java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test22_1_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 03:30:16,819 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 03:30:16,821 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 03:30:16,834 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 03:30:16,835 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 03:30:16,836 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 03:30:16,837 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 03:30:16,839 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 03:30:16,841 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 03:30:16,842 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 03:30:16,843 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 03:30:16,843 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 03:30:16,845 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 03:30:16,846 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 03:30:16,846 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 03:30:16,849 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 03:30:16,851 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 03:30:16,853 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 03:30:16,855 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 03:30:16,856 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 03:30:16,858 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 03:30:16,858 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 03:30:16,859 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 03:30:16,860 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 03:30:16,861 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 03:30:16,862 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 03:30:16,862 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 03:30:16,863 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 03:30:16,863 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 03:30:16,863 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 03:30:16,864 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 03:30:16,864 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf [2018-01-25 03:30:16,875 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 03:30:16,875 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 03:30:16,876 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 03:30:16,876 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 03:30:16,876 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 03:30:16,876 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 03:30:16,877 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-25 03:30:16,877 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 03:30:16,877 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 03:30:16,878 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 03:30:16,878 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 03:30:16,878 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 03:30:16,878 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 03:30:16,879 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 03:30:16,879 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 03:30:16,879 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 03:30:16,879 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 03:30:16,879 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 03:30:16,880 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 03:30:16,880 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 03:30:16,880 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 03:30:16,880 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 03:30:16,880 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 03:30:16,881 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 03:30:16,881 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 03:30:16,881 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:30:16,881 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 03:30:16,882 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 03:30:16,882 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 03:30:16,882 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 03:30:16,882 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 03:30:16,882 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 03:30:16,883 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 03:30:16,883 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 03:30:16,883 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 03:30:16,884 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 03:30:16,884 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 03:30:16,919 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 03:30:16,933 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 03:30:16,936 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 03:30:16,937 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 03:30:16,937 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 03:30:16,938 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test22_1_false-valid-memtrack_true-termination.i [2018-01-25 03:30:17,146 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 03:30:17,152 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 03:30:17,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 03:30:17,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 03:30:17,158 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 03:30:17,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:30:17" (1/1) ... [2018-01-25 03:30:17,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d434187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:30:17, skipping insertion in model container [2018-01-25 03:30:17,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:30:17" (1/1) ... [2018-01-25 03:30:17,182 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:30:17,234 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:30:17,360 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:30:17,382 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:30:17,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:30:17 WrapperNode [2018-01-25 03:30:17,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 03:30:17,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 03:30:17,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 03:30:17,397 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 03:30:17,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:30:17" (1/1) ... [2018-01-25 03:30:17,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:30:17" (1/1) ... [2018-01-25 03:30:17,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:30:17" (1/1) ... [2018-01-25 03:30:17,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:30:17" (1/1) ... [2018-01-25 03:30:17,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:30:17" (1/1) ... [2018-01-25 03:30:17,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:30:17" (1/1) ... [2018-01-25 03:30:17,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:30:17" (1/1) ... [2018-01-25 03:30:17,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 03:30:17,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 03:30:17,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 03:30:17,439 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 03:30:17,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:30:17" (1/1) ... No working directory specified, using /storage/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 [2018-01-25 03:30:17,499 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 03:30:17,499 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 03:30:17,499 INFO L136 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2018-01-25 03:30:17,499 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-25 03:30:17,499 INFO L136 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2018-01-25 