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_preciseopt.epf -i ../../../trunk/examples/svcomp/memsafety-ext/tree_stack_true-valid-memsafety_false-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 03:09:14,229 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 03:09:14,232 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 03:09:14,248 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 03:09:14,248 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 03:09:14,249 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 03:09:14,250 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 03:09:14,252 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 03:09:14,255 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 03:09:14,256 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 03:09:14,256 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 03:09:14,257 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 03:09:14,258 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 03:09:14,259 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 03:09:14,260 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 03:09:14,263 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 03:09:14,265 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 03:09:14,267 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 03:09:14,268 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 03:09:14,269 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 03:09:14,272 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 03:09:14,272 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 03:09:14,272 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 03:09:14,273 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 03:09:14,274 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 03:09:14,275 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 03:09:14,275 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 03:09:14,276 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 03:09:14,276 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 03:09:14,276 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 03:09:14,277 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 03:09:14,277 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_preciseopt.epf [2018-01-25 03:09:14,287 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 03:09:14,287 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 03:09:14,288 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 03:09:14,288 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 03:09:14,289 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 03:09:14,289 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 03:09:14,289 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-25 03:09:14,289 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 03:09:14,289 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 03:09:14,290 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 03:09:14,290 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 03:09:14,290 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 03:09:14,290 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 03:09:14,291 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 03:09:14,291 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 03:09:14,291 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 03:09:14,291 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 03:09:14,291 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 03:09:14,292 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 03:09:14,292 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 03:09:14,292 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 03:09:14,292 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 03:09:14,292 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 03:09:14,293 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 03:09:14,293 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 03:09:14,293 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:09:14,293 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 03:09:14,293 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 03:09:14,294 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 03:09:14,294 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 03:09:14,294 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 03:09:14,294 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 03:09:14,294 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 03:09:14,294 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 03:09:14,295 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 03:09:14,295 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 03:09:14,296 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 03:09:14,330 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 03:09:14,343 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 03:09:14,347 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 03:09:14,348 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 03:09:14,348 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 03:09:14,349 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext/tree_stack_true-valid-memsafety_false-termination.i [2018-01-25 03:09:14,542 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 03:09:14,548 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 03:09:14,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 03:09:14,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 03:09:14,555 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 03:09:14,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:09:14" (1/1) ... [2018-01-25 03:09:14,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b352040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:09:14, skipping insertion in model container [2018-01-25 03:09:14,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:09:14" (1/1) ... [2018-01-25 03:09:14,578 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:09:14,621 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:09:14,741 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:09:14,762 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:09:14,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:09:14 WrapperNode [2018-01-25 03:09:14,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 03:09:14,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 03:09:14,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 03:09:14,769 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 03:09:14,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:09:14" (1/1) ... [2018-01-25 03:09:14,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:09:14" (1/1) ... [2018-01-25 03:09:14,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:09:14" (1/1) ... [2018-01-25 03:09:14,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:09:14" (1/1) ... [2018-01-25 03:09:14,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:09:14" (1/1) ... [2018-01-25 03:09:14,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:09:14" (1/1) ... [2018-01-25 03:09:14,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:09:14" (1/1) ... [2018-01-25 03:09:14,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 03:09:14,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 03:09:14,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 03:09:14,804 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 03:09:14,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:09:14" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:09:14,858 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 03:09:14,858 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 03:09:14,858 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 03:09:14,858 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 03:09:14,858 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 03:09:14,859 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 03:09:14,859 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 03:09:14,859 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 03:09:14,859 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 03:09:14,859 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 03:09:14,859 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 03:09:14,859 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 03:09:14,859 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 03:09:14,859 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 03:09:15,366 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 03:09:15,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:09:15 BoogieIcfgContainer [2018-01-25 03:09:15,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 03:09:15,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 03:09:15,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 03:09:15,370 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 03:09:15,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 03:09:14" (1/3) ... [2018-01-25 