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_2_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 03:36:38,622 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 03:36:38,624 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 03:36:38,637 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 03:36:38,638 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 03:36:38,639 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 03:36:38,640 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 03:36:38,642 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 03:36:38,669 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 03:36:38,670 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 03:36:38,671 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 03:36:38,671 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 03:36:38,671 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 03:36:38,672 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 03:36:38,673 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 03:36:38,675 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 03:36:38,677 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 03:36:38,679 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 03:36:38,680 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 03:36:38,681 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 03:36:38,683 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 03:36:38,684 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 03:36:38,684 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 03:36:38,685 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 03:36:38,686 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 03:36:38,687 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 03:36:38,687 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 03:36:38,688 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 03:36:38,688 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 03:36:38,688 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 03:36:38,689 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 03:36:38,689 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 03:36:38,719 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 03:36:38,719 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 03:36:38,720 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 03:36:38,720 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 03:36:38,720 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 03:36:38,721 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 03:36:38,721 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-25 03:36:38,722 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 03:36:38,722 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 03:36:38,723 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 03:36:38,723 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 03:36:38,723 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 03:36:38,723 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 03:36:38,724 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 03:36:38,724 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 03:36:38,724 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 03:36:38,724 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 03:36:38,724 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 03:36:38,724 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 03:36:38,725 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 03:36:38,726 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 03:36:38,727 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 03:36:38,727 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 03:36:38,727 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 03:36:38,727 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 03:36:38,727 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:36:38,728 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 03:36:38,728 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 03:36:38,728 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 03:36:38,728 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 03:36:38,728 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 03:36:38,729 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 03:36:38,729 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 03:36:38,729 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 03:36:38,729 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 03:36:38,731 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 03:36:38,731 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 03:36:38,765 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 03:36:38,778 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 03:36:38,782 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 03:36:38,784 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 03:36:38,785 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 03:36:38,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test22_2_true-valid-memsafety_true-termination.i [2018-01-25 03:36:38,982 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 03:36:38,989 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 03:36:38,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 03:36:38,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 03:36:38,998 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 03:36:38,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:36:38" (1/1) ... [2018-01-25 03:36:39,003 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 03:36:39, skipping insertion in model container [2018-01-25 03:36:39,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:36:38" (1/1) ... [2018-01-25 03:36:39,022 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:36:39,076 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:36:39,207 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:36:39,234 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:36:39,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:36:39 WrapperNode [2018-01-25 03:36:39,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 03:36:39,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 03:36:39,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 03:36:39,250 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 03:36:39,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:36:39" (1/1) ... [2018-01-25 03:36:39,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:36:39" (1/1) ... [2018-01-25 03:36:39,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:36:39" (1/1) ... [2018-01-25 03:36:39,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:36:39" (1/1) ... [2018-01-25 03:36:39,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:36:39" (1/1) ... [2018-01-25 03:36:39,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:36:39" (1/1) ... [2018-01-25 03:36:39,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:36:39" (1/1) ... [2018-01-25 03:36:39,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 03:36:39,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 03:36:39,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 03:36:39,290 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 03:36:39,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:36:39" (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 03:36:39,367 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 03:36:39,367 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 03:36:39,367 INFO L136 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2018-01-25 03:36:39,367 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-25 03:36:39,367 INFO L136 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2018-01-25 03:36:39,367 