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_4_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 00:06:00,156 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 00:06:00,157 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 00:06:00,173 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 00:06:00,173 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 00:06:00,174 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 00:06:00,175 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 00:06:00,177 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 00:06:00,179 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 00:06:00,180 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 00:06:00,181 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 00:06:00,181 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 00:06:00,182 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 00:06:00,183 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 00:06:00,184 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 00:06:00,187 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 00:06:00,189 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 00:06:00,191 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 00:06:00,192 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 00:06:00,193 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 00:06:00,196 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 00:06:00,196 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 00:06:00,196 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 00:06:00,197 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 00:06:00,198 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 00:06:00,199 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 00:06:00,199 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 00:06:00,200 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 00:06:00,200 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 00:06:00,200 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 00:06:00,201 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 00:06:00,201 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 [2018-01-25 00:06:00,209 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 00:06:00,210 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 00:06:00,210 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 00:06:00,211 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 00:06:00,211 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 00:06:00,211 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 00:06:00,211 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 00:06:00,211 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 00:06:00,211 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 00:06:00,212 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 00:06:00,212 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 00:06:00,212 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 00:06:00,212 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 00:06:00,212 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 00:06:00,212 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 00:06:00,213 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 00:06:00,213 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 00:06:00,213 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 00:06:00,213 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 00:06:00,213 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 00:06:00,213 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 00:06:00,213 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 00:06:00,214 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 00:06:00,214 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 00:06:00,214 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 00:06:00,214 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 00:06:00,214 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 00:06:00,214 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 00:06:00,215 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 00:06:00,215 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 00:06:00,215 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 00:06:00,215 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 00:06:00,215 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 00:06:00,215 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 00:06:00,216 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 00:06:00,216 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 00:06:00,248 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 00:06:00,259 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 00:06:00,262 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 00:06:00,263 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 00:06:00,263 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 00:06:00,264 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test22_4_false-valid-memtrack_true-termination.i [2018-01-25 00:06:00,437 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 00:06:00,442 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 00:06:00,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 00:06:00,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 00:06:00,448 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 00:06:00,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:06:00" (1/1) ... [2018-01-25 00:06:00,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71d0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:06:00, skipping insertion in model container [2018-01-25 00:06:00,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:06:00" (1/1) ... [2018-01-25 00:06:00,464 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:06:00,510 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:06:00,643 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:06:00,669 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:06:00,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:06:00 WrapperNode [2018-01-25 00:06:00,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 00:06:00,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 00:06:00,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 00:06:00,684 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 00:06:00,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:06:00" (1/1) ... [2018-01-25 00:06:00,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:06:00" (1/1) ... [2018-01-25 00:06:00,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:06:00" (1/1) ... [2018-01-25 00:06:00,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:06:00" (1/1) ... [2018-01-25 00:06:00,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:06:00" (1/1) ... [2018-01-25 00:06:00,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:06:00" (1/1) ... [2018-01-25 00:06:00,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:06:00" (1/1) ... [2018-01-25 00:06:00,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 00:06:00,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 00:06:00,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 00:06:00,730 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 00:06:00,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:06:00" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 00:06:00,802 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 00:06:00,803 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 00:06:00,803 INFO L136 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2018-01-25 00:06:00,803 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-25 00:06:00,803 INFO L136 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2018-01-25 00:06:00,803 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2018-01-25 00:06:00,803 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2018-01-25 00:06:00,803 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2018-01-25 