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_mostprecise.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test22_2_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:47:03,497 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:47:03,499 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:47:03,515 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:47:03,516 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:47:03,517 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:47:03,518 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:47:03,520 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:47:03,522 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:47:03,523 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:47:03,524 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:47:03,524 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:47:03,524 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:47:03,525 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:47:03,526 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:47:03,529 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:47:03,532 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:47:03,534 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:47:03,535 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:47:03,536 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:47:03,539 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 20:47:03,539 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 20:47:03,539 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 20:47:03,540 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 20:47:03,541 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 20:47:03,542 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 20:47:03,543 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 20:47:03,543 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 20:47:03,544 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 20:47:03,544 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:47:03,544 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:47:03,545 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_mostprecise.epf [2018-01-24 20:47:03,555 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:47:03,555 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:47:03,556 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:47:03,556 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:47:03,557 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:47:03,557 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:47:03,557 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:47:03,557 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:47:03,557 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:47:03,558 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:47:03,558 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:47:03,558 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:47:03,559 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:47:03,559 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:47:03,559 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:47:03,559 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:47:03,559 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:47:03,560 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:47:03,560 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:47:03,560 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:47:03,560 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:47:03,560 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:47:03,561 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:47:03,561 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:47:03,561 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:47:03,561 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:47:03,561 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:47:03,562 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:47:03,562 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:47:03,562 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:47:03,562 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:47:03,562 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:47:03,562 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:47:03,563 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:47:03,563 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:47:03,564 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:47:03,564 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:47:03,599 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:47:03,612 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:47:03,616 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:47:03,618 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:47:03,618 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:47:03,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test22_2_true-valid-memsafety_true-termination.i [2018-01-24 20:47:03,822 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:47:03,826 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:47:03,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:47:03,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:47:03,834 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:47:03,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:47:03" (1/1) ... [2018-01-24 20:47:03,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388a8c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:47:03, skipping insertion in model container [2018-01-24 20:47:03,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:47:03" (1/1) ... [2018-01-24 20:47:03,850 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:47:03,900 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:47:04,026 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:47:04,051 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:47:04,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:47:04 WrapperNode [2018-01-24 20:47:04,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:47:04,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:47:04,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:47:04,062 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:47:04,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:47:04" (1/1) ... [2018-01-24 20:47:04,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:47:04" (1/1) ... [2018-01-24 20:47:04,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:47:04" (1/1) ... [2018-01-24 20:47:04,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:47:04" (1/1) ... [2018-01-24 20:47:04,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:47:04" (1/1) ... [2018-01-24 20:47:04,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:47:04" (1/1) ... [2018-01-24 20:47:04,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:47:04" (1/1) ... [2018-01-24 20:47:04,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:47:04,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:47:04,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:47:04,108 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:47:04,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:47:04" (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 [2018-01-24 20:47:04,155 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:47:04,156 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:47:04,156 INFO L136 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2018-01-24 20:47:04,156 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-24 20:47:04,156 INFO L136 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2018-01-24 20:47:04,156 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2018-01-24 20:47:04,156 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2018-01-24 