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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-sets/test_mutex_unlock_at_exit.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 02:56:35,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 02:56:35,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 02:56:35,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 02:56:35,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 02:56:35,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 02:56:35,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 02:56:35,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 02:56:35,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 02:56:35,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 02:56:35,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 02:56:35,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 02:56:35,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 02:56:35,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 02:56:35,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 02:56:35,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 02:56:35,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 02:56:35,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 02:56:35,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 02:56:35,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 02:56:35,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 02:56:35,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 02:56:35,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 02:56:35,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 02:56:35,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 02:56:35,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 02:56:35,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 02:56:35,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 02:56:35,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 02:56:35,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 02:56:35,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 02:56:35,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 02:56:35,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 02:56:35,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 02:56:35,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 02:56:35,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 02:56:35,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 02:56:35,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 02:56:35,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 02:56:35,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 02:56:35,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 02:56:35,437 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 [2019-10-15 02:56:35,458 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 02:56:35,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 02:56:35,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 02:56:35,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 02:56:35,461 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 02:56:35,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 02:56:35,461 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 02:56:35,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 02:56:35,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 02:56:35,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 02:56:35,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 02:56:35,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 02:56:35,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 02:56:35,464 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 02:56:35,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 02:56:35,464 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 02:56:35,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 02:56:35,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 02:56:35,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 02:56:35,465 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 02:56:35,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 02:56:35,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:56:35,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 02:56:35,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 02:56:35,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 02:56:35,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 02:56:35,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 02:56:35,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 02:56:35,467 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 02:56:35,732 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 02:56:35,745 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 02:56:35,749 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 02:56:35,750 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 02:56:35,751 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 02:56:35,752 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_unlock_at_exit.i [2019-10-15 02:56:35,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a816292ba/2d9dae2239a241f58d2eebbea72667f9/FLAG53f9795fe [2019-10-15 02:56:36,421 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 02:56:36,422 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unlock_at_exit.i [2019-10-15 02:56:36,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a816292ba/2d9dae2239a241f58d2eebbea72667f9/FLAG53f9795fe [2019-10-15 02:56:36,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a816292ba/2d9dae2239a241f58d2eebbea72667f9 [2019-10-15 02:56:36,694 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 02:56:36,695 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 02:56:36,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 02:56:36,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 02:56:36,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 02:56:36,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:56:36" (1/1) ... [2019-10-15 02:56:36,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29e31cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:36, skipping insertion in model container [2019-10-15 02:56:36,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:56:36" (1/1) ... [2019-10-15 02:56:36,709 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 02:56:36,748 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 02:56:37,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:56:37,244 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 02:56:37,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:56:37,404 INFO L192 MainTranslator]: Completed translation [2019-10-15 02:56:37,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:37 WrapperNode [2019-10-15 02:56:37,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 02:56:37,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 02:56:37,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 02:56:37,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 02:56:37,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:37" (1/1) ... [2019-10-15 02:56:37,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:37" (1/1) ... [2019-10-15 02:56:37,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:37" (1/1) ... [2019-10-15 02:56:37,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:37" (1/1) ... [2019-10-15 02:56:37,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:37" (1/1) ... [2019-10-15 02:56:37,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:37" (1/1) ... [2019-10-15 02:56:37,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:37" (1/1) ... [2019-10-15 02:56:37,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 02:56:37,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 02:56:37,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 02:56:37,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 02:56:37,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:37" (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 [2019-10-15 02:56:37,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 02:56:37,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 02:56:37,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 02:56:37,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 02:56:37,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-15 02:56:37,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2019-10-15 02:56:37,550 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-10-15 02:56:37,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-10-15 02:56:37,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-10-15 02:56:37,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-10-15 02:56:37,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-10-15 02:56:37,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-10-15 02:56:37,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2019-10-15 02:56:37,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2019-10-15 02:56:37,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-15 02:56:37,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2019-10-15 02:56:37,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2019-10-15 02:56:37,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2019-10-15 02:56:37,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-15 02:56:37,553 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-10-15 02:56:37,553 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-15 02:56:37,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-15 