03:09:15,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66808af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:09:15, skipping insertion in model container [2018-01-25 03:09:15,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:09:14" (2/3) ... [2018-01-25 03:09:15,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66808af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:09:15, skipping insertion in model container [2018-01-25 03:09:15,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:09:15" (3/3) ... [2018-01-25 03:09:15,375 INFO L105 eAbstractionObserver]: Analyzing ICFG tree_stack_true-valid-memsafety_false-termination.i [2018-01-25 03:09:15,384 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 03:09:15,393 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 65 error locations. [2018-01-25 03:09:15,452 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 03:09:15,453 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 03:09:15,453 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 03:09:15,453 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 03:09:15,453 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 03:09:15,453 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 03:09:15,454 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 03:09:15,454 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 03:09:15,456 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 03:09:15,486 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states. [2018-01-25 03:09:15,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 03:09:15,492 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:15,494 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:09:15,494 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:15,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1338247859, now seen corresponding path program 1 times [2018-01-25 03:09:15,503 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:15,564 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:15,565 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:15,565 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:15,565 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:15,618 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:15,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:15,687 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:09:15,688 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:09:15,688 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:09:15,692 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:09:15,706 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:09:15,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:09:15,710 INFO L87 Difference]: Start difference. First operand 147 states. Second operand 4 states. [2018-01-25 03:09:16,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:09:16,059 INFO L93 Difference]: Finished difference Result 298 states and 326 transitions. [2018-01-25 03:09:16,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:09:16,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 03:09:16,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:09:16,071 INFO L225 Difference]: With dead ends: 298 [2018-01-25 03:09:16,071 INFO L226 Difference]: Without dead ends: 158 [2018-01-25 03:09:16,075 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 [2018-01-25 03:09:16,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-01-25 03:09:16,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 142. [2018-01-25 03:09:16,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-01-25 03:09:16,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2018-01-25 03:09:16,117 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 8 [2018-01-25 03:09:16,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:09:16,117 INFO L432 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2018-01-25 03:09:16,118 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:09:16,118 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2018-01-25 03:09:16,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 03:09:16,118 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:16,118 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:09:16,119 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:16,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1338247858, now seen corresponding path program 1 times [2018-01-25 03:09:16,119 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:16,120 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:16,120 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:16,120 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:16,120 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:16,144 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:16,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:16,218 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:09:16,218 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:09:16,219 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:09:16,220 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:09:16,221 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:09:16,221 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:09:16,221 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand 4 states. [2018-01-25 03:09:16,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:09:16,450 INFO L93 Difference]: Finished difference Result 142 states and 152 transitions. [2018-01-25 03:09:16,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:09:16,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 03:09:16,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:09:16,453 INFO L225 Difference]: With dead ends: 142 [2018-01-25 03:09:16,453 INFO L226 Difference]: Without dead ends: 140 [2018-01-25 03:09:16,456 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 [2018-01-25 03:09:16,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-01-25 03:09:16,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-01-25 03:09:16,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-01-25 03:09:16,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 150 transitions. [2018-01-25 03:09:16,469 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 150 transitions. Word has length 8 [2018-01-25 03:09:16,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:09:16,469 INFO L432 AbstractCegarLoop]: Abstraction has 140 states and 150 transitions. [2018-01-25 03:09:16,470 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:09:16,470 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 150 transitions. [2018-01-25 03:09:16,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-25 03:09:16,470 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:16,470 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:09:16,471 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:16,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1963213562, now seen corresponding path program 1 times [2018-01-25 03:09:16,471 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:16,472 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:16,472 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:16,473 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:16,473 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:16,488 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:16,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:16,523 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:09:16,523 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:09:16,523 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:09:16,523 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:09:16,523 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:09:16,523 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:09:16,524 INFO L87 Difference]: Start difference. First operand 140 states and 150 transitions. Second operand 4 states. [2018-01-25 03:09:16,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:09:16,652 INFO L93 Difference]: Finished difference Result 164 states and 175 transitions. [2018-01-25 03:09:16,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:09:16,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-01-25 03:09:16,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:09:16,654 INFO L225 Difference]: With dead ends: 164 [2018-01-25 03:09:16,654 INFO L226 Difference]: Without dead ends: 148 [2018-01-25 03:09:16,655 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 [2018-01-25 03:09:16,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-01-25 03:09:16,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 127. [2018-01-25 03:09:16,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-01-25 03:09:16,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 138 transitions. [2018-01-25 03:09:16,666 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 138 transitions. Word has length 14 [2018-01-25 03:09:16,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:09:16,667 INFO L432 AbstractCegarLoop]: Abstraction has 127 states and 138 transitions. [2018-01-25 03:09:16,667 