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_unlock.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:08:51,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:08:51,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:08:51,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:08:51,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:08:51,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:08:51,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:08:51,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:08:51,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:08:51,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:08:51,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:08:51,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:08:51,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:08:51,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:08:51,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:08:51,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:08:51,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:08:51,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:08:51,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:08:51,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:08:51,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:08:51,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:08:51,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:08:51,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:08:51,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:08:51,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:08:51,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:08:51,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:08:51,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:08:51,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:08:51,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:08:51,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:08:51,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:08:51,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:08:51,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:08:51,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:08:51,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:08:51,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:08:51,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:08:51,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:08:51,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:08:51,304 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 23:08:51,331 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:08:51,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:08:51,333 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:08:51,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:08:51,333 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:08:51,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:08:51,334 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:08:51,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:08:51,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:08:51,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:08:51,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:08:51,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:08:51,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:08:51,336 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:08:51,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:08:51,336 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:08:51,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:08:51,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:08:51,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:08:51,337 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:08:51,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:08:51,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:08:51,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:08:51,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:08:51,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:08:51,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:08:51,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:08:51,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:08:51,339 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:08:51,629 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:08:51,645 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:08:51,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:08:51,651 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:08:51,651 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:08:51,652 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i [2019-10-14 23:08:51,727 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acfc5c20e/768308c0678846e9ad5894bff55e30e2/FLAGbdbd9460a [2019-10-14 23:08:52,325 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:08:52,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i [2019-10-14 23:08:52,346 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acfc5c20e/768308c0678846e9ad5894bff55e30e2/FLAGbdbd9460a [2019-10-14 23:08:52,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acfc5c20e/768308c0678846e9ad5894bff55e30e2 [2019-10-14 23:08:52,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:08:52,560 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:08:52,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:08:52,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:08:52,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:08:52,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:08:52" (1/1) ... [2019-10-14 23:08:52,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3534b1cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:52, skipping insertion in model container [2019-10-14 23:08:52,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:08:52" (1/1) ... [2019-10-14 23:08:52,579 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:08:52,619 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:08:53,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:08:53,109 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:08:53,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:08:53,254 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:08:53,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:53 WrapperNode [2019-10-14 23:08:53,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:08:53,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:08:53,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:08:53,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:08:53,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:53" (1/1) ... [2019-10-14 23:08:53,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:53" (1/1) ... [2019-10-14 23:08:53,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:53" (1/1) ... [2019-10-14 23:08:53,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:53" (1/1) ... [2019-10-14 23:08:53,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:53" (1/1) ... [2019-10-14 23:08:53,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:53" (1/1) ... [2019-10-14 23:08:53,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:53" (1/1) ... [2019-10-14 23:08:53,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:08:53,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:08:53,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:08:53,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:08:53,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:53" (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 23:08:53,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:08:53,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:08:53,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-14 23:08:53,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-14 23:08:53,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-14 23:08:53,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2019-10-14 23:08:53,400 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-10-14 23:08:53,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-10-14 23:08:53,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-10-14 23:08:53,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-10-14 23:08:53,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-10-14 23:08:53,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-10-14 23:08:53,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2019-10-14 23:08:53,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2019-10-14 23:08:53,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-14 23:08:53,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2019-10-14 