/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:11:09,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:11:09,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:11:09,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:11:09,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:11:09,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:11:09,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:11:09,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:11:09,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:11:09,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:11:09,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:11:09,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:11:09,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:11:09,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:11:09,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:11:09,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:11:09,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:11:09,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:11:09,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:11:09,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:11:09,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:11:09,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:11:09,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:11:09,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:11:09,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:11:09,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:11:09,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:11:09,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:11:09,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:11:09,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:11:09,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:11:09,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:11:09,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:11:09,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:11:09,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:11:09,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:11:09,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:11:09,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:11:09,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:11:09,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:11:09,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:11:09,393 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 [2019-11-06 21:11:09,416 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:11:09,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:11:09,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:11:09,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:11:09,420 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:11:09,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:11:09,421 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:11:09,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:11:09,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:11:09,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:11:09,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:11:09,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:11:09,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:11:09,422 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:11:09,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:11:09,423 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:11:09,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:11:09,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:11:09,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:11:09,424 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:11:09,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:11:09,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:11:09,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:11:09,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:11:09,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:11:09,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:11:09,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:11:09,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:11:09,427 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:11:09,709 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:11:09,726 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:11:09,732 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:11:09,733 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:11:09,733 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:11:09,734 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i [2019-11-06 21:11:09,809 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5f100576/aee7f756930444d4bf2b14219c062dba/FLAG5104c9c92 [2019-11-06 21:11:10,394 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:11:10,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i [2019-11-06 21:11:10,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5f100576/aee7f756930444d4bf2b14219c062dba/FLAG5104c9c92 [2019-11-06 21:11:10,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5f100576/aee7f756930444d4bf2b14219c062dba [2019-11-06 21:11:10,695 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:11:10,697 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:11:10,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:11:10,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:11:10,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:11:10,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:11:10" (1/1) ... [2019-11-06 21:11:10,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a4f1832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:10, skipping insertion in model container [2019-11-06 21:11:10,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:11:10" (1/1) ... [2019-11-06 21:11:10,713 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:11:10,764 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:11:11,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:11:11,250 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:11:11,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:11:11,394 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:11:11,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:11 WrapperNode [2019-11-06 21:11:11,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:11:11,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:11:11,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:11:11,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:11:11,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:11" (1/1) ... [2019-11-06 21:11:11,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:11" (1/1) ... [2019-11-06 21:11:11,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:11" (1/1) ... [2019-11-06 21:11:11,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:11" (1/1) ... [2019-11-06 21:11:11,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:11" (1/1) ... [2019-11-06 21:11:11,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:11" (1/1) ... [2019-11-06 21:11:11,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:11" (1/1) ... [2019-11-06 21:11:11,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:11:11,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:11:11,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:11:11,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:11:11,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:11" (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 [2019-11-06 21:11:11,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:11:11,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:11:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-06 21:11:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-06 21:11:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-06 21:11:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2019-11-06 21:11:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-11-06 21:11:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-11-06 21:11:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-11-06 21:11:11,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-11-06 21:11:11,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-11-06 21:11:11,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-11-06 21:11:11,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2019-11-06 21:11:11,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2019-11-06 21:11:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-11-06 21:11:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2019-11-06 21:11:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2019-11-06 21:11:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2019-11-06 21:11:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-06 21:11:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-11-06 21:11:11,536 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-11-06 21:11:11,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-06 21:11:11,536 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-11-06 21:11:11,536 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:11:11,536 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-06 21:11:11,536 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-06 21:11:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-06 21:11:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-06 21:11:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-06 21:11:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-06 21:11:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-06 21:11:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-06 21:11:11,538 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-06 21:11:11,538 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-06 21:11:11,538 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-06 21:11:11,538 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-06 21:11:11,538 