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:09:16,667 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 138 transitions. [2018-01-25 03:09:16,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-25 03:09:16,668 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:16,668 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:09:16,668 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:16,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1963213563, now seen corresponding path program 1 times [2018-01-25 03:09:16,668 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:16,669 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:16,669 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:16,670 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:16,670 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:16,684 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:16,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:16,757 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:09:16,757 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:09:16,757 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:09:16,758 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:09:16,758 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:09:16,758 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:09:16,758 INFO L87 Difference]: Start difference. First operand 127 states and 138 transitions. Second operand 5 states. [2018-01-25 03:09:16,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:09:16,975 INFO L93 Difference]: Finished difference Result 185 states and 203 transitions. [2018-01-25 03:09:16,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:09:16,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-01-25 03:09:16,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:09:16,979 INFO L225 Difference]: With dead ends: 185 [2018-01-25 03:09:16,980 INFO L226 Difference]: Without dead ends: 173 [2018-01-25 03:09:16,980 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:09:16,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-01-25 03:09:16,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 157. [2018-01-25 03:09:16,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-01-25 03:09:16,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 180 transitions. [2018-01-25 03:09:16,996 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 180 transitions. Word has length 14 [2018-01-25 03:09:16,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:09:16,997 INFO L432 AbstractCegarLoop]: Abstraction has 157 states and 180 transitions. [2018-01-25 03:09:16,997 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:09:16,997 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 180 transitions. [2018-01-25 03:09:16,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 03:09:16,998 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:16,998 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:09:16,999 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:16,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1159097560, now seen corresponding path program 1 times [2018-01-25 03:09:16,999 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:17,000 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:17,000 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:17,000 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:17,000 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:17,022 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:17,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:17,065 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:09:17,065 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:09:17,065 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:09:17,066 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:09:17,066 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:09:17,066 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:09:17,066 INFO L87 Difference]: Start difference. First operand 157 states and 180 transitions. Second operand 4 states. [2018-01-25 03:09:17,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:09:17,225 INFO L93 Difference]: Finished difference Result 173 states and 196 transitions. [2018-01-25 03:09:17,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:09:17,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-25 03:09:17,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:09:17,227 INFO L225 Difference]: With dead ends: 173 [2018-01-25 03:09:17,228 INFO L226 Difference]: Without dead ends: 170 [2018-01-25 03:09:17,228 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 [2018-01-25 03:09:17,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-01-25 03:09:17,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 158. [2018-01-25 03:09:17,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-01-25 03:09:17,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 183 transitions. [2018-01-25 03:09:17,241 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 183 transitions. Word has length 16 [2018-01-25 03:09:17,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:09:17,241 INFO L432 AbstractCegarLoop]: Abstraction has 158 states and 183 transitions. [2018-01-25 03:09:17,241 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:09:17,241 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 183 transitions. [2018-01-25 03:09:17,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 03:09:17,242 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:17,242 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:09:17,242 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:17,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1159097561, now seen corresponding path program 1 times [2018-01-25 03:09:17,243 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:17,244 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:17,244 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:17,244 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:17,244 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:17,257 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:17,299 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:09:17,299 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:09:17,299 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:09:17,299 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:09:17,299 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:09:17,299 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:09:17,299 INFO L87 Difference]: Start difference. First operand 158 states and 183 transitions. Second operand 4 states. [2018-01-25 03:09:17,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:09:17,410 INFO L93 Difference]: Finished difference Result 163 states and 186 transitions. [2018-01-25 03:09:17,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:09:17,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-25 03:09:17,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:09:17,413 INFO L225 Difference]: With dead ends: 163 [2018-01-25 03:09:17,414 INFO L226 Difference]: Without dead ends: 160 [2018-01-25 03:09:17,414 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 [2018-01-25 03:09:17,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-01-25 03:09:17,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2018-01-25 03:09:17,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-01-25 03:09:17,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 180 transitions. [2018-01-25 03:09:17,423 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 180 transitions. Word has length 16 [2018-01-25 03:09:17,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:09:17,424 INFO L432 AbstractCegarLoop]: Abstraction has 156 states and 180 transitions. [2018-01-25 03:09:17,424 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:09:17,424 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 180 transitions. [2018-01-25 03:09:17,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-25 03:09:17,425 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:17,425 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:09:17,425 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:17,425 INFO L82 PathProgramCache]: Analyzing trace with hash 990226269, now seen corresponding path program 1 times [2018-01-25 03:09:17,426 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:17,427 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:17,427 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:17,427 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:17,427 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:17,439 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:17,468 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:09:17,468 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:09:17,468 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:09:17,468 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:09:17,468 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:09:17,468 