03:30:17,500 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2018-01-25 03:30:17,500 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2018-01-25 03:30:17,500 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2018-01-25 03:30:17,500 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2018-01-25 03:30:17,500 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2018-01-25 03:30:17,500 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2018-01-25 03:30:17,501 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2018-01-25 03:30:17,501 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2018-01-25 03:30:17,501 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2018-01-25 03:30:17,501 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2018-01-25 03:30:17,501 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2018-01-25 03:30:17,502 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2018-01-25 03:30:17,502 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2018-01-25 03:30:17,502 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-25 03:30:17,502 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 03:30:17,502 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 03:30:17,502 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 03:30:17,503 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 03:30:17,503 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 03:30:17,503 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 03:30:17,503 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 03:30:17,503 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 03:30:17,503 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-25 03:30:17,504 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-25 03:30:17,504 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 03:30:17,504 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 03:30:17,504 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 03:30:17,504 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-25 03:30:17,504 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-25 03:30:17,504 INFO L128 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2018-01-25 03:30:17,505 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2018-01-25 03:30:17,505 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2018-01-25 03:30:17,505 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2018-01-25 03:30:17,505 INFO L128 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2018-01-25 03:30:17,505 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2018-01-25 03:30:17,505 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2018-01-25 03:30:17,505 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2018-01-25 03:30:17,505 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2018-01-25 03:30:17,506 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2018-01-25 03:30:17,506 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2018-01-25 03:30:17,506 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2018-01-25 03:30:17,506 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2018-01-25 03:30:17,506 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2018-01-25 03:30:17,506 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2018-01-25 03:30:17,506 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-25 03:30:17,507 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 03:30:17,507 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 03:30:17,507 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 03:30:17,873 WARN L455 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-01-25 03:30:18,091 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 03:30:18,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:30:18 BoogieIcfgContainer [2018-01-25 03:30:18,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 03:30:18,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 03:30:18,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 03:30:18,095 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 03:30:18,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 03:30:17" (1/3) ... [2018-01-25 03:30:18,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26eeaef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:30:18, skipping insertion in model container [2018-01-25 03:30:18,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:30:17" (2/3) ... [2018-01-25 03:30:18,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26eeaef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:30:18, skipping insertion in model container [2018-01-25 03:30:18,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:30:18" (3/3) ... [2018-01-25 03:30:18,099 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test22_1_false-valid-memtrack_true-termination.i [2018-01-25 03:30:18,105 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 03:30:18,113 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2018-01-25 03:30:18,152 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 03:30:18,153 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 03:30:18,153 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 03:30:18,153 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 03:30:18,153 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 03:30:18,153 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 03:30:18,153 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 03:30:18,153 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 03:30:18,154 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 03:30:18,173 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states. [2018-01-25 03:30:18,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-25 03:30:18,178 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:30:18,179 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:30:18,179 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 03:30:18,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1956546830, now seen corresponding path program 1 times [2018-01-25 03:30:18,185 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:30:18,232 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:30:18,232 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:30:18,232 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:30:18,232 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:30:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:30:18,287 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:30:18,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:30:18,510 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:30:18,511 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:30:18,511 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:30:18,514 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:30:18,524 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:30:18,525 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:30:18,526 INFO L87 Difference]: Start difference. First operand 142 states. Second operand 5 states. [2018-01-25 03:30:18,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:30:18,594 INFO L93 Difference]: Finished difference Result 272 states and 287 transitions. [2018-01-25 03:30:18,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:30:18,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-25 03:30:18,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:30:18,609 INFO L225 Difference]: With dead ends: 272 [2018-01-25 03:30:18,609 INFO L226 Difference]: Without dead ends: 145 [2018-01-25 03:30:18,613 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:30:18,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-01-25 03:30:18,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2018-01-25 03:30:18,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-01-25 03:30:18,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 151 