java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf -i ../../../trunk/examples/svcomp/memsafety/test-0232_false-valid-free.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:04:59,470 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:04:59,472 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:04:59,486 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:04:59,487 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:04:59,488 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:04:59,489 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:04:59,490 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:04:59,492 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:04:59,493 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:04:59,493 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:04:59,493 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:04:59,494 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:04:59,495 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:04:59,496 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:04:59,498 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:04:59,500 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:04:59,502 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:04:59,504 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:04:59,505 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:04:59,508 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 20:04:59,508 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 20:04:59,508 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 20:04:59,509 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 20:04:59,510 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 20:04:59,512 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 20:04:59,512 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 20:04:59,512 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 20:04:59,513 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 20:04:59,513 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:04:59,513 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:04:59,514 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf [2018-01-24 20:04:59,523 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:04:59,524 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:04:59,525 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:04:59,525 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:04:59,525 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:04:59,525 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:04:59,526 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:04:59,526 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:04:59,526 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:04:59,527 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:04:59,527 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:04:59,527 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:04:59,527 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:04:59,528 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:04:59,528 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:04:59,528 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:04:59,528 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:04:59,528 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:04:59,528 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:04:59,529 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:04:59,529 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:04:59,529 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:04:59,529 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:04:59,529 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:04:59,530 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:04:59,530 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:04:59,530 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:04:59,530 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:04:59,531 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:04:59,531 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:04:59,531 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:04:59,531 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:04:59,531 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:04:59,531 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:04:59,532 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:04:59,532 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:04:59,533 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:04:59,570 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:04:59,583 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:04:59,587 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:04:59,589 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:04:59,589 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:04:59,590 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0232_false-valid-free.i [2018-01-24 20:04:59,770 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:04:59,774 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:04:59,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:04:59,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:04:59,781 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:04:59,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:04:59" (1/1) ... [2018-01-24 20:04:59,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41641836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:04:59, skipping insertion in model container [2018-01-24 20:04:59,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:04:59" (1/1) ... [2018-01-24 20:04:59,799 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:04:59,838 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:04:59,959 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:04:59,977 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:04:59,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:04:59 WrapperNode [2018-01-24 20:04:59,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:04:59,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:04:59,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:04:59,986 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:04:59,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:04:59" (1/1) ... [2018-01-24 20:04:59,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:04:59" (1/1) ... [2018-01-24 20:05:00,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:04:59" (1/1) ... [2018-01-24 20:05:00,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:04:59" (1/1) ... [2018-01-24 20:05:00,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:04:59" (1/1) ... [2018-01-24 20:05:00,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:04:59" (1/1) ... [2018-01-24 20:05:00,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:04:59" (1/1) ... [2018-01-24 20:05:00,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:05:00,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:05:00,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:05:00,021 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:05:00,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:04:59" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:05:00,074 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:05:00,074 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:05:00,074 INFO L136 BoogieDeclarations]: Found implementation of procedure append [2018-01-24 20:05:00,074 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:05:00,074 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 20:05:00,075 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 20:05:00,075 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:05:00,075 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:05:00,075 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:05:00,075 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:05:00,075 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 20:05:00,075 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:05:00,076 INFO L128 BoogieDeclarations]: Found specification of procedure append [2018-01-24 20:05:00,076 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:05:00,076 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:05:00,076 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:05:00,521 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:05:00,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:05:00 BoogieIcfgContainer [2018-01-24 20:05:00,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:05:00,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:05:00,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:05:00,525 