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-06 21:11:11,538 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-06 21:11:11,538 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-06 21:11:11,539 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-06 21:11:11,539 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-06 21:11:11,539 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-06 21:11:11,539 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-06 21:11:11,539 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-06 21:11:11,539 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-06 21:11:11,540 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-06 21:11:11,540 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-06 21:11:11,540 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-06 21:11:11,540 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-06 21:11:11,540 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-06 21:11:11,540 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-06 21:11:11,541 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-06 21:11:11,541 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-06 21:11:11,541 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-06 21:11:11,541 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-06 21:11:11,541 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-06 21:11:11,541 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-06 21:11:11,541 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-06 21:11:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-06 21:11:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-06 21:11:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-06 21:11:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-06 21:11:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-06 21:11:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-06 21:11:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-06 21:11:11,543 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-06 21:11:11,543 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-06 21:11:11,543 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-06 21:11:11,543 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-06 21:11:11,543 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-06 21:11:11,543 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-06 21:11:11,543 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-06 21:11:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-06 21:11:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-06 21:11:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-06 21:11:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-06 21:11:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:11:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-06 21:11:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-06 21:11:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:11:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-06 21:11:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-06 21:11:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-06 21:11:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-06 21:11:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-06 21:11:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-06 21:11:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-06 21:11:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 21:11:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-06 21:11:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-06 21:11:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-06 21:11:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-06 21:11:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-06 21:11:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-06 21:11:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-06 21:11:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-06 21:11:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-06 21:11:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-06 21:11:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-06 21:11:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-06 21:11:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-06 21:11:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-06 21:11:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-06 21:11:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-06 21:11:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-06 21:11:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-06 21:11:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-06 21:11:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-06 21:11:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-06 21:11:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-06 21:11:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-06 21:11:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-06 21:11:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-06 21:11:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-06 21:11:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-06 21:11:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-06 21:11:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-06 21:11:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-06 21:11:11,551 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-06 21:11:11,551 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-06 21:11:11,551 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-06 21:11:11,551 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-06 21:11:11,551 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-06 21:11:11,551 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-06 21:11:11,551 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-06 21:11:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-06 21:11:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:11:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 21:11:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:11:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-06 21:11:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-06 21:11:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:11:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2019-11-06 21:11:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-11-06 21:11:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:11:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-11-06 21:11:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-11-06 21:11:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-11-06 21:11:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:11:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-11-06 21:11:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-11-06 21:11:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2019-11-06 21:11:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2019-11-06 21:11:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-11-06 21:11:11,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2019-11-06 21:11:11,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2019-11-06 21:11:11,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2019-11-06 21:11:11,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:11:11,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-06 21:11:11,555 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-11-06 21:11:11,556 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-11-06 21:11:11,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-06 21:11:11,556 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-11-06 21:11:11,556 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:11:11,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:11:11,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:11:11,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-06 21:11:11,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:11:12,185 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:11:12,185 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-06 21:11:12,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:11:12 BoogieIcfgContainer [2019-11-06 21:11:12,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:11:12,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:11:12,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:11:12,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:11:12,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:11:10" (1/3) ... [2019-11-06 21:11:12,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e6cc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:11:12, skipping insertion in model container [2019-11-06 21:11:12,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:11:11" (2/3) ... [2019-11-06 21:11:12,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e6cc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:11:12, skipping insertion in model container [2019-11-06 21:11:12,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:11:12" (3/3) ... [2019-11-06 21:11:12,201 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_double_unlock.i [2019-11-06 21:11:12,211 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:11:12,222 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-06 21:11:12,234 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-06 21:11:12,269 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:11:12,269 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:11:12,269 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:11:12,269 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:11:12,270 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:11:12,270 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:11:12,270 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:11:12,270 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:11:12,304 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states. [2019-11-06 21:11:12,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-06 