08:59,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:59,051 INFO L225 Difference]: With dead ends: 267 [2019-10-14 23:08:59,051 INFO L226 Difference]: Without dead ends: 186 [2019-10-14 23:08:59,053 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:08:59,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2019-10-14 23:08:59,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 149. [2019-10-14 23:08:59,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-10-14 23:08:59,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2019-10-14 23:08:59,082 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 30 [2019-10-14 23:08:59,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:59,082 INFO L462 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2019-10-14 23:08:59,082 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:08:59,082 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2019-10-14 23:08:59,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-14 23:08:59,085 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:59,086 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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] [2019-10-14 23:08:59,086 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:59,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:59,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1243409077, now seen corresponding path program 1 times [2019-10-14 23:08:59,087 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:59,087 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639193439] [2019-10-14 23:08:59,087 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:59,087 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:59,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-14 23:08:59,308 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639193439] [2019-10-14 23:08:59,308 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682781860] [2019-10-14 23:08:59,309 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 [2019-10-14 23:08:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:59,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-14 23:08:59,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:08:59,553 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-14 23:08:59,553 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:08:59,553 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2019-10-14 23:08:59,554 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449831908] [2019-10-14 23:08:59,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:08:59,555 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:59,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:08:59,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:08:59,556 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 4 states. [2019-10-14 23:08:59,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:59,590 INFO L93 Difference]: Finished difference Result 272 states and 320 transitions. [2019-10-14 23:08:59,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:08:59,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2019-10-14 23:08:59,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:59,597 INFO L225 Difference]: With dead ends: 272 [2019-10-14 23:08:59,597 INFO L226 Difference]: Without dead ends: 155 [2019-10-14 23:08:59,602 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:08:59,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2019-10-14 23:08:59,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2019-10-14 23:08:59,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2019-10-14 23:08:59,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 182 transitions. [2019-10-14 23:08:59,636 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 182 transitions. Word has length 78 [2019-10-14 23:08:59,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:59,636 INFO L462 AbstractCegarLoop]: Abstraction has 155 states and 182 transitions. [2019-10-14 23:08:59,637 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:08:59,637 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 182 transitions. [2019-10-14 23:08:59,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-14 23:08:59,640 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:59,640 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:59,844 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:59,853 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:59,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:59,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1517471517, now seen corresponding path program 1 times [2019-10-14 23:08:59,853 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:59,853 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061243804] [2019-10-14 23:08:59,853 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:59,854 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:59,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-14 23:09:00,360 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061243804] [2019-10-14 23:09:00,361 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63364744] [2019-10-14 23:09:00,361 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 [2019-10-14 23:09:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:00,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 55 conjunts are in the unsatisfiable core [2019-10-14 23:09:00,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:09:00,593 INFO L375 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 [2019-10-14 23:09:00,594 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:09:00,605 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:09:00,608 INFO L375 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 [2019-10-14 23:09:00,609 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 23:09:00,614 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:09:00,615 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:09:00,615 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2019-10-14 23:09:00,670 INFO L375 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 [2019-10-14 23:09:00,671 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:09:00,679 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:09:00,684 INFO L375 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 [2019-10-14 23:09:00,684 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 23:09:00,690 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:09:00,691 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:09:00,691 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2019-10-14 23:09:00,956 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-14 23:09:00,957 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:09:00,957 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 25 [2019-10-14 23:09:00,957 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277337865] [2019-10-14 23:09:00,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:09:00,958 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:09:00,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:09:00,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2019-10-14 23:09:00,959 INFO L87 Difference]: Start difference. First operand 155 states and 182 transitions. Second operand 10 states. [2019-10-14 23:09:02,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:09:02,376 INFO L93 Difference]: Finished difference Result 330 states and 390 transitions. [2019-10-14 23:09:02,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-14 23:09:02,377 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2019-10-14 23:09:02,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:09:02,379 INFO L225 Difference]: With dead ends: 330 [2019-10-14 23:09:02,380 INFO L226 Difference]: Without dead ends: 205 [2019-10-14 23:09:02,381 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=260, Invalid=1222, Unknown=0, NotChecked=0, Total=1482 [2019-10-14 23:09:02,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2019-10-14 23:09:02,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 148. [2019-10-14 23:09:02,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-10-14 23:09:02,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 171 transitions. [2019-10-14 23:09:02,409 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 171 transitions. Word has length 78 [2019-10-14 23:09:02,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:09:02,410 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 171 transitions. [2019-10-14 23:09:02,413 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:09:02,413 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 171 transitions. [2019-10-14 23:09:02,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-14 23:09:02,414 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:09:02,415 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 23:09:02,615 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:09:02,616 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:09:02,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:09:02,617 INFO L82 PathProgramCache]: Analyzing trace with hash 9521619, now seen corresponding path program 1 times [2019-10-14 23:09:02,617 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:09:02,618 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897773963] [2019-10-14 23:09:02,618 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:09:02,618 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:09:02,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:09:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:03,991 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:09:03,992 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897773963] [2019-10-14 23:09:03,992 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640898046] [2019-10-14 23:09:03,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:09:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:04,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 132 conjunts are in the unsatisfiable core [2019-10-14 23:09:04,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:09:04,232 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-10-14 23:09:04,232 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:09:04,246 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:09:04,246 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:09:04,247 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:19 [2019-10-14 23:09:04,609 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:09:04,610 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-10-14 23:09:04,611 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:09:04,617 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:09:04,618 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:09:04,618 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:18 [2019-10-14 23:09:04,729 INFO L375 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 [2019-10-14 23:09:04,730 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:09:04,736 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:09:04,737 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:09:04,737 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:10 [2019-10-14 23:09:05,302 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:09:05,459 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2019-10-14 23:09:05,460 INFO L341 Elim1Store]: treesize reduction 100, result has 50.2 percent of original size [2019-10-14 23:09:05,461 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 108 [2019-10-14 23:09:05,463 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:09:05,635 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-10-14 23:09:05,636 INFO L567 ElimStorePlain]: treesize reduction 36, result has 81.2 percent of original size [2019-10-14 23:09:05,637 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:09:05,637 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:09:05,642 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 23:09:05,642 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:161, output treesize:155 [2019-10-14 23:09:05,643 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:09:05,643 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:09:05,896 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:09:05,897 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:09:06,820 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:09:06,821 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:09:08,545 WARN L191 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2019-10-14 23:09:08,555 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-10-14 23:09:32,609 WARN L191 SmtUtils]: Spent 12.82 s on a formula simplification that was a NOOP. DAG size: 155