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:05:00,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:04:59" (1/3) ... [2018-01-24 20:05:00,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbe261a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:05:00, skipping insertion in model container [2018-01-24 20:05:00,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:04:59" (2/3) ... [2018-01-24 20:05:00,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbe261a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:05:00, skipping insertion in model container [2018-01-24 20:05:00,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:05:00" (3/3) ... [2018-01-24 20:05:00,529 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0232_false-valid-free.i [2018-01-24 20:05:00,539 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:05:00,547 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 53 error locations. [2018-01-24 20:05:00,595 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:05:00,596 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:05:00,596 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:05:00,596 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:05:00,596 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:05:00,596 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:05:00,596 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:05:00,596 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:05:00,597 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:05:00,614 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states. [2018-01-24 20:05:00,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-01-24 20:05:00,619 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:05:00,620 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:05:00,620 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-01-24 20:05:00,624 INFO L82 PathProgramCache]: Analyzing trace with hash 842410072, now seen corresponding path program 1 times [2018-01-24 20:05:00,626 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:05:00,669 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:00,669 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:05:00,670 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:00,670 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:05:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:05:00,716 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:05:00,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:05:00,774 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:05:00,774 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 20:05:00,774 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:05:00,777 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 20:05:00,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 20:05:00,789 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:05:00,791 INFO L87 Difference]: Start difference. First operand 117 states. Second operand 3 states. [2018-01-24 20:05:01,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:05:01,139 INFO L93 Difference]: Finished difference Result 188 states and 205 transitions. [2018-01-24 20:05:01,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 20:05:01,142 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-01-24 20:05:01,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:05:01,156 INFO L225 Difference]: With dead ends: 188 [2018-01-24 20:05:01,156 INFO L226 Difference]: Without dead ends: 112 [2018-01-24 20:05:01,159 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:05:01,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-01-24 20:05:01,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2018-01-24 20:05:01,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-24 20:05:01,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 114 transitions. [2018-01-24 20:05:01,206 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 114 transitions. Word has length 7 [2018-01-24 20:05:01,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:05:01,206 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 114 transitions. [2018-01-24 20:05:01,207 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 20:05:01,207 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 114 transitions. [2018-01-24 20:05:01,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-01-24 20:05:01,207 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:05:01,207 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:05:01,208 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-01-24 20:05:01,208 INFO L82 PathProgramCache]: Analyzing trace with hash 842410073, now seen corresponding path program 1 times [2018-01-24 20:05:01,208 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:05:01,209 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:01,209 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:05:01,210 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:01,210 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:05:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:05:01,225 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:05:01,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:05:01,289 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:05:01,289 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 20:05:01,289 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:05:01,291 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 20:05:01,291 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 20:05:01,291 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:05:01,291 INFO L87 Difference]: Start difference. First operand 109 states and 114 transitions. Second operand 3 states. [2018-01-24 20:05:01,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:05:01,408 INFO L93 Difference]: Finished difference Result 111 states and 117 transitions. [2018-01-24 20:05:01,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 20:05:01,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-01-24 20:05:01,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:05:01,410 INFO L225 Difference]: With dead ends: 111 [2018-01-24 20:05:01,410 INFO L226 Difference]: Without dead ends: 110 [2018-01-24 20:05:01,411 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:05:01,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-01-24 20:05:01,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2018-01-24 20:05:01,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-01-24 20:05:01,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 113 transitions. [2018-01-24 20:05:01,418 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 113 transitions. Word has length 7 [2018-01-24 20:05:01,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:05:01,418 INFO L432 AbstractCegarLoop]: Abstraction has 108 states and 113 transitions. [2018-01-24 20:05:01,418 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 20:05:01,419 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 113 transitions. [2018-01-24 20:05:01,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 20:05:01,419 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:05:01,419 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:05:01,419 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-01-24 20:05:01,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1112643303, now seen corresponding path program 1 times [2018-01-24 20:05:01,419 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:05:01,420 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:01,421 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:05:01,421 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:01,421 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:05:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:05:01,436 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:05:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:05:01,508 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:05:01,508 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:05:01,508 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:05:01,508 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:05:01,509 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:05:01,509 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:05:01,509 INFO L87 Difference]: Start difference. First operand 108 states and 113 transitions. Second operand 5 states. [2018-01-24 20:05:01,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:05:01,730 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2018-01-24 