21:11:12,312 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:11:12,313 INFO L410 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] [2019-11-06 21:11:12,316 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:11:12,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:11:12,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1643511096, now seen corresponding path program 1 times [2019-11-06 21:11:12,331 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:11:12,331 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496666887] [2019-11-06 21:11:12,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:11:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:11:12,702 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496666887] [2019-11-06 21:11:12,703 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:11:12,704 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:11:12,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292184611] [2019-11-06 21:11:12,711 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:11:12,711 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:11:12,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:11:12,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:11:12,726 INFO L87 Difference]: Start difference. First operand 104 states. Second operand 4 states. [2019-11-06 21:11:13,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:11:13,034 INFO L93 Difference]: Finished difference Result 201 states and 244 transitions. [2019-11-06 21:11:13,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:11:13,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-11-06 21:11:13,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:11:13,049 INFO L225 Difference]: With dead ends: 201 [2019-11-06 21:11:13,049 INFO L226 Difference]: Without dead ends: 105 [2019-11-06 21:11:13,053 INFO L630 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 [2019-11-06 21:11:13,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-11-06 21:11:13,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 92. [2019-11-06 21:11:13,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-11-06 21:11:13,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2019-11-06 21:11:13,152 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 30 [2019-11-06 21:11:13,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:11:13,153 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2019-11-06 21:11:13,153 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:11:13,153 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2019-11-06 21:11:13,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-06 21:11:13,158 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:11:13,158 INFO L410 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] [2019-11-06 21:11:13,158 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:11:13,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:11:13,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1928613314, now seen corresponding path program 1 times [2019-11-06 21:11:13,159 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:11:13,160 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137830991] [2019-11-06 21:11:13,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:11:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:11:13,431 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137830991] [2019-11-06 21:11:13,431 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:11:13,431 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 21:11:13,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797074515] [2019-11-06 21:11:13,434 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 21:11:13,434 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:11:13,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 21:11:13,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:11:13,435 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand 6 states. [2019-11-06 21:11:13,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:11:13,843 INFO L93 Difference]: Finished difference Result 111 states and 128 transitions. [2019-11-06 21:11:13,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:11:13,844 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-11-06 21:11:13,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:11:13,847 INFO L225 Difference]: With dead ends: 111 [2019-11-06 21:11:13,847 INFO L226 Difference]: Without dead ends: 109 [2019-11-06 21:11:13,849 INFO L630 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 [2019-11-06 21:11:13,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-11-06 21:11:13,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 96. [2019-11-06 21:11:13,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-11-06 21:11:13,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 108 transitions. [2019-11-06 21:11:13,868 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 108 transitions. Word has length 30 [2019-11-06 21:11:13,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:11:13,868 INFO L462 AbstractCegarLoop]: Abstraction has 96 states and 108 transitions. [2019-11-06 21:11:13,869 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 21:11:13,869 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 108 transitions. [2019-11-06 21:11:13,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-06 21:11:13,870 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:11:13,870 INFO L410 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] [2019-11-06 21:11:13,871 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:11:13,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:11:13,871 INFO L82 PathProgramCache]: Analyzing trace with hash -354010009, now seen corresponding path program 1 times [2019-11-06 21:11:13,871 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:11:13,872 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393034263] [2019-11-06 21:11:13,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:11:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:14,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:11:14,123 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393034263] [2019-11-06 21:11:14,123 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:11:14,123 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 21:11:14,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241074273] [2019-11-06 21:11:14,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:11:14,124 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:11:14,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:11:14,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:11:14,126 INFO L87 Difference]: Start difference. First operand 96 states and 108 transitions. Second operand 7 states. [2019-11-06 21:11:15,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:11:15,253 INFO L93 Difference]: Finished difference Result 270 states and 328 transitions. [2019-11-06 21:11:15,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 21:11:15,253 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2019-11-06 21:11:15,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:11:15,258 INFO L225 Difference]: With dead ends: 270 [2019-11-06 21:11:15,258 INFO L226 Difference]: Without dead ends: 188 [2019-11-06 21:11:15,259 INFO L630 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 [2019-11-06 21:11:15,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2019-11-06 21:11:15,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 151. [2019-11-06 21:11:15,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-11-06 21:11:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 182 transitions. [2019-11-06 21:11:15,286 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 182 transitions. Word has length 30 [2019-11-06 21:11:15,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:11:15,287 INFO L462 AbstractCegarLoop]: Abstraction has 151 states and 182 transitions. [2019-11-06 21:11:15,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:11:15,287 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 182 transitions. [2019-11-06 21:11:15,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-06 21:11:15,290 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:11:15,290 INFO L410 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] [2019-11-06 21:11:15,290 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:11:15,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:11:15,291 INFO L82 PathProgramCache]: Analyzing trace with hash 857482600, now seen corresponding path program 1 times [2019-11-06 21:11:15,291 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:11:15,291 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751129518] [2019-11-06 21:11:15,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:11:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:15,474 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-11-06 21:11:15,474 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751129518] [2019-11-06 21:11:15,475 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078016710] [2019-11-06 21:11:15,475 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 [2019-11-06 21:11:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:15,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-06 21:11:15,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:11:15,710 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-11-06 21:11:15,711 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:11:15,711 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2019-11-06 21:11:15,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562215363] [2019-11-06 21:11:15,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:11:15,712 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:11:15,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:11:15,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:11:15,713 INFO L87 Difference]: Start