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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/ldv-sets/test_mutex_unlock_at_exit.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:01:47,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:01:47,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:01:47,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:01:47,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:01:47,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:01:47,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:01:47,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:01:47,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:01:47,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:01:47,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:01:47,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:01:47,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:01:47,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:01:47,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:01:47,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:01:47,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:01:47,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:01:47,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:01:47,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:01:47,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:01:47,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:01:47,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:01:47,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:01:47,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:01:47,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:01:47,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:01:47,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:01:47,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:01:47,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:01:47,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:01:47,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:01:47,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:01:47,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:01:47,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:01:47,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:01:47,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:01:47,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:01:47,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:01:47,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:01:47,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:01:47,105 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 01:01:47,119 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:01:47,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:01:47,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:01:47,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:01:47,121 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:01:47,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:01:47,121 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:01:47,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:01:47,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:01:47,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:01:47,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:01:47,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:01:47,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:01:47,122 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:01:47,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:01:47,123 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:01:47,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:01:47,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:01:47,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:01:47,124 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:01:47,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:01:47,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:01:47,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:01:47,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:01:47,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:01:47,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:01:47,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:01:47,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:01:47,126 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:01:47,400 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:01:47,416 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:01:47,420 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:01:47,422 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:01:47,422 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:01:47,423 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_unlock_at_exit.i [2019-10-15 01:01:47,489 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36b2eafcc/f07d11654adc4a03a6ba6bee8f8527d9/FLAGc439af21e [2019-10-15 01:01:47,983 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:01:47,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unlock_at_exit.i [2019-10-15 01:01:47,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36b2eafcc/f07d11654adc4a03a6ba6bee8f8527d9/FLAGc439af21e [2019-10-15 01:01:48,317 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36b2eafcc/f07d11654adc4a03a6ba6bee8f8527d9 [2019-10-15 01:01:48,327 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:01:48,329 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:01:48,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:01:48,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:01:48,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:01:48,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:01:48" (1/1) ... [2019-10-15 01:01:48,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30593915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:48, skipping insertion in model container [2019-10-15 01:01:48,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:01:48" (1/1) ... [2019-10-15 01:01:48,347 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:01:48,412 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:01:48,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:01:48,934 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:01:49,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:01:49,119 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:01:49,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:49 WrapperNode [2019-10-15 01:01:49,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:01:49,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:01:49,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:01:49,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:01:49,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:49" (1/1) ... [2019-10-15 01:01:49,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:49" (1/1) ... [2019-10-15 01:01:49,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:49" (1/1) ... [2019-10-15 01:01:49,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:49" (1/1) ... [2019-10-15 01:01:49,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:49" (1/1) ... [2019-10-15 01:01:49,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:49" (1/1) ... [2019-10-15 01:01:49,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:49" (1/1) ... [2019-10-15 01:01:49,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:01:49,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:01:49,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:01:49,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:01:49,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:49" (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 01:01:49,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:01:49,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:01:49,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 01:01:49,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 01:01:49,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-15 01:01:49,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2019-10-15 01:01:49,261 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-10-15 01:01:49,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-10-15 01:01:49,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-10-15 01:01:49,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-10-15 01:01:49,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-10-15 01:01:49,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-10-15 01:01:49,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2019-10-15 01:01:49,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2019-10-15 01:01:49,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-15 01:01:49,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2019-10-15 01:01:49,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2019-10-15 01:01:49,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2019-10-15 01:01:49,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-15 01:01:49,264 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-10-15 01:01:49,264 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-15 01:01:49,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-15 01:01:49,264 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-10-15 01:01:49,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:01:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 01:01:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 01:01:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 01:01:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 01:01:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 01:01:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 01:01:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 01:01:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 01:01:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 01:01:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 01:01:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 01:01:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 01:01:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 01:01:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 01:01:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 01:01:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 01:01:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 01:01:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 01:01:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 01:01:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 01:01:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 