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_precise.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test22_3_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 23:58:58,294 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 23:58:58,295 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 23:58:58,308 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 23:58:58,308 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 23:58:58,309 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 23:58:58,310 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 23:58:58,312 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 23:58:58,314 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 23:58:58,315 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 23:58:58,315 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 23:58:58,315 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 23:58:58,316 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 23:58:58,317 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 23:58:58,318 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 23:58:58,321 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 23:58:58,323 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 23:58:58,325 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 23:58:58,326 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 23:58:58,328 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 23:58:58,330 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 23:58:58,331 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 23:58:58,331 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 23:58:58,332 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 23:58:58,333 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 23:58:58,334 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 23:58:58,334 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 23:58:58,335 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 23:58:58,335 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 23:58:58,335 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 23:58:58,336 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 23:58:58,336 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_precise.epf [2018-01-24 23:58:58,346 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 23:58:58,346 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 23:58:58,347 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 23:58:58,347 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 23:58:58,348 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 23:58:58,348 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 23:58:58,348 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 23:58:58,348 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 23:58:58,349 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 23:58:58,349 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 23:58:58,349 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 23:58:58,350 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 23:58:58,350 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 23:58:58,350 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 23:58:58,350 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 23:58:58,350 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 23:58:58,351 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 23:58:58,351 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 23:58:58,351 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 23:58:58,351 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 23:58:58,351 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 23:58:58,352 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 23:58:58,352 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 23:58:58,352 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 23:58:58,352 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 23:58:58,353 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 23:58:58,353 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 23:58:58,353 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 23:58:58,353 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 23:58:58,353 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 23:58:58,354 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 23:58:58,354 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 23:58:58,354 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 23:58:58,354 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 23:58:58,355 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 23:58:58,355 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 23:58:58,390 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 23:58:58,402 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 23:58:58,406 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 23:58:58,408 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 23:58:58,408 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 23:58:58,409 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test22_3_false-valid-deref.i [2018-01-24 23:58:58,599 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 23:58:58,605 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 23:58:58,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 23:58:58,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 23:58:58,611 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 23:58:58,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 11:58:58" (1/1) ... [2018-01-24 23:58:58,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@646490db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:58:58, skipping insertion in model container [2018-01-24 23:58:58,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 11:58:58" (1/1) ... [2018-01-24 23:58:58,633 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 23:58:58,683 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 23:58:58,807 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 23:58:58,832 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 23:58:58,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:58:58 WrapperNode [2018-01-24 23:58:58,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 23:58:58,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 23:58:58,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 23:58:58,844 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 23:58:58,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:58:58" (1/1) ... [2018-01-24 23:58:58,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:58:58" (1/1) ... [2018-01-24 23:58:58,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:58:58" (1/1) ... [2018-01-24 23:58:58,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:58:58" (1/1) ... [2018-01-24 23:58:58,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:58:58" (1/1) ... [2018-01-24 23:58:58,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:58:58" (1/1) ... [2018-01-24 23:58:58,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:58:58" (1/1) ... [2018-01-24 23:58:58,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 23:58:58,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 23:58:58,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 23:58:58,885 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 23:58:58,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:58:58" (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 23:58:58,936 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 23:58:58,937 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 23:58:58,937 INFO L136 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2018-01-24 23:58:58,937 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-24 23:58:58,937 INFO L136 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2018-01-24 23:58:58,937 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2018-01-24 23:58:58,937 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2018-01-24 23:58:58,937 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2018-01-24 23:58:58,938 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2018-01-24 23:58:58,938 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2018-01-24 23:58:58,938 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2018-01-24 23:58:58,938 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2018-01-24 