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_5_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 03:24:21,749 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 03:24:21,751 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 03:24:21,766 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 03:24:21,767 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 03:24:21,768 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 03:24:21,769 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 03:24:21,771 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 03:24:21,773 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 03:24:21,774 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 03:24:21,775 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 03:24:21,775 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 03:24:21,777 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 03:24:21,778 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 03:24:21,779 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 03:24:21,782 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 03:24:21,784 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 03:24:21,786 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 03:24:21,787 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 03:24:21,788 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 03:24:21,791 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 03:24:21,791 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 03:24:21,791 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 03:24:21,792 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 03:24:21,793 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 03:24:21,794 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 03:24:21,795 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 03:24:21,795 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 03:24:21,796 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 03:24:21,796 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 03:24:21,796 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 03:24:21,797 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 03:24:21,807 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 03:24:21,807 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 03:24:21,808 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 03:24:21,808 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 03:24:21,808 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 03:24:21,808 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 03:24:21,809 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-25 03:24:21,809 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 03:24:21,809 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 03:24:21,810 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 03:24:21,810 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 03:24:21,810 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 03:24:21,810 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 03:24:21,810 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 03:24:21,810 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 03:24:21,811 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 03:24:21,811 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 03:24:21,811 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 03:24:21,811 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 03:24:21,811 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 03:24:21,812 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 03:24:21,812 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 03:24:21,812 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 03:24:21,812 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 03:24:21,812 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 03:24:21,812 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:24:21,813 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 03:24:21,813 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 03:24:21,813 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 03:24:21,813 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 03:24:21,813 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 03:24:21,814 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 03:24:21,814 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 03:24:21,814 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 03:24:21,814 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 03:24:21,815 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 03:24:21,815 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 03:24:21,863 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 03:24:21,880 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 03:24:21,888 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 03:24:21,889 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 03:24:21,890 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 03:24:21,891 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test22_5_false-valid-deref.i [2018-01-25 03:24:22,190 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 03:24:22,196 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 03:24:22,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 03:24:22,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 03:24:22,204 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 03:24:22,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:24:22" (1/1) ... [2018-01-25 03:24:22,208 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 25.01 03:24:22, skipping insertion in model container [2018-01-25 03:24:22,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:24:22" (1/1) ... [2018-01-25 03:24:22,223 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:24:22,283 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:24:22,424 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:24:22,449 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:24:22,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:24:22 WrapperNode [2018-01-25 03:24:22,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 03:24:22,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 03:24:22,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 03:24:22,465 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 03:24:22,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:24:22" (1/1) ... [2018-01-25 03:24:22,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:24:22" (1/1) ... [2018-01-25 03:24:22,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:24:22" (1/1) ... [2018-01-25 03:24:22,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:24:22" (1/1) ... [2018-01-25 03:24:22,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:24:22" (1/1) ... [2018-01-25 03:24:22,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:24:22" (1/1) ... [2018-01-25 03:24:22,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:24:22" (1/1) ... [2018-01-25 03:24:22,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 03:24:22,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 03:24:22,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 03:24:22,517 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 03:24:22,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:24:22" (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 03:24:22,570 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 03:24:22,571 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 03:24:22,571 INFO L136 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2018-01-25 03:24:22,571 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-25 03:24:22,571 INFO L136 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2018-01-25 03:24:22,571 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2018-01-25 03:24:22,571 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2018-01-25 03:24:22,572 