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:09:17,469 INFO L87 Difference]: Start difference. First operand 156 states and 180 transitions. Second operand 4 states. [2018-01-25 03:09:17,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:09:17,491 INFO L93 Difference]: Finished difference Result 160 states and 183 transitions. [2018-01-25 03:09:17,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:09:17,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-01-25 03:09:17,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:09:17,492 INFO L225 Difference]: With dead ends: 160 [2018-01-25 03:09:17,492 INFO L226 Difference]: Without dead ends: 157 [2018-01-25 03:09:17,492 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:09:17,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-01-25 03:09:17,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2018-01-25 03:09:17,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-01-25 03:09:17,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 179 transitions. [2018-01-25 03:09:17,499 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 179 transitions. Word has length 21 [2018-01-25 03:09:17,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:09:17,499 INFO L432 AbstractCegarLoop]: Abstraction has 156 states and 179 transitions. [2018-01-25 03:09:17,499 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:09:17,499 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 179 transitions. [2018-01-25 03:09:17,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 03:09:17,500 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:17,500 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:09:17,500 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:17,500 INFO L82 PathProgramCache]: Analyzing trace with hash 632244512, now seen corresponding path program 1 times [2018-01-25 03:09:17,500 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:17,501 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:17,501 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:17,501 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:17,501 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:17,517 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:17,585 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:09:17,586 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:09:17,586 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:09:17,586 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:09:17,586 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:09:17,587 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:09:17,587 INFO L87 Difference]: Start difference. First operand 156 states and 179 transitions. Second operand 5 states. [2018-01-25 03:09:17,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:09:17,732 INFO L93 Difference]: Finished difference Result 175 states and 200 transitions. [2018-01-25 03:09:17,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:09:17,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-01-25 03:09:17,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:09:17,733 INFO L225 Difference]: With dead ends: 175 [2018-01-25 03:09:17,733 INFO L226 Difference]: Without dead ends: 171 [2018-01-25 03:09:17,733 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:09:17,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-01-25 03:09:17,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 155. [2018-01-25 03:09:17,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-25 03:09:17,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 179 transitions. [2018-01-25 03:09:17,738 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 179 transitions. Word has length 22 [2018-01-25 03:09:17,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:09:17,738 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 179 transitions. [2018-01-25 03:09:17,738 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:09:17,738 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 179 transitions. [2018-01-25 03:09:17,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 03:09:17,739 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:17,739 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:09:17,739 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:17,739 INFO L82 PathProgramCache]: Analyzing trace with hash 632244513, now seen corresponding path program 1 times [2018-01-25 03:09:17,740 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:17,740 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:17,740 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:17,740 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:17,741 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:17,754 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:17,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:17,810 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:09:17,810 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:09:17,811 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:09:17,811 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:09:17,811 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:09:17,811 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:09:17,812 INFO L87 Difference]: Start difference. First operand 155 states and 179 transitions. Second operand 5 states. [2018-01-25 03:09:18,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:09:18,001 INFO L93 Difference]: Finished difference Result 177 states and 202 transitions. [2018-01-25 03:09:18,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:09:18,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-01-25 03:09:18,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:09:18,002 INFO L225 Difference]: With dead ends: 177 [2018-01-25 03:09:18,002 INFO L226 Difference]: Without dead ends: 175 [2018-01-25 03:09:18,003 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:09:18,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-01-25 03:09:18,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 157. [2018-01-25 03:09:18,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-01-25 03:09:18,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 180 transitions. [2018-01-25 03:09:18,009 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 180 transitions. Word has length 22 [2018-01-25 03:09:18,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:09:18,009 INFO L432 AbstractCegarLoop]: Abstraction has 157 states and 180 transitions. [2018-01-25 03:09:18,009 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:09:18,009 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 180 transitions. [2018-01-25 03:09:18,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 03:09:18,010 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:18,010 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:09:18,010 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:18,010 INFO L82 PathProgramCache]: Analyzing trace with hash -733762389, now seen corresponding path program 1 times [2018-01-25 03:09:18,010 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:18,011 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:18,011 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:18,011 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:18,011 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:18,021 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:18,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:18,059 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:09:18,059 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:09:18,059 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:09:18,059 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 03:09:18,059 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 03:09:18,060 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:09:18,060 INFO L87 Difference]: Start difference. First operand 157 states and 180 transitions. Second operand 3 states. [2018-01-25 03:09:18,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:09:18,069 INFO L93 Difference]: Finished difference Result 307 states and 355 transitions. [2018-01-25 03:09:18,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 03:09:18,069 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-01-25 03:09:18,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:09:18,070 INFO L225 Difference]: With dead ends: 307 [2018-01-25 03:09:18,071 INFO L226 Difference]: Without dead ends: 159 [2018-01-25 03:09:18,072 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:09:18,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-01-25 03:09:18,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-01-25 03:09:18,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-01-25 03:09:18,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 182 transitions. [2018-01-25 03:09:18,077 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 182 transitions. Word has length 22 [2018-01-25 03:09:18,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:09:18,078 INFO L432 