java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test22_1_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:46:31,599 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:46:31,602 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:46:31,617 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:46:31,618 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:46:31,619 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:46:31,620 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:46:31,621 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:46:31,623 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:46:31,624 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:46:31,625 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:46:31,625 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:46:31,626 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:46:31,627 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:46:31,628 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:46:31,631 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:46:31,633 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:46:31,635 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:46:31,636 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:46:31,637 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:46:31,640 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 20:46:31,640 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 20:46:31,640 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 20:46:31,641 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 20:46:31,642 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 20:46:31,643 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 20:46:31,644 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 20:46:31,644 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 20:46:31,645 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 20:46:31,645 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:46:31,645 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:46:31,646 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf [2018-01-24 20:46:31,655 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:46:31,655 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:46:31,656 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:46:31,656 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:46:31,656 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:46:31,656 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:46:31,656 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:46:31,656 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:46:31,657 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:46:31,657 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:46:31,657 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:46:31,657 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:46:31,657 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:46:31,658 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:46:31,658 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:46:31,658 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:46:31,658 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:46:31,658 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:46:31,658 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:46:31,658 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:46:31,658 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:46:31,659 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:46:31,659 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:46:31,659 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:46:31,659 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:46:31,659 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:46:31,660 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:46:31,660 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:46:31,660 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:46:31,660 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:46:31,660 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:46:31,660 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:46:31,660 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:46:31,661 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:46:31,661 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:46:31,661 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:46:31,661 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:46:31,694 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:46:31,704 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:46:31,707 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:46:31,708 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:46:31,709 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:46:31,709 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test22_1_true-valid-memsafety_true-termination.i [2018-01-24 20:46:31,881 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:46:31,887 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:46:31,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:46:31,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:46:31,895 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:46:31,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:46:31" (1/1) ... [2018-01-24 20:46:31,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22982850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:46:31, skipping insertion in model container [2018-01-24 20:46:31,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:46:31" (1/1) ... [2018-01-24 20:46:31,916 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:46:31,966 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:46:32,085 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:46:32,106 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:46:32,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:46:32 WrapperNode [2018-01-24 20:46:32,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:46:32,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:46:32,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:46:32,119 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:46:32,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:46:32" (1/1) ... [2018-01-24 20:46:32,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:46:32" (1/1) ... [2018-01-24 20:46:32,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:46:32" (1/1) ... [2018-01-24 20:46:32,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:46:32" (1/1) ... [2018-01-24 20:46:32,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:46:32" (1/1) ... [2018-01-24 20:46:32,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:46:32" (1/1) ... [2018-01-24 20:46:32,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:46:32" (1/1) ... [2018-01-24 20:46:32,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:46:32,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:46:32,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:46:32,172 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:46:32,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:46:32" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:46:32,227 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:46:32,227 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:46:32,227 INFO L136 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2018-01-24 20:46:32,227 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-24 20:46:32,227 INFO L136 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2018-01-24 20:46:32,228 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2018-01-24 20:46:32,228 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2018-01-24 20:46:32,228 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2018-01-24 20:46:32,228 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2018-01-24 20:46:32,228 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2018-01-24 20:46:32,228 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2018-01-24 20:46:32,228 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2018-01-24 20:46:32,228 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2018-01-24 20:46:32,228 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2018-01-24 20:46:32,229 