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2018-01-25 03:36:39,367 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2018-01-25 03:36:39,367 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2018-01-25 03:36:39,368 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2018-01-25 03:36:39,368 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2018-01-25 03:36:39,368 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2018-01-25 03:36:39,368 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2018-01-25 03:36:39,368 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2018-01-25 03:36:39,368 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2018-01-25 03:36:39,368 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2018-01-25 03:36:39,368 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2018-01-25 03:36:39,369 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2018-01-25 03:36:39,369 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2018-01-25 03:36:39,369 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-25 03:36:39,369 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 03:36:39,369 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 03:36:39,370 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 03:36:39,370 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 03:36:39,370 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 03:36:39,370 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 03:36:39,370 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 03:36:39,370 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 03:36:39,371 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-25 03:36:39,371 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-25 03:36:39,371 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 03:36:39,371 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 03:36:39,371 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 03:36:39,371 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-25 03:36:39,372 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-25 03:36:39,372 INFO L128 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2018-01-25 03:36:39,372 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2018-01-25 03:36:39,372 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2018-01-25 03:36:39,372 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2018-01-25 03:36:39,372 INFO L128 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2018-01-25 03:36:39,373 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2018-01-25 03:36:39,373 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2018-01-25 03:36:39,373 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2018-01-25 03:36:39,373 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2018-01-25 03:36:39,373 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2018-01-25 03:36:39,373 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2018-01-25 03:36:39,373 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2018-01-25 03:36:39,374 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2018-01-25 03:36:39,374 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2018-01-25 03:36:39,374 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2018-01-25 03:36:39,374 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-25 03:36:39,374 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 03:36:39,374 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 03:36:39,374 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 03:36:39,734 WARN L455 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-01-25 03:36:39,926 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 03:36:39,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:36:39 BoogieIcfgContainer [2018-01-25 03:36:39,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 03:36:39,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 03:36:39,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 03:36:39,930 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 03:36:39,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 03:36:38" (1/3) ... [2018-01-25 03:36:39,931 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 25.01 03:36:39, skipping insertion in model container [2018-01-25 03:36:39,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:36:39" (2/3) ... [2018-01-25 03:36:39,932 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 25.01 03:36:39, skipping insertion in model container [2018-01-25 03:36:39,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:36:39" (3/3) ... [2018-01-25 03:36:39,933 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test22_2_true-valid-memsafety_true-termination.i [2018-01-25 03:36:39,941 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 03:36:40,015 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2018-01-25 03:36:40,068 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 03:36:40,069 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 03:36:40,069 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 03:36:40,069 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 03:36:40,069 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 03:36:40,069 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 03:36:40,069 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 03:36:40,070 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 03:36:40,071 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 03:36:40,097 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states. [2018-01-25 03:36:40,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-25 03:36:40,102 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:36:40,103 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 03:36:40,103 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 03:36:40,108 INFO L82 PathProgramCache]: Analyzing trace with hash -998986606, now seen corresponding path program 1 times [2018-01-25 03:36:40,110 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:36:40,158 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:36:40,158 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:36:40,159 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:36:40,159 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:36:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:36:40,213 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:36:40,366 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 03:36:40,368 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:36:40,369 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:36:40,369 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:36:40,470 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:36:40,483 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:36:40,483 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:36:40,485 INFO L87 Difference]: Start difference. First operand 143 states. Second operand 5 states. [2018-01-25 03:36:40,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:36:40,558 INFO L93 Difference]: Finished difference Result 274 states and 291 transitions. [2018-01-25 03:36:40,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:36:40,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-25 03:36:40,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:36:40,572 INFO L225 Difference]: With dead ends: 274 [2018-01-25 03:36:40,572 INFO L226 Difference]: Without dead ends: 146 [2018-01-25 03:36:40,576 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:36:40,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-25 03:36:40,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2018-01-25 03:36:40,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-01-25 03:36:40,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 153 transitions. [2018-01-25 03:36:40,624 