20:05:01,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:05:01,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-01-24 20:05:01,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:05:01,732 INFO L225 Difference]: With dead ends: 109 [2018-01-24 20:05:01,733 INFO L226 Difference]: Without dead ends: 106 [2018-01-24 20:05:01,733 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:05:01,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-01-24 20:05:01,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2018-01-24 20:05:01,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-01-24 20:05:01,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 110 transitions. [2018-01-24 20:05:01,742 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 110 transitions. Word has length 13 [2018-01-24 20:05:01,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:05:01,742 INFO L432 AbstractCegarLoop]: Abstraction has 105 states and 110 transitions. [2018-01-24 20:05:01,742 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:05:01,743 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 110 transitions. [2018-01-24 20:05:01,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 20:05:01,743 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:05:01,743 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:05:01,743 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-01-24 20:05:01,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1112643304, now seen corresponding path program 1 times [2018-01-24 20:05:01,744 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:05:01,745 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:01,745 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:05:01,745 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:01,745 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:05:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:05:01,760 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:05:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:05:01,857 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:05:01,858 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:05:01,858 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:05:01,858 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 20:05:01,859 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 20:05:01,859 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:05:01,859 INFO L87 Difference]: Start difference. First operand 105 states and 110 transitions. Second operand 7 states. [2018-01-24 20:05:02,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:05:02,121 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2018-01-24 20:05:02,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:05:02,157 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-01-24 20:05:02,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:05:02,159 INFO L225 Difference]: With dead ends: 105 [2018-01-24 20:05:02,159 INFO L226 Difference]: Without dead ends: 93 [2018-01-24 20:05:02,159 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:05:02,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-24 20:05:02,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-01-24 20:05:02,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-01-24 20:05:02,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2018-01-24 20:05:02,168 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 13 [2018-01-24 20:05:02,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:05:02,168 INFO L432 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2018-01-24 20:05:02,168 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 20:05:02,169 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2018-01-24 20:05:02,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-24 20:05:02,169 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:05:02,169 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:05:02,170 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-01-24 20:05:02,170 INFO L82 PathProgramCache]: Analyzing trace with hash 132204114, now seen corresponding path program 1 times [2018-01-24 20:05:02,170 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:05:02,171 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:02,171 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:05:02,171 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:02,172 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:05:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:05:02,183 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:05:02,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:05:02,206 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:05:02,206 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:05:02,206 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:05:02,207 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:05:02,207 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:05:02,207 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:05:02,207 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 4 states. [2018-01-24 20:05:02,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:05:02,293 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2018-01-24 20:05:02,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:05:02,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-01-24 20:05:02,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:05:02,294 INFO L225 Difference]: With dead ends: 93 [2018-01-24 20:05:02,294 INFO L226 Difference]: Without dead ends: 89 [2018-01-24 20:05:02,295 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:05:02,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-01-24 20:05:02,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-01-24 20:05:02,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-01-24 20:05:02,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2018-01-24 20:05:02,302 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 14 [2018-01-24 20:05:02,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:05:02,302 INFO L432 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2018-01-24 20:05:02,302 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:05:02,303 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2018-01-24 20:05:02,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-24 20:05:02,303 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:05:02,303 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:05:02,303 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-01-24 20:05:02,303 INFO L82 PathProgramCache]: Analyzing trace with hash 132204115, now seen corresponding path program 1 times [2018-01-24 20:05:02,304 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:05:02,304 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:02,304 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:05:02,304 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:02,305 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:05:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:05:02,318 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:05:02,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:05:02,372 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:05:02,372 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:05:02,372 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:05:02,372 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:05:02,373 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:05:02,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:05:02,373 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 4 states. [2018-01-24 20:05:02,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:05:02,422 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2018-01-24 20:05:02,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:05:02,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-01-24 20:05:02,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:05:02,423 INFO L225 Difference]: With dead ends: 89 [2018-01-24 20:05:02,423 INFO L226 Difference]: Without dead ends: 85 [2018-01-24 20:05:02,423 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:05:02,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-01-24 20:05:02,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-01-24 20:05:02,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-01-24 20:05:02,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2018-01-24 20:05:02,431 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 14 [2018-01-24 20:05:02,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:05:02,431 INFO L432 