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2018-01-24 20:46:32,229 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-24 20:46:32,229 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:46:32,229 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 20:46:32,229 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 20:46:32,230 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 20:46:32,230 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 20:46:32,230 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:46:32,230 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:46:32,230 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:46:32,231 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-24 20:46:32,231 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-24 20:46:32,231 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:46:32,231 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 20:46:32,231 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:46:32,231 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-24 20:46:32,232 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-24 20:46:32,232 INFO L128 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2018-01-24 20:46:32,232 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2018-01-24 20:46:32,232 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2018-01-24 20:46:32,232 INFO L128 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2018-01-24 20:46:32,232 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2018-01-24 20:46:32,233 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2018-01-24 20:46:32,233 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2018-01-24 20:46:32,233 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2018-01-24 20:46:32,233 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2018-01-24 20:46:32,233 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2018-01-24 20:46:32,233 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2018-01-24 20:46:32,233 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2018-01-24 20:46:32,234 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-24 20:46:32,234 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:46:32,234 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:46:32,234 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:46:32,479 WARN L455 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-01-24 20:46:32,619 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:46:32,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:46:32 BoogieIcfgContainer [2018-01-24 20:46:32,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:46:32,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:46:32,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:46:32,623 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:46:32,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:46:31" (1/3) ... [2018-01-24 20:46:32,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce700ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:46:32, skipping insertion in model container [2018-01-24 20:46:32,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:46:32" (2/3) ... [2018-01-24 20:46:32,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce700ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:46:32, skipping insertion in model container [2018-01-24 20:46:32,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:46:32" (3/3) ... [2018-01-24 20:46:32,626 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test22_1_true-valid-memsafety_true-termination.i [2018-01-24 20:46:32,633 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:46:32,640 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2018-01-24 20:46:32,679 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:46:32,679 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:46:32,679 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:46:32,679 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:46:32,679 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:46:32,679 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:46:32,679 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:46:32,680 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:46:32,680 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:46:32,699 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2018-01-24 20:46:32,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 20:46:32,706 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:46:32,707 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:46:32,707 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]=== [2018-01-24 20:46:32,711 INFO L82 PathProgramCache]: Analyzing trace with hash -401333144, now seen corresponding path program 1 times [2018-01-24 20:46:32,713 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:46:32,761 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:46:32,761 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:46:32,761 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:46:32,761 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:46:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:46:32,814 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:46:32,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:46:32,939 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:46:32,939 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:46:32,939 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:46:32,942 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:46:33,047 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:46:33,047 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:46:33,049 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 5 states. [2018-01-24 20:46:33,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:46:33,115 INFO L93 Difference]: Finished difference Result 224 states and 237 transitions. [2018-01-24 20:46:33,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:46:33,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-24 20:46:33,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:46:33,130 INFO L225 Difference]: With dead ends: 224 [2018-01-24 20:46:33,130 INFO L226 Difference]: Without dead ends: 121 [2018-01-24 20:46:33,134 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 [2018-01-24 20:46:33,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-01-24 20:46:33,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2018-01-24 20:46:33,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-01-24 20:46:33,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2018-01-24 20:46:33,176 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 17 [2018-01-24 20:46:33,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:46:33,177 INFO L432 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2018-01-24 20:46:33,177 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:46:33,177 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2018-01-24 20:46:33,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-24 20:46:33,178 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:46:33,178 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:46:33,178 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]=== [2018-01-24 20:46:33,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1306365930, now seen corresponding path program 1 times [2018-01-24 20:46:33,179 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:46:33,180 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:46:33,180 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:46:33,180 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:46:33,181 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:46:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:46:33,202 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:46:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:46:33,271 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:46:33,271 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:46:33,271 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:46:33,273 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 20:46:33,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 20:46:33,274 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:46:33,274 INFO L87 Difference]: Start difference. First operand 119 states