01:01:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 01:01:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 01:01:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 01:01:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 01:01:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 01:01:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 01:01:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 01:01:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 01:01:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 01:01:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 01:01:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 01:01:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 01:01:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 01:01:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 01:01:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 01:01:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 01:01:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 01:01:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 01:01:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 01:01:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 01:01:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 01:01:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 01:01:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 01:01:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 01:01:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 01:01:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 01:01:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 01:01:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 01:01:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 01:01:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 01:01:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 01:01:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:01:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 01:01:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 01:01:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:01:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 01:01:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 01:01:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 01:01:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 01:01:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 01:01:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 01:01:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 01:01:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:01:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 01:01:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 01:01:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 01:01:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 01:01:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 01:01:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 01:01:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 01:01:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 01:01:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 01:01:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 01:01:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 01:01:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 01:01:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 01:01:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 01:01:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 01:01:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 01:01:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 01:01:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 01:01:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 01:01:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 01:01:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 01:01:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 01:01:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 01:01:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 01:01:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 01:01:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 01:01:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 01:01:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 01:01:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 01:01:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 01:01:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 01:01:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 01:01:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 01:01:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 01:01:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 01:01:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 01:01:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 01:01:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 01:01:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:01:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 01:01:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:01:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 01:01:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-15 01:01:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:01:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2019-10-15 01:01:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-10-15 01:01:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:01:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-10-15 01:01:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-10-15 01:01:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-10-15 01:01:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:01:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-10-15 01:01:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-10-15 01:01:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2019-10-15 01:01:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2019-10-15 01:01:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-15 01:01:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2019-10-15 01:01:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2019-10-15 01:01:49,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2019-10-15 01:01:49,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:01:49,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-15 01:01:49,283 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-10-15 01:01:49,283 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-15 01:01:49,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-15 01:01:49,283 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-10-15 01:01:49,284 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:01:49,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:01:49,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:01:49,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 01:01:49,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:01:50,019 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:01:50,020 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-15 01:01:50,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:01:50 BoogieIcfgContainer [2019-10-15 01:01:50,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:01:50,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:01:50,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:01:50,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:01:50,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:01:48" (1/3) ... [2019-10-15 01:01:50,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d60cac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:01:50, skipping insertion in model container [2019-10-15 01:01:50,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:49" (2/3) ... [2019-10-15 01:01:50,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d60cac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:01:50, skipping insertion in model container [2019-10-15 01:01:50,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:01:50" (3/3) ... [2019-10-15 01:01:50,034 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_unlock_at_exit.i [2019-10-15 01:01:50,045 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:01:50,053 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-15 01:01:50,066 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-15 01:01:50,097 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:01:50,097 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:01:50,098 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:01:50,098 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:01:50,098 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:01:50,098 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:01:50,099 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:01:50,099 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:01:50,124 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2019-10-15 01:01:50,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-15 01:01:50,131 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:01:50,132 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:01:50,135 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:01:50,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:01:50,141 INFO L82 PathProgramCache]: Analyzing trace with hash 677281707, now seen corresponding path program 1 times [2019-10-15 01:01:50,149 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:01:50,149 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066453379] [2019-10-15 01:01:50,150 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:50,150 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:50,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:01:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:01:50,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:01:50,396 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066453379] [2019-10-15 01:01:50,398 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:01:50,398 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:01:50,399 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368469638] [2019-10-15 01:01:50,432 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:01:50,434 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:01:50,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:01:50,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:01:50,452 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 2 states. [2019-10-15 01:01:50,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:01:50,492 INFO L93 Difference]: Finished difference Result 186 states and 220 transitions. [2019-10-15 