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2018-01-25 03:24:22,572 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2018-01-25 03:24:22,572 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2018-01-25 03:24:22,572 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2018-01-25 03:24:22,572 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2018-01-25 03:24:22,572 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2018-01-25 03:24:22,573 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2018-01-25 03:24:22,573 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2018-01-25 03:24:22,573 INFO L136 BoogieDeclarations]: Found implementation of procedure f_22_put [2018-01-25 03:24:22,573 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-25 03:24:22,573 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 03:24:22,573 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 03:24:22,574 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 03:24:22,574 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 03:24:22,574 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 03:24:22,574 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 03:24:22,574 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 03:24:22,575 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 03:24:22,575 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-25 03:24:22,575 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-25 03:24:22,575 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 03:24:22,575 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 03:24:22,575 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 03:24:22,576 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-25 03:24:22,576 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-25 03:24:22,576 INFO L128 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2018-01-25 03:24:22,576 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2018-01-25 03:24:22,576 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2018-01-25 03:24:22,576 INFO L128 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2018-01-25 03:24:22,577 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2018-01-25 03:24:22,577 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2018-01-25 03:24:22,577 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2018-01-25 03:24:22,577 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2018-01-25 03:24:22,577 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2018-01-25 03:24:22,577 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2018-01-25 03:24:22,577 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2018-01-25 03:24:22,578 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2018-01-25 03:24:22,578 INFO L128 BoogieDeclarations]: Found specification of procedure f_22_put [2018-01-25 03:24:22,578 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-25 03:24:22,578 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 03:24:22,578 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 03:24:22,578 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 03:24:22,979 WARN L455 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-01-25 03:24:23,174 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 03:24:23,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:24:23 BoogieIcfgContainer [2018-01-25 03:24:23,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 03:24:23,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 03:24:23,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 03:24:23,178 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 03:24:23,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 03:24:22" (1/3) ... [2018-01-25 03:24:23,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ac95cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:24:23, skipping insertion in model container [2018-01-25 03:24:23,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:24:22" (2/3) ... [2018-01-25 03:24:23,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ac95cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:24:23, skipping insertion in model container [2018-01-25 03:24:23,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:24:23" (3/3) ... [2018-01-25 03:24:23,182 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test22_5_false-valid-deref.i [2018-01-25 03:24:23,192 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 03:24:23,202 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2018-01-25 03:24:23,255 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 03:24:23,255 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 03:24:23,255 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 03:24:23,255 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 03:24:23,255 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 03:24:23,256 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 03:24:23,256 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 03:24:23,256 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 03:24:23,257 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 03:24:23,277 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2018-01-25 03:24:23,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-25 03:24:23,283 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:24:23,284 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 03:24:23,285 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_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 03:24:23,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1211515492, now seen corresponding path program 1 times [2018-01-25 03:24:23,291 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:24:23,350 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:24:23,350 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:24:23,350 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:24:23,350 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:24:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:24:23,420 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:24:23,638 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 03:24:23,641 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:24:23,641 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:24:23,641 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:24:23,644 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:24:23,735 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:24:23,736 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:24:23,738 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 5 states. [2018-01-25 03:24:23,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:24:23,820 INFO L93 Difference]: Finished difference Result 234 states and 249 transitions. [2018-01-25 03:24:23,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:24:23,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-25 03:24:23,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:24:23,836 INFO L225 Difference]: With dead ends: 234 [2018-01-25 03:24:23,836 INFO L226 Difference]: Without dead ends: 126 [2018-01-25 03:24:23,840 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 [2018-01-25 03:24:23,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-01-25 03:24:23,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2018-01-25 03:24:23,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-01-25 03:24:23,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 132 transitions. [2018-01-25 03:24:23,885 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 132 transitions. Word has length 17 [2018-01-25 03:24:23,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:24:23,886 INFO L432 AbstractCegarLoop]: Abstraction has 124 states and 132 transitions. [2018-01-25 03:24:23,886 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:24:23,886 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 132 transitions. [2018-01-25 