and 126 transitions. Second operand 6 states. [2018-01-24 20:46:33,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:46:33,496 INFO L93 Difference]: Finished difference Result 121 states and 128 transitions. [2018-01-24 20:46:33,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:46:33,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-01-24 20:46:33,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:46:33,498 INFO L225 Difference]: With dead ends: 121 [2018-01-24 20:46:33,498 INFO L226 Difference]: Without dead ends: 120 [2018-01-24 20:46:33,499 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:46:33,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-01-24 20:46:33,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2018-01-24 20:46:33,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-01-24 20:46:33,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 125 transitions. [2018-01-24 20:46:33,513 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 125 transitions. Word has length 19 [2018-01-24 20:46:33,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:46:33,514 INFO L432 AbstractCegarLoop]: Abstraction has 118 states and 125 transitions. [2018-01-24 20:46:33,514 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 20:46:33,514 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 125 transitions. [2018-01-24 20:46:33,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-24 20:46:33,515 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:46:33,515 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:46:33,515 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]=== [2018-01-24 20:46:33,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1306365931, now seen corresponding path program 1 times [2018-01-24 20:46:33,515 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:46:33,517 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:46:33,517 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:46:33,517 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:46:33,517 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:46:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:46:33,539 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:46:33,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:46:33,901 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:46:33,901 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:46:33,901 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:46:33,901 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 20:46:33,902 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 20:46:33,902 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:46:33,902 INFO L87 Difference]: Start difference. First operand 118 states and 125 transitions. Second operand 7 states. [2018-01-24 20:46:34,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:46:34,097 INFO L93 Difference]: Finished difference Result 120 states and 127 transitions. [2018-01-24 20:46:34,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 20:46:34,097 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-01-24 20:46:34,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:46:34,099 INFO L225 Difference]: With dead ends: 120 [2018-01-24 20:46:34,099 INFO L226 Difference]: Without dead ends: 119 [2018-01-24 20:46:34,099 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-01-24 20:46:34,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-01-24 20:46:34,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2018-01-24 20:46:34,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-01-24 20:46:34,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 124 transitions. [2018-01-24 20:46:34,108 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 124 transitions. Word has length 19 [2018-01-24 20:46:34,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:46:34,109 INFO L432 AbstractCegarLoop]: Abstraction has 117 states and 124 transitions. [2018-01-24 20:46:34,109 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 20:46:34,109 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 124 transitions. [2018-01-24 20:46:34,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 20:46:34,110 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:46:34,110 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] [2018-01-24 20:46:34,110 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]=== [2018-01-24 20:46:34,110 INFO L82 PathProgramCache]: Analyzing trace with hash -860603530, now seen corresponding path program 1 times [2018-01-24 20:46:34,110 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:46:34,112 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:46:34,113 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:46:34,114 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:46:34,114 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:46:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:46:34,138 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:46:34,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:46:34,229 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:46:34,230 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 20:46:34,230 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:46:34,230 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 20:46:34,230 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 20:46:34,230 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:46:34,231 INFO L87 Difference]: Start difference. First operand 117 states and 124 transitions. Second operand 7 states. [2018-01-24 20:46:34,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:46:34,315 INFO L93 Difference]: Finished difference Result 183 states and 192 transitions. [2018-01-24 20:46:34,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 20:46:34,315 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2018-01-24 20:46:34,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:46:34,317 INFO L225 Difference]: With dead ends: 183 [2018-01-24 20:46:34,318 INFO L226 Difference]: Without dead ends: 129 [2018-01-24 20:46:34,319 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:46:34,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-01-24 20:46:34,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2018-01-24 20:46:34,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-24 20:46:34,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 132 transitions. [2018-01-24 20:46:34,333 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 132 transitions. Word has length 29 [2018-01-24 20:46:34,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:46:34,333 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 132 transitions. [2018-01-24 20:46:34,334 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 20:46:34,334 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 132 transitions. [2018-01-24 20:46:34,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-24 20:46:34,335 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:46:34,335 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:46:34,335 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]=== [2018-01-24 20:46:34,336 INFO L82 PathProgramCache]: Analyzing trace with hash 23284980, now seen corresponding path program 1 times [2018-01-24 20:46:34,336 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:46:34,337 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:46:34,337 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:46:34,338 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:46:34,338 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:46:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:46:34,351 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:46:34,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:46:34,394 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:46:34,394 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 20:46:34,394 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:46:34,395 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 20:46:34,395 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 20:46:34,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:46:34,395 INFO L87 Difference]: Start difference. First operand 125 states and 132 transitions. Second operand 3 states. [2018-01-24 