AbstractCegarLoop]: Abstraction has 159 states and 182 transitions. [2018-01-25 03:09:18,078 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 03:09:18,078 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 182 transitions. [2018-01-25 03:09:18,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-25 03:09:18,079 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:18,079 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:09:18,079 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:18,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1797349272, now seen corresponding path program 1 times [2018-01-25 03:09:18,080 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:18,081 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:18,081 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:18,081 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:18,081 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:18,095 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:18,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:18,253 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:09:18,253 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 03:09:18,253 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:09:18,254 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 03:09:18,254 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 03:09:18,254 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:09:18,254 INFO L87 Difference]: Start difference. First operand 159 states and 182 transitions. Second operand 6 states. [2018-01-25 03:09:18,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:09:18,495 INFO L93 Difference]: Finished difference Result 352 states and 406 transitions. [2018-01-25 03:09:18,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 03:09:18,495 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-01-25 03:09:18,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:09:18,497 INFO L225 Difference]: With dead ends: 352 [2018-01-25 03:09:18,497 INFO L226 Difference]: Without dead ends: 202 [2018-01-25 03:09:18,498 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-01-25 03:09:18,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-01-25 03:09:18,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 175. [2018-01-25 03:09:18,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-01-25 03:09:18,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 203 transitions. [2018-01-25 03:09:18,516 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 203 transitions. Word has length 24 [2018-01-25 03:09:18,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:09:18,516 INFO L432 AbstractCegarLoop]: Abstraction has 175 states and 203 transitions. [2018-01-25 03:09:18,517 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 03:09:18,517 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 203 transitions. [2018-01-25 03:09:18,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-25 03:09:18,518 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:18,518 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] [2018-01-25 03:09:18,518 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:18,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1764795143, now seen corresponding path program 1 times [2018-01-25 03:09:18,519 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:18,520 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:18,520 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:18,520 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:18,520 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:18,536 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:19,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:19,048 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:09:19,048 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-01-25 03:09:19,048 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:09:19,049 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-25 03:09:19,049 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-25 03:09:19,049 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-01-25 03:09:19,049 INFO L87 Difference]: Start difference. First operand 175 states and 203 transitions. Second operand 12 states. [2018-01-25 03:09:19,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:09:19,740 INFO L93 Difference]: Finished difference Result 192 states and 223 transitions. [2018-01-25 03:09:19,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-25 03:09:19,741 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2018-01-25 03:09:19,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:09:19,742 INFO L225 Difference]: With dead ends: 192 [2018-01-25 03:09:19,742 INFO L226 Difference]: Without dead ends: 191 [2018-01-25 03:09:19,743 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2018-01-25 03:09:19,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-01-25 03:09:19,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 176. [2018-01-25 03:09:19,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-01-25 03:09:19,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 205 transitions. [2018-01-25 03:09:19,751 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 205 transitions. Word has length 25 [2018-01-25 03:09:19,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:09:19,751 INFO L432 AbstractCegarLoop]: Abstraction has 176 states and 205 transitions. [2018-01-25 03:09:19,752 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-25 03:09:19,752 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 205 transitions. [2018-01-25 03:09:19,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-25 03:09:19,752 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:19,753 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] [2018-01-25 03:09:19,753 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:19,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1764795144, now seen corresponding path program 1 times [2018-01-25 03:09:19,753 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:19,754 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:19,754 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:19,754 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:19,754 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:19,768 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:20,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:20,085 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:09:20,085 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-25 03:09:20,085 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:09:20,086 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-25 03:09:20,086 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-25 03:09:20,086 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-01-25 03:09:20,086 INFO L87 Difference]: Start difference. First operand 176 states and 205 transitions. Second operand 11 states. [2018-01-25 03:09:20,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:09:20,604 INFO L93 Difference]: Finished difference Result 245 states and 274 transitions. [2018-01-25 03:09:20,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-25 03:09:20,604 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-01-25 03:09:20,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:09:20,605 INFO L225 Difference]: With dead ends: 245 [2018-01-25 03:09:20,606 INFO L226 Difference]: Without dead ends: 240 [2018-01-25 03:09:20,606 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2018-01-25 03:09:20,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-01-25 03:09:20,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 192. [2018-01-25 03:09:20,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-01-25 03:09:20,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 228 transitions. [2018-01-25 03:09:20,616 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 228 transitions. Word has length 25 [2018-01-25 03:09:20,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:09:20,616 INFO L432 AbstractCegarLoop]: Abstraction has 192 states and 228 transitions. [2018-01-25 03:09:20,616 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-25 03:09:20,616 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 228 transitions. [2018-01-25 03:09:20,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-25 03:09:20,617 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:20,617 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] [2018-01-25 03:09:20,617 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:20,617 INFO L82 PathProgramCache]: Analyzing trace with hash 2572345, now seen corresponding path program 1 times [2018-01-25 03:09:20,618 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:20,618 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:20,618 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:20,619 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:20,619 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:20,629 