23:58:58,938 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2018-01-24 23:58:58,938 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2018-01-24 23:58:58,939 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2018-01-24 23:58:58,939 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-24 23:58:58,939 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 23:58:58,939 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 23:58:58,939 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 23:58:58,939 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 23:58:58,940 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 23:58:58,940 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 23:58:58,940 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 23:58:58,940 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 23:58:58,940 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-24 23:58:58,941 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-24 23:58:58,941 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 23:58:58,941 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 23:58:58,941 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 23:58:58,941 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-24 23:58:58,941 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-24 23:58:58,942 INFO L128 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2018-01-24 23:58:58,942 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2018-01-24 23:58:58,942 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2018-01-24 23:58:58,942 INFO L128 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2018-01-24 23:58:58,942 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2018-01-24 23:58:58,942 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2018-01-24 23:58:58,943 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2018-01-24 23:58:58,943 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2018-01-24 23:58:58,943 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2018-01-24 23:58:58,943 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2018-01-24 23:58:58,943 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2018-01-24 23:58:58,943 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2018-01-24 23:58:58,944 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-24 23:58:58,944 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 23:58:58,944 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 23:58:58,944 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 23:58:59,196 WARN L455 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-01-24 23:58:59,378 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 23:58:59,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 11:58:59 BoogieIcfgContainer [2018-01-24 23:58:59,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 23:58:59,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 23:58:59,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 23:58:59,382 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 23:58:59,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 11:58:58" (1/3) ... [2018-01-24 23:58:59,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3305869e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 11:58:59, skipping insertion in model container [2018-01-24 23:58:59,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:58:58" (2/3) ... [2018-01-24 23:58:59,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3305869e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 11:58:59, skipping insertion in model container [2018-01-24 23:58:59,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 11:58:59" (3/3) ... [2018-01-24 23:58:59,385 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test22_3_false-valid-deref.i [2018-01-24 23:58:59,392 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 23:58:59,399 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2018-01-24 23:58:59,439 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 23:58:59,440 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 23:58:59,440 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 23:58:59,440 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 23:58:59,440 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 23:58:59,440 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 23:58:59,440 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 23:58:59,440 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 23:58:59,441 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 23:58:59,461 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states. [2018-01-24 23:58:59,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 23:58:59,467 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:58:59,468 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 23:58:59,468 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 23:58:59,472 INFO L82 PathProgramCache]: Analyzing trace with hash 556227080, now seen corresponding path program 1 times [2018-01-24 23:58:59,474 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:58:59,522 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:58:59,522 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:58:59,522 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:58:59,523 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:58:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:58:59,576 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:58:59,698 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 23:58:59,793 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:58:59,794 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 23:58:59,794 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:58:59,797 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 23:58:59,811 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 23:58:59,812 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 23:58:59,815 INFO L87 Difference]: Start difference. First operand 119 states. Second operand 5 states. [2018-01-24 23:58:59,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:58:59,882 INFO L93 Difference]: Finished difference Result 226 states and 241 transitions. [2018-01-24 23:58:59,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 23:58:59,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-24 23:58:59,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:58:59,897 INFO L225 Difference]: With dead ends: 226 [2018-01-24 23:58:59,897 INFO L226 Difference]: Without dead ends: 122 [2018-01-24 23:58:59,902 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 23:58:59,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-01-24 23:58:59,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2018-01-24 23:58:59,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-01-24 23:58:59,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2018-01-24 23:58:59,940 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 17 [2018-01-24 23:58:59,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:58:59,941 INFO L432 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2018-01-24 23:58:59,941 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 23:58:59,941 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2018-01-24 23:58:59,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-24 23:58:59,941 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:58:59,942 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 23:58:59,942 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 23:58:59,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1895274134, now seen corresponding path program 1 times [2018-01-24 23:58:59,942 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:58:59,943 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:58:59,943 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:58:59,944 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:58:59,944 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:58:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:58:59,966 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:59:00,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 23:59:00,045 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:59:00,045 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 23:59:00,045 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:59:00,047 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 23:59:00,047 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 23:59:00,047 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 23:59:00,048 INFO L87 Difference]: Start difference. First operand 120 states and 128 transitions. Second operand 6 states. [2018-01-24 23:59:00,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:59:00,235 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2018-01-24 23:59:00,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 23:59:00,236 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-01-24 23:59:00,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:59:00,238 INFO L225 Difference]: With dead ends: 122 [2018-01-24 23:59:00,238 INFO L226 Difference]: Without dead ends: 121 [2018-01-24 23:59:00,238 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 23:59:00,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-01-24 23:59:00,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2018-01-24 23:59:00,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-01-24 23:59:00,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2018-01-24 23:59:00,249 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 19 [2018-01-24 23:59:00,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:59:00,249 INFO L432 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2018-01-24 23:59:00,249 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 23:59:00,249 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2018-01-24 23:59:00,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-24 23:59:00,250 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:59:00,250 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 23:59:00,250 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 23:59:00,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1895274133, now seen corresponding path program 1 times [2018-01-24 23:59:00,250 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:59:00,252 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:59:00,252 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:59:00,252 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:59:00,253 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:59:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:59:00,272 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:59:00,580 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 23:59:00,581 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:59:00,581 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 23:59:00,581 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:59:00,582 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 23:59:00,582 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 23:59:00,582 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-24 23:59:00,582 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand 7 states. [2018-01-24 23:59:00,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:59:00,812 INFO L93 Difference]: Finished difference Result 121 states and 129 transitions. [2018-01-24 23:59:00,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 23:59:00,812 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-01-24 23:59:00,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:59:00,815 INFO L225 Difference]: With dead ends: 121 [2018-01-24 23:59:00,815 INFO L226 Difference]: Without dead ends: 120 [2018-01-24 23:59:00,815 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-01-24 23:59:00,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-01-24 23:59:00,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2018-01-24 23:59:00,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-01-24 23:59:00,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 126 transitions. [2018-01-24 23:59:00,829 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 126 transitions. Word has length 19 [2018-01-24 23:59:00,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:59:00,830 INFO L432 AbstractCegarLoop]: Abstraction has 118 states and 126 transitions. [2018-01-24 23:59:00,830 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 23:59:00,830 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 126 transitions. [2018-01-24 23:59:00,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 23:59:00,831 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:59:00,832 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 23:59:00,832 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 23:59:00,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1715794329, now seen corresponding path program 1 times [2018-01-24 23:59:00,832 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:59:00,834 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:59:00,834 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:59:00,834 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:59:00,834 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:59:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:59:00,859 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:59:00,959 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 23:59:00,959 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:59:00,959 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 23:59:00,959 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:59:00,960 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 23:59:00,960 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 23:59:00,960 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-24 23:59:00,960 INFO L87 Difference]: Start difference. First operand 118 states and 126 transitions. Second operand 7 states. [2018-01-24 23:59:01,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:59:01,016 INFO L93 Difference]: Finished difference Result 188 states and 203 transitions. [2018-01-24 23:59:01,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 23:59:01,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2018-01-24 23:59:01,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:59:01,019 INFO L225 Difference]: With dead ends: 188 [2018-01-24 23:59:01,019 INFO L226 Difference]: Without dead ends: 131 [2018-01-24 23:59:01,020 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 23:59:01,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-01-24 23:59:01,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2018-01-24 23:59:01,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-01-24 23:59:01,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 136 transitions. [2018-01-24 23:59:01,034 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 136 transitions. Word has length 29 [2018-01-24 23:59:01,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:59:01,035 INFO L432 AbstractCegarLoop]: Abstraction has 127 states and 136 transitions. [2018-01-24 23:59:01,035 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 23:59:01,035 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 136 transitions. [2018-01-24 23:59:01,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 23:59:01,036 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:59:01,036 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 23:59:01,036 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 23:59:01,036 INFO L82 PathProgramCache]: Analyzing trace with hash -785661208, now seen corresponding path program 1 times [2018-01-24 23:59:01,036 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:59:01,037 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:59:01,038 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:59:01,038 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:59:01,038 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:59:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:59:01,058 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:59:01,179 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 23:59:01,179 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:59:01,179 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 23:59:01,180 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:59:01,180 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 23:59:01,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 23:59:01,181 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-01-24 23:59:01,181 INFO L87 Difference]: Start difference. First operand 127 states and 136 transitions. Second operand 10 states. [2018-01-24 23:59:01,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:59:01,407 INFO L93 Difference]: Finished difference Result 127 states and 136 transitions. [2018-01-24 23:59:01,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 23:59:01,408 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-01-24 23:59:01,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:59:01,409 INFO L225 Difference]: With dead ends: 127 [2018-01-24 23:59:01,409 INFO L226 Difference]: Without dead ends: 126 [2018-01-24 23:59:01,410 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2018-01-24 23:59:01,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-01-24 23:59:01,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-01-24 23:59:01,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-01-24 23:59:01,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 135 transitions. [2018-01-24 23:59:01,423 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 135 transitions. Word has length 34 [2018-01-24 23:59:01,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:59:01,423 INFO L432 AbstractCegarLoop]: Abstraction has 126 states and 135 transitions. [2018-01-24 23:59:01,423 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 23:59:01,424 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 135 transitions. [2018-01-24 23:59:01,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 23:59:01,425 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:59:01,425 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 23:59:01,425 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 23:59:01,425 INFO L82 PathProgramCache]: Analyzing trace with hash -785661207, now seen corresponding path program 1 times [2018-01-24 23:59:01,425 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:59:01,426 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:59:01,427 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:59:01,427 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:59:01,427 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:59:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:59:01,442 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:59:01,469 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 23:59:01,469 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:59:01,469 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 23:59:01,470 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:59:01,470 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:59:01,470 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:59:01,470 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:59:01,470 INFO L87 Difference]: Start difference. First operand 126 states and 135 transitions. Second operand 4 states. [2018-01-24 23:59:01,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:59:01,489 INFO L93 Difference]: Finished difference Result 218 states and 233 transitions. [2018-01-24 23:59:01,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 23:59:01,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-01-24 23:59:01,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:59:01,492 INFO L225 Difference]: With dead ends: 218 [2018-01-24 23:59:01,492 INFO L226 Difference]: Without dead ends: 127 [2018-01-24 23:59:01,493 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 23:59:01,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-01-24 23:59:01,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-01-24 23:59:01,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-01-24 23:59:01,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 136 transitions. [2018-01-24 23:59:01,506 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 136 transitions. Word has length 34 [2018-01-24 23:59:01,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:59:01,507 INFO L432 AbstractCegarLoop]: Abstraction has 127 states and 136 transitions. [2018-01-24 23:59:01,507 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:59:01,507 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 136 transitions. [2018-01-24 23:59:01,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 23:59:01,508 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:59:01,509 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 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 23:59:01,509 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 23:59:01,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1322241719, now seen corresponding path program 1 times [2018-01-24 23:59:01,509 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:59:01,510 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:59:01,510 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:59:01,510 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:59:01,511 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:59:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:59:01,521 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:59:01,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-24 23:59:01,548 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:59:01,548 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 23:59:01,548 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:59:01,548 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 23:59:01,548 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 23:59:01,548 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 23:59:01,549 INFO L87 Difference]: Start difference. First operand 127 states and 136 transitions. Second operand 3 states. [2018-01-24 23:59:01,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:59:01,746 INFO L93 Difference]: Finished difference Result 144 states and 155 transitions. [2018-01-24 23:59:01,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 23:59:01,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2018-01-24 23:59:01,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:59:01,748 INFO L225 Difference]: With dead ends: 144 [2018-01-24 23:59:01,748 INFO L226 Difference]: Without dead ends: 131 [2018-01-24 23:59:01,749 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 23:59:01,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-01-24 23:59:01,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 123. [2018-01-24 23:59:01,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-01-24 23:59:01,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 131 transitions. [2018-01-24 23:59:01,761 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 131 transitions. Word has length 32 [2018-01-24 23:59:01,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:59:01,762 INFO L432 AbstractCegarLoop]: Abstraction has 123 states and 131 transitions. [2018-01-24 23:59:01,762 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 23:59:01,762 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 131 transitions. [2018-01-24 23:59:01,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-24 23:59:01,763 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:59:01,763 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 23:59:01,763 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 23:59:01,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1082750419, now seen corresponding path program 1 times [2018-01-24 23:59:01,763 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:59:01,764 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:59:01,764 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:59:01,764 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:59:01,764 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:59:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:59:01,781 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:59:01,852 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 23:59:01,852 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 23:59:01,852 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 23:59:01,853 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2018-01-24 23:59:01,855 INFO L201 CegarAbsIntRunner]: [0], [2], [6], [10], [27], [32], [48], [54], [58], [62], [65], [67], [68], [72], [74], [75], [115], [118], [119], [120], [122], [123], [124], [132], [133], [134], [135], [136], [138], [142], [146], [152], [164], [165], [166] [2018-01-24 23:59:01,917 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 23:59:01,918 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