02:56:37,553 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-10-15 02:56:37,553 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 02:56:37,554 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 02:56:37,554 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 02:56:37,554 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 02:56:37,554 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 02:56:37,554 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 02:56:37,554 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 02:56:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 02:56:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 02:56:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 02:56:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 02:56:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 02:56:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 02:56:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 02:56:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 02:56:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 02:56:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 02:56:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 02:56:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 02:56:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 02:56:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 02:56:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 02:56:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 02:56:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 02:56:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 02:56:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 02:56:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 02:56:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 02:56:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 02:56:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 02:56:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 02:56:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 02:56:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 02:56:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 02:56:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 02:56:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 02:56:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 02:56:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 02:56:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 02:56:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 02:56:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 02:56:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 02:56:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 02:56:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 02:56:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 02:56:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 02:56:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 02:56:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 02:56:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 02:56:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 02:56:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 02:56:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 02:56:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 02:56:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 02:56:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 02:56:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 02:56:37,565 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 02:56:37,565 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 02:56:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 02:56:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 02:56:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 02:56:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 02:56:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 02:56:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 02:56:37,567 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 02:56:37,567 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 02:56:37,568 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 02:56:37,568 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 02:56:37,568 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 02:56:37,568 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 02:56:37,568 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 02:56:37,568 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 02:56:37,568 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 02:56:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 02:56:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 02:56:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 02:56:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 02:56:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 02:56:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 02:56:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 02:56:37,570 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 02:56:37,570 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 02:56:37,570 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 02:56:37,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 02:56:37,570 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 02:56:37,570 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 02:56:37,570 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 02:56:37,571 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 02:56:37,571 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 02:56:37,571 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 02:56:37,571 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 02:56:37,571 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 02:56:37,571 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 02:56:37,572 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 02:56:37,572 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 02:56:37,572 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 02:56:37,573 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 02:56:37,573 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 02:56:37,574 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 02:56:37,574 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 02:56:37,574 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 02:56:37,574 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 02:56:37,574 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 02:56:37,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 02:56:37,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 02:56:37,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 02:56:37,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 02:56:37,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-15 02:56:37,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 02:56:37,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2019-10-15 02:56:37,577 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-10-15 02:56:37,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 02:56:37,580 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-10-15 02:56:37,580 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-10-15 02:56:37,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-10-15 02:56:37,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 02:56:37,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-10-15 02:56:37,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-10-15 02:56:37,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2019-10-15 02:56:37,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2019-10-15 02:56:37,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-15 02:56:37,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2019-10-15 02:56:37,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2019-10-15 02:56:37,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2019-10-15 02:56:37,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 02:56:37,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-15 02:56:37,590 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-10-15 02:56:37,590 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-15 02:56:37,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-15 02:56:37,590 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-10-15 02:56:37,591 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 02:56:37,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 02:56:37,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 02:56:37,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 02:56:37,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 02:56:38,450 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 02:56:38,450 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-15 02:56:38,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:56:38 BoogieIcfgContainer [2019-10-15 02:56:38,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 02:56:38,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 02:56:38,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 02:56:38,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 02:56:38,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:56:36" (1/3) ... [2019-10-15 02:56:38,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2d9c82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:56:38, skipping insertion in model container [2019-10-15 02:56:38,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:37" (2/3) ... [2019-10-15 