03:24:23,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-25 03:24:23,887 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:24:23,887 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 03:24:23,887 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_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 03:24:23,887 INFO L82 PathProgramCache]: Analyzing trace with hash 774524518, now seen corresponding path program 1 times [2018-01-25 03:24:23,887 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:24:23,889 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:24:23,889 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:24:23,889 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:24:23,889 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:24:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:24:23,911 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:24:23,983 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 03:24:23,983 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:24:23,983 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:24:23,984 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:24:23,985 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 03:24:23,986 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 03:24:23,986 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:24:23,986 INFO L87 Difference]: Start difference. First operand 124 states and 132 transitions. Second operand 6 states. [2018-01-25 03:24:24,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:24:24,301 INFO L93 Difference]: Finished difference Result 126 states and 134 transitions. [2018-01-25 03:24:24,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:24:24,301 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-01-25 03:24:24,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:24:24,303 INFO L225 Difference]: With dead ends: 126 [2018-01-25 03:24:24,304 INFO L226 Difference]: Without dead ends: 125 [2018-01-25 03:24:24,305 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 03:24:24,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-01-25 03:24:24,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2018-01-25 03:24:24,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-01-25 03:24:24,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 131 transitions. [2018-01-25 03:24:24,320 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 131 transitions. Word has length 19 [2018-01-25 03:24:24,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:24:24,320 INFO L432 AbstractCegarLoop]: Abstraction has 123 states and 131 transitions. [2018-01-25 03:24:24,321 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 03:24:24,321 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 131 transitions. [2018-01-25 03:24:24,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-25 03:24:24,322 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:24:24,322 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 03:24:24,325 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_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 03:24:24,326 INFO L82 PathProgramCache]: Analyzing trace with hash 774524519, now seen corresponding path program 1 times [2018-01-25 03:24:24,326 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:24:24,327 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:24:24,327 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:24:24,328 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:24:24,328 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:24:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:24:24,353 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:24:24,670 WARN L146 SmtUtils]: Spent 189ms on a formula simplification. DAG size of input: 19 DAG size of output 17 [2018-01-25 03:24:24,866 WARN L146 SmtUtils]: Spent 146ms on a formula simplification. DAG size of input: 17 DAG size of output 15 [2018-01-25 03:24:24,927 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 03:24:24,928 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:24:24,928 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 03:24:24,928 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:24:24,928 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 03:24:24,929 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 03:24:24,929 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:24:24,929 INFO L87 Difference]: Start difference. First operand 123 states and 131 transitions. Second operand 7 states. [2018-01-25 03:24:25,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:24:25,207 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions. [2018-01-25 03:24:25,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 03:24:25,208 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-01-25 03:24:25,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:24:25,209 INFO L225 Difference]: With dead ends: 125 [2018-01-25 03:24:25,210 INFO L226 Difference]: Without dead ends: 124 [2018-01-25 03:24:25,210 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-01-25 03:24:25,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-01-25 03:24:25,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2018-01-25 03:24:25,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-01-25 03:24:25,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 130 transitions. [2018-01-25 03:24:25,225 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 130 transitions. Word has length 19 [2018-01-25 03:24:25,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:24:25,225 INFO L432 AbstractCegarLoop]: Abstraction has 122 states and 130 transitions. [2018-01-25 03:24:25,226 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 03:24:25,226 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 130 transitions. [2018-01-25 03:24:25,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-25 03:24:25,227 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:24:25,227 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] [2018-01-25 03:24:25,227 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_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 03:24:25,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1886266821, now seen corresponding path program 1 times [2018-01-25 03:24:25,228 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:24:25,230 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:24:25,230 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:24:25,230 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:24:25,230 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:24:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:24:25,259 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:24:25,391 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 03:24:25,392 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:24:25,392 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-25 03:24:25,392 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:24:25,392 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 03:24:25,392 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 03:24:25,392 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-01-25 03:24:25,393 INFO L87 Difference]: Start difference. First operand 122 states and 130 transitions. Second operand 9 states. [2018-01-25 03:24:25,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:24:25,590 INFO L93 Difference]: Finished difference Result 198 states and 213 transitions. [2018-01-25 03:24:25,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-25 03:24:25,591 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2018-01-25 03:24:25,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:24:25,593 INFO L225 Difference]: With dead ends: 198 [2018-01-25 03:24:25,593 INFO L226 Difference]: Without dead ends: 139 [2018-01-25 03:24:25,594 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-01-25 