23:08:53,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2019-10-14 23:08:53,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2019-10-14 23:08:53,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-14 23:08:53,403 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-10-14 23:08:53,403 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-14 23:08:53,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-14 23:08:53,403 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-10-14 23:08:53,403 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:08:53,403 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-14 23:08:53,404 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-14 23:08:53,404 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-14 23:08:53,404 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-14 23:08:53,404 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-14 23:08:53,404 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-14 23:08:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-14 23:08:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-14 23:08:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-14 23:08:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-14 23:08:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-14 23:08:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-14 23:08:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-14 23:08:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-14 23:08:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-14 23:08:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-14 23:08:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-14 23:08:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-14 23:08:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-14 23:08:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-14 23:08:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-14 23:08:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-14 23:08:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-14 23:08:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-14 23:08:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-14 23:08:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-14 23:08:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-14 23:08:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-14 23:08:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-14 23:08:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-14 23:08:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-14 23:08:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-14 23:08:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-14 23:08:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-14 23:08:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-14 23:08:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-14 23:08:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-14 23:08:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-14 23:08:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-14 23:08:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-14 23:08:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-14 23:08:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-14 23:08:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-14 23:08:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-14 23:08:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-14 23:08:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-14 23:08:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-14 23:08:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-14 23:08:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-14 23:08:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-14 23:08:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-14 23:08:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-14 23:08:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:08:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 23:08:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-14 23:08:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:08:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-14 23:08:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-14 23:08:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-14 23:08:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-14 23:08:53,414 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-14 23:08:53,414 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-14 23:08:53,414 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-14 23:08:53,414 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:08:53,414 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-14 23:08:53,414 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-14 23:08:53,415 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-14 23:08:53,415 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-14 23:08:53,415 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-14 23:08:53,415 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-14 23:08:53,415 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-14 23:08:53,415 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-14 23:08:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-14 23:08:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-14 23:08:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-14 23:08:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-14 23:08:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-14 23:08:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-14 23:08:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-14 23:08:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-14 23:08:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-14 23:08:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-14 23:08:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-14 23:08:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-14 23:08:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-14 23:08:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-14 23:08:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-14 23:08:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-14 23:08:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-14 23:08:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-14 23:08:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-14 23:08:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-14 23:08:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-14 23:08:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-14 23:08:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-14 23:08:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-14 23:08:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-14 23:08:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-14 23:08:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-14 23:08:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-14 23:08:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-14 23:08:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-14 23:08:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:08:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:08:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:08:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-14 23:08:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-14 23:08:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:08:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2019-10-14 23:08:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-10-14 23:08:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:08:53,422 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-10-14 23:08:53,422 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-10-14 23:08:53,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-10-14 23:08:53,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:08:53,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-10-14 23:08:53,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-10-14 23:08:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2019-10-14 23:08:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2019-10-14 23:08:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-14 23:08:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2019-10-14 23:08:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2019-10-14 23:08:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2019-10-14 23:08:53,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:08:53,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-14 23:08:53,424 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-10-14 23:08:53,424 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-14 