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:20,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:20,661 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:09:20,661 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:09:20,662 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:09:20,662 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:09:20,662 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:09:20,662 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:09:20,663 INFO L87 Difference]: Start difference. First operand 192 states and 228 transitions. Second operand 5 states. [2018-01-25 03:09:20,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:09:22,145 INFO L93 Difference]: Finished difference Result 277 states and 330 transitions. [2018-01-25 03:09:22,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:09:22,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-01-25 03:09:22,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:09:22,149 INFO L225 Difference]: With dead ends: 277 [2018-01-25 03:09:22,149 INFO L226 Difference]: Without dead ends: 276 [2018-01-25 03:09:22,150 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:09:22,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-01-25 03:09:22,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 191. [2018-01-25 03:09:22,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-01-25 03:09:22,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 226 transitions. [2018-01-25 03:09:22,162 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 226 transitions. Word has length 25 [2018-01-25 03:09:22,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:09:22,162 INFO L432 AbstractCegarLoop]: Abstraction has 191 states and 226 transitions. [2018-01-25 03:09:22,162 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:09:22,163 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 226 transitions. [2018-01-25 03:09:22,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-25 03:09:22,163 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:22,164 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] [2018-01-25 03:09:22,164 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:22,164 INFO L82 PathProgramCache]: Analyzing trace with hash 2572346, now seen corresponding path program 1 times [2018-01-25 03:09:22,164 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:22,165 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:22,165 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:22,165 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:22,165 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:22,178 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:22,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:22,242 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:09:22,242 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:09:22,243 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:09:22,243 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:09:22,243 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:09:22,243 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:09:22,243 INFO L87 Difference]: Start difference. First operand 191 states and 226 transitions. Second operand 5 states. [2018-01-25 03:09:22,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:09:22,529 INFO L93 Difference]: Finished difference Result 337 states and 399 transitions. [2018-01-25 03:09:22,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:09:22,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-01-25 03:09:22,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:09:22,531 INFO L225 Difference]: With dead ends: 337 [2018-01-25 03:09:22,532 INFO L226 Difference]: Without dead ends: 336 [2018-01-25 03:09:22,532 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:09:22,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-01-25 03:09:22,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 190. [2018-01-25 03:09:22,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-01-25 03:09:22,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 224 transitions. [2018-01-25 03:09:22,543 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 224 transitions. Word has length 25 [2018-01-25 03:09:22,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:09:22,543 INFO L432 AbstractCegarLoop]: Abstraction has 190 states and 224 transitions. [2018-01-25 03:09:22,543 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:09:22,544 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 224 transitions. [2018-01-25 03:09:22,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-25 03:09:22,544 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:22,544 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] [2018-01-25 03:09:22,545 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:22,545 INFO L82 PathProgramCache]: Analyzing trace with hash -676623804, now seen corresponding path program 1 times [2018-01-25 03:09:22,545 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:22,546 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:22,548 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:22,548 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:22,548 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:22,560 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:22,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:22,639 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:09:22,640 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 03:09:22,640 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:09:22,640 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 03:09:22,640 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 03:09:22,640 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-25 03:09:22,640 INFO L87 Difference]: Start difference. First operand 190 states and 224 transitions. Second operand 9 states. [2018-01-25 03:09:23,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:09:23,025 INFO L93 Difference]: Finished difference Result 228 states and 270 transitions. [2018-01-25 03:09:23,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-25 03:09:23,025 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-01-25 03:09:23,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:09:23,026 INFO L225 Difference]: With dead ends: 228 [2018-01-25 03:09:23,026 INFO L226 Difference]: Without dead ends: 227 [2018-01-25 03:09:23,027 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-01-25 03:09:23,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-01-25 03:09:23,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 189. [2018-01-25 03:09:23,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-25 03:09:23,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 222 transitions. [2018-01-25 03:09:23,033 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 222 transitions. Word has length 28 [2018-01-25 03:09:23,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:09:23,033 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 222 transitions. [2018-01-25 03:09:23,033 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 03:09:23,033 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 222 transitions. [2018-01-25 03:09:23,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-25 03:09:23,034 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:23,034 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] [2018-01-25 03:09:23,034 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:23,034 INFO L82 PathProgramCache]: Analyzing trace with hash -676623803, now seen corresponding path program 1 times [2018-01-25 03:09:23,034 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:23,035 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:23,035 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:23,035 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:23,035 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:23,046 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:23,211 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:09:23,211 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 03:09:23,211 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:09:23,212 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 03:09:23,212 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 03:09:23,212 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-25 03:09:23,212 INFO L87 Difference]: Start difference. First operand 189 states and 222 transitions. Second operand 9 states. [2018-01-25 03:09:23,613 WARN L146 SmtUtils]: Spent 174ms on a formula simplification. DAG size of input: 42 DAG size of output 40 [2018-01-25 03:09:23,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:09:23,844 INFO L93 Difference]: Finished difference Result 227 states and 268 transitions. [2018-01-25 03:09:23,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-25 03:09:23,844 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-01-25 03:09:23,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:09:23,846 INFO L225 Difference]: With dead ends: 227 [2018-01-25 