transitions. [2018-01-25 03:30:18,652 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 151 transitions. Word has length 17 [2018-01-25 03:30:18,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:30:18,652 INFO L432 AbstractCegarLoop]: Abstraction has 143 states and 151 transitions. [2018-01-25 03:30:18,652 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:30:18,652 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 151 transitions. [2018-01-25 03:30:18,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-25 03:30:18,653 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:30:18,653 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:30:18,653 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 03:30:18,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1123892084, now seen corresponding path program 1 times [2018-01-25 03:30:18,654 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:30:18,655 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:30:18,655 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:30:18,655 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:30:18,655 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:30:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:30:18,679 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:30:18,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:30:18,749 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:30:18,749 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:30:18,749 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:30:18,750 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 03:30:18,751 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 03:30:18,751 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:30:18,751 INFO L87 Difference]: Start difference. First operand 143 states and 151 transitions. Second operand 6 states. [2018-01-25 03:30:18,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:30:18,950 INFO L93 Difference]: Finished difference Result 145 states and 153 transitions. [2018-01-25 03:30:18,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:30:18,951 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-01-25 03:30:18,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:30:18,953 INFO L225 Difference]: With dead ends: 145 [2018-01-25 03:30:18,953 INFO L226 Difference]: Without dead ends: 144 [2018-01-25 03:30:18,954 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:30:18,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-01-25 03:30:18,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2018-01-25 03:30:18,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-01-25 03:30:18,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 150 transitions. [2018-01-25 03:30:18,968 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 150 transitions. Word has length 19 [2018-01-25 03:30:18,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:30:18,968 INFO L432 AbstractCegarLoop]: Abstraction has 142 states and 150 transitions. [2018-01-25 03:30:18,968 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 03:30:18,968 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 150 transitions. [2018-01-25 03:30:18,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-25 03:30:18,969 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:30:18,969 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:30:18,969 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 03:30:18,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1123892085, now seen corresponding path program 1 times [2018-01-25 03:30:18,969 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:30:18,970 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:30:18,971 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:30:18,971 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:30:18,971 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:30:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:30:18,995 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:30:19,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:30:19,348 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:30:19,348 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 03:30:19,348 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:30:19,348 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 03:30:19,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 03:30:19,349 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:30:19,349 INFO L87 Difference]: Start difference. First operand 142 states and 150 transitions. Second operand 7 states. [2018-01-25 03:30:19,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:30:19,593 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2018-01-25 03:30:19,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 03:30:19,594 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-01-25 03:30:19,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:30:19,596 INFO L225 Difference]: With dead ends: 144 [2018-01-25 03:30:19,596 INFO L226 Difference]: Without dead ends: 143 [2018-01-25 03:30:19,597 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-01-25 03:30:19,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-01-25 03:30:19,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2018-01-25 03:30:19,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-01-25 03:30:19,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 149 transitions. [2018-01-25 03:30:19,613 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 149 transitions. Word has length 19 [2018-01-25 03:30:19,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:30:19,614 INFO L432 AbstractCegarLoop]: Abstraction has 141 states and 149 transitions. [2018-01-25 03:30:19,614 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 03:30:19,614 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 149 transitions. [2018-01-25 03:30:19,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-25 03:30:19,615 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:30:19,615 INFO L322 BasicCegarLoop]: trace histogram [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] [2018-01-25 03:30:19,615 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 03:30:19,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1414777661, now seen corresponding path program 1 times [2018-01-25 03:30:19,616 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:30:19,617 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:30:19,618 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:30:19,618 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:30:19,618 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:30:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:30:19,639 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:30:19,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:30:19,711 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:30:19,711 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-25 03:30:19,712 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:30:19,712 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 03:30:19,713 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 03:30:19,713 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:30:19,713 INFO L87 Difference]: Start difference. First operand 141 states and 149 transitions. Second operand 7 states. [2018-01-25 03:30:19,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:30:19,787 INFO L93 Difference]: Finished difference Result 235 states and 247 transitions. [2018-01-25 03:30:19,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 03:30:19,787 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-01-25 03:30:19,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:30:19,790 INFO L225 Difference]: With dead ends: 235 [2018-01-25 03:30:19,790 INFO L226 Difference]: Without dead ends: 157 [2018-01-25 03:30:19,791 