23:08:53,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-14 23:08:53,424 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-10-14 23:08:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:08:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:08:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:08:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 23:08:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:08:54,111 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:08:54,111 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-14 23:08:54,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:08:54 BoogieIcfgContainer [2019-10-14 23:08:54,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:08:54,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:08:54,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:08:54,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:08:54,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:08:52" (1/3) ... [2019-10-14 23:08:54,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79955633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:08:54, skipping insertion in model container [2019-10-14 23:08:54,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:53" (2/3) ... [2019-10-14 23:08:54,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79955633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:08:54, skipping insertion in model container [2019-10-14 23:08:54,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:08:54" (3/3) ... [2019-10-14 23:08:54,121 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_double_unlock.i [2019-10-14 23:08:54,129 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:08:54,137 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-14 23:08:54,149 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-14 23:08:54,182 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:08:54,182 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:08:54,183 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:08:54,183 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:08:54,183 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:08:54,183 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:08:54,183 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:08:54,183 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:08:54,209 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states. [2019-10-14 23:08:54,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-14 23:08:54,216 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:54,218 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 23:08:54,220 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:54,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:54,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1643511096, now seen corresponding path program 1 times [2019-10-14 23:08:54,235 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:54,236 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278530860] [2019-10-14 23:08:54,236 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:54,237 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:54,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:54,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:54,644 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 23:08:54,645 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278530860] [2019-10-14 23:08:54,648 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:08:54,649 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:08:54,649 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250646761] [2019-10-14 23:08:54,655 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:08:54,655 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:54,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:08:54,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:08:54,676 INFO L87 Difference]: Start difference. First operand 104 states. Second operand 4 states. [2019-10-14 23:08:55,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:55,038 INFO L93 Difference]: Finished difference Result 201 states and 244 transitions. [2019-10-14 23:08:55,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:08:55,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-10-14 23:08:55,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:55,053 INFO L225 Difference]: With dead ends: 201 [2019-10-14 23:08:55,053 INFO L226 Difference]: Without dead ends: 105 [2019-10-14 23:08:55,058 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 23:08:55,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-10-14 23:08:55,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 92. [2019-10-14 23:08:55,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-10-14 23:08:55,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2019-10-14 23:08:55,113 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 30 [2019-10-14 23:08:55,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:55,114 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2019-10-14 23:08:55,114 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:08:55,114 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2019-10-14 23:08:55,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-14 23:08:55,116 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:55,117 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 23:08:55,117 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:55,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:55,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1928613314, now seen corresponding path program 1 times [2019-10-14 23:08:55,118 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:55,118 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3853523] [2019-10-14 23:08:55,119 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:55,119 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:55,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:55,319 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 23:08:55,320 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3853523] [2019-10-14 23:08:55,321 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:08:55,321 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:08:55,321 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773296977] [2019-10-14 23:08:55,323 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:08:55,324 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:55,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:08:55,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:08:55,324 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand 6 states. [2019-10-14 23:08:55,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:55,791 INFO L93 Difference]: Finished difference Result 111 states and 128 transitions. [2019-10-14 23:08:55,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:08:55,792 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-10-14 23:08:55,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:55,795 INFO L225 Difference]: With dead ends: 111 [2019-10-14 23:08:55,795 INFO L226 Difference]: Without dead ends: 109 [2019-10-14 23:08:55,796 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 23:08:55,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-10-14 23:08:55,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 96. [2019-10-14 23:08:55,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-10-14 23:08:55,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 108 transitions. [2019-10-14 23:08:55,836 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 108 transitions. Word has length 30 [2019-10-14 23:08:55,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:55,838 INFO L462 AbstractCegarLoop]: Abstraction has 96 states and 108 transitions. [2019-10-14 23:08:55,839 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:08:55,839 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 108 transitions. [2019-10-14 23:08:55,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-14 23:08:55,840 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:55,840 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 23:08:55,841 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:55,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:55,844 INFO L82 PathProgramCache]: Analyzing trace with hash -354010009, now seen corresponding path program 1 times [2019-10-14 23:08:55,845 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:55,846 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887394241] [2019-10-14 23:08:55,846 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:55,846 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:55,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:56,144 