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2018-01-24 20:05:02,431 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:05:02,431 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2018-01-24 20:05:02,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-24 20:05:02,432 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:05:02,432 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:05:02,432 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-01-24 20:05:02,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1054600686, now seen corresponding path program 1 times [2018-01-24 20:05:02,433 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:05:02,434 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:02,434 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:05:02,434 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:02,434 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:05:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:05:02,448 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:05:02,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:05:02,532 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:05:02,532 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 20:05:02,532 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:05:02,533 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 20:05:02,533 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 20:05:02,533 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:05:02,533 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 8 states. [2018-01-24 20:05:02,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:05:02,722 INFO L93 Difference]: Finished difference Result 178 states and 189 transitions. [2018-01-24 20:05:02,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-24 20:05:02,722 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2018-01-24 20:05:02,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:05:02,723 INFO L225 Difference]: With dead ends: 178 [2018-01-24 20:05:02,723 INFO L226 Difference]: Without dead ends: 100 [2018-01-24 20:05:02,724 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-01-24 20:05:02,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-01-24 20:05:02,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 95. [2018-01-24 20:05:02,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-01-24 20:05:02,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 100 transitions. [2018-01-24 20:05:02,730 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 100 transitions. Word has length 19 [2018-01-24 20:05:02,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:05:02,730 INFO L432 AbstractCegarLoop]: Abstraction has 95 states and 100 transitions. [2018-01-24 20:05:02,730 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 20:05:02,730 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 100 transitions. [2018-01-24 20:05:02,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-24 20:05:02,732 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:05:02,732 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] [2018-01-24 20:05:02,732 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-01-24 20:05:02,732 INFO L82 PathProgramCache]: Analyzing trace with hash -882655928, now seen corresponding path program 1 times [2018-01-24 20:05:02,732 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:05:02,733 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:02,733 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:05:02,733 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:02,733 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:05:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:05:02,748 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:05:02,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:05:02,842 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:05:02,843 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:05:02,843 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:05:02,843 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 20:05:02,843 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 20:05:02,844 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:05:02,844 INFO L87 Difference]: Start difference. First operand 95 states and 100 transitions. Second operand 7 states. [2018-01-24 20:05:03,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:05:03,056 INFO L93 Difference]: Finished difference Result 117 states and 124 transitions. [2018-01-24 20:05:03,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 20:05:03,057 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2018-01-24 20:05:03,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:05:03,058 INFO L225 Difference]: With dead ends: 117 [2018-01-24 20:05:03,058 INFO L226 Difference]: Without dead ends: 116 [2018-01-24 20:05:03,058 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-01-24 20:05:03,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-01-24 20:05:03,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 94. [2018-01-24 20:05:03,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-01-24 20:05:03,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2018-01-24 20:05:03,064 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 30 [2018-01-24 20:05:03,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:05:03,065 INFO L432 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2018-01-24 20:05:03,065 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 20:05:03,065 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2018-01-24 20:05:03,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-24 20:05:03,065 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:05:03,065 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] [2018-01-24 20:05:03,066 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-01-24 20:05:03,066 INFO L82 PathProgramCache]: Analyzing trace with hash -882655927, now seen corresponding path program 1 times [2018-01-24 20:05:03,066 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:05:03,067 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:03,067 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:05:03,067 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:03,067 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:05:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:05:03,085 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:05:03,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:05:03,242 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:05:03,242 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 20:05:03,242 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:05:03,243 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 20:05:03,243 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 20:05:03,243 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-01-24 20:05:03,243 INFO L87 Difference]: Start difference. First operand 94 states and 99 transitions. Second operand 9 states. [2018-01-24 20:05:03,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:05:03,483 INFO L93 Difference]: Finished difference Result 123 states and 130 transitions. [2018-01-24 20:05:03,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-24 20:05:03,483 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-01-24 20:05:03,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:05:03,485 INFO L225 Difference]: With dead ends: 123 [2018-01-24 20:05:03,485 INFO L226 Difference]: Without dead ends: 122 [2018-01-24 20:05:03,485 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2018-01-24 20:05:03,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-01-24 20:05:03,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 93. [2018-01-24 20:05:03,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-01-24 20:05:03,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2018-01-24 20:05:03,491 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 30 [2018-01-24 20:05:03,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:05:03,492 INFO L432 AbstractCegarLoop]: Abstraction has 93 states and 98 transitions. [2018-01-24 20:05:03,492 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 20:05:03,492 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 98 transitions. [2018-01-24 20:05:03,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-24 20:05:03,493 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:05:03,493 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] [2018-01-24 20:05:03,494 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-01-24 20:05:03,494 INFO L82 PathProgramCache]: Analyzing trace with hash -552202616, now seen