20:47:04,157 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2018-01-24 20:47:04,157 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2018-01-24 20:47:04,157 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2018-01-24 20:47:04,157 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2018-01-24 20:47:04,157 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2018-01-24 20:47:04,157 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2018-01-24 20:47:04,157 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2018-01-24 20:47:04,158 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2018-01-24 20:47:04,158 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2018-01-24 20:47:04,158 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2018-01-24 20:47:04,158 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2018-01-24 20:47:04,158 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-24 20:47:04,158 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:47:04,159 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 20:47:04,159 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 20:47:04,159 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 20:47:04,159 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 20:47:04,159 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:47:04,160 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:47:04,160 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:47:04,160 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-24 20:47:04,160 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-24 20:47:04,160 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:47:04,160 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 20:47:04,161 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:47:04,161 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-24 20:47:04,161 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-24 20:47:04,161 INFO L128 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2018-01-24 20:47:04,161 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2018-01-24 20:47:04,161 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2018-01-24 20:47:04,162 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2018-01-24 20:47:04,162 INFO L128 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2018-01-24 20:47:04,162 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2018-01-24 20:47:04,162 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2018-01-24 20:47:04,162 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2018-01-24 20:47:04,162 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2018-01-24 20:47:04,162 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2018-01-24 20:47:04,162 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2018-01-24 20:47:04,163 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2018-01-24 20:47:04,163 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2018-01-24 20:47:04,163 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2018-01-24 20:47:04,163 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2018-01-24 20:47:04,163 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-24 20:47:04,163 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:47:04,163 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:47:04,163 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:47:04,421 WARN L455 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-01-24 20:47:04,614 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:47:04,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:47:04 BoogieIcfgContainer [2018-01-24 20:47:04,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:47:04,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:47:04,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:47:04,618 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:47:04,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:47:03" (1/3) ... [2018-01-24 20:47:04,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b80a28d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:47:04, skipping insertion in model container [2018-01-24 20:47:04,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:47:04" (2/3) ... [2018-01-24 20:47:04,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b80a28d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:47:04, skipping insertion in model container [2018-01-24 20:47:04,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:47:04" (3/3) ... [2018-01-24 20:47:04,621 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test22_2_true-valid-memsafety_true-termination.i [2018-01-24 20:47:04,627 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:47:04,634 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2018-01-24 20:47:04,676 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:47:04,676 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:47:04,676 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:47:04,676 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:47:04,676 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:47:04,676 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:47:04,676 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:47:04,676 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:47:04,677 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:47:04,697 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states. [2018-01-24 20:47:04,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 20:47:04,703 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:47:04,704 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:47:04,704 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]=== [2018-01-24 20:47:04,708 INFO L82 PathProgramCache]: Analyzing trace with hash -998986606, now seen corresponding path program 1 times [2018-01-24 20:47:04,710 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:47:04,756 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:47:04,757 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:47:04,757 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:47:04,757 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:47:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:47:04,849 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:47:05,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:47:05,047 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:47:05,047 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:47:05,048 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:47:05,051 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:47:05,066 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:47:05,067 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:47:05,069 INFO L87 Difference]: Start difference. First operand 143 states. Second operand 5 states. [2018-01-24 20:47:05,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:47:05,128 INFO L93 Difference]: Finished difference Result 274 states and 291 transitions. [2018-01-24 20:47:05,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:47:05,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-24 20:47:05,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:47:05,140 INFO L225 Difference]: With dead ends: 274 [2018-01-24 20:47:05,140 INFO L226 Difference]: Without dead ends: 146 [2018-01-24 20:47:05,144 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:47:05,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-24 20:47:05,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2018-01-24 20:47:05,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-01-24 20:47:05,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 153 transitions. [2018-01-24 20:47:05,186 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 153 transitions. Word has length 17 [2018-01-24 