03:24:25,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-01-25 03:24:25,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2018-01-25 03:24:25,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-01-25 03:24:25,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 144 transitions. [2018-01-25 03:24:25,617 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 144 transitions. Word has length 31 [2018-01-25 03:24:25,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:24:25,617 INFO L432 AbstractCegarLoop]: Abstraction has 135 states and 144 transitions. [2018-01-25 03:24:25,618 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 03:24:25,618 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 144 transitions. [2018-01-25 03:24:25,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 03:24:25,619 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:24:25,619 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 03:24:25,619 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_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 03:24:25,620 INFO L82 PathProgramCache]: Analyzing trace with hash 107698799, now seen corresponding path program 1 times [2018-01-25 03:24:25,620 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:24:25,621 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:24:25,621 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:24:25,621 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:24:25,622 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:24:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:24:25,652 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:24:25,848 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 03:24:25,848 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:24:25,848 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-25 03:24:25,848 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:24:25,849 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 03:24:25,849 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 03:24:25,849 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-01-25 03:24:25,849 INFO L87 Difference]: Start difference. First operand 135 states and 144 transitions. Second operand 10 states. [2018-01-25 03:24:26,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:24:26,101 INFO L93 Difference]: Finished difference Result 135 states and 144 transitions. [2018-01-25 03:24:26,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-25 03:24:26,102 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-01-25 03:24:26,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:24:26,104 INFO L225 Difference]: With dead ends: 135 [2018-01-25 03:24:26,104 INFO L226 Difference]: Without dead ends: 134 [2018-01-25 03:24:26,104 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 [2018-01-25 03:24:26,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-01-25 03:24:26,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-01-25 03:24:26,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-01-25 03:24:26,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 143 transitions. [2018-01-25 03:24:26,125 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 143 transitions. Word has length 34 [2018-01-25 03:24:26,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:24:26,125 INFO L432 AbstractCegarLoop]: Abstraction has 134 states and 143 transitions. [2018-01-25 03:24:26,126 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 03:24:26,126 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 143 transitions. [2018-01-25 03:24:26,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 03:24:26,127 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:24:26,127 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 03:24:26,127 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_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 03:24:26,128 INFO L82 PathProgramCache]: Analyzing trace with hash 107698800, now seen corresponding path program 1 times [2018-01-25 03:24:26,128 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:24:26,129 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:24:26,129 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:24:26,130 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:24:26,130 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:24:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:24:26,153 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:24:26,327 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 03:24:26,327 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:24:26,327 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:24:26,327 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:24:26,328 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:24:26,328 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:24:26,328 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:24:26,328 INFO L87 Difference]: Start difference. First operand 134 states and 143 transitions. Second operand 4 states. [2018-01-25 03:24:26,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:24:26,358 INFO L93 Difference]: Finished difference Result 230 states and 245 transitions. [2018-01-25 03:24:26,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:24:26,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-01-25 03:24:26,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:24:26,360 INFO L225 Difference]: With dead ends: 230 [2018-01-25 03:24:26,360 INFO L226 Difference]: Without dead ends: 135 [2018-01-25 03:24:26,362 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:24:26,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-01-25 03:24:26,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-01-25 03:24:26,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-01-25 03:24:26,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 144 transitions. [2018-01-25 03:24:26,373 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 144 transitions. Word has length 34 [2018-01-25 03:24:26,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:24:26,374 INFO L432 AbstractCegarLoop]: Abstraction has 135 states and 144 transitions. [2018-01-25 03:24:26,374 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:24:26,374 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 144 transitions. [2018-01-25 03:24:26,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-25 03:24:26,375 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:24:26,375 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 03:24:26,375 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_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 03:24:26,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1590593736, now seen corresponding path program 1 times [2018-01-25 03:24:26,376 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:24:26,378 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:24:26,378 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:24:26,378 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:24:26,378 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:24:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:24:26,402 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:24:26,504 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 03:24:26,504 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:24:26,504 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 03:24:26,505 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2018-01-25 03:24:26,507 INFO L201 CegarAbsIntRunner]: [0], [2], [6], [10], [27], [32], [48], [54], [58], [62], [65], [67], [68], [72], [74], [75], [118], [121], [122], [123], [125], [126], [127], [135], [136], [137], [138], [139], [141], [145], [149], [155], [169], [170], [171] [2018-01-25 03:24:26,562 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 03:24:26,562 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