01:01:50,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:01:50,493 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2019-10-15 01:01:50,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:01:50,505 INFO L225 Difference]: With dead ends: 186 [2019-10-15 01:01:50,505 INFO L226 Difference]: Without dead ends: 91 [2019-10-15 01:01:50,510 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:01:50,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-10-15 01:01:50,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2019-10-15 01:01:50,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-10-15 01:01:50,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2019-10-15 01:01:50,560 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 30 [2019-10-15 01:01:50,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:01:50,562 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2019-10-15 01:01:50,563 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:01:50,563 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2019-10-15 01:01:50,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-15 01:01:50,565 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:01:50,565 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:01:50,565 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:01:50,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:01:50,566 INFO L82 PathProgramCache]: Analyzing trace with hash 392179489, now seen corresponding path program 1 times [2019-10-15 01:01:50,566 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:01:50,566 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238354582] [2019-10-15 01:01:50,566 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:50,567 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:50,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:01:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:01:50,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:01:50,701 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238354582] [2019-10-15 01:01:50,701 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:01:50,701 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:01:50,701 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686480557] [2019-10-15 01:01:50,703 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:01:50,703 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:01:50,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:01:50,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:01:50,704 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 4 states. [2019-10-15 01:01:50,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:01:50,734 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2019-10-15 01:01:50,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:01:50,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-10-15 01:01:50,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:01:50,739 INFO L225 Difference]: With dead ends: 97 [2019-10-15 01:01:50,739 INFO L226 Difference]: Without dead ends: 95 [2019-10-15 01:01:50,740 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 01:01:50,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-10-15 01:01:50,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2019-10-15 01:01:50,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-10-15 01:01:50,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 106 transitions. [2019-10-15 01:01:50,756 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 106 transitions. Word has length 30 [2019-10-15 01:01:50,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:01:50,757 INFO L462 AbstractCegarLoop]: Abstraction has 95 states and 106 transitions. [2019-10-15 01:01:50,757 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:01:50,757 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 106 transitions. [2019-10-15 01:01:50,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-15 01:01:50,758 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:01:50,758 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:01:50,759 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:01:50,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:01:50,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1966782794, now seen corresponding path program 1 times [2019-10-15 01:01:50,759 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:01:50,760 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540816219] [2019-10-15 01:01:50,760 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:50,760 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:50,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:01:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:01:50,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:01:50,968 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540816219] [2019-10-15 01:01:50,968 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:01:50,968 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:01:50,969 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021088828] [2019-10-15 01:01:50,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:01:50,970 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:01:50,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:01:50,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:01:50,970 INFO L87 Difference]: Start difference. First operand 95 states and 106 transitions. Second operand 5 states. [2019-10-15 01:01:51,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:01:51,495 INFO L93 Difference]: Finished difference Result 254 states and 303 transitions. [2019-10-15 01:01:51,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:01:51,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-10-15 01:01:51,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:01:51,500 INFO L225 Difference]: With dead ends: 254 [2019-10-15 01:01:51,500 INFO L226 Difference]: Without dead ends: 173 [2019-10-15 01:01:51,502 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:01:51,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-10-15 01:01:51,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 138. [2019-10-15 01:01:51,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-10-15 01:01:51,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 163 transitions. [2019-10-15 01:01:51,529 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 163 transitions. Word has length 30 [2019-10-15 01:01:51,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:01:51,530 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 163 transitions. [2019-10-15 01:01:51,530 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:01:51,530 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 163 transitions. [2019-10-15 01:01:51,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-15 01:01:51,533 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:01:51,533 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:01:51,534 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:01:51,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:01:51,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1243409077, now seen corresponding path program 1 times [2019-10-15 01:01:51,534 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:01:51,534 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651232035] [2019-10-15 01:01:51,535 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:51,535 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:51,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:01:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:01:51,644 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-15 01:01:51,644 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651232035] [2019-10-15 01:01:51,645 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852040244] [2019-10-15 01:01:51,645 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 01:01:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:01:51,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 01:01:51,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:01:51,922 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 01:01:51,922 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:01:52,082 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-15 01:01:52,083 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:01:52,083 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 4 [2019-10-15 01:01:52,084 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402496342] [2019-10-15 01:01:52,085 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:01:52,085 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:01:52,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:01:52,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:01:52,086 INFO L87 Difference]: Start difference. First operand 138 states and 163 transitions. Second operand 4 states. [2019-10-15 01:01:52,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:01:52,115 INFO L93 Difference]: Finished difference Result 250 states and 296 transitions. [2019-10-15 01:01:52,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:01:52,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2019-10-15 01:01:52,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:01:52,123 INFO L225 Difference]: With dead ends: 250 [2019-10-15 01:01:52,124 INFO L226 Difference]: Without dead ends: 144 [2019-10-15 01:01:52,127 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 157 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 01:01:52,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-10-15 01:01:52,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2019-10-15 01:01:52,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-10-15 01:01:52,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2019-10-15 01:01:52,176 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 78 [2019-10-15 01:01:52,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:01:52,177 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2019-10-15 01:01:52,177 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:01:52,177 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2019-10-15 01:01:52,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-15 01:01:52,184 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:01:52,185 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:01:52,399 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:01:52,399 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:01:52,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:01:52,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1517471517, now seen corresponding path program 1 times [2019-10-15 01:01:52,400 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:01:52,400 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892705823] [2019-10-15 01:01:52,400 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:52,401 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:52,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:01:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:01:52,791 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 11 proven. 