02:56:38,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2d9c82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:56:38, skipping insertion in model container [2019-10-15 02:56:38,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:56:38" (3/3) ... [2019-10-15 02:56:38,459 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_unlock_at_exit.i [2019-10-15 02:56:38,467 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 02:56:38,473 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-15 02:56:38,482 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-15 02:56:38,502 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 02:56:38,502 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 02:56:38,502 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 02:56:38,502 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 02:56:38,503 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 02:56:38,503 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 02:56:38,503 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 02:56:38,503 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 02:56:38,519 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2019-10-15 02:56:38,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-15 02:56:38,524 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:56:38,525 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 02:56:38,527 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:56:38,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:56:38,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1871921088, now seen corresponding path program 1 times [2019-10-15 02:56:38,542 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:56:38,543 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447367613] [2019-10-15 02:56:38,543 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:38,543 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:38,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:56:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:38,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 02:56:38,825 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447367613] [2019-10-15 02:56:38,826 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:56:38,827 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 02:56:38,827 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394025839] [2019-10-15 02:56:38,832 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 02:56:38,832 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:56:38,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 02:56:38,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 02:56:38,849 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 4 states. [2019-10-15 02:56:38,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:56:38,936 INFO L93 Difference]: Finished difference Result 167 states and 195 transitions. [2019-10-15 02:56:38,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 02:56:38,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2019-10-15 02:56:38,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:56:38,952 INFO L225 Difference]: With dead ends: 167 [2019-10-15 02:56:38,952 INFO L226 Difference]: Without dead ends: 84 [2019-10-15 02:56:38,956 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 02:56:38,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-10-15 02:56:39,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2019-10-15 02:56:39,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2019-10-15 02:56:39,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2019-10-15 02:56:39,010 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 26 [2019-10-15 02:56:39,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:56:39,011 INFO L462 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2019-10-15 02:56:39,011 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 02:56:39,011 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2019-10-15 02:56:39,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-15 02:56:39,013 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:56:39,013 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 02:56:39,013 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:56:39,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:56:39,014 INFO L82 PathProgramCache]: Analyzing trace with hash -408449523, now seen corresponding path program 1 times [2019-10-15 02:56:39,014 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:56:39,014 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932959194] [2019-10-15 02:56:39,014 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:39,014 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:39,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:56:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:39,309 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2019-10-15 02:56:39,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 02:56:39,345 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932959194] [2019-10-15 02:56:39,345 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:56:39,346 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 02:56:39,346 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240903456] [2019-10-15 02:56:39,351 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 02:56:39,351 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:56:39,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 02:56:39,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:56:39,352 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand 5 states. [2019-10-15 02:56:39,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:56:39,989 INFO L93 Difference]: Finished difference Result 223 states and 272 transitions. [2019-10-15 02:56:39,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 02:56:39,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-10-15 02:56:39,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:56:39,993 INFO L225 Difference]: With dead ends: 223 [2019-10-15 02:56:39,994 INFO L226 Difference]: Without dead ends: 152 [2019-10-15 02:56:39,998 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-15 02:56:39,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-10-15 02:56:40,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 122. [2019-10-15 02:56:40,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2019-10-15 02:56:40,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 147 transitions. [2019-10-15 02:56:40,028 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 147 transitions. Word has length 27 [2019-10-15 02:56:40,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:56:40,029 INFO L462 AbstractCegarLoop]: Abstraction has 122 states and 147 transitions. [2019-10-15 02:56:40,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 02:56:40,029 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 147 transitions. [2019-10-15 02:56:40,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-15 02:56:40,032 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:56:40,033 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2019-10-15 02:56:40,033 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:56:40,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:56:40,034 INFO L82 PathProgramCache]: Analyzing trace with hash 870081906, now seen corresponding path program 1 times [2019-10-15 02:56:40,034 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:56:40,034 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551071407] [2019-10-15 02:56:40,035 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:40,035 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:40,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:56:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:40,170 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 02:56:40,170 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551071407] [2019-10-15 02:56:40,170 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082657661] [2019-10-15 02:56:40,170 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 [2019-10-15 02:56:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:40,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 02:56:40,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:56:40,378 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 02:56:40,378 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:56:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 02:56:40,525 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 02:56:40,526 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 4 [2019-10-15 02:56:40,526 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422406754] [2019-10-15 02:56:40,528 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 02:56:40,528 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:56:40,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 02:56:40,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 02:56:40,529 INFO L87 Difference]: Start difference. First operand 122 states and 147 transitions. Second operand 4 states. [2019-10-15 02:56:40,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:56:40,569 INFO L93 Difference]: Finished difference Result 220 states and 266 transitions. [2019-10-15 02:56:40,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 02:56:40,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2019-10-15 02:56:40,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:56:40,572 INFO L225 Difference]: With