20:46:34,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:46:34,552 INFO L93 Difference]: Finished difference Result 141 states and 148 transitions. [2018-01-24 20:46:34,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 20:46:34,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2018-01-24 20:46:34,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:46:34,554 INFO L225 Difference]: With dead ends: 141 [2018-01-24 20:46:34,554 INFO L226 Difference]: Without dead ends: 129 [2018-01-24 20:46:34,554 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:46:34,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-01-24 20:46:34,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 121. [2018-01-24 20:46:34,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-01-24 20:46:34,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 127 transitions. [2018-01-24 20:46:34,572 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 127 transitions. Word has length 27 [2018-01-24 20:46:34,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:46:34,573 INFO L432 AbstractCegarLoop]: Abstraction has 121 states and 127 transitions. [2018-01-24 20:46:34,573 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 20:46:34,573 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 127 transitions. [2018-01-24 20:46:34,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 20:46:34,574 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:46:34,574 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] [2018-01-24 20:46:34,574 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]=== [2018-01-24 20:46:34,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1295663626, now seen corresponding path program 1 times [2018-01-24 20:46:34,574 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:46:34,575 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:46:34,575 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:46:34,575 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:46:34,576 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:46:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:46:34,586 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:46:34,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:46:34,622 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:46:34,623 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:46:34,623 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:46:34,623 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 20:46:34,623 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 20:46:34,623 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:46:34,623 INFO L87 Difference]: Start difference. First operand 121 states and 127 transitions. Second operand 6 states. [2018-01-24 20:46:34,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:46:34,643 INFO L93 Difference]: Finished difference Result 125 states and 130 transitions. [2018-01-24 20:46:34,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:46:34,644 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2018-01-24 20:46:34,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:46:34,645 INFO L225 Difference]: With dead ends: 125 [2018-01-24 20:46:34,646 INFO L226 Difference]: Without dead ends: 113 [2018-01-24 20:46:34,646 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:46:34,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-01-24 20:46:34,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-01-24 20:46:34,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-01-24 20:46:34,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 118 transitions. [2018-01-24 20:46:34,657 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 118 transitions. Word has length 29 [2018-01-24 20:46:34,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:46:34,657 INFO L432 AbstractCegarLoop]: Abstraction has 113 states and 118 transitions. [2018-01-24 20:46:34,657 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 20:46:34,657 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 118 transitions. [2018-01-24 20:46:34,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 20:46:34,658 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:46:34,658 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:46:34,659 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]=== [2018-01-24 20:46:34,659 INFO L82 PathProgramCache]: Analyzing trace with hash 522747174, now seen corresponding path program 1 times [2018-01-24 20:46:34,659 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:46:34,660 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:46:34,661 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:46:34,661 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:46:34,661 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:46:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:46:34,677 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:46:34,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:46:34,709 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:46:34,710 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:46:34,710 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:46:34,710 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:46:34,710 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:46:34,711 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:46:34,711 INFO L87 Difference]: Start difference. First operand 113 states and 118 transitions. Second operand 4 states. [2018-01-24 20:46:34,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:46:34,736 INFO L93 Difference]: Finished difference Result 205 states and 215 transitions. [2018-01-24 20:46:34,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:46:34,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-01-24 20:46:34,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:46:34,738 INFO L225 Difference]: With dead ends: 205 [2018-01-24 20:46:34,739 INFO L226 Difference]: Without dead ends: 114 [2018-01-24 20:46:34,740 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:46:34,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-01-24 20:46:34,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-01-24 20:46:34,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-01-24 20:46:34,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 119 transitions. [2018-01-24 20:46:34,750 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 119 transitions. Word has length 34 [2018-01-24 20:46:34,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:46:34,750 INFO L432 AbstractCegarLoop]: Abstraction has 114 states and 119 transitions. [2018-01-24 20:46:34,750 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:46:34,750 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 119 transitions. [2018-01-24 20:46:34,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-24 20:46:34,751 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:46:34,751 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:46:34,752 INFO L371 AbstractCegarLoop]: === Iteration 8 === [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]=== [2018-01-24 20:46:34,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1305776369, now seen corresponding path program 1 times [2018-01-24 20:46:34,752 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:46:34,753 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:46:34,753 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:46:34,753 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:46:34,753 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:46:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:46:34,769 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:46:34,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:46:34,814 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:46:34,814 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 20:46:34,815 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2018-01-24 20:46:34,817 INFO L201 CegarAbsIntRunner]: [0], [2], [6], [10], [27], [32], [48], [53], [57], [61], [64], [66], [67], [71], [73], [74], [114], [117], [118], [119], [121], [122], [123], [131], [132], [133], [134], [135], [137], [141], [145], [149], [161], [162], [163] [2018-01-24 20:46:34,861 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 20:46:34,862 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