corresponding path program 1 times [2018-01-24 20:05:03,494 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:05:03,495 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:03,495 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:05:03,495 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:03,495 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:05:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:05:03,509 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:05:03,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:05:03,591 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:05:03,592 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:05:03,592 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:05:03,592 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:05:03,592 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:05:03,592 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:05:03,592 INFO L87 Difference]: Start difference. First operand 93 states and 98 transitions. Second operand 5 states. [2018-01-24 20:05:03,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:05:03,714 INFO L93 Difference]: Finished difference Result 130 states and 137 transitions. [2018-01-24 20:05:03,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:05:03,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-01-24 20:05:03,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:05:03,715 INFO L225 Difference]: With dead ends: 130 [2018-01-24 20:05:03,715 INFO L226 Difference]: Without dead ends: 99 [2018-01-24 20:05:03,715 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:05:03,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-01-24 20:05:03,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2018-01-24 20:05:03,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-01-24 20:05:03,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 101 transitions. [2018-01-24 20:05:03,720 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 101 transitions. Word has length 33 [2018-01-24 20:05:03,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:05:03,720 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 101 transitions. [2018-01-24 20:05:03,721 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:05:03,721 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 101 transitions. [2018-01-24 20:05:03,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-24 20:05:03,722 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:05:03,722 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] [2018-01-24 20:05:03,722 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-01-24 20:05:03,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1412958943, now seen corresponding path program 1 times [2018-01-24 20:05:03,723 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:05:03,724 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:03,724 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:05:03,724 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:03,724 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:05:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:05:03,738 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:05:03,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:05:03,806 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:05:03,806 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:05:03,806 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:05:03,806 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:05:03,807 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:05:03,807 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:05:03,807 INFO L87 Difference]: Start difference. First operand 96 states and 101 transitions. Second operand 5 states. [2018-01-24 20:05:03,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:05:03,983 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2018-01-24 20:05:03,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:05:03,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-01-24 20:05:03,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:05:03,985 INFO L225 Difference]: With dead ends: 96 [2018-01-24 20:05:03,985 INFO L226 Difference]: Without dead ends: 95 [2018-01-24 20:05:03,985 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:05:03,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-01-24 20:05:03,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-01-24 20:05:03,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-01-24 20:05:03,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 100 transitions. [2018-01-24 20:05:03,990 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 100 transitions. Word has length 33 [2018-01-24 20:05:03,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:05:03,990 INFO L432 AbstractCegarLoop]: Abstraction has 95 states and 100 transitions. [2018-01-24 20:05:03,990 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:05:03,990 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 100 transitions. [2018-01-24 20:05:03,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-24 20:05:03,991 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:05:03,992 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] [2018-01-24 20:05:03,992 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-01-24 20:05:03,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1412958942, now seen corresponding path program 1 times [2018-01-24 20:05:03,992 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:05:03,993 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:03,993 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:05:03,993 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:03,993 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:05:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:05:04,015 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:05:04,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:05:04,204 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:05:04,204 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-24 20:05:04,204 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:05:04,205 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-24 20:05:04,205 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-24 20:05:04,205 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-01-24 20:05:04,205 INFO L87 Difference]: Start difference. First operand 95 states and 100 transitions. Second operand 11 states. [2018-01-24 20:05:04,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:05:04,481 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2018-01-24 20:05:04,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-24 20:05:04,482 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2018-01-24 20:05:04,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:05:04,483 INFO L225 Difference]: With dead ends: 98 [2018-01-24 20:05:04,483 INFO L226 Difference]: Without dead ends: 97 [2018-01-24 20:05:04,484 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-01-24 20:05:04,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-01-24 20:05:04,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 94. [2018-01-24 20:05:04,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-01-24 20:05:04,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2018-01-24 20:05:04,489 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 33 [2018-01-24 20:05:04,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:05:04,490 INFO L432 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2018-01-24 20:05:04,490 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-24 20:05:04,490 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2018-01-24 20:05:04,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 20:05:04,491 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:05:04,491 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:05:04,491 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-01-24 20:05:04,492 INFO L82 PathProgramCache]: Analyzing trace with hash -852054260, now seen corresponding path program 1 times [2018-01-24 20:05:04,492 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:05:04,493 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:04,493 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:05:04,493 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:04,493 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:05:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:05:04,513 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:05:04,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:05:04,917 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:05:04,917 