dead ends: 220 [2019-10-15 02:56:40,573 INFO L226 Difference]: Without dead ends: 128 [2019-10-15 02:56:40,574 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 02:56:40,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2019-10-15 02:56:40,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2019-10-15 02:56:40,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-10-15 02:56:40,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 153 transitions. [2019-10-15 02:56:40,595 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 153 transitions. Word has length 70 [2019-10-15 02:56:40,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:56:40,595 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 153 transitions. [2019-10-15 02:56:40,595 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 02:56:40,595 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 153 transitions. [2019-10-15 02:56:40,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-15 02:56:40,598 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:56:40,599 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:56:40,809 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:56:40,810 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:56:40,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:56:40,810 INFO L82 PathProgramCache]: Analyzing trace with hash 185405279, now seen corresponding path program 1 times [2019-10-15 02:56:40,811 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:56:40,811 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450039711] [2019-10-15 02:56:40,811 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:40,812 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:40,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:56:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:41,321 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 02:56:41,321 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450039711] [2019-10-15 02:56:41,322 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:56:41,322 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-15 02:56:41,322 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682363541] [2019-10-15 02:56:41,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 02:56:41,323 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:56:41,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 02:56:41,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-15 02:56:41,323 INFO L87 Difference]: Start difference. First operand 128 states and 153 transitions. Second operand 15 states. [2019-10-15 02:56:43,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:56:43,052 INFO L93 Difference]: Finished difference Result 234 states and 277 transitions. [2019-10-15 02:56:43,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-15 02:56:43,053 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 82 [2019-10-15 02:56:43,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:56:43,056 INFO L225 Difference]: With dead ends: 234 [2019-10-15 02:56:43,056 INFO L226 Difference]: Without dead ends: 168 [2019-10-15 02:56:43,058 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 02:56:43,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-10-15 02:56:43,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 139. [2019-10-15 02:56:43,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-10-15 02:56:43,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 167 transitions. [2019-10-15 02:56:43,082 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 167 transitions. Word has length 82 [2019-10-15 02:56:43,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:56:43,083 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 167 transitions. [2019-10-15 02:56:43,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 02:56:43,083 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 167 transitions. [2019-10-15 02:56:43,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-15 02:56:43,086 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:56:43,086 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 3, 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] [2019-10-15 02:56:43,086 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:56:43,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:56:43,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1034287076, now seen corresponding path program 1 times [2019-10-15 02:56:43,087 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:56:43,087 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420575276] [2019-10-15 02:56:43,088 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:43,088 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:43,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:56:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:43,558 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 02:56:43,558 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420575276] [2019-10-15 02:56:43,558 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884640003] [2019-10-15 02:56:43,559 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 [2019-10-15 02:56:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:43,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 55 conjunts are in the unsatisfiable core [2019-10-15 02:56:43,719 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:56:43,784 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 [2019-10-15 02:56:43,784 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 02:56:43,796 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:56:43,799 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 [2019-10-15 02:56:43,799 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 02:56:43,806 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:56:43,807 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 02:56:43,807 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:13 [2019-10-15 02:56:43,877 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 [2019-10-15 02:56:43,878 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 02:56:43,886 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:56:43,889 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 [2019-10-15 02:56:43,890 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 02:56:43,895 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:56:43,895 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 02:56:43,896 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:13 [2019-10-15 02:56:44,100 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 02:56:44,100 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:56:44,593 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 02:56:44,612 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 8 treesize of output 4 [2019-10-15 02:56:44,612 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 02:56:44,631 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:56:44,638 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 8 treesize of output 4 [2019-10-15 02:56:44,638 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 02:56:44,647 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:56:44,648 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 02:56:44,648 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:25 [2019-10-15 02:56:44,822 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 02:56:44,829 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 8 treesize of output 4 [2019-10-15 02:56:44,830 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 02:56:44,836 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:56:44,840 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 8 treesize of output 4 [2019-10-15 02:56:44,840 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 02:56:44,846 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:56:44,847 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 02:56:44,847 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-10-15 02:56:44,966 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 02:56:45,046 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 02:56:45,063 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 40 treesize of output 36 [2019-10-15 02:56:45,063 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 02:56:45,068 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 40 treesize of output 36 [2019-10-15 02:56:45,069 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 02:56:45,087 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:56:45,091 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 32 treesize of output 28 [2019-10-15 02:56:45,092 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-15 02:56:45,100 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 32 treesize of output 28 [2019-10-15 02:56:45,101 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-10-15 02:56:45,118 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:56:45,118 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-15 02:56:45,119 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:81, output treesize:49 [2019-10-15 02:56:45,150 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 02:56:45,156 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 02:56:45,231 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 02:56:45,232 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 02:56:45,232 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15, 10] total 30 [2019-10-15 02:56:45,238 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726178209] [2019-10-15 