00:06:00,803 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2018-01-25 00:06:00,803 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2018-01-25 00:06:00,803 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2018-01-25 00:06:00,804 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2018-01-25 00:06:00,804 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2018-01-25 00:06:00,804 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2018-01-25 00:06:00,804 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2018-01-25 00:06:00,804 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2018-01-25 00:06:00,804 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2018-01-25 00:06:00,804 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2018-01-25 00:06:00,805 INFO L136 BoogieDeclarations]: Found implementation of procedure f_22_get [2018-01-25 00:06:00,805 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-25 00:06:00,805 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 00:06:00,805 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 00:06:00,805 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 00:06:00,805 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 00:06:00,806 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 00:06:00,806 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 00:06:00,806 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 00:06:00,806 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 00:06:00,806 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-25 00:06:00,807 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-25 00:06:00,807 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 00:06:00,807 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 00:06:00,807 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 00:06:00,807 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-25 00:06:00,807 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-25 00:06:00,807 INFO L128 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2018-01-25 00:06:00,808 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2018-01-25 00:06:00,808 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2018-01-25 00:06:00,808 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2018-01-25 00:06:00,808 INFO L128 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2018-01-25 00:06:00,808 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2018-01-25 00:06:00,808 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2018-01-25 00:06:00,809 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2018-01-25 00:06:00,809 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2018-01-25 00:06:00,809 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2018-01-25 00:06:00,809 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2018-01-25 00:06:00,809 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2018-01-25 00:06:00,809 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2018-01-25 00:06:00,809 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2018-01-25 00:06:00,810 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2018-01-25 00:06:00,810 INFO L128 BoogieDeclarations]: Found specification of procedure f_22_get [2018-01-25 00:06:00,810 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-25 00:06:00,810 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 00:06:00,810 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 00:06:00,810 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 00:06:01,067 WARN L455 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-01-25 00:06:01,227 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 00:06:01,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:06:01 BoogieIcfgContainer [2018-01-25 00:06:01,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 00:06:01,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 00:06:01,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 00:06:01,231 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 00:06:01,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 12:06:00" (1/3) ... [2018-01-25 00:06:01,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c313790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:06:01, skipping insertion in model container [2018-01-25 00:06:01,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:06:00" (2/3) ... [2018-01-25 00:06:01,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c313790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:06:01, skipping insertion in model container [2018-01-25 00:06:01,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:06:01" (3/3) ... [2018-01-25 00:06:01,235 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test22_4_false-valid-memtrack_true-termination.i [2018-01-25 00:06:01,241 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 00:06:01,249 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2018-01-25 00:06:01,289 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 00:06:01,290 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 00:06:01,290 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 00:06:01,290 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 00:06:01,290 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 00:06:01,290 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 00:06:01,290 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 00:06:01,290 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 00:06:01,291 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 00:06:01,310 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2018-01-25 00:06:01,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-25 00:06:01,315 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:06:01,316 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:06:01,316 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 00:06:01,320 INFO L82 PathProgramCache]: Analyzing trace with hash -367619766, now seen corresponding path program 1 times [2018-01-25 00:06:01,322 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:06:01,369 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:06:01,369 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:06:01,369 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:06:01,370 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:06:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:06:01,423 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:06:01,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:06:01,637 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:06:01,638 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:06:01,638 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:06:01,643 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:06:01,653 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:06:01,654 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:06:01,655 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 5 states. [2018-01-25 00:06:01,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:06:01,721 INFO L93 Difference]: Finished difference Result 280 states and 295 transitions. [2018-01-25 00:06:01,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:06:01,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-25 00:06:01,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:06:01,736 INFO L225 Difference]: With dead ends: 280 [2018-01-25 00:06:01,737 INFO L226 Difference]: Without dead ends: 149 [2018-01-25 00:06:01,741 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:06:01,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-01-25 00:06:01,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2018-01-25 00:06:01,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-25 00:06:01,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 155 transitions. [2018-01-25 00:06:01,787 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 155 transitions. Word has length 17 [2018-01-25 00:06:01,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:06:01,788 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 155 transitions. [2018-01-25 00:06:01,788 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:06:01,788 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 155 transitions. [2018-01-25 00:06:01,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-25 00:06:01,789 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:06:01,789 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:06:01,789 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 00:06:01,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1040907540, now seen corresponding path program 1 times [2018-01-25 00:06:01,790 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:06:01,791 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:06:01,791 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:06:01,792 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:06:01,792 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:06:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:06:01,814 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:06:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:06:01,888 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:06:01,889 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:06:01,889 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:06:01,890 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 00:06:01,891 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 00:06:01,891 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 00:06:01,891 INFO L87 Difference]: Start difference. First operand 147 states and 155 transitions. Second operand 6 states. [2018-01-25 00:06:02,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:06:02,106 INFO L93 Difference]: Finished difference Result 149 states and 157 transitions. [2018-01-25 00:06:02,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:06:02,107 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-01-25 00:06:02,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:06:02,109 INFO L225 Difference]: With dead ends: 149 [2018-01-25 00:06:02,109 INFO L226 Difference]: Without dead ends: 148 [2018-01-25 00:06:02,111 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:06:02,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-01-25 00:06:02,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2018-01-25 00:06:02,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-01-25 00:06:02,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2018-01-25 00:06:02,128 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 19 [2018-01-25 00:06:02,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:06:02,128 INFO L432 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2018-01-25 00:06:02,128 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 00:06:02,128 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2018-01-25 00:06:02,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-25 00:06:02,129 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:06:02,129 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:06:02,129 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 00:06:02,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1040907539, now seen corresponding path program 1 times [2018-01-25 00:06:02,130 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:06:02,131 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:06:02,132 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:06:02,132 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:06:02,132 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:06:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:06:02,156 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:06:02,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:06:02,421 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:06:02,422 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 00:06:02,422 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:06:02,422 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 00:06:02,422 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 00:06:02,423 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:06:02,423 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand 7 states. [2018-01-25 00:06:02,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:06:02,656 INFO L93 Difference]: Finished difference Result 148 states and 156 transitions. [2018-01-25 00:06:02,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 00:06:02,709 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-01-25 00:06:02,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:06:02,711 INFO L225 Difference]: With dead ends: 148 [2018-01-25 00:06:02,711 INFO L226 Difference]: Without dead ends: 147 [2018-01-25 00:06:02,712 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-01-25 00:06:02,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-01-25 00:06:02,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2018-01-25 00:06:02,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-01-25 00:06:02,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 153 transitions. [2018-01-25 00:06:02,722 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 153 transitions. Word has length 19 [2018-01-25 00:06:02,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:06:02,723 INFO L432 AbstractCegarLoop]: Abstraction has 145 states and 153 transitions. [2018-01-25 00:06:02,723 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 00:06:02,723 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 153 transitions. [2018-01-25 00:06:02,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 00:06:02,724 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:06:02,724 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] [2018-01-25 00:06:02,724 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 00:06:02,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1287954832, now seen corresponding path program 1 times [2018-01-25 00:06:02,724 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:06:02,725 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:06:02,725 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:06:02,725 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:06:02,725 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:06:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:06:02,744 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:06:02,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:06:02,861 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:06:02,861 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-25 00:06:02,861 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:06:02,862 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 00:06:02,862 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 00:06:02,862 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-01-25 00:06:02,863 INFO L87 Difference]: Start difference. First operand 145 states and 153 transitions. Second operand 9 states. [2018-01-25 00:06:02,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:06:02,978 INFO L93 Difference]: Finished difference Result 245 states and 257 transitions. [2018-01-25 00:06:02,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-25 00:06:02,978 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-01-25 00:06:02,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:06:02,981 INFO L225 Difference]: With dead ends: 245 [2018-01-25 00:06:02,981 INFO L226 Difference]: Without dead ends: 165 [2018-01-25 00:06:02,982 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-01-25 00:06:02,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-01-25 00:06:03,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 159. [2018-01-25 00:06:03,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-01-25 00:06:03,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 167 transitions. [2018-01-25 00:06:03,010 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 