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-01-24 20:05:04,917 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:05:04,917 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-24 20:05:04,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-24 20:05:04,918 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2018-01-24 20:05:04,918 INFO L87 Difference]: Start difference. First operand 94 states and 99 transitions. Second operand 15 states. [2018-01-24 20:05:05,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:05:05,553 INFO L93 Difference]: Finished difference Result 133 states and 142 transitions. [2018-01-24 20:05:05,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-01-24 20:05:05,553 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2018-01-24 20:05:05,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:05:05,554 INFO L225 Difference]: With dead ends: 133 [2018-01-24 20:05:05,554 INFO L226 Difference]: Without dead ends: 132 [2018-01-24 20:05:05,555 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2018-01-24 20:05:05,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-01-24 20:05:05,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 109. [2018-01-24 20:05:05,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-24 20:05:05,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2018-01-24 20:05:05,563 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 34 [2018-01-24 20:05:05,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:05:05,563 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2018-01-24 20:05:05,563 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-24 20:05:05,563 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2018-01-24 20:05:05,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 20:05:05,565 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:05:05,565 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:05:05,565 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-01-24 20:05:05,565 INFO L82 PathProgramCache]: Analyzing trace with hash -852054259, now seen corresponding path program 1 times [2018-01-24 20:05:05,565 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:05:05,566 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:05,566 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:05:05,566 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:05,567 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:05:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:05:05,585 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:05:05,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:05:05,962 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:05:05,962 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-01-24 20:05:05,962 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:05:05,962 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-24 20:05:05,962 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-24 20:05:05,963 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2018-01-24 20:05:05,963 INFO L87 Difference]: Start difference. First operand 109 states and 117 transitions. Second operand 15 states. [2018-01-24 20:05:06,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:05:06,510 INFO L93 Difference]: Finished difference Result 122 states and 131 transitions. [2018-01-24 20:05:06,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-24 20:05:06,511 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2018-01-24 20:05:06,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:05:06,512 INFO L225 Difference]: With dead ends: 122 [2018-01-24 20:05:06,512 INFO L226 Difference]: Without dead ends: 121 [2018-01-24 20:05:06,513 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=686, Unknown=0, NotChecked=0, Total=812 [2018-01-24 20:05:06,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-01-24 20:05:06,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 109. [2018-01-24 20:05:06,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-24 20:05:06,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 116 transitions. [2018-01-24 20:05:06,519 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 116 transitions. Word has length 34 [2018-01-24 20:05:06,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:05:06,519 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 116 transitions. [2018-01-24 20:05:06,519 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-24 20:05:06,519 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 116 transitions. [2018-01-24 20:05:06,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-24 20:05:06,520 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:05:06,520 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:05:06,520 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-01-24 20:05:06,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1908491397, now seen corresponding path program 1 times [2018-01-24 20:05:06,520 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:05:06,521 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:06,521 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:05:06,521 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:06,521 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:05:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:05:06,532 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:05:06,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:05:06,605 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:05:06,605 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 20:05:06,605 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:05:06,606 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 20:05:06,606 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 20:05:06,606 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:05:06,606 INFO L87 Difference]: Start difference. First operand 109 states and 116 transitions. Second operand 8 states. [2018-01-24 20:05:06,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:05:06,744 INFO L93 Difference]: Finished difference Result 114 states and 120 transitions. [2018-01-24 20:05:06,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-24 20:05:06,745 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2018-01-24 20:05:06,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:05:06,745 INFO L225 Difference]: With dead ends: 114 [2018-01-24 20:05:06,745 INFO L226 Difference]: Without dead ends: 106 [2018-01-24 20:05:06,746 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-01-24 20:05:06,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-01-24 20:05:06,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-01-24 20:05:06,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-01-24 20:05:06,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 111 transitions. [2018-01-24 20:05:06,752 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 111 transitions. Word has length 35 [2018-01-24 20:05:06,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:05:06,752 INFO L432 AbstractCegarLoop]: Abstraction has 106 states and 111 transitions. [2018-01-24 20:05:06,753 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 20:05:06,753 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 111 transitions. [2018-01-24 20:05:06,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-24 20:05:06,754 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:05:06,754 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, 1] [2018-01-24 20:05:06,754 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-01-24 20:05:06,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1514610189, now seen corresponding path program 1 times [2018-01-24 20:05:06,754 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:05:06,755 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:06,755 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:05:06,755 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:06,755 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:05:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:05:06,781 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:05:07,189 WARN L143 SmtUtils]: Spent 103ms on a formula simplification that was a NOOP. DAG size: 10 [2018-01-24 20:05:07,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:05:07,603 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:05:07,603 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-01-24 20:05:07,603 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:05:07,604 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-24 20:05:07,604 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-24 