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_2_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 00:05:15,062 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 00:05:15,064 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 00:05:15,078 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 00:05:15,078 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 00:05:15,079 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 00:05:15,080 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 00:05:15,082 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 00:05:15,083 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 00:05:15,084 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 00:05:15,084 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 00:05:15,084 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 00:05:15,085 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 00:05:15,086 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 00:05:15,087 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 00:05:15,089 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 00:05:15,091 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 00:05:15,094 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 00:05:15,095 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 00:05:15,096 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 00:05:15,098 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 00:05:15,099 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 00:05:15,099 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 00:05:15,100 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 00:05:15,101 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 00:05:15,102 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 00:05:15,103 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 00:05:15,103 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 00:05:15,103 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 00:05:15,104 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 00:05:15,104 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 00:05:15,105 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 00:05:15,115 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 00:05:15,115 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 00:05:15,116 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 00:05:15,116 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 00:05:15,116 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 00:05:15,117 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 00:05:15,117 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 00:05:15,117 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 00:05:15,118 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 00:05:15,118 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 00:05:15,118 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 00:05:15,118 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 00:05:15,118 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 00:05:15,119 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 00:05:15,119 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 00:05:15,119 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 00:05:15,119 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 00:05:15,119 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 00:05:15,120 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 00:05:15,120 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 00:05:15,120 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 00:05:15,120 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 00:05:15,120 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 00:05:15,121 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 00:05:15,121 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 00:05:15,121 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 00:05:15,121 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 00:05:15,122 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 00:05:15,122 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 00:05:15,122 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 00:05:15,122 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 00:05:15,122 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 00:05:15,122 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 00:05:15,123 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 00:05:15,124 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 00:05:15,124 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 00:05:15,159 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 00:05:15,172 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 00:05:15,177 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 00:05:15,178 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 00:05:15,179 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 00:05:15,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test22_2_false-valid-memtrack_true-termination.i [2018-01-25 00:05:15,380 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 00:05:15,386 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 00:05:15,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 00:05:15,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 00:05:15,393 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 00:05:15,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:05:15" (1/1) ... [2018-01-25 00:05:15,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@105626bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:05:15, skipping insertion in model container [2018-01-25 00:05:15,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:05:15" (1/1) ... [2018-01-25 00:05:15,418 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:05:15,471 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:05:15,581 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:05:15,602 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:05:15,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:05:15 WrapperNode [2018-01-25 00:05:15,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 00:05:15,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 00:05:15,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 00:05:15,611 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 00:05:15,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:05:15" (1/1) ... [2018-01-25 00:05:15,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:05:15" (1/1) ... [2018-01-25 00:05:15,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:05:15" (1/1) ... [2018-01-25 00:05:15,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:05:15" (1/1) ... [2018-01-25 00:05:15,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:05:15" (1/1) ... [2018-01-25 00:05:15,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:05:15" (1/1) ... [2018-01-25 00:05:15,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:05:15" (1/1) ... [2018-01-25 00:05:15,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 00:05:15,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 00:05:15,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 00:05:15,643 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 00:05:15,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:05:15" (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 00:05:15,693 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 00:05:15,693 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 00:05:15,693 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-25 00:05:15,694 INFO L136 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2018-01-25 00:05:15,694 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2018-01-25 00:05:15,694 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2018-01-25 00:05:15,694 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2018-01-25 00:05:15,694 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2018-01-25 00:05:15,694 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-25 00:05:15,694 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 00:05:15,694 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 00:05:15,694 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 00:05:15,694 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 00:05:15,695 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 00:05:15,695 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 00:05:15,695 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 00:05:15,695 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 00:05:15,695 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-25 00:05:15,695 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-25 00:05:15,695 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 00:05:15,696 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 00:05:15,696 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-25 00:05:15,696 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-25 00:05:15,696 INFO L128 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2018-01-25 00:05:15,696 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2018-01-25 00:05:15,697 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2018-01-25 00:05:15,697 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2018-01-25 00:05:15,697 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2018-01-25 00:05:15,697 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-25 00:05:15,697 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 00:05:15,697 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 00:05:15,698 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 00:05:15,826 WARN L455 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-01-25 00:05:15,918 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 00:05:15,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:05:15 BoogieIcfgContainer [2018-01-25 00:05:15,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 00:05:15,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 00:05:15,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 00:05:15,922 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 00:05:15,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 12:05:15" (1/3) ... [2018-01-25 00:05:15,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3994b6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:05:15, skipping insertion in model container [2018-01-25 