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 23:08:56,145 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887394241] [2019-10-14 23:08:56,145 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:08:56,145 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:08:56,146 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011205081] [2019-10-14 23:08:56,146 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:08:56,146 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:56,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:08:56,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:08:56,147 INFO L87 Difference]: Start difference. First operand 96 states and 108 transitions. Second operand 7 states. [2019-10-14 23:08:57,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:57,203 INFO L93 Difference]: Finished difference Result 270 states and 328 transitions. [2019-10-14 23:08:57,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:08:57,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2019-10-14 23:08:57,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:57,207 INFO L225 Difference]: With dead ends: 270 [2019-10-14 23:08:57,208 INFO L226 Difference]: Without dead ends: 188 [2019-10-14 23:08:57,209 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 23:08:57,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2019-10-14 23:08:57,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 151. [2019-10-14 23:08:57,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-10-14 23:08:57,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 182 transitions. [2019-10-14 23:08:57,238 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 182 transitions. Word has length 30 [2019-10-14 23:08:57,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:57,238 INFO L462 AbstractCegarLoop]: Abstraction has 151 states and 182 transitions. [2019-10-14 23:08:57,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:08:57,239 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 182 transitions. [2019-10-14 23:08:57,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-14 23:08:57,242 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:57,242 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 23:08:57,242 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:57,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:57,243 INFO L82 PathProgramCache]: Analyzing trace with hash 857482600, now seen corresponding path program 1 times [2019-10-14 23:08:57,243 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:57,243 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689275942] [2019-10-14 23:08:57,244 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:57,244 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:57,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,421 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 23:08:57,422 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689275942] [2019-10-14 23:08:57,422 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644232055] [2019-10-14 23:08:57,422 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 23:08:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:57,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-14 23:08:57,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:08:57,668 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 23:08:57,668 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:08:57,669 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2019-10-14 23:08:57,669 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670348489] [2019-10-14 23:08:57,671 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:08:57,671 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:57,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:08:57,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:08:57,672 INFO L87 Difference]: Start difference. First operand 151 states and 182 transitions. Second operand 4 states. [2019-10-14 23:08:57,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:57,734 INFO L93 Difference]: Finished difference Result 276 states and 332 transitions. [2019-10-14 23:08:57,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:08:57,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2019-10-14 23:08:57,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:57,743 INFO L225 Difference]: With dead ends: 276 [2019-10-14 23:08:57,743 INFO L226 Difference]: Without dead ends: 157 [2019-10-14 23:08:57,748 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 23:08:57,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-10-14 23:08:57,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-10-14 23:08:57,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-10-14 23:08:57,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 188 transitions. [2019-10-14 23:08:57,803 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 188 transitions. Word has length 78 [2019-10-14 23:08:57,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:57,804 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 188 transitions. [2019-10-14 23:08:57,804 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:08:57,804 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 188 transitions. [2019-10-14 23:08:57,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-14 23:08:57,809 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:57,809 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 23:08:58,010 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:58,011 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:58,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:58,011 INFO L82 PathProgramCache]: Analyzing trace with hash -676604102, now seen corresponding path program 1 times [2019-10-14 23:08:58,012 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:58,012 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568217023] [2019-10-14 23:08:58,013 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:58,013 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:58,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:58,521 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 23:08:58,530 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568217023] [2019-10-14 23:08:58,531 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550883088] [2019-10-14 23:08:58,531 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 23:08:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:58,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 55 conjunts are in the unsatisfiable core [2019-10-14 23:08:58,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:08:58,785 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 23:08:58,785 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:08:58,795 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:08:58,799 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 23:08:58,799 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 23:08:58,804 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:08:58,804 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:08:58,805 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2019-10-14 23:08:58,856 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 23:08:58,857 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:08:58,864 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:08:58,868 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 23:08:58,868 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 23:08:58,874 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:08:58,874 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:08:58,875 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2019-10-14 23:08:59,124 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 23:08:59,124 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:08:59,124 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 25 [2019-10-14 23:08:59,125 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372946111] [2019-10-14 23:08:59,125 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:08:59,125 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:59,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:08:59,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2019-10-14 23:08:59,126 INFO L87 Difference]: Start difference. First operand 157 states and 188 transitions. Second operand 10 states. [2019-10-14 23:09:00,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:09:00,612 INFO L93 Difference]: Finished difference Result 333 states and 400 transitions. [2019-10-14 23:09:00,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-14 23:09:00,613 