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:30:19,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-01-25 03:30:19,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 150. [2018-01-25 03:30:19,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-25 03:30:19,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 158 transitions. [2018-01-25 03:30:19,812 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 158 transitions. Word has length 27 [2018-01-25 03:30:19,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:30:19,812 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 158 transitions. [2018-01-25 03:30:19,812 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 03:30:19,812 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 158 transitions. [2018-01-25 03:30:19,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 03:30:19,814 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:30:19,814 INFO L322 BasicCegarLoop]: trace histogram [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] [2018-01-25 03:30:19,814 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 03:30:19,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1439517623, now seen corresponding path program 1 times [2018-01-25 03:30:19,815 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:30:19,816 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:30:19,816 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:30:19,816 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:30:19,816 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:30:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:30:19,839 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:30:19,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:30:19,957 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:30:19,957 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-25 03:30:19,957 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:30:19,958 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 03:30:19,958 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 03:30:19,958 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-01-25 03:30:19,958 INFO L87 Difference]: Start difference. First operand 150 states and 158 transitions. Second operand 10 states. [2018-01-25 03:30:20,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:30:20,185 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2018-01-25 03:30:20,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-25 03:30:20,185 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-01-25 03:30:20,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:30:20,187 INFO L225 Difference]: With dead ends: 150 [2018-01-25 03:30:20,187 INFO L226 Difference]: Without dead ends: 149 [2018-01-25 03:30:20,187 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2018-01-25 03:30:20,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-01-25 03:30:20,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-01-25 03:30:20,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-01-25 03:30:20,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 157 transitions. [2018-01-25 03:30:20,200 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 157 transitions. Word has length 34 [2018-01-25 03:30:20,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:30:20,200 INFO L432 AbstractCegarLoop]: Abstraction has 149 states and 157 transitions. [2018-01-25 03:30:20,200 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 03:30:20,200 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 157 transitions. [2018-01-25 03:30:20,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 03:30:20,202 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:30:20,202 INFO L322 BasicCegarLoop]: trace histogram [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] [2018-01-25 03:30:20,202 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 03:30:20,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1439517624, now seen corresponding path program 1 times [2018-01-25 03:30:20,202 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:30:20,203 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:30:20,204 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:30:20,204 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:30:20,204 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:30:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:30:20,220 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:30:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:30:20,249 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:30:20,249 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:30:20,249 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:30:20,250 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:30:20,250 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:30:20,250 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:30:20,250 INFO L87 Difference]: Start difference. First operand 149 states and 157 transitions. Second operand 4 states. [2018-01-25 03:30:20,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:30:20,273 INFO L93 Difference]: Finished difference Result 264 states and 278 transitions. [2018-01-25 03:30:20,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:30:20,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-01-25 03:30:20,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:30:20,275 INFO L225 Difference]: With dead ends: 264 [2018-01-25 03:30:20,275 INFO L226 Difference]: Without dead ends: 150 [2018-01-25 03:30:20,276 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:30:20,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-01-25 03:30:20,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-01-25 03:30:20,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-25 03:30:20,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 158 transitions. [2018-01-25 03:30:20,288 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 158 transitions. Word has length 34 [2018-01-25 03:30:20,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:30:20,288 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 158 transitions. [2018-01-25 03:30:20,288 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:30:20,288 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 158 transitions. [2018-01-25 03:30:20,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-25 03:30:20,290 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:30:20,290 INFO L322 BasicCegarLoop]: trace histogram [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] [2018-01-25 03:30:20,290 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 03:30:20,290 INFO L82 PathProgramCache]: Analyzing trace with hash -204456797, now seen corresponding path program 1 times [2018-01-25 03:30:20,290 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:30:20,292 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:30:20,292 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:30:20,292 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:30:20,292 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:30:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:30:20,309 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:30:20,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:30:20,379 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:30:20,379 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 03:30:20,380 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2018-01-25 03:30:20,381 INFO L201 CegarAbsIntRunner]: [0], [2], [6], [10], [31], [36], [52], [59], [63], [67], [70], [72], [73], [77], [79], [80], [130], [133], [134], [135], [137], [138], [139], [157], [158], [159], [160], [161], [163], [169], [173], [179], [193], [194], [195] [2018-01-25 03:30:20,434 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 03:30:20,434 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown