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_3_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:35:00,775 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:35:00,777 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:35:00,790 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:35:00,791 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:35:00,792 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:35:00,793 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:35:00,795 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:35:00,797 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:35:00,798 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:35:00,799 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:35:00,799 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:35:00,799 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:35:00,801 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:35:00,802 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:35:00,804 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:35:00,807 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:35:00,809 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:35:00,810 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:35:00,811 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:35:00,814 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 20:35:00,814 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 20:35:00,814 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 20:35:00,815 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 20:35:00,816 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 20:35:00,818 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 20:35:00,818 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 20:35:00,819 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 20:35:00,819 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 20:35:00,819 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:35:00,820 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:35:00,820 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 20:35:00,830 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:35:00,830 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:35:00,831 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:35:00,831 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:35:00,832 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:35:00,832 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:35:00,832 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:35:00,832 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:35:00,832 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:35:00,833 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:35:00,833 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:35:00,833 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:35:00,834 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:35:00,834 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:35:00,834 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:35:00,834 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:35:00,834 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:35:00,835 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:35:00,835 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:35:00,835 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:35:00,835 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:35:00,836 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:35:00,836 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:35:00,836 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:35:00,836 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:35:00,836 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:35:00,837 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:35:00,837 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:35:00,837 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:35:00,837 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:35:00,837 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:35:00,838 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:35:00,838 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:35:00,838 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:35:00,838 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:35:00,839 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:35:00,839 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:35:00,874 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:35:00,888 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:35:00,893 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:35:00,894 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:35:00,895 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:35:00,896 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test22_3_false-valid-deref.i [2018-01-24 20:35:01,077 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:35:01,083 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:35:01,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:35:01,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:35:01,091 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:35:01,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:35:01" (1/1) ... [2018-01-24 20:35:01,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d434187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:35:01, skipping insertion in model container [2018-01-24 20:35:01,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:35:01" (1/1) ... [2018-01-24 20:35:01,115 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:35:01,167 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:35:01,289 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:35:01,312 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:35:01,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:35:01 WrapperNode [2018-01-24 20:35:01,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:35:01,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:35:01,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:35:01,326 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:35:01,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:35:01" (1/1) ... [2018-01-24 20:35:01,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:35:01" (1/1) ... [2018-01-24 20:35:01,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:35:01" (1/1) ... [2018-01-24 20:35:01,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:35:01" (1/1) ... [2018-01-24 20:35:01,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:35:01" (1/1) ... [2018-01-24 20:35:01,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:35:01" (1/1) ... [2018-01-24 20:35:01,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:35:01" (1/1) ... [2018-01-24 20:35:01,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:35:01,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:35:01,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:35:01,370 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:35:01,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:35:01" (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 20:35:01,416 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:35:01,416 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:35:01,416 INFO L136 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2018-01-24 20:35:01,416 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-24 20:35:01,417 INFO L136 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2018-01-24 20:35:01,417 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2018-01-24 20:35:01,417 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2018-01-24 20:35:01,417 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2018-01-24 20:35:01,417 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2018-01-24 20:35:01,417 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2018-01-24 20:35:01,417 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2018-01-24 20:35:01,417 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2018-01-24 20:35:01,417 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2018-01-24 20:35:01,417 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2018-01-24 20:35:01,418 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2018-01-24 20:35:01,418 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-24 20:35:01,418 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:35:01,418 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 20:35:01,418 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 20:35:01,418 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 20:35:01,419 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 20:35:01,419 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:35:01,419 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:35:01,419 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:35:01,419 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-24 20:35:01,420 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-24 20:35:01,420 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:35:01,420 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 20:35:01,420 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:35:01,420 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-24 20:35:01,420 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-24 20:35:01,421 INFO L128 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2018-01-24 20:35:01,421 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2018-01-24 20:35:01,421 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2018-01-24 20:35:01,421 INFO L128 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2018-01-24 20:35:01,421 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2018-01-24 20:35:01,421 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2018-01-24 20:35:01,421 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2018-01-24 20:35:01,422 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2018-01-24 20:35:01,422 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2018-01-24 20:35:01,422 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2018-01-24 20:35:01,422 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2018-01-24 20:35:01,422 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2018-01-24 20:35:01,422 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-24 20:35:01,422 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:35:01,423 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:35:01,423 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:35:01,660 WARN L455 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-01-24 20:35:01,804 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:35:01,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:35:01 BoogieIcfgContainer [2018-01-24 20:35:01,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:35:01,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:35:01,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:35:01,809 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:35:01,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:35:01" (1/3) ... [2018-01-24 20:35:01,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd413f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:35:01, skipping insertion in model container [2018-01-24 20:35:01,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:35:01" (2/3) ... [2018-01-24 20:35:01,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd413f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:35:01, skipping insertion in model container [2018-01-24 20:35:01,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:35:01" (3/3) ... [2018-01-24 20:35:01,813 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test22_3_false-valid-deref.i [2018-01-24 20:35:01,823 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:35:01,832 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2018-01-24 20:35:01,885 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:35:01,885 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:35:01,885 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:35:01,886 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:35:01,886 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:35:01,886 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:35:01,886 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:35:01,886 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:35:01,887 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:35:01,911 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states. [2018-01-24 20:35:01,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 20:35:01,918 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:35:01,919 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 20:35:01,919 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 20:35:01,925 INFO L82 PathProgramCache]: Analyzing trace with hash 556227080, now seen corresponding path program 1 times [2018-01-24 20:35:01,928 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:35:01,980 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:35:01,980 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:35:01,980 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:35:01,980 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:35:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:35:02,036 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:35:02,185 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 20:35:02,187 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:35:02,187 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:35:02,187 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:35:02,270 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:35:02,282 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:35:02,283 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:35:02,285 INFO L87 Difference]: Start difference. First operand 119 states. Second operand 5 states. [2018-01-24 20:35:02,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:35:02,359 INFO L93 Difference]: Finished difference Result 226 states and 241 transitions. [2018-01-24 20:35:02,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:35:02,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-24 20:35:02,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:35:02,379 INFO L225 Difference]: With dead ends: 226 [2018-01-24 20:35:02,379 INFO L226 Difference]: Without dead ends: 122 [2018-01-24 20:35:02,383 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 20:35:02,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-01-24 20:35:02,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2018-01-24 20:35:02,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-01-24 20:35:02,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2018-01-24 20:35:02,427 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 17 [2018-01-24 20:35:02,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:35:02,427 INFO L432 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2018-01-24 20:35:02,427 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:35:02,427 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2018-01-24 20:35:02,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-24 20:35:02,428 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:35:02,428 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 20:35:02,428 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 20:35:02,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1895274134, now seen corresponding path program 1 times [2018-01-24 20:35:02,429 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:35:02,430 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:35:02,430 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:35:02,430 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:35:02,431 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:35:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:35:02,453 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:35:02,528 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 20:35:02,528 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:35:02,528 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:35:02,528 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:35:02,534 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 20:35:02,534 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 20:35:02,534 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:35:02,534 INFO L87 Difference]: Start difference. First operand 120 states and 128 transitions. Second operand 6 states. [2018-01-24 20:35:02,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:35:02,741 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2018-01-24 20:35:02,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:35:02,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-01-24 20:35:02,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:35:02,744 INFO L225 Difference]: With dead ends: 122 [2018-01-24 20:35:02,744 INFO L226 Difference]: Without dead ends: 121 [2018-01-24 20:35:02,745 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 20:35:02,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-01-24 20:35:02,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2018-01-24 20:35:02,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-01-24 20:35:02,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2018-01-24 20:35:02,760 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 19 [2018-01-24 20:35:02,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:35:02,761 INFO L432 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2018-01-24 20:35:02,761 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 20:35:02,761 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2018-01-24 20:35:02,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-24 20:35:02,762 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:35:02,762 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 20:35:02,762 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 20:35:02,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1895274133, now seen corresponding path program 1 times [2018-01-24 20:35:02,762 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:35:02,764 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:35:02,764 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:35:02,764 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:35:02,764 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:35:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:35:02,793 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:35:03,018 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 20:35:03,019 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:35:03,019 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:35:03,019 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:35:03,020 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 20:35:03,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 20:35:03,020 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:35:03,020 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand 7 states. [2018-01-24 20:35:03,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:35:03,285 INFO L93 Difference]: Finished difference Result 121 states and 129 transitions. [2018-01-24 20:35:03,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 20:35:03,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-01-24 20:35:03,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:35:03,287 INFO L225 Difference]: With dead ends: 121 [2018-01-24 20:35:03,287 INFO L226 Difference]: Without dead ends: 120 [2018-01-24 20:35:03,287 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-01-24 20:35:03,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-01-24 20:35:03,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2018-01-24 20:35:03,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-01-24 20:35:03,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 126 transitions. [2018-01-24 20:35:03,298 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 126 transitions. Word has length 19 [2018-01-24 20:35:03,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:35:03,299 INFO L432 AbstractCegarLoop]: Abstraction has 118 states and 126 transitions. [2018-01-24 20:35:03,299 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 20:35:03,299 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 126 transitions. [2018-01-24 20:35:03,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 20:35:03,301 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:35:03,301 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 20:35:03,301 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 20:35:03,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1715794329, now seen corresponding path program 1 times [2018-01-24 20:35:03,301 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:35:03,302 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:35:03,303 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:35:03,303 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:35:03,303 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:35:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:35:03,328 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:35:03,429 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 20:35:03,429 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:35:03,429 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 20:35:03,429 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:35:03,430 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 20:35:03,430 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 20:35:03,430 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:35:03,431 INFO L87 Difference]: Start difference. First operand 118 states and 126 transitions. Second operand 7 states. [2018-01-24 20:35:03,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:35:03,518 INFO L93 Difference]: Finished difference Result 188 states and 203 transitions. [2018-01-24 20:35:03,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 20:35:03,557 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2018-01-24 20:35:03,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:35:03,560 INFO L225 Difference]: With dead ends: 188 [2018-01-24 20:35:03,560 INFO L226 Difference]: Without dead ends: 131 [2018-01-24 20:35:03,561 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 20:35:03,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-01-24 20:35:03,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2018-01-24 20:35:03,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-01-24 20:35:03,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 136 transitions. [2018-01-24 20:35:03,577 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 136 transitions. Word has length 29 [2018-01-24 20:35:03,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:35:03,578 INFO L432 AbstractCegarLoop]: Abstraction has 127 states and 136 transitions. [2018-01-24 20:35:03,578 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 20:35:03,578 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 136 transitions. [2018-01-24 20:35:03,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 20:35:03,579 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:35:03,579 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 20:35:03,580 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 20:35:03,580 INFO L82 PathProgramCache]: Analyzing trace with hash -785661208, now seen corresponding path program 1 times [2018-01-24 20:35:03,580 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:35:03,582 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:35:03,582 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:35:03,582 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:35:03,582 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:35:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:35:03,604 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:35:03,714 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 20:35:03,714 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:35:03,715 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 20:35:03,715 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:35:03,721 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 20:35:03,721 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 20:35:03,721 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-01-24 20:35:03,722 INFO L87 Difference]: Start difference. First operand 127 states and 136 transitions. Second operand 10 states. [2018-01-24 20:35:03,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:35:03,935 INFO L93 Difference]: Finished difference Result 127 states and 136 transitions. [2018-01-24 20:35:03,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 20:35:03,935 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-01-24 20:35:03,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:35:03,937 INFO L225 Difference]: With dead ends: 127 [2018-01-24 20:35:03,937 INFO L226 Difference]: Without dead ends: 126 [2018-01-24 20:35:03,938 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2018-01-24 20:35:03,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-01-24 20:35:03,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-01-24 20:35:03,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-01-24 20:35:03,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 135 transitions. [2018-01-24 20:35:03,950 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 135 transitions. Word has length 34 [2018-01-24 20:35:03,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:35:03,950 INFO L432 AbstractCegarLoop]: Abstraction has 126 states and 135 transitions. [2018-01-24 20:35:03,950 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 20:35:03,950 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 135 transitions. [2018-01-24 20:35:03,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 20:35:03,951 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:35:03,951 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 20:35:03,952 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 20:35:03,952 INFO L82 PathProgramCache]: Analyzing trace with hash -785661207, now seen corresponding path program 1 times [2018-01-24 20:35:03,952 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:35:03,953 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:35:03,953 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:35:03,953 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:35:03,953 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:35:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:35:03,968 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:35:04,015 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 20:35:04,015 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:35:04,015 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:35:04,015 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:35:04,016 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:35:04,016 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:35:04,016 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:35:04,016 INFO L87 Difference]: Start difference. First operand 126 states and 135 transitions. Second operand 4 states. [2018-01-24 20:35:04,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:35:04,047 INFO L93 Difference]: Finished difference Result 218 states and 233 transitions. [2018-01-24 20:35:04,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:35:04,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-01-24 20:35:04,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:35:04,049 INFO L225 Difference]: With dead ends: 218 [2018-01-24 20:35:04,049 INFO L226 Difference]: Without dead ends: 127 [2018-01-24 20:35:04,050 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 20:35:04,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-01-24 20:35:04,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-01-24 20:35:04,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-01-24 20:35:04,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 136 transitions. [2018-01-24 20:35:04,062 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 136 transitions. Word has length 34 [2018-01-24 20:35:04,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:35:04,062 INFO L432 AbstractCegarLoop]: Abstraction has 127 states and 136 transitions. [2018-01-24 20:35:04,063 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:35:04,063 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 136 transitions. [2018-01-24 20:35:04,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 20:35:04,064 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:35:04,064 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 20:35:04,064 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 20:35:04,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1322241719, now seen corresponding path program 1 times [2018-01-24 20:35:04,065 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:35:04,066 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:35:04,066 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:35:04,066 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:35:04,066 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:35:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:35:04,077 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:35:04,107 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 20:35:04,107 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:35:04,108 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 20:35:04,108 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:35:04,108 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 20:35:04,108 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 20:35:04,108 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:35:04,109 INFO L87 Difference]: Start difference. First operand 127 states and 136 transitions. Second operand 3 states. [2018-01-24 20:35:04,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:35:04,231 INFO L93 Difference]: Finished difference Result 144 states and 155 transitions. [2018-01-24 20:35:04,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 20:35:04,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2018-01-24 20:35:04,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:35:04,233 INFO L225 Difference]: With dead ends: 144 [2018-01-24 20:35:04,233 INFO L226 Difference]: Without dead ends: 131 [2018-01-24 20:35:04,234 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 20:35:04,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-01-24 20:35:04,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 123. [2018-01-24 20:35:04,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-01-24 20:35:04,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 131 transitions. [2018-01-24 20:35:04,248 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 131 transitions. Word has length 32 [2018-01-24 20:35:04,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:35:04,248 INFO L432 AbstractCegarLoop]: Abstraction has 123 states and 131 transitions. [2018-01-24 20:35:04,248 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 20:35:04,248 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 131 transitions. [2018-01-24 20:35:04,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-24 20:35:04,250 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:35:04,250 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:35:04,250 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 20:35:04,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1082750419, now seen corresponding path program 1 times [2018-01-24 20:35:04,251 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:35:04,252 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:35:04,252 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:35:04,252 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:35:04,252 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:35:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:35:04,273 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:35:04,348 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 20:35:04,349 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:35:04,349 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 20:35:04,350 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2018-01-24 20:35:04,352 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 20:35:04,399 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 20:35:04,400 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