20:05:07,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2018-01-24 20:05:07,604 INFO L87 Difference]: Start difference. First operand 106 states and 111 transitions. Second operand 15 states. [2018-01-24 20:05:08,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:05:08,618 INFO L93 Difference]: Finished difference Result 145 states and 154 transitions. [2018-01-24 20:05:08,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-24 20:05:08,619 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 36 [2018-01-24 20:05:08,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:05:08,620 INFO L225 Difference]: With dead ends: 145 [2018-01-24 20:05:08,620 INFO L226 Difference]: Without dead ends: 144 [2018-01-24 20:05:08,620 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2018-01-24 20:05:08,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-01-24 20:05:08,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2018-01-24 20:05:08,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-01-24 20:05:08,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 126 transitions. [2018-01-24 20:05:08,628 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 126 transitions. Word has length 36 [2018-01-24 20:05:08,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:05:08,629 INFO L432 AbstractCegarLoop]: Abstraction has 118 states and 126 transitions. [2018-01-24 20:05:08,629 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-24 20:05:08,629 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 126 transitions. [2018-01-24 20:05:08,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-24 20:05:08,630 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:05:08,630 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, 1, 1] [2018-01-24 20:05:08,630 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-01-24 20:05:08,630 INFO L82 PathProgramCache]: Analyzing trace with hash -291724377, now seen corresponding path program 1 times [2018-01-24 20:05:08,630 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:05:08,631 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:08,632 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:05:08,632 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:08,632 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:05:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:05:08,646 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:05:08,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:05:08,717 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:05:08,717 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 20:05:08,717 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:05:08,717 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 20:05:08,717 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 20:05:08,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:05:08,718 INFO L87 Difference]: Start difference. First operand 118 states and 126 transitions. Second operand 8 states. [2018-01-24 20:05:08,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:05:08,841 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2018-01-24 20:05:08,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 20:05:08,845 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2018-01-24 20:05:08,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:05:08,846 INFO L225 Difference]: With dead ends: 118 [2018-01-24 20:05:08,846 INFO L226 Difference]: Without dead ends: 117 [2018-01-24 20:05:08,847 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-01-24 20:05:08,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-01-24 20:05:08,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-01-24 20:05:08,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-01-24 20:05:08,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 125 transitions. [2018-01-24 20:05:08,855 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 125 transitions. Word has length 37 [2018-01-24 20:05:08,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:05:08,855 INFO L432 AbstractCegarLoop]: Abstraction has 117 states and 125 transitions. [2018-01-24 20:05:08,855 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 20:05:08,855 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 125 transitions. [2018-01-24 20:05:08,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-24 20:05:08,856 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:05:08,856 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, 1, 1] [2018-01-24 20:05:08,857 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-01-24 20:05:08,857 INFO L82 PathProgramCache]: Analyzing trace with hash -291724376, now seen corresponding path program 1 times [2018-01-24 20:05:08,857 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:05:08,858 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:08,858 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:05:08,858 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:08,858 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:05:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:05:08,879 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:05:09,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:05:09,498 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:05:09,498 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-01-24 20:05:09,498 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:05:09,498 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-24 20:05:09,498 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-24 20:05:09,499 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2018-01-24 20:05:09,499 INFO L87 Difference]: Start difference. First operand 117 states and 125 transitions. Second operand 15 states. [2018-01-24 20:05:10,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:05:10,079 INFO L93 Difference]: Finished difference Result 128 states and 136 transitions. [2018-01-24 20:05:10,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-01-24 20:05:10,079 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 37 [2018-01-24 20:05:10,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:05:10,080 INFO L225 Difference]: With dead ends: 128 [2018-01-24 20:05:10,080 INFO L226 Difference]: Without dead ends: 127 [2018-01-24 20:05:10,080 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2018-01-24 20:05:10,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-01-24 20:05:10,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 118. [2018-01-24 20:05:10,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-01-24 20:05:10,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 126 transitions. [2018-01-24 20:05:10,087 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 126 transitions. Word has length 37 [2018-01-24 20:05:10,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:05:10,087 INFO L432 AbstractCegarLoop]: Abstraction has 118 states and 126 transitions. [2018-01-24 20:05:10,087 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-24 20:05:10,087 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 126 transitions. [2018-01-24 20:05:10,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-24 20:05:10,088 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:05:10,088 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:05:10,088 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-01-24 20:05:10,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1900218884, now seen corresponding path program 1 times [2018-01-24 20:05:10,088 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:05:10,089 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:10,089 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:05:10,089 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:05:10,089 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:05:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:05:10,099 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:05:10,218 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:05:10,218 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:05:10,218 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 20:05:10,219 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 39 with the following transitions: [2018-01-24 20:05:10,220 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [6], [12], [15], [20], [113], [114], [115], [116], [119], [122], [123], [128], [129], [133], [137], [138], [139], [141], [144], [145], [148], [149], [150], [151], [153], [154] [2018-01-24 20:05:10,267 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 20:05:10,267 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