03:09:23,846 INFO L226 Difference]: Without dead ends: 226 [2018-01-25 03:09:23,846 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-01-25 03:09:23,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-01-25 03:09:23,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 188. [2018-01-25 03:09:23,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-01-25 03:09:23,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 220 transitions. [2018-01-25 03:09:23,857 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 220 transitions. Word has length 28 [2018-01-25 03:09:23,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:09:23,857 INFO L432 AbstractCegarLoop]: Abstraction has 188 states and 220 transitions. [2018-01-25 03:09:23,857 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 03:09:23,857 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 220 transitions. [2018-01-25 03:09:23,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 03:09:23,858 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:23,858 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:09:23,858 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:23,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1254885066, now seen corresponding path program 1 times [2018-01-25 03:09:23,859 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:23,859 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:23,859 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:23,860 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:23,860 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:23,871 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:23,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:23,938 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:09:23,938 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:09:23,938 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:09:23,939 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:09:23,939 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:09:23,939 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:09:23,939 INFO L87 Difference]: Start difference. First operand 188 states and 220 transitions. Second operand 4 states. [2018-01-25 03:09:24,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:09:24,146 INFO L93 Difference]: Finished difference Result 245 states and 284 transitions. [2018-01-25 03:09:24,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:09:24,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-01-25 03:09:24,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:09:24,148 INFO L225 Difference]: With dead ends: 245 [2018-01-25 03:09:24,148 INFO L226 Difference]: Without dead ends: 243 [2018-01-25 03:09:24,148 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:09:24,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-01-25 03:09:24,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 186. [2018-01-25 03:09:24,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-01-25 03:09:24,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 216 transitions. [2018-01-25 03:09:24,154 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 216 transitions. Word has length 29 [2018-01-25 03:09:24,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:09:24,154 INFO L432 AbstractCegarLoop]: Abstraction has 186 states and 216 transitions. [2018-01-25 03:09:24,154 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:09:24,154 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 216 transitions. [2018-01-25 03:09:24,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 03:09:24,155 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:24,155 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:09:24,155 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:24,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1254885065, now seen corresponding path program 1 times [2018-01-25 03:09:24,155 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:24,156 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:24,156 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:24,156 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:24,156 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:24,165 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:24,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:24,194 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:09:24,194 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:09:24,194 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:09:24,194 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:09:24,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:09:24,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:09:24,195 INFO L87 Difference]: Start difference. First operand 186 states and 216 transitions. Second operand 4 states. [2018-01-25 03:09:24,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:09:24,323 INFO L93 Difference]: Finished difference Result 213 states and 248 transitions. [2018-01-25 03:09:24,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:09:24,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-01-25 03:09:24,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:09:24,325 INFO L225 Difference]: With dead ends: 213 [2018-01-25 03:09:24,325 INFO L226 Difference]: Without dead ends: 212 [2018-01-25 03:09:24,325 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 [2018-01-25 03:09:24,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-01-25 03:09:24,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 185. [2018-01-25 03:09:24,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-01-25 03:09:24,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 214 transitions. [2018-01-25 03:09:24,335 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 214 transitions. Word has length 29 [2018-01-25 03:09:24,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:09:24,336 INFO L432 AbstractCegarLoop]: Abstraction has 185 states and 214 transitions. [2018-01-25 03:09:24,336 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:09:24,336 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 214 transitions. [2018-01-25 03:09:24,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 03:09:24,336 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:24,336 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:09:24,337 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:24,337 INFO L82 PathProgramCache]: Analyzing trace with hash 570395414, now seen corresponding path program 1 times [2018-01-25 03:09:24,337 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:24,338 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:24,338 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:24,338 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:24,338 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:24,348 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:24,375 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:09:24,376 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:09:24,376 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:09:24,376 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:09:24,376 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:09:24,377 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:09:24,377 INFO L87 Difference]: Start difference. First operand 185 states and 214 transitions. Second operand 5 states. [2018-01-25 03:09:24,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:09:24,605 INFO L93 Difference]: Finished difference Result 268 states and 312 transitions. [2018-01-25 03:09:24,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:09:24,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-25 03:09:24,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:09:24,607 INFO L225 Difference]: With dead ends: 268 [2018-01-25 03:09:24,607 INFO L226 Difference]: Without dead ends: 267 [2018-01-25 03:09:24,607 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:09:24,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-01-25 03:09:24,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 184. [2018-01-25 03:09:24,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-01-25 03:09:24,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 212 transitions. [2018-01-25 03:09:24,613 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 212 transitions. Word has length 29 [2018-01-25 03:09:24,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:09:24,613 INFO L432 AbstractCegarLoop]: Abstraction has 184 states and 212 transitions. [2018-01-25 03:09:24,613 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:09:24,613 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 212 transitions. [2018-01-25 03:09:24,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 03:09:24,614 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:24,614 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:09:24,614 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:24,614 INFO L82 PathProgramCache]: Analyzing trace with hash 570395415, now seen corresponding