167 transitions. Word has length 29 [2018-01-25 00:06:03,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:06:03,010 INFO L432 AbstractCegarLoop]: Abstraction has 159 states and 167 transitions. [2018-01-25 00:06:03,010 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 00:06:03,011 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 167 transitions. [2018-01-25 00:06:03,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 00:06:03,012 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:06:03,012 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:06:03,012 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 00:06:03,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1025625474, now seen corresponding path program 1 times [2018-01-25 00:06:03,013 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:06:03,014 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:06:03,014 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:06:03,014 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:06:03,015 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:06:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:06:03,033 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:06:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:06:03,103 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:06:03,103 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-25 00:06:03,103 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:06:03,104 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 00:06:03,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 00:06:03,104 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-01-25 00:06:03,104 INFO L87 Difference]: Start difference. First operand 159 states and 167 transitions. Second operand 10 states. [2018-01-25 00:06:03,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:06:03,335 INFO L93 Difference]: Finished difference Result 159 states and 167 transitions. [2018-01-25 00:06:03,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-25 00:06:03,335 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-01-25 00:06:03,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:06:03,337 INFO L225 Difference]: With dead ends: 159 [2018-01-25 00:06:03,337 INFO L226 Difference]: Without dead ends: 158 [2018-01-25 00:06:03,337 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 [2018-01-25 00:06:03,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-01-25 00:06:03,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-01-25 00:06:03,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-01-25 00:06:03,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 166 transitions. [2018-01-25 00:06:03,349 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 166 transitions. Word has length 34 [2018-01-25 00:06:03,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:06:03,349 INFO L432 AbstractCegarLoop]: Abstraction has 158 states and 166 transitions. [2018-01-25 00:06:03,350 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 00:06:03,350 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 166 transitions. [2018-01-25 00:06:03,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 00:06:03,351 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:06:03,351 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:06:03,351 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 00:06:03,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1025625475, now seen corresponding path program 1 times [2018-01-25 00:06:03,352 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:06:03,352 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:06:03,353 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:06:03,353 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:06:03,353 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:06:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:06:03,369 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:06:03,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:06:03,403 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:06:03,403 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:06:03,403 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:06:03,403 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:06:03,404 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:06:03,404 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:06:03,404 INFO L87 Difference]: Start difference. First operand 158 states and 166 transitions. Second operand 4 states. [2018-01-25 00:06:03,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:06:03,428 INFO L93 Difference]: Finished difference Result 277 states and 291 transitions. [2018-01-25 00:06:03,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:06:03,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-01-25 00:06:03,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:06:03,431 INFO L225 Difference]: With dead ends: 277 [2018-01-25 00:06:03,431 INFO L226 Difference]: Without dead ends: 159 [2018-01-25 00:06:03,432 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:06:03,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-01-25 00:06:03,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-01-25 00:06:03,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-01-25 00:06:03,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 167 transitions. [2018-01-25 00:06:03,444 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 167 transitions. Word has length 34 [2018-01-25 00:06:03,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:06:03,444 INFO L432 AbstractCegarLoop]: Abstraction has 159 states and 167 transitions. [2018-01-25 00:06:03,444 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:06:03,445 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 167 transitions. [2018-01-25 00:06:03,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-25 00:06:03,446 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:06:03,446 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:06:03,446 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, ldv_atomic_sub_returnErr1RequiresViolation, ldv_atomic_sub_returnErr0RequiresViolation, ldv_atomic_sub_returnErr3RequiresViolation, ldv_atomic_sub_returnErr2RequiresViolation, ldv_atomic_add_returnErr0RequiresViolation, ldv_atomic_add_returnErr1RequiresViolation, ldv_atomic_add_returnErr2RequiresViolation, ldv_atomic_add_returnErr3RequiresViolation, ldv_kobject_cleanupErr4RequiresViolation, ldv_kobject_cleanupErr2RequiresViolation, ldv_kobject_cleanupErr5RequiresViolation, ldv_kobject_cleanupErr3RequiresViolation, ldv_kobject_cleanupErr0RequiresViolation, ldv_kobject_cleanupErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 00:06:03,446 INFO L82 PathProgramCache]: Analyzing trace with hash -553427227, now seen corresponding path program 1 times [2018-01-25 00:06:03,447 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:06:03,448 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:06:03,448 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:06:03,448 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:06:03,448 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:06:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:06:03,464 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:06:03,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:06:03,511 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 00:06:03,511 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 00:06:03,512 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2018-01-25 00:06:03,514 INFO L201 CegarAbsIntRunner]: [0], [2], [6], [10], [31], [36], [52], [58], [62], [66], [69], [71], [72], [76], [78], [79], [129], [132], [133], [134], [136], [137], [138], [160], [161], [162], [163], [164], [166], [172], [176], [182], [198], [199], [200] [2018-01-25 00:06:03,573 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 00:06:03,573 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