00:05:15,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:05:15" (2/3) ... [2018-01-25 00:05:15,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3994b6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:05:15, skipping insertion in model container [2018-01-25 00:05:15,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:05:15" (3/3) ... [2018-01-25 00:05:15,926 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test22_2_false-valid-memtrack_true-termination.i [2018-01-25 00:05:15,935 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 00:05:15,943 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-01-25 00:05:15,982 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 00:05:15,982 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 00:05:15,982 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 00:05:15,982 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 00:05:15,983 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 00:05:15,983 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 00:05:15,983 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 00:05:15,983 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 00:05:15,984 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 00:05:16,004 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2018-01-25 00:05:16,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-25 00:05:16,009 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:05:16,010 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 00:05:16,010 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 00:05:16,014 INFO L82 PathProgramCache]: Analyzing trace with hash 13572496, now seen corresponding path program 1 times [2018-01-25 00:05:16,015 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:05:16,063 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:05:16,063 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:05:16,063 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:05:16,063 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:05:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:05:16,121 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:05:16,272 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 00:05:16,275 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:05:16,275 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:05:16,275 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:05:16,278 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:05:16,370 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:05:16,371 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:05:16,374 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 5 states. [2018-01-25 00:05:16,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:05:16,423 INFO L93 Difference]: Finished difference Result 118 states and 125 transitions. [2018-01-25 00:05:16,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:05:16,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-25 00:05:16,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:05:16,435 INFO L225 Difference]: With dead ends: 118 [2018-01-25 00:05:16,435 INFO L226 Difference]: Without dead ends: 68 [2018-01-25 00:05:16,438 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 00:05:16,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-01-25 00:05:16,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2018-01-25 00:05:16,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-01-25 00:05:16,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2018-01-25 00:05:16,478 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 17 [2018-01-25 00:05:16,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:05:16,479 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2018-01-25 00:05:16,479 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:05:16,479 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2018-01-25 00:05:16,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-25 00:05:16,480 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:05:16,481 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 00:05:16,481 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 00:05:16,481 INFO L82 PathProgramCache]: Analyzing trace with hash 64872882, now seen corresponding path program 1 times [2018-01-25 00:05:16,481 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:05:16,483 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:05:16,483 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:05:16,483 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:05:16,483 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:05:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:05:16,504 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:05:16,600 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 00:05:16,600 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:05:16,600 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:05:16,600 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:05:16,602 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 00:05:16,602 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 00:05:16,602 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 00:05:16,602 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 6 states. [2018-01-25 00:05:16,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:05:16,734 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2018-01-25 00:05:16,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:05:16,734 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-01-25 00:05:16,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:05:16,736 INFO L225 Difference]: With dead ends: 68 [2018-01-25 00:05:16,736 INFO L226 Difference]: Without dead ends: 67 [2018-01-25 00:05:16,737 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 00:05:16,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-01-25 00:05:16,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2018-01-25 00:05:16,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-01-25 00:05:16,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2018-01-25 00:05:16,744 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 19 [2018-01-25 00:05:16,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:05:16,744 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2018-01-25 00:05:16,744 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 00:05:16,744 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2018-01-25 00:05:16,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-25 00:05:16,745 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:05:16,745 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 00:05:16,745 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 00:05:16,745 INFO L82 PathProgramCache]: Analyzing trace with hash 64872883, now seen corresponding path program 1 times [2018-01-25 00:05:16,745 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:05:16,746 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:05:16,746 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:05:16,746 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:05:16,747 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:05:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:05:16,762 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:05:16,997 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 00:05:16,998 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:05:16,998 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 00:05:16,998 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:05:16,998 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 00:05:16,999 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 00:05:16,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:05:16,999 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 7 states. [2018-01-25 00:05:17,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:05:17,196 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2018-01-25 00:05:17,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 00:05:17,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-01-25 00:05:17,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:05:17,198 INFO L225 Difference]: With dead ends: 67 [2018-01-25 00:05:17,198 INFO L226 Difference]: Without dead ends: 66 [2018-01-25 00:05:17,198 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-01-25 00:05:17,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-01-25 00:05:17,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2018-01-25 00:05:17,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-01-25 00:05:17,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2018-01-25 00:05:17,205 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 19 [2018-01-25 00:05:17,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:05:17,205 INFO L432 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2018-01-25 00:05:17,205 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 00:05:17,205 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2018-01-25 00:05:17,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 00:05:17,206 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:05:17,206 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] [2018-01-25 00:05:17,206 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 00:05:17,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1610907055, now seen corresponding path program 1 times [2018-01-25 00:05:17,206 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:05:17,208 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:05:17,208 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:05:17,209 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:05:17,209 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:05:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:05:17,222 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:05:17,255 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 00:05:17,256 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:05:17,256 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-25 00:05:17,256 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:05:17,256 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 00:05:17,257 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 00:05:17,257 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 00:05:17,257 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 3 states. [2018-01-25 