02:56:45,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 02:56:45,240 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:56:45,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 02:56:45,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2019-10-15 02:56:45,241 INFO L87 Difference]: Start difference. First operand 139 states and 167 transitions. Second operand 10 states. [2019-10-15 02:56:46,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:56:46,407 INFO L93 Difference]: Finished difference Result 261 states and 308 transitions. [2019-10-15 02:56:46,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-15 02:56:46,408 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2019-10-15 02:56:46,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:56:46,411 INFO L225 Difference]: With dead ends: 261 [2019-10-15 02:56:46,411 INFO L226 Difference]: Without dead ends: 147 [2019-10-15 02:56:46,413 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 132 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=368, Invalid=1438, Unknown=0, NotChecked=0, Total=1806 [2019-10-15 02:56:46,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-10-15 02:56:46,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 119. [2019-10-15 02:56:46,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-10-15 02:56:46,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 135 transitions. [2019-10-15 02:56:46,432 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 135 transitions. Word has length 72 [2019-10-15 02:56:46,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:56:46,433 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 135 transitions. [2019-10-15 02:56:46,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 02:56:46,433 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 135 transitions. [2019-10-15 02:56:46,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-15 02:56:46,435 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:56:46,435 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2019-10-15 02:56:46,639 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:56:46,640 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:56:46,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:56:46,640 INFO L82 PathProgramCache]: Analyzing trace with hash 44411436, now seen corresponding path program 1 times [2019-10-15 02:56:46,641 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:56:46,641 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111668235] [2019-10-15 02:56:46,641 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:46,642 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:46,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:56:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:48,094 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 02:56:48,095 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111668235] [2019-10-15 02:56:48,095 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840349516] [2019-10-15 02:56:48,095 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 [2019-10-15 02:56:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:48,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 132 conjunts are in the unsatisfiable core [2019-10-15 02:56:48,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:56:48,328 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 [2019-10-15 02:56:48,328 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 02:56:48,335 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:56:48,335 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-15 02:56:48,336 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:19 [2019-10-15 02:56:48,647 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:56:48,647 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 [2019-10-15 02:56:48,648 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 02:56:48,655 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:56:48,655 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-15 02:56:48,656 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:18 [2019-10-15 02:56:48,778 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 [2019-10-15 02:56:48,779 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 02:56:48,783 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:56:48,783 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 02:56:48,783 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:10 [2019-10-15 02:56:49,345 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 02:56:49,504 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2019-10-15 02:56:49,504 INFO L341 Elim1Store]: treesize reduction 100, result has 50.2 percent of original size [2019-10-15 02:56:49,505 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 [2019-10-15 02:56:49,506 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 02:56:49,662 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-10-15 02:56:49,663 INFO L567 ElimStorePlain]: treesize reduction 36, result has 81.2 percent of original size [2019-10-15 02:56:49,663 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 02:56:49,664 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:56:49,665 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. [2019-10-15 02:56:49,666 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:161, output treesize:155 [2019-10-15 02:56:49,666 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 02:56:49,666 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:56:49,878 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:56:49,878 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 02:56:51,801 WARN L191 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2019-10-15 02:56:51,807 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-10-15 02:57:02,447 WARN L191 SmtUtils]: Spent 3.04 s on a formula simplification that was a NOOP. DAG size: 155 [2019-10-15 02:57:17,400 WARN L191 SmtUtils]: Spent 4.69 s on a formula simplification. DAG size of input: 153 DAG size of output: 104 [2019-10-15 02:57:17,411 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 02:57:17,429 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 02:57:17,444 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 02:57:17,464 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 02:57:17,468 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 02:57:17,472 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 02:57:17,529 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 02:57:17,577 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 02:57:17,578 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 02:57:17,711 INFO L341 Elim1Store]: treesize reduction 70, result has 38.6 percent of original size [2019-10-15 02:57:17,712 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 332 treesize of output 137 [2019-10-15 02:57:17,713 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 02:57:17,722 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 02:57:17,731 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 02:57:17,747 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 02:57:17,751 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 02:57:17,753 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 02:57:18,040 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2019-10-15 02:57:18,040 INFO L341 Elim1Store]: treesize reduction 148, result has 55.2 percent of original size [2019-10-15 02:57:18,040 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 [2019-10-15 02:57:18,041 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 02:57:18,045 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 02:57:18,051 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 02:57:18,052 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 02:57:18,054 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 02:57:18,055 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 02:57:18,064 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 02:57:18,069 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 02:57:18,075 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 02:57:18,146 INFO L341 Elim1Store]: treesize reduction 17, result has 85.1 percent of original size [2019-10-15 02:57:18,147 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 [2019-10-15 02:57:18,149 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-15 02:57:18,252 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 40 [2019-10-15 02:57:18,252 INFO L567 ElimStorePlain]: treesize reduction 501, result has 17.7 percent of original size [2019-10-15 02:57:18,254 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 02:57:18,254 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:1464, output treesize:130 [2019-10-15 02:57:20,010 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 02:57:20,011 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:57:22,003 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2019-10-15 02:57:22,426 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2019-10-15 02:57:22,539 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2019-10-15 02:57:22,683 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2019-10-15 02:57:22,824 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2019-10-15 02:57:22,985 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2019-10-15 02:57:23,188 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2019-10-15 02:57:23,293 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 59