difference. First operand 151 states and 182 transitions. Second operand 4 states. [2019-11-06 21:11:15,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:11:15,738 INFO L93 Difference]: Finished difference Result 276 states and 332 transitions. [2019-11-06 21:11:15,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:11:15,739 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2019-11-06 21:11:15,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:11:15,764 INFO L225 Difference]: With dead ends: 276 [2019-11-06 21:11:15,764 INFO L226 Difference]: Without dead ends: 157 [2019-11-06 21:11:15,766 INFO L630 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 [2019-11-06 21:11:15,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-11-06 21:11:15,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-11-06 21:11:15,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-11-06 21:11:15,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 188 transitions. [2019-11-06 21:11:15,792 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 188 transitions. Word has length 78 [2019-11-06 21:11:15,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:11:15,792 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 188 transitions. [2019-11-06 21:11:15,792 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:11:15,794 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 188 transitions. [2019-11-06 21:11:15,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-06 21:11:15,800 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:11:15,801 INFO L410 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] [2019-11-06 21:11:16,002 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:11:16,003 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:11:16,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:11:16,004 INFO L82 PathProgramCache]: Analyzing trace with hash -676604102, now seen corresponding path program 1 times [2019-11-06 21:11:16,004 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:11:16,005 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020229318] [2019-11-06 21:11:16,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:11:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:16,441 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-06 21:11:16,441 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020229318] [2019-11-06 21:11:16,441 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362635420] [2019-11-06 21:11:16,442 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 [2019-11-06 21:11:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:16,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 55 conjunts are in the unsatisfiable core [2019-11-06 21:11:16,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:11:16,700 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 [2019-11-06 21:11:16,700 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:11:16,710 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:11:16,716 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 [2019-11-06 21:11:16,716 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 21:11:16,730 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:11:16,731 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:11:16,731 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2019-11-06 21:11:16,785 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 [2019-11-06 21:11:16,786 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:11:16,794 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:11:16,797 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 [2019-11-06 21:11:16,798 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 21:11:16,803 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:11:16,804 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:11:16,804 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2019-11-06 21:11:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-11-06 21:11:17,047 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:11:17,047 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 25 [2019-11-06 21:11:17,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617993807] [2019-11-06 21:11:17,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:11:17,048 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:11:17,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:11:17,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2019-11-06 21:11:17,049 INFO L87 Difference]: Start difference. First operand 157 states and 188 transitions. Second operand 10 states. [2019-11-06 21:11:18,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:11:18,456 INFO L93 Difference]: Finished difference Result 333 states and 400 transitions. [2019-11-06 21:11:18,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-06 21:11:18,456 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2019-11-06 21:11:18,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:11:18,461 INFO L225 Difference]: With dead ends: 333 [2019-11-06 21:11:18,461 INFO L226 Difference]: Without dead ends: 206 [2019-11-06 21:11:18,463 INFO L630 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 [2019-11-06 21:11:18,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2019-11-06 21:11:18,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 149. [2019-11-06 21:11:18,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-11-06 21:11:18,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 173 transitions. [2019-11-06 21:11:18,507 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 173 transitions. Word has length 78 [2019-11-06 21:11:18,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:11:18,508 INFO L462 AbstractCegarLoop]: Abstraction has 149 states and 173 transitions. [2019-11-06 21:11:18,508 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:11:18,508 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 173 transitions. [2019-11-06 21:11:18,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-06 21:11:18,512 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:11:18,513 INFO L410 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] [2019-11-06 21:11:18,713 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:11:18,714 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:11:18,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:11:18,714 INFO L82 PathProgramCache]: Analyzing trace with hash 541030350, now seen corresponding path program 1 times [2019-11-06 21:11:18,715 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:11:18,715 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369754783] [2019-11-06 21:11:18,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:11:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:20,613 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-06 21:11:20,614 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369754783] [2019-11-06 21:11:20,614 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947382238] [2019-11-06 21:11:20,614 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 [2019-11-06 21:11:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:11:20,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 132 conjunts are in the unsatisfiable core [2019-11-06 21:11:20,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:11:20,846 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 [2019-11-06 21:11:20,846 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:11:20,853 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:11:20,854 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:11:20,854 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:19 [2019-11-06 21:11:21,180 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:11:21,181 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 [2019-11-06 21:11:21,181 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:11:21,189 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:11:21,190 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:11:21,190 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:18 [2019-11-06 21:11:21,304 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 [2019-11-06 21:11:21,305 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:11:21,310 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:11:21,310 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:11:21,310 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:10 [2019-11-06 21:11:21,841 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:11:22,001 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2019-11-06 21:11:22,002 INFO L341 Elim1Store]: treesize reduction 100, result has 50.2 percent of original size [2019-11-06 21:11:22,004 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 [2019-11-06 21:11:22,004 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:11:22,177 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-11-06 21:11:22,177 INFO L567 ElimStorePlain]: treesize reduction 36, result has 81.2 percent of original size [2019-11-06 21:11:22,178 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 21:11:22,179 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:11:22,183 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. [2019-11-06 21:11:22,183 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:161, output treesize:155 [2019-11-06 21:11:22,184 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 21:11:22,184 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:11:22,431 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 21:11:22,432 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:11:23,147 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:11:23,148 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 21:11:26,906 WARN L191 SmtUtils]: Spent 2.90 s on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2019-11-06 21:11:26,918 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-06 21:11:47,090 WARN L191 SmtUtils]: Spent 10.89 s on a formula simplification that was a NOOP. DAG size: 155