path program 1 times [2018-01-25 03:09:24,614 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:24,615 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:24,615 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:24,615 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:24,615 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:24,621 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:24,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:24,670 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:09:24,670 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:09:24,670 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:09:24,671 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:09:24,671 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:09:24,671 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:09:24,671 INFO L87 Difference]: Start difference. First operand 184 states and 212 transitions. Second operand 5 states. [2018-01-25 03:09:24,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:09:24,920 INFO L93 Difference]: Finished difference Result 325 states and 375 transitions. [2018-01-25 03:09:24,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:09:24,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-25 03:09:24,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:09:24,921 INFO L225 Difference]: With dead ends: 325 [2018-01-25 03:09:24,921 INFO L226 Difference]: Without dead ends: 324 [2018-01-25 03:09:24,921 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:09:24,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-01-25 03:09:24,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 183. [2018-01-25 03:09:24,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-01-25 03:09:24,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 210 transitions. [2018-01-25 03:09:24,931 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 210 transitions. Word has length 29 [2018-01-25 03:09:24,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:09:24,932 INFO L432 AbstractCegarLoop]: Abstraction has 183 states and 210 transitions. [2018-01-25 03:09:24,932 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:09:24,932 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 210 transitions. [2018-01-25 03:09:24,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-25 03:09:24,944 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:24,944 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] [2018-01-25 03:09:24,944 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:24,945 INFO L82 PathProgramCache]: Analyzing trace with hash -526012245, now seen corresponding path program 1 times [2018-01-25 03:09:24,945 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:24,946 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:24,946 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:24,946 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:24,946 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:24,957 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:24,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:24,994 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:09:24,994 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:09:24,994 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:09:24,995 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:09:24,995 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:09:24,995 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:09:24,995 INFO L87 Difference]: Start difference. First operand 183 states and 210 transitions. Second operand 4 states. [2018-01-25 03:09:25,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:09:25,098 INFO L93 Difference]: Finished difference Result 198 states and 227 transitions. [2018-01-25 03:09:25,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:09:25,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-01-25 03:09:25,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:09:25,099 INFO L225 Difference]: With dead ends: 198 [2018-01-25 03:09:25,099 INFO L226 Difference]: Without dead ends: 197 [2018-01-25 03:09:25,100 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 [2018-01-25 03:09:25,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-01-25 03:09:25,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 182. [2018-01-25 03:09:25,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-01-25 03:09:25,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 208 transitions. [2018-01-25 03:09:25,105 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 208 transitions. Word has length 31 [2018-01-25 03:09:25,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:09:25,105 INFO L432 AbstractCegarLoop]: Abstraction has 182 states and 208 transitions. [2018-01-25 03:09:25,105 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:09:25,105 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 208 transitions. [2018-01-25 03:09:25,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-25 03:09:25,106 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:25,106 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] [2018-01-25 03:09:25,106 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:25,106 INFO L82 PathProgramCache]: Analyzing trace with hash -526012244, now seen corresponding path program 1 times [2018-01-25 03:09:25,106 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:25,107 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:25,107 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:25,107 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:25,107 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:25,115 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:25,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:25,176 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:09:25,176 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:09:25,176 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:09:25,176 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:09:25,176 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:09:25,176 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:09:25,176 INFO L87 Difference]: Start difference. First operand 182 states and 208 transitions. Second operand 4 states. [2018-01-25 03:09:25,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:09:25,320 INFO L93 Difference]: Finished difference Result 222 states and 250 transitions. [2018-01-25 03:09:25,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:09:25,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-01-25 03:09:25,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:09:25,321 INFO L225 Difference]: With dead ends: 222 [2018-01-25 03:09:25,321 INFO L226 Difference]: Without dead ends: 220 [2018-01-25 03:09:25,321 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:09:25,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-01-25 03:09:25,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 180. [2018-01-25 03:09:25,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-01-25 03:09:25,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 204 transitions. [2018-01-25 03:09:25,330 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 204 transitions. Word has length 31 [2018-01-25 03:09:25,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:09:25,331 INFO L432 AbstractCegarLoop]: Abstraction has 180 states and 204 transitions. [2018-01-25 03:09:25,331 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:09:25,331 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 204 transitions. [2018-01-25 03:09:25,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-25 03:09:25,332 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:09:25,332 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:09:25,332 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:09:25,332 INFO L82 PathProgramCache]: Analyzing trace with hash 886820396, now seen corresponding path program 1 times [2018-01-25 03:09:25,332 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:09:25,333 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:25,333 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:09:25,333 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:09:25,333 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:09:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:09:25,343 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:09:25,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:09:25,418 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:09:25,418 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 03:09:25,419 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-01-25 03:09:25,420 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [6], [7], [10], [16], [18], [21], [136], [137], [138], [139], [142], [148], [154], [155], [156], [158], [159], [162], [163], [166], [185], [187], [206], [208], [217], [218], [219] [2018-01-25 03:09:25,479 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 03:09:25,479 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