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 153 transitions. Word has length 17 [2018-01-25 03:36:40,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:36:40,624 INFO L432 AbstractCegarLoop]: Abstraction has 144 states and 153 transitions. [2018-01-25 03:36:40,624 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:36:40,624 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 153 transitions. [2018-01-25 03:36:40,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-25 03:36:40,625 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:36:40,625 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 03:36:40,625 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 03:36:40,625 INFO L82 PathProgramCache]: Analyzing trace with hash -2077747980, now seen corresponding path program 1 times [2018-01-25 03:36:40,626 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:36:40,627 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:36:40,627 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:36:40,627 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:36:40,627 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:36:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:36:40,651 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:36:40,725 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 03:36:40,725 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:36:40,725 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:36:40,725 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:36:40,727 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 03:36:40,727 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 03:36:40,728 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:36:40,728 INFO L87 Difference]: Start difference. First operand 144 states and 153 transitions. Second operand 6 states. [2018-01-25 03:36:41,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:36:41,104 INFO L93 Difference]: Finished difference Result 146 states and 155 transitions. [2018-01-25 03:36:41,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:36:41,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-01-25 03:36:41,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:36:41,107 INFO L225 Difference]: With dead ends: 146 [2018-01-25 03:36:41,107 INFO L226 Difference]: Without dead ends: 145 [2018-01-25 03:36:41,108 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 03:36:41,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-01-25 03:36:41,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2018-01-25 03:36:41,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-01-25 03:36:41,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 152 transitions. [2018-01-25 03:36:41,126 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 152 transitions. Word has length 19 [2018-01-25 03:36:41,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:36:41,126 INFO L432 AbstractCegarLoop]: Abstraction has 143 states and 152 transitions. [2018-01-25 03:36:41,127 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 03:36:41,127 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 152 transitions. [2018-01-25 03:36:41,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-25 03:36:41,128 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:36:41,128 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 03:36:41,128 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 03:36:41,129 INFO L82 PathProgramCache]: Analyzing trace with hash -2077747979, now seen corresponding path program 1 times [2018-01-25 03:36:41,129 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:36:41,130 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:36:41,130 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:36:41,130 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:36:41,131 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:36:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:36:41,153 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:36:41,545 WARN L146 SmtUtils]: Spent 202ms on a formula simplification. DAG size of input: 17 DAG size of output 15 [2018-01-25 03:36:41,639 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 03:36:41,639 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:36:41,639 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 03:36:41,639 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:36:41,640 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 03:36:41,640 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 03:36:41,640 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:36:41,640 INFO L87 Difference]: Start difference. First operand 143 states and 152 transitions. Second operand 7 states. [2018-01-25 03:36:41,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:36:41,872 INFO L93 Difference]: Finished difference Result 145 states and 154 transitions. [2018-01-25 03:36:41,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 03:36:41,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-01-25 03:36:41,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:36:41,876 INFO L225 Difference]: With dead ends: 145 [2018-01-25 03:36:41,876 INFO L226 Difference]: Without dead ends: 144 [2018-01-25 03:36:41,877 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-01-25 03:36:41,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-01-25 03:36:41,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2018-01-25 03:36:41,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-01-25 03:36:41,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 151 transitions. [2018-01-25 03:36:41,892 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 151 transitions. Word has length 19 [2018-01-25 03:36:41,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:36:41,893 INFO L432 AbstractCegarLoop]: Abstraction has 142 states and 151 transitions. [2018-01-25 03:36:41,893 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 03:36:41,893 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 151 transitions. [2018-01-25 03:36:41,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-25 03:36:41,894 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:36:41,894 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:36:41,895 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 03:36:41,895 INFO L82 PathProgramCache]: Analyzing trace with hash -471802203, now seen corresponding path program 1 times [2018-01-25 03:36:41,895 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:36:41,897 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:36:41,897 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:36:41,897 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:36:41,897 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:36:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:36:41,926 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:36:42,036 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 03:36:42,036 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:36:42,036 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-25 03:36:42,037 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:36:42,037 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 03:36:42,037 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 03:36:42,037 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:36:42,038 INFO L87 Difference]: Start difference. First operand 142 states and 151 transitions. Second operand 7 states. [2018-01-25 03:36:42,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:36:42,125 INFO L93 Difference]: Finished difference Result 238 states and 253 transitions. [2018-01-25 03:36:42,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 03:36:42,125 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-01-25 