25 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 01:01:52,792 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892705823] [2019-10-15 01:01:52,792 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648217370] [2019-10-15 01:01:52,792 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 01:01:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:01:52,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 55 conjunts are in the unsatisfiable core [2019-10-15 01:01:52,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:01:53,064 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 01:01:53,065 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:01:53,073 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:01:53,077 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 01:01:53,078 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:01:53,084 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:01:53,084 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:01:53,085 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2019-10-15 01:01:53,146 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 01:01:53,147 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:01:53,154 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:01:53,158 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 01:01:53,159 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:01:53,164 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:01:53,165 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:01:53,165 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2019-10-15 01:01:53,385 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 01:01:53,385 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:01:53,847 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:01:53,858 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 01:01:53,859 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:01:53,871 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:01:53,875 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 01:01:53,876 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:01:53,923 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:01:53,923 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:01:53,923 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:25 [2019-10-15 01:01:54,083 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:01:54,095 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 01:01:54,095 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:01:54,101 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:01:54,104 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 01:01:54,105 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:01:54,114 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:01:54,115 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:01:54,116 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-10-15 01:01:54,204 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:01:54,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:01:54,303 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 01:01:54,304 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:01:54,309 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 01:01:54,310 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:01:54,330 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:01:54,336 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 01:01:54,336 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-15 01:01:54,341 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 01:01:54,342 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-10-15 01:01:54,360 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:01:54,360 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-15 01:01:54,361 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:81, output treesize:49 [2019-10-15 01:01:54,399 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:01:54,408 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:01:54,467 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:01:54,468 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:01:54,468 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14, 10] total 28 [2019-10-15 01:01:54,468 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227952897] [2019-10-15 01:01:54,469 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:01:54,469 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:01:54,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:01:54,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:01:54,470 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 10 states. [2019-10-15 01:01:55,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:01:55,962 INFO L93 Difference]: Finished difference Result 323 states and 381 transitions. [2019-10-15 01:01:55,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-15 01:01:55,963 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2019-10-15 01:01:55,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:01:55,967 INFO L225 Difference]: With dead ends: 323 [2019-10-15 01:01:55,967 INFO L226 Difference]: Without dead ends: 205 [2019-10-15 01:01:55,969 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=365, Invalid=1357, Unknown=0, NotChecked=0, Total=1722 [2019-10-15 01:01:55,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2019-10-15 01:01:55,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 148. [2019-10-15 01:01:55,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-10-15 01:01:55,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 171 transitions. [2019-10-15 01:01:55,991 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 171 transitions. Word has length 78 [2019-10-15 01:01:55,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:01:55,991 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 171 transitions. [2019-10-15 01:01:55,991 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:01:55,991 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 171 transitions. [2019-10-15 01:01:55,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-15 01:01:55,993 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:01:55,993 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:01:56,197 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:01:56,198 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:01:56,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:01:56,199 INFO L82 PathProgramCache]: Analyzing trace with hash 9521619, now seen corresponding path program 1 times [2019-10-15 01:01:56,199 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:01:56,199 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25340714] [2019-10-15 01:01:56,200 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:56,200 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:56,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:01:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:01:57,105 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2019-10-15 01:01:57,907 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:01:57,908 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25340714] [2019-10-15 01:01:57,908 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066171948] [2019-10-15 01:01:57,908 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 01:01:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:01:58,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 132 conjunts are in the unsatisfiable core [2019-10-15 01:01:58,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:01:58,167 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 01:01:58,167 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:01:58,174 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:01:58,174 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:01:58,175 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:19 [2019-10-15 01:01:58,473 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:01:58,474 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 01:01:58,475 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:01:58,482 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:01:58,482 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:01:58,482 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:18 [2019-10-15 01:01:58,623 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 01:01:58,624 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:01:58,628 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:01:58,629 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:01:58,629 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:10 [2019-10-15 01:01:59,173 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:01:59,330 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2019-10-15 01:01:59,331 INFO L341 Elim1Store]: treesize reduction 100, result has 50.2 percent of original size [2019-10-15 01:01:59,331 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 01:01:59,333 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:01:59,508 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-10-15 01:01:59,508 INFO L567 ElimStorePlain]: treesize reduction 36, result has 81.2 percent of original size [2019-10-15 01:01:59,509 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:01:59,509 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:01:59,511 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 01:01:59,512 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:161, output treesize:155 [2019-10-15 01:01:59,512 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:01:59,512 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:01:59,737 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:01:59,737 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:02:00,562 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:02:00,563 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:02:02,915 WARN L191 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2019-10-15 01:02:02,925 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-10-15 01:02:25,968 WARN L191 SmtUtils]: Spent 12.56 s on a formula simplification that was a NOOP. DAG size: 155