20:47:05,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:47:05,186 INFO L432 AbstractCegarLoop]: Abstraction has 144 states and 153 transitions. [2018-01-24 20:47:05,186 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:47:05,186 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 153 transitions. [2018-01-24 20:47:05,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-24 20:47:05,187 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:47:05,187 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:47:05,187 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]=== [2018-01-24 20:47:05,187 INFO L82 PathProgramCache]: Analyzing trace with hash -2077747980, now seen corresponding path program 1 times [2018-01-24 20:47:05,188 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:47:05,189 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:47:05,189 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:47:05,189 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:47:05,189 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:47:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:47:05,212 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:47:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:47:05,283 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:47:05,283 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:47:05,283 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:47:05,285 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 20:47:05,285 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 20:47:05,285 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:47:05,285 INFO L87 Difference]: Start difference. First operand 144 states and 153 transitions. Second operand 6 states. [2018-01-24 20:47:05,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:47:05,497 INFO L93 Difference]: Finished difference Result 146 states and 155 transitions. [2018-01-24 20:47:05,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:47:05,497 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-01-24 20:47:05,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:47:05,499 INFO L225 Difference]: With dead ends: 146 [2018-01-24 20:47:05,500 INFO L226 Difference]: Without dead ends: 145 [2018-01-24 20:47:05,501 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 [2018-01-24 20:47:05,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-01-24 20:47:05,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2018-01-24 20:47:05,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-01-24 20:47:05,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 152 transitions. [2018-01-24 20:47:05,517 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 152 transitions. Word has length 19 [2018-01-24 20:47:05,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:47:05,517 INFO L432 AbstractCegarLoop]: Abstraction has 143 states and 152 transitions. [2018-01-24 20:47:05,517 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 20:47:05,518 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 152 transitions. [2018-01-24 20:47:05,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-24 20:47:05,518 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:47:05,519 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:47:05,519 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]=== [2018-01-24 20:47:05,519 INFO L82 PathProgramCache]: Analyzing trace with hash -2077747979, now seen corresponding path program 1 times [2018-01-24 20:47:05,519 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:47:05,521 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:47:05,521 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:47:05,521 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:47:05,521 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:47:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:47:05,544 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:47:05,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:47:05,765 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:47:05,765 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:47:05,765 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:47:05,765 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 20:47:05,766 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 20:47:05,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:47:05,766 INFO L87 Difference]: Start difference. First operand 143 states and 152 transitions. Second operand 7 states. [2018-01-24 20:47:06,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:47:06,018 INFO L93 Difference]: Finished difference Result 145 states and 154 transitions. [2018-01-24 20:47:06,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 20:47:06,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-01-24 20:47:06,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:47:06,024 INFO L225 Difference]: With dead ends: 145 [2018-01-24 20:47:06,024 INFO L226 Difference]: Without dead ends: 144 [2018-01-24 20:47:06,025 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-01-24 20:47:06,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-01-24 20:47:06,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2018-01-24 20:47:06,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-01-24 20:47:06,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 151 transitions. [2018-01-24 20:47:06,039 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 151 transitions. Word has length 19 [2018-01-24 20:47:06,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:47:06,040 INFO L432 AbstractCegarLoop]: Abstraction has 142 states and 151 transitions. [2018-01-24 20:47:06,040 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 20:47:06,040 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 151 transitions. [2018-01-24 20:47:06,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-24 20:47:06,041 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:47:06,041 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] [2018-01-24 20:47:06,041 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]=== [2018-01-24 20:47:06,041 INFO L82 PathProgramCache]: Analyzing trace with hash -471802203, now seen corresponding path program 1 times [2018-01-24 20:47:06,042 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:47:06,043 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:47:06,043 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:47:06,043 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:47:06,043 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:47:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:47:06,061 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:47:06,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:47:06,153 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:47:06,153 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 20:47:06,153 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:47:06,154 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 20:47:06,154 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 20:47:06,154 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:47:06,154 INFO L87 Difference]: Start difference. First operand 142 states and 151 transitions. Second operand 7 states. [2018-01-24 20:47:06,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:47:06,238 INFO L93 Difference]: Finished difference Result 238 states and 253 transitions. [2018-01-24 20:47:06,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 20:47:06,239 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-01-24 20:47:06,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:47:06,241 INFO L225 Difference]: With dead ends: 238 [2018-01-24 20:47:06,241 INFO L226 Difference]: Without dead ends: 159 [2018-01-24 20:47:06,242 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 [2018-01-24 20:47:06,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-01-24 20:47:06,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 151. [2018-01-24 20:47:06,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-01-24 20:47:06,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 160 transitions. [2018-01-24 20:47:06,261 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 160 transitions. Word has length 27 [2018-01-24 20:47:06,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:47:06,261 INFO L432 AbstractCegarLoop]: Abstraction has 151 states and 160 transitions. [2018-01-24 20:47:06,261 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 20:47:06,261 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 160 transitions. [2018-01-24 20:47:06,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 20:47:06,263 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:47:06,263 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] [2018-01-24 20:47:06,263 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]=== [2018-01-24 20:47:06,264 INFO L82 PathProgramCache]: Analyzing trace with hash 131109242, now seen corresponding path program 1 times [2018-01-24 20:47:06,264 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:47:06,265 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:47:06,266 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:47:06,266 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:47:06,266 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:47:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:47:06,287 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:47:06,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:47:06,434 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:47:06,434 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 20:47:06,438 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:47:06,438 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 20:47:06,439 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 20:47:06,439 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-01-24 20:47:06,439 INFO L87 Difference]: Start difference. First operand 151 states and 160 transitions. Second operand 10 states. [2018-01-24 20:47:06,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:47:06,668 INFO L93 Difference]: Finished difference Result 151 states and 160 transitions. [2018-01-24 20:47:06,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 20:47:06,668 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-01-24 20:47:06,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:47:06,669 INFO L225 Difference]: With dead ends: 151 [2018-01-24 20:47:06,669 INFO L226 Difference]: Without dead ends: 150 [2018-01-24 20:47:06,670 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2018-01-24 20:47:06,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-01-24 20:47:06,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-01-24 20:47:06,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-24 20:47:06,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 159 transitions. [2018-01-24 20:47:06,678 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 159 transitions. Word has length 34 [2018-01-24 20:47:06,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:47:06,679 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 159 transitions. [2018-01-24 20:47:06,679 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 20:47:06,679 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 159 transitions. [2018-01-24 20:47:06,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 20:47:06,680 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:47:06,680 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] [2018-01-24 20:47:06,680 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]=== [2018-01-24 20:47:06,680 INFO L82 PathProgramCache]: Analyzing trace with hash 131109243, now seen corresponding path program 1 times [2018-01-24 20:47:06,680 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:47:06,681 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:47:06,681 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:47:06,682 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:47:06,682 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:47:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:47:06,699 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:47:06,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:47:06,774 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:47:06,774 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:47:06,774 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:47:06,775 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:47:06,775 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:47:06,775 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:47:06,775 INFO L87 Difference]: Start difference. First operand 150 states and 159 transitions. Second operand 4 states. [2018-01-24 20:47:06,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:47:06,806 INFO L93 Difference]: Finished difference Result 266 states and 282 transitions. [2018-01-24 20:47:06,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:47:06,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-01-24 20:47:06,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:47:06,808 INFO L225 Difference]: With dead ends: 266 [2018-01-24 20:47:06,808 INFO L226 Difference]: Without dead ends: 151 [2018-01-24 20:47:06,810 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 [2018-01-24 20:47:06,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-01-24 20:47:06,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-01-24 20:47:06,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-01-24 20:47:06,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 160 transitions. [2018-01-24 20:47:06,821 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 160 transitions. Word has length 34 [2018-01-24 20:47:06,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:47:06,822 INFO L432 AbstractCegarLoop]: Abstraction has 151 states and 160 transitions. [2018-01-24 20:47:06,822 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:47:06,822 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 160 transitions. [2018-01-24 20:47:06,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-24 20:47:06,823 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:47:06,823 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] [2018-01-24 20:47:06,824 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]=== [2018-01-24 20:47:06,824 INFO L82 PathProgramCache]: Analyzing trace with hash -2110897305, now seen corresponding path program 1 times [2018-01-24 20:47:06,824 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:47:06,825 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:47:06,826 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:47:06,826 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:47:06,826 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:47:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:47:06,844 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:47:06,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:47:06,894 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:47:06,894 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 20:47:06,895 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2018-01-24 20:47:06,897 INFO L201 CegarAbsIntRunner]: [0], [2], [6], [10], [31], [36], [52], [60], [64], [68], [71], [73], [74], [78], [80], [81], [131], [134], [135], [136], [138], [139], [140], [158], [159], [160], [161], [162], [164], [170], [174], [182], [196], [197], [198] [2018-01-24 20:47:06,944 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 20:47:06,944 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