03:36:42,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:36:42,127 INFO L225 Difference]: With dead ends: 238 [2018-01-25 03:36:42,127 INFO L226 Difference]: Without dead ends: 159 [2018-01-25 03:36:42,127 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:36:42,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-01-25 03:36:42,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 151. [2018-01-25 03:36:42,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-01-25 03:36:42,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 160 transitions. [2018-01-25 03:36:42,141 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 160 transitions. Word has length 27 [2018-01-25 03:36:42,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:36:42,142 INFO L432 AbstractCegarLoop]: Abstraction has 151 states and 160 transitions. [2018-01-25 03:36:42,142 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 03:36:42,142 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 160 transitions. [2018-01-25 03:36:42,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 03:36:42,144 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:36:42,144 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 03:36:42,144 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 03:36:42,144 INFO L82 PathProgramCache]: Analyzing trace with hash 131109242, now seen corresponding path program 1 times [2018-01-25 03:36:42,144 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:36:42,146 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:36:42,146 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:36:42,146 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:36:42,147 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:36:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:36:42,168 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:36:42,296 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 03:36:42,296 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:36:42,297 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-25 03:36:42,297 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:36:42,297 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 03:36:42,297 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 03:36:42,298 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-01-25 03:36:42,298 INFO L87 Difference]: Start difference. First operand 151 states and 160 transitions. Second operand 10 states. [2018-01-25 03:36:42,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:36:42,712 INFO L93 Difference]: Finished difference Result 151 states and 160 transitions. [2018-01-25 03:36:42,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-25 03:36:42,713 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-01-25 03:36:42,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:36:42,715 INFO L225 Difference]: With dead ends: 151 [2018-01-25 03:36:42,715 INFO L226 Difference]: Without dead ends: 150 [2018-01-25 03:36:42,716 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 03:36:42,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-01-25 03:36:42,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-01-25 03:36:42,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-25 03:36:42,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 159 transitions. [2018-01-25 03:36:42,730 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 159 transitions. Word has length 34 [2018-01-25 03:36:42,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:36:42,730 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 159 transitions. [2018-01-25 03:36:42,730 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 03:36:42,731 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 159 transitions. [2018-01-25 03:36:42,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 03:36:42,732 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:36:42,732 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 03:36:42,732 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 03:36:42,732 INFO L82 PathProgramCache]: Analyzing trace with hash 131109243, now seen corresponding path program 1 times [2018-01-25 03:36:42,733 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:36:42,734 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:36:42,734 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:36:42,734 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:36:42,734 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:36:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:36:42,752 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:36:42,795 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 03:36:42,795 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:36:42,795 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:36:42,795 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:36:42,796 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:36:42,796 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:36:42,796 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:36:42,796 INFO L87 Difference]: Start difference. First operand 150 states and 159 transitions. Second operand 4 states. [2018-01-25 03:36:42,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:36:42,837 INFO L93 Difference]: Finished difference Result 266 states and 282 transitions. [2018-01-25 03:36:42,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:36:42,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-01-25 03:36:42,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:36:42,840 INFO L225 Difference]: With dead ends: 266 [2018-01-25 03:36:42,840 INFO L226 Difference]: Without dead ends: 151 [2018-01-25 03:36:42,841 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:36:42,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-01-25 03:36:42,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-01-25 03:36:42,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-01-25 03:36:42,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 160 transitions. [2018-01-25 03:36:42,854 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 160 transitions. Word has length 34 [2018-01-25 03:36:42,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:36:42,855 INFO L432 AbstractCegarLoop]: Abstraction has 151 states and 160 transitions. [2018-01-25 03:36:42,855 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:36:42,855 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 160 transitions. [2018-01-25 03:36:42,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-25 03:36:42,856 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:36:42,857 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 03:36:42,857 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 03:36:42,857 INFO L82 PathProgramCache]: Analyzing trace with hash -2110897305, now seen corresponding path program 1 times [2018-01-25 03:36:42,857 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:36:42,859 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:36:42,859 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:36:42,859 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:36:42,859 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:36:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:36:42,879 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:36:42,928 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 03:36:42,928 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:36:42,928 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 03:36:42,929 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2018-01-25 03:36:42,931 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] [2018-01-25 03:36:42,979 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 03:36:42,979 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