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2019-10-14 23:09:00,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:09:00,617 INFO L225 Difference]: With dead ends: 333 [2019-10-14 23:09:00,617 INFO L226 Difference]: Without dead ends: 206 [2019-10-14 23:09:00,619 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=260, Invalid=1222, Unknown=0, NotChecked=0, Total=1482 [2019-10-14 23:09:00,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2019-10-14 23:09:00,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 149. [2019-10-14 23:09:00,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-10-14 23:09:00,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 173 transitions. [2019-10-14 23:09:00,640 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 173 transitions. Word has length 78 [2019-10-14 23:09:00,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:09:00,641 INFO L462 AbstractCegarLoop]: Abstraction has 149 states and 173 transitions. [2019-10-14 23:09:00,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:09:00,641 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 173 transitions. [2019-10-14 23:09:00,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-14 23:09:00,643 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:09:00,643 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 23:09:00,847 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:09:00,848 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:09:00,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:09:00,848 INFO L82 PathProgramCache]: Analyzing trace with hash 541030350, now seen corresponding path program 1 times [2019-10-14 23:09:00,849 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:09:00,849 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569392374] [2019-10-14 23:09:00,849 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:09:00,849 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:09:00,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:09:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:09:02,839 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569392374] [2019-10-14 23:09:02,839 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385640500] [2019-10-14 23:09:02,839 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 23:09:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:02,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 132 conjunts are in the unsatisfiable core [2019-10-14 23:09:03,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:09:03,067 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 23:09:03,067 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:09:03,075 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:09:03,076 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:09:03,076 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:19 [2019-10-14 23:09:03,433 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:09:03,434 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 23:09:03,435 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:09:03,442 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:09:03,443 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:09:03,443 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:18 [2019-10-14 23:09:03,564 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 23:09:03,564 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:09:03,571 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:09:03,571 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:09:03,572 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:10 [2019-10-14 23:09:04,138 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:09:04,298 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2019-10-14 23:09:04,299 INFO L341 Elim1Store]: treesize reduction 100, result has 50.2 percent of original size [2019-10-14 23:09:04,300 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 23:09:04,301 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:09:04,480 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-10-14 23:09:04,481 INFO L567 ElimStorePlain]: treesize reduction 36, result has 81.2 percent of original size [2019-10-14 23:09:04,482 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:09:04,482 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:09:04,487 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 23:09:04,487 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:161, output treesize:155 [2019-10-14 23:09:04,488 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:09:04,488 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:09:04,728 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:09:04,729 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:09:05,491 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:09:05,492 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:09:08,813 WARN L191 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2019-10-14 23:09:08,823 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-10-14 23:09:22,011 WARN L191 SmtUtils]: Spent 4.45 s on a formula simplification that was a NOOP. DAG size: 155 [2019-10-14 23:09:35,207 WARN L191 SmtUtils]: Spent 3.52 s on a formula simplification. DAG size of input: 153 DAG size of output: 104 [2019-10-14 23:09:35,216 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:09:35,251 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:09:35,269 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:09:35,286 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:09:35,289 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:09:35,295 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:09:35,350 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:09:35,390 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:09:35,412 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-14 23:09:35,533 INFO L341 Elim1Store]: treesize reduction 17, result has 85.1 percent of original size [2019-10-14 23:09:35,533 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 334 treesize of output 192 [2019-10-14 23:09:35,535 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:09:35,543 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:09:35,554 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:09:35,565 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:09:35,569 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:09:35,573 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:09:35,604 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:09:35,616 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-14 23:09:35,688 INFO L341 Elim1Store]: treesize reduction 70, result has 38.6 percent of original size [2019-10-14 23:09:35,688 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 332 treesize of output 137 [2019-10-14 23:09:35,690 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 23:09:35,700 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:09:35,707 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:09:35,709 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:09:35,710 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:09:35,711 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:09:35,936 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2019-10-14 23:09:35,937 INFO L341 Elim1Store]: treesize reduction 148, result has 55.2 percent of original size [2019-10-14 23:09:35,937 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 335 treesize of output 265 [2019-10-14 23:09:35,939 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-14 23:09:36,043 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 40 [2019-10-14 23:09:36,043 INFO L567 ElimStorePlain]: treesize reduction 541, result has 16.6 percent of original size [2019-10-14 23:09:36,044 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:09:36,044 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:1464, output treesize:130 [2019-10-14 23:09:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 23:09:37,838 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:09:37,838 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 29] total 61 [2019-10-14 23:09:37,839 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083715854] [2019-10-14 23:09:37,839 INFO L442 AbstractCegarLoop]: Interpolant automaton has 61 states [2019-10-14 23:09:37,840 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:09:37,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2019-10-14 23:09:37,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=3451, Unknown=5, NotChecked=0, Total=3660 [2019-10-14 23:09:37,842 INFO L87 Difference]: Start difference. First operand 149 states and 173 transitions. Second operand 61 states.