00:05:17,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:05:17,313 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2018-01-25 00:05:17,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 00:05:17,314 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-01-25 00:05:17,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:05:17,315 INFO L225 Difference]: With dead ends: 71 [2018-01-25 00:05:17,315 INFO L226 Difference]: Without dead ends: 60 [2018-01-25 00:05:17,316 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 00:05:17,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-25 00:05:17,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-01-25 00:05:17,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-01-25 00:05:17,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2018-01-25 00:05:17,325 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 22 [2018-01-25 00:05:17,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:05:17,326 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2018-01-25 00:05:17,326 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 00:05:17,326 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2018-01-25 00:05:17,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-25 00:05:17,327 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:05:17,327 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] [2018-01-25 00:05:17,327 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 00:05:17,328 INFO L82 PathProgramCache]: Analyzing trace with hash -655458449, now seen corresponding path program 1 times [2018-01-25 00:05:17,328 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:05:17,329 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:05:17,329 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:05:17,329 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:05:17,329 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:05:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:05:17,343 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:05:17,395 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 00:05:17,395 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:05:17,396 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 00:05:17,396 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:05:17,396 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 00:05:17,396 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 00:05:17,397 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 00:05:17,397 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 6 states. [2018-01-25 00:05:17,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:05:17,467 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2018-01-25 00:05:17,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:05:17,468 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-01-25 00:05:17,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:05:17,469 INFO L225 Difference]: With dead ends: 67 [2018-01-25 00:05:17,469 INFO L226 Difference]: Without dead ends: 60 [2018-01-25 00:05:17,469 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:05:17,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-25 00:05:17,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-01-25 00:05:17,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-01-25 00:05:17,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2018-01-25 00:05:17,478 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 24 [2018-01-25 00:05:17,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:05:17,478 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2018-01-25 00:05:17,478 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 00:05:17,479 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2018-01-25 00:05:17,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 00:05:17,480 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:05:17,480 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 00:05:17,480 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 00:05:17,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1673666846, now seen corresponding path program 1 times [2018-01-25 00:05:17,480 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:05:17,482 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:05:17,482 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:05:17,482 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:05:17,482 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:05:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:05:17,502 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:05:17,578 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 00:05:17,578 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:05:17,578 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-25 00:05:17,579 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:05:17,579 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 00:05:17,579 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 00:05:17,579 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-01-25 00:05:17,580 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 10 states. [2018-01-25 00:05:17,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:05:17,837 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2018-01-25 00:05:17,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-25 00:05:17,838 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-01-25 00:05:17,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:05:17,839 INFO L225 Difference]: With dead ends: 60 [2018-01-25 00:05:17,839 INFO L226 Difference]: Without dead ends: 59 [2018-01-25 00:05:17,839 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2018-01-25 00:05:17,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-01-25 00:05:17,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-01-25 00:05:17,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-01-25 00:05:17,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2018-01-25 00:05:17,848 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 34 [2018-01-25 00:05:17,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:05:17,848 INFO L432 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2018-01-25 00:05:17,848 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 00:05:17,849 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2018-01-25 00:05:17,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 00:05:17,850 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:05:17,850 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 00:05:17,851 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 00:05:17,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1673666845, now seen corresponding path program 1 times [2018-01-25 00:05:17,852 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:05:17,853 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:05:17,854 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:05:17,854 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:05:17,854 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:05:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:05:17,871 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:05:17,934 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 00:05:17,935 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:05:17,935 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:05:17,935 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:05:17,935 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:05:17,935 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:05:17,936 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:05:17,936 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 4 states. [2018-01-25 00:05:17,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:05:17,989 INFO L93 Difference]: Finished difference Result 97 states and 101 transitions. [2018-01-25 00:05:17,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:05:17,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-01-25 00:05:17,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:05:17,991 INFO L225 Difference]: With dead ends: 97 [2018-01-25 00:05:17,991 INFO L226 Difference]: Without dead ends: 60 [2018-01-25 00:05:17,991 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 00:05:17,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-25 00:05:17,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-01-25 00:05:17,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-01-25 00:05:17,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2018-01-25 00:05:17,999 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 34 [2018-01-25 00:05:18,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:05:18,000 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2018-01-25 00:05:18,000 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:05:18,000 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2018-01-25 00:05:18,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-25 00:05:18,001 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:05:18,001 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 00:05:18,001 INFO L371 AbstractCegarLoop]: === Iteration 8 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-01-25 00:05:18,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1908152085, now seen corresponding path program 1 times [2018-01-25 00:05:18,002 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:05:18,003 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:05:18,003 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:05:18,003 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:05:18,003 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:05:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:05:18,020 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:05:18,057 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 00:05:18,057 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 00:05:18,058 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 00:05:18,058 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2018-01-25 00:05:18,060 INFO L201 CegarAbsIntRunner]: [0], [3], [5], [7], [11], [15], [19], [20], [24], [26], [27], [39], [42], [43], [44], [46], [47], [52], [55], [56], [60], [64], [68], [72], [73], [74], [75], [76], [78], [80], [82], [83], [84], [86], [88] [2018-01-25 00:05:18,107 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 00:05:18,107 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